ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

COMPANY PROJECT No: 4700021770

CONTRACTOR PROJECT No: 67-00106

HSE DESIGN PHILOSOPHY

COMPANY DOC No: 1-CF0000-40-PHL-0002-00

Rev. 03

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Contractor Document Number: CF0000-1085001

03

02

01

Rev

13/05/2024

18/12/2023

13/10/2023

Date (DD/MM/YYYY)

IFU

IFU

IFU

Issued for Use

S. Ranieri

V. Cavaliere A. Massoni C. Copelli

Issued for Use

S. Ranieri

V. Cavaliere A. Massoni C. Copelli

Issued for Use

S. Ranieri V. Cavaliere A. Massoni A. Massoni

Status

Status Description

PREPARED

CHECKED

APPROVED 1

APPROVED 2

This Document is intended for use by ADNOC and its nominated Consultants, Contractors, Manufacturers and Suppliers.

DOCUMENT CLASS – 1 Page 1 of 83

Uncontrolled When Printed

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

COMPANY PROJECT No: 4700021770

CONTRACTOR PROJECT No: 67-00106

HSE DESIGN PHILOSOPHY

COMPANY DOC No: 1-CF0000-40-PHL-0002-00

Rev. 03

This document is rolled over from PCSA document no. 1-CF0000-40-PHL-0002-00 Rev. 00

SUMMARY OF DOCUMENT REVISIONS

Rev

00

B1

A1

Date

(DD/MM/YYYY)

27/03/2023

06/03/2023

30/01/2023

Status

Status Description

IFU

IFA

IFR

Issued for Use

Issued for Company Approval

Issued for Company Review

DOCUMENT CLASS – 1 Page 2 of 83

Uncontrolled When Printed

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

COMPANY PROJECT No: 4700021770

CONTRACTOR PROJECT No: 67-00106

HSE DESIGN PHILOSOPHY

COMPANY DOC No: 1-CF0000-40-PHL-0002-00

Rev. 03

HOLD

Section

Description

HOLD LIST

DOCUMENT CLASS – 1 Page 3 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

TABLE OF CONTENTS

PROJECT OVERVIEW … 7

PURPOSE … 8

DEFINITIONS & ABBREVIATIONS … 9

3.1

3.2

Definitions … 9

Abbreviations … 9

REFERENCE DOCUMENTS … 12

SCOPE … 16

DESIGN PHILOSOPHY … 16

6.1

6.2

Principles of Inherent Safety … 16

Hazard control, mitigation and recovery … 17

PROJECT HAZARD & RISK MANAGEMENT PROCESS … 18

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

HAZID/ENVID/OHID study … 18

Inherently Safer Design Review – ISD review … 18

Hazard and Operability (HAZOP) review … 18

SIL Study … 18

PHSER Review … 19

Fire and Explosion Risk Assessment (FERA) … 19

H2S Zoning Assessment… 19

Escape, Evacuation and Rescue Assessment (EERA) … 20

Emergency Systems Survivability Analysis (ESSA) … 20

7.10 Quantitative Risk Analysis (QRA) … 20

7.11 CFD Modelling … 20

7.12 Human Factors Engineering … 20

7.13 SIMOPS review … 21

7.14 Environmental Impact Assessment (EIA) … 21

7.15 HSE Impact Assessment (HSEIA) – Detail Design phase … 22

PRINCIPLES OF PLANT LAYOUT… 22

8.1

Plant Layout … 24

IGNITION CONTROL (HAZARDOUS AREA CLASSIFICATION) … 27

9.1

Hazardous Area Definition and Criteria … 28

10. MINIMIZATION OF LEAK SOURCES … 29

DOCUMENT CLASS – 1 Page 4 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

HSECES … 30

PROCESS SAFETY DESIGN … 30

12.1 Acoustic Induced Vibration … 30

12.2 Flow Induced Vibration … 31

12.3 Overpressure Protection & Relief System … 31

12.4 Process Isolation … 31

12.5 Emergency Shutdown … 31

12.6 Emergency Depressurization … 32

FIRE ZONE … 32

FIRE & GAS DETECTION … 33

FIRE PROTECTION SYSTEM … 33

15.1 Active Fire Protection System … 33

15.2 Passive Fire Protection … 35

PAVING, DRAINAGE, ENVIRONMENTAL CONTAINMENT AND BUNDING … 35

16.1 Paving … 35

16.2 Drainage … 36

16.3 Bunding … 36

ELECTRICAL SAFETY … 36

17.1 Emergency Power … 36

17.2 Battery Rooms … 37

17.3 Transformers … 37

17.4 Lightning Protection … 37

17.5 Grounding Systems … 38

17.6 Earthing/Bonding … 38

HVAC … 38

HANDLING AND STORAGE OF HAZARDOUS MATERIAL … 39

SOUR / LETHAL SERVICE … 39

EMERGENCY COMMUNICATION… 39

ESCAPE, EVACUATION AND RESCUE … 40

22.1 Escape Routes and Other General Requirements … 41

22.2 Means of Escape and Evacuation (Offshore) … 42

22.3 Rescue and Recovery … 42

22.4 Safety Signs & Hazard Communication … 42

VISUAL/AUDIBLE NAVIGATIONAL AIDS … 43

EMERGENCY LIGHTING … 43

OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT … 43

DOCUMENT CLASS – 1 Page 5 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

25.1 Health Hazards … 43

25.2 Chemical Hazards … 44

25.3 Physical Hazards … 44

ENVIRONMENTAL MANAGEMENT … 48

26.1 Emissions to Air … 48

26.2 Solid Wastes … 48

26.3 Liquid Wastes … 48

FLARE AND VENT SYSTEMS … 49

PERSONNEL PROTECTION – SAFETY EQUIPMENT & PPE … 51

HYDROGEN SULPHIDE (H2S) … 52

APPENDIX-1 LAYOUT SEPARATION DISTANCES AS PER AGES-GL-03-001 … 56

APPENDIX-2 ADNOC RISK MATRIX AND CRITERIA … 75

APPENDIX-3 ADNOC HSE STANDARDS … 80

DOCUMENT CLASS – 1 Page 6 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

PROJECT OVERVIEW

1.1

EPC for HAIL & GHASHA Development Project

The Hail & Ghasha Development (HGD) Project is of strategic importance to the Emirate of Abu Dhabi. The Project will develop the untapped oil and gas reserves from the highly sour Hail and Ghasha fields. Production is targeted to start by Q4 2027 with sustainable production of 1 BSCFD of Raw Gas, and max production of 82.5 MSBPD of Oil, 76.3 MSBPD of Condensate, 9000 TPD of Sulphur and 5030 TPD of NGL. In addition, Project will capture 1.52 million tonnes of CO2 per year taking ADNOC’s committed investment for carbon capture capacity. The Hail and Ghasha fields are situated offshore ABU DHABI about 140 km away from ABU DHABI mainland in water depths varying from 0 to 15 meters.

The HGD Project comprises the following:

• Artificial Islands Construction;

• Offshore package – EPC 01: Offshore Drilling Centers (DCs), Subsea Pipelines, Umbilicals, Power Cable Connections, Seawater Intake Structure, Bridges, Risers, Flare Structure, facilities at Ghasha Offshore Processing Plant (“GOP”);

• Onshore package – EPC 02: Manayif Onshore Processing Plant (“OPP”), Manayif

Utilities, Offsite Pipelines & Tie-ins, Main Control and Other Buildings.

The HGD Project will be executed in a single phase approach. It will start production from three Drilling Centres (Reeah, Jzool & Seebah) in Ghasha Field to GOP and from Gaff Island in Hail Field to OPP. Remaining Drilling Centres, gas injection, and other associated facilities will be developed in ‘future’ to sustain production from Hail & Ghasha fields.

Figure 1 - Hail & Ghasha Field

DOCUMENT CLASS – 1 Page 7 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

PURPOSE

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

The purpose of this document is to set out the Design Health, Safety and Environmental (HSE) Philosophy for the EPC phase of the Abu Dhabi National Oil Company (ADNOC) Hail and Ghasha Development Project for Package 1 - Offshore facilities (including drilling islands).

The HSE philosophy aims to define the fundamental principles that are to be adopted with respect to HSE aspects of the design and to ensure that a project is designed and constructed in compliance with UAE Federal and Local Laws & Regulations, and ADNOC Standards & HSE Regulations. This document represents the minimum requirements and shall be read and implemented in conjunction with project specifications, procedures and philosophies.

This document is intended to inform the EPC design team of key HSE requirements that need to be addressed so that the risk to people, asset and environment will be reduced to a level as low as reasonably practicable (ALARP).

Further to inform the EPC design team to control the environmental (including social) impacts of the project on wildlife, marine life habitat, air and groundwater quality based on the prevention of pollution or, where this is not possible or practical, the minimization of pollution using Best Available Technology (BAT);

Hazard Management Process described in the HSE Plan need to be followed in the design process. Safety studies and assessments that are planned to be carried out during EPC as part of this hazard management process are identified within the Project HSE Plan, document no 1-CF0000-52-PLN-5801-00.

Further to reduce the probability of an accidental event and loss of primary containment occurring. To minimize the damage caused to plant, equipment and structures, or pollution to the environment, should an accidental event occur;

• To provide guidance in the selection of equipment and design of the projects to

achieve its HSE objectives;

• To preserve and optimize the usage of natural resources on a sustainable basis;

and

•

Identify interfaces and ensure consistency in HSE design between engineering disciplines.

This HSE Philosophy covers the scope in relation to the Ghasha Offshore Processing Island (GOP), Drilling Islands and any other tie ins to other facilities with regards to EPC design. Drilling Operations in regard to the Drilling Islands are outside the scope of this HSE Philosophy and fall under the Drilling Contractors scope.

This document should be kept live and updated throughout the project to capture further detail and refinements.

DOCUMENT CLASS – 1 Page 8 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

DEFINITIONS & ABBREVIATIONS

3.1

Definitions

COMPANY

CONTRACTOR

Abu Dhabi National Oil Company (ADNOC)

Integrated JV (NPCC -SAIPEM)

PROJECT

Hail and Ghasha Development Project

3.2

Abbreviations

ACR

Air Changes Per Hour

ADNOC

Abu Dhabi National Oil Company

AGES

ADNOC Group Engineering Standards and Specifications

AFP

AIV

Active Fire Protection

Acoustically Induced Vibration

ALARP

As Low as Reasonably Practicable

AOC

API4

BAT

BS

Accidentally Oil contaminated

American Petroleum Institute

Best Available Technology

British Standards

BSCFD

Billion standard Cubic feet per day

CCTV

Closed Circuit Television

COMAH

Control of Major Accident Hazards

CO2

COC

Carbon dioxide

Continuously Oil Contaminated

COSHH

The Control of Substances Hazardous to Health

CWS

DC

EAD

EAZ

EBD

Clean Water Sewer

Drilling Centre

Environmental Agency, Abu Dhabi

Emergency Awareness Zone

Emergency Blow Down

EBDV

Emergency Blow Down Valve

EBS

EDP

EEBA

EER

EERA

Environmental Baseline Survey

Emergency Depressurisation

Emergency Escape Breathing Apparatus

Escape Evacuation and Rescue

Escape Evacuation and Rescue Assessment

DOCUMENT CLASS – 1 Page 9 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

EI

EIA

EIS

EMI

Energy Institute

Environmental Impact Assessment

Environmental Impact Statement

Electro Magnetic Interference

ENVID

Environmental impact Identification

EPC

EPZ

ESD

ESDV

ERP

ERRV

ESSA

FEED

FERA

FIV

F&G

GHS

GOP

Engineering, Procurement and Construction

Emergency Planning Zone

Emergency Shutdown

Emergency Shutdown Valve

Emergency Response Plan

Emergency Response and Rescue Vessels

Emergency System Survivability Analysis

Front End Engineering Design

Fire & Explosion Risk Assessment

Flow Induced Vibration

Fire & Gas

Globally Harmonized System

Ghasha Offshore Processing

HAZID

Hazard Identification (Study)

HAZOP

Hazard and Operability (Study)

HFE

HGD

HSE

Human Factor Engineering

Hail & Ghasha Development

Health Safety and Environment

HSECES

HSE Critical Equipment and Systems

HSEIA

Health Safety and Environmental Impact Assessment

HSEMS

HSE Management System

HVAC

Heating Ventilating and Air Conditioning

H2S

IALA

ICAO

LFL

LSIR

MAH

MOB

Hydrogen Sulfide

International Association of Marine Aids to Navigation and Lighthouse Authorities International Civil Aviation Organization

Lower flammable Limit

Location Specific Individual Risk

Major Accidental Hazard

Man On Board

MMSCFD

Million Standard Cubic Feet per Day

DOCUMENT CLASS – 1 Page 10 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

MSBPD

Thousand Standard Barrel per Day

MSDS

NGL

IEC

ISD

ISO

NFPA

OGP

OHID

OHRA

OPP

PAGA

PFP

Material Safety Datasheet

Natural Gas Liquids

International Electrotechnical Commission

Inherently Safer Design

International Standards Organization

National Fire Protection Association

International Association of Oil & Gas Producers

Occupational Health Identification

Occupational Health Risk Assessment

Onshore Processing Plant

Public Address General Alarm

Passive Fire Protection

PHSER

Project HSE Review

PPC

PPE

PS

PSV

QRA

SAR

SCBA

SCE

SIF

SIL

Pollution Prevention and Control

Personal Protective Equipment

Performance Standards

Pressure Safety Valve

Quantitative Risk Assessment

Search and Rescue

Self-Contained Breathing Apparatus

Safety Critical Equipment

Safety Instrumented Function

Safety Integrity Level

SIMOPS

Simultaneous Operations

SOLAS

Safety of Life at Sea

TEMPSC

Totally Enclosed Motor Propelled Survival Craft

TLV

TNO

TOR

TPD

TGR

TR

TRIA

TWA

Threshold Limit Value

The Netherlands Organisation for applied scientific research

Terms of Reference

Tonn Per Day

Temporary Gas Refuge

Temporary Refuge

Toxic Refuge Impairment Assessment

Time Weighted Average

DOCUMENT CLASS – 1 Page 11 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

UAE

UHF

UFL

UPS

VBR

VDU

United Arab Emirates

Ultra-High frequency

Upper Flammable Limit

Uninterrupted Power Supply

Volume Blockage Ratio

Visual Display Unit

REFERENCE DOCUMENTS

Sl. No.

Document Title

1. Emiri Decree No. (18) of 2001, Declaring Marawah as a Protected

Marine Area

2. Federal Authority for Nuclear Regulations (FANR) Regulations

(FANR-REG-09, 10, 13, 23,24, 26)

3. United Arab Emirates Cabinet Regulation for the Protection of the

Marine Environment, 2001

Law No. 5 of 2016 concerning the Regulation of Groundwater in the Emirate of Abu Dhabi

5. Abu Dhabi Law No. 1 of 1988 establishing the Supreme Petroleum

Council Abu Dhabi Emirate Law No. 21 year 2005, “Waste Management in Emirate of Abu Dhabi” Abu Dhabi Emirate Law No. 8, year 1978, “Conservation of Petroleum Resources”;

8. UAE Federal Law No. 8, year 1980, Regulations of Labor Relations

9. Ministry of Labor and Social Affairs, Ministerial Order No. 32, year to Protect

the Ways and Means

1982, “Determination of Employees against Occupational Hazards”

UAE Federal Law No. 24, year 1999, “Protection and Development the Environment” and Regulations developed by Federal of Environment Authority based on the Executive Act of Federal Law No. 24, year 1999 “Protection and Development of the Environment”

Cabinet Decree No (12) of the year 2006 concerning the Protection of Air From Pollution

Law No. 21 of 2005 for Waste Management in the Emirates of Abu Dhabi

13. UAE Fire & Life Safety Code, September 2018

14. AGES-GL-03-001 - Facility Layout and Separation Distances

Guidelines

DOCUMENT CLASS – 1 Page 12 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Sl. No.

Document Title

15. AGES-PH-03-002 - Fire & Gas Detection and Fire Protection System

Philosophy

16. AGES-SP-03-001 - Escape, Evacuation, Rescue & Life Saving

Appliances (EER & LSA) Specification

17. AGES-SP-03-002 - Active Fire Protection System

18. AGES-SP-03-003 - Building Safety Specification

19. AGES-SP-03-004 - Human Factors Engineering

20. AGES-SP-03-005 - Specification for Hazardous Area Classification

(Supplement to EI 15)

21. API RP 14C - Recommended Practice for Analysis, Design, installation

and Testing of basic Surface Safety Systems for Offshore Production Platforms

22. API RP 55 - Recommended Practices for Oil and Gas Producing and Gas Processing Plant Operations Involving Hydrogen Sulphide

23. API RP 521 - Guideline for Pressure Relief and De- Pressuring

Systems.

24. API RP 2021 - Management of Atmospheric Storage Tank Fires

25. API RP 2030 - Application of Fixed Water Spray Systems for fire

fighting

26. API RP 2218 - Fireproofing Practices in Petroleum and Petrochemical

Processing Plants

27. BS 5378 - Safety Signs and Colors (& 92/58/EEC - 24.6.92 - EEC

Directive)

28. BS 336 - Specification for firehose couplings and ancillary equipment

29. AMC 70 - Standards, guidance and information regarding heliports

30. AMC 71 - Standards, Guidance And Information Regarding Helidecks

31. EI 15 - Model Code of Safe Practice Part 15 Area Classification for Installation handling flammable fluids, 4th edition, June 2015

IEC 60079 - Electrical Apparatus for Explosive Gas Atmospheres

IEC 60331 - Test for Electrical Cables under Fire Conditions – Circuit Integrity

IEC 60332 - Test for Electrical Cables under Fire Conditions – Flame Spread

IEC 60529 - Degree of Protection provided by enclosures (IP Code)

IEC 61508 - Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related Systems

ISO 14001 - Environmental Management Systems

DOCUMENT CLASS – 1 Page 13 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Sl. No.

Document Title

ISO 15664 - Acoustics - Noise Control Design Procedures for Open Plant

39. NFPA 10 - Standard for Portable Fire Extinguishers

40. NFPA 11 - Low, Medium and High Expansion Foam

41. NFPA 12 - Carbon Dioxide Systems

42. NFPA 13 - Installation of Sprinkler Systems

43. NFPA 14 - Standpipe, Private Hydrant and Hose Systems

44. NFPA 15 - Standard for Water Spray Fixed Systems for Fire Protection

45. NFPA 16 - Installation of Foam-Water Sprinkler and Foam-Water Spray

Systems

46. NFPA 20 - Standard for Stationary Fire Pumps for Fire Protection.

47. NFPA 25 - Standard for Inspection, Testing & Maintenance of Water

Based Fire Protection Systems

48. NFPA 30 - Flammable and Combustible Liquids Code

49. NFPA 72 - National Fire Alarm Code

50. NFPA 101 - Life Safety Code

51. NFPA 414 - Standard for Aircraft Rescue and Fire-Fighting Vehicles

52. NFPA 1901 - Standard for Automotive Fire Apparatus

53. NFPA 2001 - Clean agent fire extinguishing system

54. OGP - Risk Directory 2019

55. OSHA - Occupational Safety and Health Administration

56. SOLAS - International Convention for Safety of Life at Sea (SOLAS)

57. TNO yellow book - Methods for calculation of physical effects

58. TNO purple book - Guidelines for Quantitative Risk Assessment

1-CF0000-04-PHL-0004 - Isolation Vent And Drain Philosophy

1-CF0000-04-BOD-0101 - Offshore Process Design Basis

1-CF5100-15-PHL-0201 - Emergency Shutdown System Philosophy

1-CF0000-04-PHL-0005 - Overpressure protection philosophy

1-CF0000-04-PHL-0006 - Flaring, Blowdown and Venting Philosophy

1-CF0000-04-PHL-0008 - Process safeguarding and ESD Philosophy

1-CF0000-10-PHL-0107 - Earthing and Lightning Protection Philosophy

1-CF0000-10-PHL-0101 - Electrical Design Basis

1-CF0000-13-PHL-5560 - Environmental Philosophy

1-CF0000-16-BOD-0197 - Design General Specification – Instrument Design Criteria

DOCUMENT CLASS – 1 Page 14 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Sl. No.

Document Title

1-CF0000-16-PHL-0171 - Control and Instrumentation Philosophy

1-CF0000-26-BOD-1500 - HVAC Basis of Design

1-CF0000-52-PLN-5801 - Project HSE plan

1-CF0000-40-PHL-0003 - H2S Philosophy

1-CF0000-40-BOD-0004 - Fire Protection Design Basis

1-CF0000-40-PHL-0005 - F&G Detection Philosophy

1-CF0000-40-PHL-0006 - EERA Philosophy

1-CF0000-40-SPE-0040 - Safety Technical Specification – Non Process Buildings

1-CF0000-40-SPE-0041 - Safety Technical Specification – Process Buildings

1-CA0000-59-PHL-0001 - Basic Engineering Design Data (BEDD)

79. TENE-HGDP-59-DCA-0033_B - Offshore – Separation Distances in

Drilling Centres, GOP and CLQ

80. TENE-HGDP-59-DCA-0026_A - GOP HP Flare Stack Height

DOCUMENT CLASS – 1 Page 15 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

SCOPE

The scope of this philosophy is to define the HSE principles/basis adopted during the design phase of the ADNOC Hail and Ghasha Development Project – Package 1 – Offshore Facilities.

The EPC design will utilize the latest version of the UAE Local Codes and Regulations, ADNOC HSE standards, ADNOC AGES standards, and International Codes and Standards where applicable to the design in the development of the Hail & Ghasha Design.

This HSE philosophy provides the primary HSE objectives and approach for the safety, fire protection, fire detection, escape/evacuation, environment protection and noise control. However, details HSE design requirements for the above main areas of HSE design are addressed in following dedicated philosophy documents.

• H2S Philosophy (1-CF0000-40-PHL-0003) • Fire Protection Design Basis (1-CF0000-40-BOD-0004) • EER Philosophy (1-CF0000-40-PHL-0006) • F&G Detection Philosophy (1-CF0000-40-PHL-0005) • Environmental Philosophy (1-CF0000-13-PHL-5560)

DESIGN PHILOSOPHY

As per ADNOC HSE-GA-ST07, the approach towards hazard management of the facilities design shall consider the following in the order of priority.

• Prevention/Elimination – Measures taken to eliminate or reduce hazards at

source or to reduce the likelihood of a hazard being realised.

• Control – Measures taken to keep hazards within the design envelope, be it through containment or control systems or reactions to events that could result in an incident.

• Mitigation – Measures taken to respond to a hazard once an incident has

occurred either to bring it back under control or limit its effects.

• Recovery – Measures taken to recover from an hazardous event using appropriate response and recovery measures i.e., ERP, usage of PPE’s etc.,

The design shall include the principles of Inherently Safe Design. However, should hazardous events occur, they should be promptly detected and acted upon, with the aim of reducing the risk to personnel and the environment and minimizing the damage to equipment, plant and structures. The evaluation of the required control and mitigation measures will be based mainly upon the extent of consequential effects of an accidental event and adopting a risk-based approach.

6.1

Principles of Inherent Safety

The facilities on the ADNOC Hail and Ghasha Development shall be designed such that they are, as far as reasonably practicable, inherently safe, i.e. designing of processes and products in such a way as to eliminate hazards completely or sufficiently minimize their magnitude and negate the need for elaborate safety systems incorporated in the design. This hazard elimination or reduction is achieved via means which are inherent to the process and, as such, are permanent and inseparable from it.

DOCUMENT CLASS – 1 Page 16 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

To achieve the above said objectives, four primary strategies in line with ADNOC HSE standard, HSE-RM-ST13 will be followed as below:

• Minimize – use smaller quantities of hazardous substances (also referred

to as Intensification or, if removed entirely, Elimination).

• Substitute – replace a material or process with a less hazardous one. • Moderate – use less hazardous process conditions, a less hazardous form of a material or facilities chosen to minimize the impact of a release of hazardous materials or energy (also called Attenuation).

• Simplify – design facilities that eliminate unnecessary complexity and make operating errors less likely and that are forgiving of errors which may be made (error tolerance).

6.2

Hazard control, mitigation and recovery

As it is not possible to totally eliminate hazardous occurrences, specific measures shall need to be implemented to control and mitigate the extent of the event and to provide the means to recover from the event.

The following measures, but not limited to, will be included in the design to control, mitigate, and recover from hazardous events:

• Fire and gas detection system to detect a fire or a flammable / toxic gas leak.

• Emergency shutdown systems to isolate the plant.

• Emergency depressurisation systems.

• Layout optimisation to reduce the size of any resultant explosions, toxic

release and potential escalation.

• Active Fire Protection (AFP) to mitigate any potential fire scenarios.

• Passive Fire Protection (PFP) to prevent escalation.

• Emergency power via Uninterrupted Power Supply (UPS) to preserve the

ability to monitor and control an accident.

• Suitable and reliable Audio visual alarm /general alarm system to warn

personnel of any incident so that they can take appropriate action.

• Adequate access for rescue of injured persons, emergency evacuation, and

maintenance.

• Adequate escape routes to a safe muster area.

• Toxic Gas Refuge/Muster facilities which are temporary safe location for

sheltering.

• Evacuation facilities (including Survival craft and life-saving appliances as applicable) which are appropriately sized for the expected manning levels. Recovery measures in the form of Temporary Refuge (TR) as required where personnel can survive, monitor and respond to an incident or emergency response.

DOCUMENT CLASS – 1 Page 17 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

PROJECT HAZARD & RISK MANAGEMENT PROCESS

As part of the hazard and risk management process, following hazard and risk assessment studies shall be performed for the project aiming to identify the main hazards and to evaluate whether or not the associated hazard levels are acceptable when compared with regulatory and ADNOC criteria.

All the studies / workshop described in the following sections (from 7.1 to 7.15) will be carried out by selected Third Party, approved by Company, who will prepare also the related TOR.

Proper follow up of the recommendations raised by these studies is ensure through the “HSE action tracking register”. These studies/reviews are intended to identify, evaluate and assess the hazards and demonstrate that the residual risks from the Project facilities are As Low As Reasonably Practicable (ALARP). ALARP will be achieved/assured through the application of the Project HSE Objectives, ADNOC HSE Standards, Risk Management Process, HSE Management Tools, etc.

7.1

HAZID/ENVID/OHID study

HAZID/ENVID/OHID study shall be performed for project scope. The focus of study is to identify the potential hazards and threats at the early stage of the project and provide recommendations to eliminate/minimize during the EPC design.

HAZID/ENVID/OHID review shall be performed in compliance with COMPANY standard “HSE-RM-ST03”, and HAZID/ENVID/OHID TOR, Document Number, 1-CF0000-40- SOR-0009-00.

7.2

Inherently Safer Design Review – ISD review

ISD review shall be performed to evaluate opportunities in design to apply ISD principles to eliminate/minimize the hazards. ISD review shall be performed in compliance with COMPANY standards Inherently Safer Design – doc. n. “HSE-RM-ST13” and ISD TOR prepared for the workshop, Document Number 1-CF0000-40-SOR-0008-00.

7.3

Hazard and Operability (HAZOP) review

HAZOP review shall be performed for the project facilities to identify and assess all potential process related hazards, operability and maintainability. HAZOP marked up PID’s will be utilized for performing the study using guideword approach. HAZOP review will be conducted in compliance with COMPANY standards Hazard & Operability Study (HAZOP) Standards – document no “HSE-RM-ST04” and “HAZOP / SIL REVIEW PROCEDURE” (ADNOC Doc. No. PK1-03.B.12). An HAZOP TOR will be prepared for the Project, Document Number 1-CF0000-40-SOR-0010-00.

7.4

SIL Study

SIL assessment as per ADNOC standard shall be performed to assess the SIL rating/classification of all identified Safety Instrumented Functions (SIF). SIL selection shall follow the IEC 61508 and IEC 61511 standards. Semi-quantitative SIL assessment for all safety instrumented functions (SIFs) shall be carried out using LOPA methodology.

The SIL Study will be performed in accordance with ADNOC Standards & COMPANY procedure for SIL workshop including following as a minimum.

DOCUMENT CLASS – 1 Page 18 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

o SIL Determination Standard– doc no “HSE-RM-ST05”

o HAZOP / SIL REVIEW PROCEDURE” (ADNOC Doc. No. PK1-03.B.12)

The requirements of the above mentioned documents are merged during the detail design in the document no. 1-CF0000-40-SOW-0017-00 (Scope Of Work For SIL).

A SIL TOR will be prepared for the Project, Document Number 1-CF0000-40-SOR-0011- 00.

SIL review will follow HAZOP review.

Following SIL/LOPA Assessment, the Safety Requirement Specification (SRS) for the identified safety instrumented functions shall be prepared and also SIL verification report, whose purpose is to demonstrate the adequacy of the SIS that implement the SIF.

7.5

PHSER Review

PHSER stage 3 review for Detail Design phase shall be performed to assess the HSE impacts due to the project and the measures taken by the project team to minimize adverse consequences and to ensure design for HSE Integrity. PHSER study will be performed based on PHSER TOR, Document Number, 1-CF0000-40-SOR-0011-00 prepared in line with ADNOC standard, HSE-RM-ST11. PHSER 3 review shall be conducted near completion (80%) of Detailed Engineering stage.

PHSER 4 & PHSER 5 Shall be also conducted to cover construction, commissioning and start up.

7.6

Fire and Explosion Risk Assessment (FERA)

FERA study shall be performed to identify and assess potential fire and explosion hazards and associated risk, adequacy of the separation distances and firefighting provisions considered to minimize escalation. Consequence and risk based approach shall be followed for performing the FERA study. The study will be performed in line with the requirements stated in ADNOC HSE-RM-ST09.

The consequences and likelihoods of hydrocarbon releases shall be modelled using a range of leak sizes to represent potential release scenarios for each hazardous process streams. The following results & conclusions shall be included in the report.

Hydrocarbon Source Inventory, Frequency Analysis and Outflow Modelling (that are the input for safety studies) for each of the isolatable section on the H&G facilities are integral part of the QRA and Safety Studies to be developed as part of the PROJECT.

The purpose of FERA study is to verify the fire zone segregation and the active and passive fire protection systems requirement. Fire zone definition assists in managing the separation distances between independent plant, emergency shutdown, flare design and defining firewater requirements. Potential for escalation of an initiating event will be verified and escalation assessment will be carried out. Suitable recommendations will be provided where there is a shortfall to minimise the fire and explosion risks.

7.7

H2S Zoning Assessment

As the facilities handle very high H2S content (>30 mole%), H2S zoning study shall be performed as per ADNOC standard requirements to determine the boundaries of different H2S zones (RED, AMBER, YELLOW, EPZ and EAZ) and associated design and operation requirements in line with ADNOC HSE-OS-ST21.

DOCUMENT CLASS – 1 Page 19 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

7.8

Escape, Evacuation and Rescue Assessment (EERA)

EERA study shall be performed to assess the performance of escape, evacuation and rescue (EER) provisions, in case of any potential major accidental scenarios.

EERA goals shall be verified as part of the study to ensure compliance and also provide input to the development of Emergency Response Plan. EERA study shall be in line with ADNOC HSE-RM-ST07 requirements.

7.9

Emergency Systems Survivability Analysis (ESSA)

An emergency system is a system which could be critical to the safety of personnel at the facility during the occurrence of a Major Accident. The emergency systems are identified using HSECES identification register and these will be reviewed against any potential impairment identified from FERA and QRA studies.

The ESSA study will evaluate the duration for which the emergency system is required to remain available and survive a Major Accident. It will also identify any additional requirement, if found vulnerable to Major Accident. ESSA study shall be in line with ADNOC HSE-RM-ST08 requirements.

7.10

Quantitative Risk Analysis (QRA)

QRA study shall be performed to demonstrate that the risks associated with the Project facilities are within the ADNOC acceptability risk criteria and also assist in risk based design development of the Project. QRA study shall be prepared in line with ADNOC HSE-RM- ST10 requirements. Latest ADNOC risk matrix and criteria to be used for the Project are attached in Appendix 2.

Also, SIMOPS Risk shall be evaluated to allow for safe construction of the offshore future facilities while facilities in CONTRACTOR scope of work are in operation.

7.11

CFD Modelling

CFD model shall be performed in line with the requirements stated in HSE-RM-ST14. Appropriate software as stated in HSE-RM-ST014 shall be considered for modelling.

Specifically, the CFD modelling shall cover:

1. Explosion scenarios

2. Flammable gas dispersion feeding into explosion modelling

3. Toxic gas release governing cases

4. Flare system flammable and toxic gas dispersion

Specifically for the project, two CFD modelling reports are required. One covering the first three points above (i.e., plant facilities) and another covering the flare system.

Exceedance curve method (as per HSE-RM-ST014) shall be adopted to estimate the overpressure levels reaching receptors. Therefore, a probabilistic approach shall be used.

7.12

Human Factors Engineering

Human Factors Engineering (HFE) shall be part of the PROJECT in accordance with COMPANY’s AGES-SP-03-004.

DOCUMENT CLASS – 1 Page 20 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

The HFE activity will be developed through HFE Design analysis, HFE design validation and HFE plan for Construction phase.

The following will be covered by HFE analysis:

o PLANT LAYOUT AND DESIGN – HFE will focus on operability and maintainability of equipment and instruments, valves, location of stairways, ladders, platforms, walkways and railing, anthropometric Range, Signage and labelling.

o HUMAN MACHINE

INSTRUMENTATION INTERFACE & RELATED REQUIREMENTS – HFE will focus on alarms, Local Control and Display Panels, instruments, Control Panel Signage and labelling, Human Machine Interface (HMI) Design, Control Room design and Layout, Remote Operations.

o

MANUAL HANDLING AND LIFTING REQUIREMENTS - When designing and constructing machinery, the essential requirements for safety and health. The hazards of the machine, installations, equipment and consider these hazards related to the life cycle of the machine. (refer to HSE-OS-ST17 Manual Handling).

the design shall meet

o WORKING ENVIRONMENT - Specifically HFE will focus on: noise,

Lighting, vibration, temperature, ventilation, Weather Protection.

o HUMAN RELIABILITY AND PERFORMANCE - Impact of Personal

Factors.

o Valve criticality analysis

7.13

SIMOPS review

The Simultaneous Operation (SIMOPS) is defined as two or more operations or activities occurring at the same time or same location which, due to their interactions, results in an increased operational complexity and increase level of risk.

As part of the project, SIMOPS workshop shall be conducted to identify the concurrent activities and ensure each of the SIMOPS activities have their own plan in full knowledge of each potential hazard which could affect the other parties. The SIMOPS plan between various execution parties detailing the organization, policies, procedures, responsibilities and controls is necessary to ensure full aspects of HSE working practices to bring down the potential risk within tolerable region with ALARP demonstration.

7.14

Environmental Impact Assessment (EIA)

The main objective of EIA is to evaluate quantitatively, or where this is not possible, qualitatively, the potentially significant impacts to the environment resulting from project activities.

This requires identification of all potential impacts (from routine and non-routine operations and activities) in a systematic manner, following which an assessment of the significance of each impact is then undertaken. The EIA shall be performed in line with EAD and ADNOC requirements.

Where significant adverse impacts are identified, alternative strategies, methods and/ or technologies will be proposed ensuring that such impacts are minimised to an acceptable degree, if not removed entirely. The selection of mitigative options should be in

DOCUMENT CLASS – 1 Page 21 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

compliance with all regulatory requirements and shall be assessed through Best Available Techniques (BAT) in line with ADNOC PPC Standard, HSE-EN-ST02.

Environmental Baseline information have been provided by COMPANY for the project scope and the same will be utilized for performing the Environmental Impact Assessment study. The EIA study will be performed based on the requirements defined in scoping study in line with ADNOC HSE-EN-ST01 requirements.

Third party Consultant performing EIA shall be approved by ADNOC and EAD approved “Class A” consultant (for Environmental). EIA report shall also follow EAD technical guidelines and EIA scoping / TOR.

A separate Environmental Philosophy, document no 1-CF0000-13-PHL-5560 will be prepared for the project scope which will define the detailed environmental requirements.

7.15

HSE Impact Assessment (HSEIA) – Detail Design phase

HSEIA – Detail Design Phase shall be prepared for the project as per ADNOC HSE-RM- ST02 requirements.

In addition to the deliverables listed in the above sections even the following studies/reports will be prepared as part of HSEIA requirements.

• COMAH study

• OHRA study

• Bow Tie Workshop and report

• HSECES Identification and Performance Standards

• Waste Management plan guidelines and framework for Operations

• EIA study

• Noise study

• Air Dispersion Modelling Study

• Social Risk Management Study

• External Stakeholder Engagement Plan

PRINCIPLES OF PLANT LAYOUT

The plant layout shall be developed to support the overall philosophy in terms of inherent safety, compliance with good practice and, ultimately, demonstrating that the risks to people and the environment are ALARP.

The layout shall ensure the desired levels of safety are achievable, while also providing access for construction, operation, maintenance and emergencies, and allow for expansion at the lowest overall cost.

The layout of an installation shall reduce probability and the consequences of accidents as below:

• Minimize the possibility of hazardous substances accumulations and spread

of both flammable/ toxic liquids and gaseous fluids;

• Minimize the probability of ignition;

DOCUMENT CLASS – 1 Page 22 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• The facilities shall be segregated between hazardous and non-hazardous areas, to minimise impact to activities, with occupied buildings (and areas) located upwind (in terms of prevailing wind direction) of the hazardous areas;

• Minimize the consequences of fire and explosions and thereby reduce

escalation risk;

• Facilitate effective emergency response; and

• Provide adequate arrangements for escape and evacuations.

Measures that shall be utilized to achieve these principles include, but are not limited to:

• The plant layout should consider the geographical limitations of the site;

• Orientation with respect to the dominant wind direction to minimize the likelihood of a gas release or smoke drifting towards onsite occupied buildings, accommodations and primary evacuation means;

• Optimisation of layout considering equipment spacing, escape routes to reduce consequence of accidental release of hydrocarbons, separation between potential ignition sources and hydrocarbon inventories, improved natural ventilation, prevailing wind, and minimised hydrocarbon inventories;

• Use of proper codes & standards for engineering of equipment and piping;

• Minimizing small bore pipe work to the extent possible or route/protect to

reduce the possibility of mechanical damage;

• Limiting ignition sources by proper selection of electrical and instruments

components based on area classification drawings;

• Locating permanent ignition sources such as heater/flares preferably upwind

or crosswind of the facility;

• Safe disposal of hazardous substances (provision of proper closed drain and

open drain systems for hydrocarbons draining & venting);

• Control and mitigation of accidental releases (by means of proper ESD systems, remote operated valves, suitable Fire & Gas Detection Systems and proper active/passive fire protection measures);

•

Identify and address issues related to constructability such as designing equipment lifting lugs considering the full dressed up weight, access & clearances needed at the time of erection and installation of equipment / piping / cabling, and requirements of temporary fall protections;

• Distances for transfer of materials between plant/storage units to a minimum

to reduce costs and risks;

• Location of hazardous materials facilities as far as possible from site

boundaries and public living in the local neighbourhood;

• Design of the facility shall be suitable for sour/toxic services and all the HSE

requirements shall be applied as per ADNOC HSE-OS-ST21;

• The plant layout should consider access for emergency services;

DOCUMENT CLASS – 1 Page 23 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• The plant layout should consider controlling access of unauthorised

personnel and vehicles;

• The layout of the facilities shall ensure safe construction of Phase 3/deferred facilities while Phase 1 and Phase 2 facilities are in operation. Similarly, layout of the facilities on drilling island shall ensure safe SIMOPS i.e., drilling and operation of the facilities.

8.1

Plant Layout

The layout shall be configured so as to minimise the potential of hazard escalation, following occurrence of any undesirable hazardous event by following practices in line with ADNOC and international standards as below.

8.1.1

Common

• Provide adequate space for safe access of personnel and equipment (fixed and temporary) for operation and maintenance. Suitable access and walk ways shall be provided with due consideration for the escape and safety.

• Avoid, as far as possible, locating critical live process equipment within the crane operational/mechanical handling area to prevent potential loss of containment event from dropped loads. Where this cannot be avoided, alternate recommendations should be considered.

• The plant layout should have provision of sufficient lay down areas, which should be located so as to avoid routine lifts, over unprotected hydrocarbon handling equipment and Pipe work.

• Access for firefighting and emergency response shall be provided in line with

ADNOC AGES requirements.

• No HC piping of any kind shall be routed through control rooms, electrical

and instrument rooms.

• Layout shall be designed such that risk of fire spread between areas is reduced so that a fire or other emergency will be contained in the area of origin. This will also allow for the safe and effective isolation of units from its operating neighbours when shut down for maintenance.

• Proper consideration shall be given for access and maintenance.

• Due consideration shall be given to the prevailing winds while locating vents.

• The buildings to be provided as part of the project are to be adequately protected against gas ingress, blast overpressures and heat radiation from a possible loss of containment scenarios based on their criticality.

• Maximum separation, as far as reasonably practicable, between emergency service system (such as fire water system, emergency power distribution system, communication system, escape, evacuation facilities etc.) and hydrocarbon/hazardous chemical containing equipment.

• Pig Launcher or receiver doors should not face plant equipment/facilities outboard to minimize the possibility of any projectiles hitting personnel or

DOCUMENT CLASS – 1 Page 24 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

other equipment. In case the same is not possible, barrier/wall shall be provided to prevent missile effect.

• Two means of escape shall be provided from working areas and access platforms having a length more than 7m. A clearance height of 2.3m minimum shall be maintained on all escape routes. Primary escape routes shall be 1.2m width in all areas except in H2S RED zone where 1.5m width shall be considered.

• The minimum width of the walkways (elevated or at grade) shall be 1.0m. However, Platforms in Red Zones shall provide minimum clear access width of 1.2m.

• Use of Ladders shall not be permitted in H2S Red Zone areas. Out of red zone, secondary escape may be provided by vertical ladder where the provision of a secondary staircase is not reasonably practicable (subject to COMPANY approval). In such cases the vertical ladder shall be designed to allow safe and efficient escape donning SCBA/EEBA.

• Air intakes for internal combustion engines and turbines, air compressors, inert gas generators, forced draft furnace, buildings including substations, containing unclassified electrical equipment, and boilers shall be properly located to prevent ingress of flammable gas/ vapours.

• Selection of the new pipeline routing shall take into consideration the nearby inhabited areas and any installations (such as existing Subsea Pipelines, power lines, etc.), environment and accessibility for maintenance/ inspection.

Plant layout shall be developed considering adequate provision for Escape, Evacuation and Rescue measures as detailed in the EERA Philosophy (1-CF0000-40-PHL-0002-00).

8.1.2

Offshore Island facilities

Additional considerations for offshore artificial island facilities are as follows:

•

Inter tank spacing and separation distances between tank and boundary line and tank and other facilities shall be maintained as per standard requirements.

• Proper bund/dike wall to be designed for secondary containment of storage

tank volume in case of emergency.

• Routing of hydrocarbon piping through utility areas shall be minimized. When routing of hydrocarbon piping through utility areas cannot be avoided, all connections shall be welded.

• Suitable roadways should be provided for approach to process facilities and

tank sites by mobile firefighting equipment and personnel.

• Tank farms should preferably not be located at higher levels than process

units in the same catchment area; and

• Storage tanks holding flammable liquids should be installed in such a way that any spill will not flow towards a process area or any other source of ignition.

DOCUMENT CLASS – 1 Page 25 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Minimum separation distance between different facilities envisaged shall be as per the guidance provided in ADNOC AGES-GL-03-001 & GAP guidelines. Refer to Appendix 1 for separation distances details extracted from AGES-GL-03-001. These tables extracted from AGES-GL-03-001 shall be read in conjunction with dedicated DCA issued by Re-FEED Contractor and approved by Company to TENE-HGDP-59-DCA-0033 (refer “OFFSHORE – Separation Distances in Drilling Centres, GOP and CLQ”). The separation distances will be further validated based on the FERA/QRA studies performed as part of the project scope and suitable mitigation measures will be proposed as required.

•

In order to reduce the congestion level and reduce overpressure, the distance of 9.1 m from GOP Modules (PAU) to Pipe Rack North-South in the Process Area will be maintained as per COMPANY HSE requirements. Moreover, such aforementioned distance will be also maintained between Lift Gas Compressor PAUs and relevant Piperack.

8.1.3

Offshore riser/structure

Additional considerations for Offshore platforms are as follows:

• Design of the risers shall include measures to protect them against damage

due to vessel impact.

•

In offshore towers equipped with stairs, the stairway landing leading to the primary escape route shall be 1500mm wide for platforms in red zone, and 1200mm wide for platforms in other zones.

8.1.4

PAU/PAR

Where the plant layout developing consider the possibility of the use of multilevel Pre- Assembled Unit (PAU) the following shall be considered:

•

It is generally preferred that equipment is installed at ground level to ease access. However due to lack of space or the need for gravity flow between equipment multiple level structures may be needed.

• Where a fire risk exists, the top of any multi-level structure should be within range

of fire hydrants or monitors or shall have its own firefighting system.

• Where multi-level structures are unavoidable, it is preferable to position liquid containing equipment on the lowest level to avoid any spills and drips affecting people and plant below them, so mitigating the risk of escalation.

• The decks of levels above the ground (or lowest) level should be grated, so far as practicable, maximize ventilation and therefore mitigate the risk from potential VCE events

With specific reference to the PAR (Pre-Assembled Rack) the following shall be considered as practicable:

• Piping carrying liquid should be placed on the lower parts of a multi-level piperack, so far as practicable. This is to avoid dripping liquid escalating an initiating fire scenario and also allows any gas carrying pipework at the higher elevations to disperse into free air.

DOCUMENT CLASS – 1 Page 26 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Piperacks within a Process Unit should be arranged in straight runs so far as

practicable and shall not be routed over the top of equipment items (or piping with flanges) that contain hazardous material.

• This is to limit the amount of congestion in the area, which is beneficial against

potential VCE, and will help avoid escalation in the event of a fire from nearby item of equipment (or flange).

IGNITION CONTROL (HAZARDOUS AREA CLASSIFICATION)

The extent and definition of hazardous areas on the platform shall be according to the recommendations of Energy Institute (EI) publication EI 15.

The reasons for classifying the installation into hazardous areas are to:

• Reduce to an acceptable minimum level the probability of coincidence of a

flammable atmosphere and an electrical or other source of ignition.

• Ensure that electrical and mechanical apparatus is of an appropriate design.

• Assist in the location of air inlets for ventilation systems or combustion

equipment.

The overall design philosophy is to make the installation as safe as possible by minimising the sources of release contributing to a flammable atmosphere, ensuring efficient ventilation to disperse any gas which is released and minimising the ignition potential of any electrical or mechanical equipment located in hazardous areas.

The hazardous area schedule and drawings shall be produced to identify the hazardous classification of zones, flammable material grades, temperature class and sources of releases.

The Hazardous Area Schedule shall provide all the information needed to generate Hazardous Area Classification Drawings. The drawings shall specifically address the location of all equipment units, tanks and vents, and the extent of all hazardous zones.

The hazardous areas associated with drilling and well workover shall be clearly defined within the drilling Contractors scope and where hydrocarbons are involved appropriate classification shall be applied.

The hazardous area classification shall be in accordance with the following references as applicable:

• EI Model Code of Safe Practice, Part 15: Area Classification for installations

handling flammable fluids (Energy Institute) latest edition.

• British Standard BS EN 60079 part 10

•

Institution of Gas Engineers Safety Recommendations SR25, (2001)

The hazardous area classification thus identifies the sources of hazardous and a flammable source is an important part of the basis for layout, as it gives requirements to:

• Determining the layout of processing equipment on the installation;

• Location of combustion air inlets and exhausts outlets for internal combustion

engines and fired units;

• Location and use of ignition sources;

DOCUMENT CLASS – 1 Page 27 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Ventilation system requirements;

• Building pressurization requirements;

• Select the location of clean air inlets for ventilation systems;

• Classify access roads within the Plant;

• Selection of Electrical equipment used in hazardous areas;

• Location of emergency equipment;

• Location of vent points;

• Location and design of doors and other connections between areas;

• Drainage connections between areas; and

• Operational- and maintenance procedures in hazardous areas.

Hazardous area criteria shall also be considered during selection of non-electrical equipment for use in hazardous areas, and hot surfaces (exhaust ducts, etc.) located in external areas with temperatures exceeding hazardous area temperature requirements (e.g. 200 degC for T3 Requirement) shall be avoided within the hazardous area.

9.1

Hazardous Area Definition and Criteria

Hazardous area classification is the assessed division of the facility into hazardous and non-hazardous areas, and the subdivision of the hazardous areas into zones according to the likelihood of a flammable atmosphere. Hazardous areas are those in which a flammable atmosphere may be expected to be present, during normal operations at such frequencies as to require special precautions for the construction and use of electrical apparatus. Hazardous areas are subdivided into three zones as follows:

• Zone 0. In which a flammable atmosphere is continuously present, or present

for extended periods.

• Zone 1. In which a flammable atmosphere is likely to occur in normal

operation.

• Zone 2. In which a flammable atmosphere is not likely to occur in normal

operation, and if it occurs, will exist only for a short period.

A non-hazardous area is one in which a flammable gas/air mixture is not expected to be present, and which can form part of a general restricted area within the facility in which all operations (routine or unusual) are carried out under documentary control.

All equipment/devices internal to the buildings can be suitable for safe area. HVAC Air intake and air lock are the only areas of the buildings considered as “external” to the building.

All external equipment on process facilities required to operate in emergency conditions (essential and vital) shall be suitable for Zone 1. In the event of an emergency (Confirmed fire and gas) all the Zone 2 and unclassified equipment shall be de-energised (electrical power isolation) to avoid potential ignition.

DOCUMENT CLASS – 1 Page 28 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

All field instruments shall be suitable for installation and continuous operation within a Zone 1, Gas group IIB and ignition Temperature class T3 hazardous area as per IEC 60079 as a minimum. However, Gas group IIC shall be used in areas where hydrogen is handled in line with EI 15 requirements.

In addition to the above requirements, as per ADNOC AGES-SP-03-005, during emergency releases scenarios, the extent of flammable atmosphere (LFL) may reach to unclassified area within the process area. Any equipment exposed to flammable atmosphere within LFL shall be classified as minimum zone 2 and any of these equipment that are intended to be operated during emergency shall be Zone 1 rated as a minimum. Extent of LFL from reasonably worst-case leak (typically 25 mm, Refer HSE-RM_ST01) or LFL contour for 1E- 04/yr, whichever is higher, shall be used to define the extent of process area boundary in terms of HAC.

MINIMIZATION OF LEAK SOURCES

Following leak reduction measures will be implemented in design in line with ADNOC HSE- GA-ST07 as below:

• Specific attention shall be given for leak reduction measures that represent practical and effective ways of reducing leak sources. (e.g. use of Integral Double Block and Bleed (DBB) for toxic services)

• Adequate support to prevent mechanical failure as a result of vibration, and protection against corrosion or over-pressuring of blocked-in pipe sections will be considered in design;

•

In order to minimize leak sources, the use of small bore connections shall be minimized, or where they cannot be removed, should be protected against mechanical damage. Bracing shall be provided for small bore connections that are exposed to high levels of vibration;

• Certain critical valves on riser platform should be welded to prevent leak

sources leading to MAH where practically possible;

• Flanged connections and other mechanical joints shall be minimized in order

to reduce leak sources;

• Optimum fugitive emissions class for valves in sour service will be utilized;

• No equipment/vessel shall be unprotected by taking out the Relief Valve

during maintenance (live system);

•

Isolation requirement to meet handling material hazard effect and inventory will be in line with project isolation philosophy.

• No use of glass type level gauges in hydrocarbon units.

• Corrosion Management.

DOCUMENT CLASS – 1 Page 29 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HSECES

11.1.1

HSECES for EPC phase

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

HSECES are defined as systems, equipment or procedures whose function is to prevent or limit the effect of a Major Accident Hazard (MAH) or failure could lead to a MAH. The identification of SCEs and setting of PSs is critical to the process of demonstrating that risk to personnel/asset/environment is ALARP.

System level HSECES identification shall be carried out in accordance to ADNOC Control of Major Accident Hazards (COMAH) Standard (HSE-RM-ST06). Based on the HAZID/ENVID, COMAH and other safety studies, events which could lead to a major accidental hazard will be identified. Bow Tie workshop will be conducted for identifying the prevention, detection, control and mitigation barriers, Emergency Response & Lifesaving equipment failure of which could lead to a MAH. The barriers form part of HSECES.

For each identified HSECES, performance standards in terms of functionality, availability and survivability will be defined as per HSE-OS-ST29. Performance Standard (PS) is a statement, which can be expressed in quantitative or qualitative terms, of the performance required of an HSECES. It can also be used as the basis of verification, in terms of reliability, functionality, dependency and survivability throughout the lifecycle of the installation.

HSECES Performance standard will be verified by IVB (Independent Verification Body) who will be appointed separately for verification of the HSECES PS and preparation of written scheme of examination.

11.1.2

HSECES for operational phase

Tag Level identification of HSECES and preparation of Performance standard for Operation phase shall be part of the Operation Phase HSEIA.

PROCESS SAFETY DESIGN

12.1

Acoustic Induced Vibration

Valves passing high mass flows of gas with large pressure drops can generate high sound power levels in the downstream pipework. This can induce vibrations into the piping which lead to fatigue failure in relatively short duration.

Start-up or abnormal operation can also result in valves being used at more arduous duty than during normal operations. Blowdown valves and large safety relief valves are potential sources of high sound power levels.

The noise generated inside piping downstream of PSVs and EBDVs s shall be checked to ensure that the noise induced fatigue does not occur in the system during venting.

Following corrective actions can be taken for acoustic fatigue damage:

•

Increasing the pipe-wall thickness downstream of valves;

• Specifying “quiet” valves or providing full bore valves plus downstream orifice

plates; and

• Eliminating small bore connections from flare piping wherever is possible and

DOCUMENT CLASS – 1 Page 30 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

providing special piping details to avoid stress which could initiate fatigue cracks.

A detailed AIV study shall be performed during the detailed engineering phase to confirm the AIV hazards are properly addressed and captured in design.

12.2

Flow Induced Vibration

The main sources of turbulence are flow discontinuities in the system. This in turn generates high levels of broad band kinetic energy which can propagate through the piping system. This leads to excitation of low frequency vibration modes of the pipe work causing vibrations of piping and, in some cases, pipe supports, which is generally referred to as Flow Induced Vibration. This can lead to fatigue failure at small bore branches. the study Detailed Flow recommendations shall be incorporated in the design of Piping Systems.

Induced Vibration study shall be carried out and

A detailed FIV study shall be performed during the detailed engineering phase to confirm the FIV hazards are properly addressed and captured in design.

12.3

Overpressure Protection & Relief System

All pressurised hydrocarbon equipment shall be protected against over-pressure where applicable through a primary level of protection consisting of a safety instrumented system and a secondary level of protection consisting of a mechanical device as appropriate. Refer to Overpressure protection philosophy, Document Number, 1-CF0000- 04-PHL-0005 for further details.

12.4

Process Isolation

In general equipment isolation shall be considered in compliance with ADNOC AGES- PH-08-001 and Project isolation philosophy, Document Number, 1-CF0000-04-PHL- 0004. Isolation of units shall as far as possible be provided at the boundaries of the unit in safe location.

12.5

Emergency Shutdown

Safety shutdown systems shall be provided which are independent of and in addition to other systems and equipment used for normal operation, control, and monitoring and shall act as a safety barrier in case of malfunction or maloperation of these systems and equipment.

The emergency shutdown system (ESD) shall initiate appropriate shutdown, isolation, and, if necessary, blowdown actions to prevent escalation of abnormal conditions into a major hazardous event or to limit the extent and duration of any such event should it occur.

The Emergency Shutdown Valve (ESDV) shall be:

• Tight shut off fire rated valves;

• Fail safe;

• Fire resistant cables and fire proofing of actuator (based on fire impairment);

and

DOCUMENT CLASS – 1 Page 31 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Equipped with open/ close limit switches or smart positioner with position

feedback.

For details of Emergency shutdown levels at various facilities, refer to Process Safeguarding and ESD Philosophy, 1-CF0000-04-PHL-0008.

12.6

Emergency Depressurization

Blowdown or emergency depressurisation systems shall be provided to discharge the contents of a vessel / process equipment to a safe location, reducing the stress arising within a vessel shell during fire and removing the inventory that is the source of the jet fire. The blowdown or emergency depressurisation systems shall be designed in accordance with API RP 521 and the Flaring. Blowdown and Venting Philosophy, 1- CF0000-04-PHL-0006

Hydrocarbon and toxic handling units shall be segregated into a number of separate zones, each provided with its own blowdown facilities, such that each zone can be individually blown down.

The Emergency Blow Down Valve (EBDV) shall be:

• Tight shut off fire rated valves;

• Fail safe;

• Fire resistant cables and fire proofing of actuator (based on fire impairment);

and

• Equipped with open/ close limit switches or SMART positioner with position

Feedback.

For the details of Emergency blow down at various facilities, refer to Flaring. Blowdown and Venting Philosophy, 1-CF0000-04-PHL-0006.

FIRE ZONE

Fire zones are areas of the plant sub-divided based on the potential for fire & explosion hazard to cause escalation. Fire zones are areas within the installation where equipment is grouped by nature and/or by similar level of risk attached to them.

Fire zones shall be defined according to criteria set in ADNOC Standard HSE-GA-ST07 HSE Design Philosophy. In particular:

• Thermal Radiation - 32 kW/m2 (initial release rate, T=0 minute) and 12.5 kW/m2 (T=5 minutes from initial release rate) whichever is governing from a 25 mm hole size release.

• Explosion Overpressure - 200 mbar at 1E-04/year arising from the unit.

For facilities where automatic blowdown is provided, units shall be segregated based on reasonably worse event LFL distances otherwise flare load for both fire zones should be considered in the design.

For thermal radiation at release duration of 5 minutes, engineering barriers such as emergency shutdown and emergency depressurization, pump shutdown, etc. should be considered.

DOCUMENT CLASS – 1 Page 32 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Fire zones should not overlap inside the unit. If fire zone overlaps, no equipment should be installed within the overlap if overlap is due to fire or explosion criteria. Only piping and pipe rack that shall be fireproofed (if necessary) can be installed in the overlapping areas.

Risk reduction measures such as firewall, blast wall, PFP etc. shall be considered to eliminate or minimise the fire zone overlap prior to finalization.

As a general rule, steel equipment and structure should be cooled or protected by PFP if exposed to heat radiation levels between 8kW/m2 and 32kW/m2.

Cooling should be provided at an early stage for steel exposed to heat radiations level above 32 kW/m2, since unprotected steel will quickly exceed the critical metal temperature (above 400°C) which could result in the equipment losing its mechanical integrity and causing escalation of the fire emergency.

ESDV shall be located close to the fire zone it pertains to, but far enough from the closest hazardous equipment so that it shall always ensure its shut-off function (the ESDV shall not be exposed to a radiation level of more than 12.5 kW/m2 and/or an overpressure of more than 200 mbar in case of explosion in the fire zone it protects).

Ideally the criteria valid for ESDV at facility inlet/outlet shall apply and one single ESDV shall be installed on the interconnection at sufficient distance of both fire zones. However, to reduce distances, ESDV can be located protecting a fire zone at the limit of the adjacent fire zone and vice-versa, providing the interconnection between both fire zones is suitable and the interconnecting piping can be de-pressurized in case of an emergency.

FIRE & GAS DETECTION

The objective of Fire and Gas (F&G) detection and alarm system is to provide an early warning to personnel of potentially dangerous releases of toxic and/or flammable gas or fires, and to initiate automatic actions to reduce the effects and minimize the probability of escalation, e.g. initiate relevant shutdown and depressurization.

In the event of a hazardous situation being detected, the system shall initiate the protective actions and alert personnel in the plant area, Control Room and the Fire Station by means of audible and visual alarms.

Fire and Gas detection systems must be totally independent from the process control systems, stand-alone systems (that are not an integral part of a security system), building or utility management systems and through various instruments shall continuously monitor all areas of the plant for abnormal conditions. Refer to the Project Fire & Gas Philosophy, document no 1-CF0000-40-PHL-0005 for a more detailed overview.

A detailed F&G mapping study shall also be performed to ensure adequate coverage of F&G detectors in the plant.

F&G design shall be in accordance with ADNOC Standard for Fire Detection and Protection System, AGES-PH-03-002.

FIRE PROTECTION SYSTEM

15.1

Active Fire Protection System

Active fire protection systems will be arranged, located, and of sufficient capacity to respond quickly and effectively to fire without exposing personnel/ equipment to extreme danger. Active fire protection includes fire protection and extinguishing systems including

DOCUMENT CLASS – 1 Page 33 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

fire water supply, fire water system, foam requirements, Portable and Wheeled fire extinguishers and Fire suppression systems. Active Fire Protection design shall be in accordance with ADNOC Standard for Fire Detection and Protection System, AGES-PH- 03-002, API, ISO, NFPA code and UAE Fire and Life Safety Code where applicable.

The design and engineering of the active fire protection system for the offshore facilities shall be based on plant/equipment layout and isolation philosophy.

Refer to Fire Protection Design Basis, document no 1-CF0000-40-BOD-0004 for detailed Active fire protection requirements for each of the facilities.

15.1.1

Offshore Island facilities

Hail & Ghasha Drilling Centers

Hail & Ghasha DC’s are considered as Normally Unmanned Installations but personnel will visit the facilities to undertake various operation and maintenance activities. Monitoring and control activities during normal operation will be carried out from GOP.

Due to the minimal facilities and size of the DC facilities, the primary mitigation and control measure for jet fires is quick isolation of failed inventory. The fire mitigation is primarily considered based on fire control through automatic isolation of the wells on confirmed fire detection to limit the fuel supply. There is no firewater envisaged for drilling centres based on Re FEED FERA study.

GOP

The offshore GOP facilities are Normally operated remotely from OPP with minimum manning (unattended facility) and will be designed on the basis of only one major fire occurrence at a point of time. GOP facilities will be provided with:

• Full-fledged firewater system comprising of firewater pumps, storage tanks, sea water intake system, distribution ring main, deluge systems, hydrant and monitors.

• Firewater ring main in GOP will normally be pressurized by jockey pumps using desalinated water. Firewater Main pumps will be located in Seawater intake platform and use seawater for firefighting.

• Clean agent system for critical buildings

• Carbon dioxide (CO2) Gaseous extinguishing system for enclosures

• Foam extinguishing system for tank

These systems shall be designed as per ADNOC standards, NFPA, API requirements, AGES and UAE fire code.

15.1.2

Offshore platforms (FUTURE, NOT IN SCOPE)

Ghasha Injection well and Compression platforms

Ghasha Injection well and Compression platforms are considered as Normally Unmanned Installations but personnel will visit the facilities to undertake various operation and maintenance activities. Monitoring and control activities during normal operation will be carried out from GOP.

DOCUMENT CLASS – 1 Page 34 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Due to the minimal facilities and size of these offshore platforms, the primary mitigation and control measure for jet fires is quick isolation of loss of containment. The fire protection is primarily considered based on fire control through automatic isolation of the wells/facilities on confirmed fire and gas detection to limit the fuel supply. There is no firewater envisaged for CCP/Injection Well platforms which will be assessed as part of dedicated FERA study.

15.1.3

Fire protection for Buildings

As a minimum, the design, construction, and fire detection and protection for buildings shall conform to the NFPA and UAE Fire and Life Safety code requirements and ADNOC standard AGES-PH-03-002.

Buildings classified as ordinary or high hazard will have fixed fire extinguishing systems. Requirements for a fixed sprinkler or Clean Agent system shall be assessed on an individual basis in accordance with specification criteria.

A detailed Technical specification for Non process and process buildings will be prepared as part of the project to identify the fire protection requirements of the buildings in the project scope. Refer to 1-CF0000-40-SPE-0040, Safety Technical Specification – Non Process buildings and 1-CF0000-40-SPE-0041, Safety Technical Specification - Process Buildings for details.

15.2

Passive Fire Protection

Passive Fire Protection includes fireproofing using fire-resistance rated materials on critical equipment supports and steel structures to limit the spread of fire and enable fire- fighting and evacuation. Passive Fire Protection also includes fire barriers and equipment separation, ESD valve actuators falling within fireproofing zone.

Passive fire protection requirement for the Offshore DC’s and Offshore GOP shall be determined based on API 2218 & ADNOC AGES-PH-03-002 guidelines as a minimum. Further, the potential of fire escalation to other facilities will be studied in FERA and recommendations from the study will be considered for any additional PFP requirements. A risk based approach will be adopted for identifying the fireproofing (PFP) requirements of the offshore facilities based on the outcome of the FERA study.

Fire and Blast rating of the buildings shall be finalised based on FERA study recommendations.

Refer to Fire Protection Design Basis, document no 1-CF0000-40-BOD-0004 for detailed Passive Fire Protection requirements for each of the facilities.

PAVING, DRAINAGE, ENVIRONMENTAL CONTAINMENT AND BUNDING

16.1

Paving

Plant areas where hydrocarbon leakage may occur in normal or accidental situations shall be paved and provided with adequate slope for effective draining of flammable liquid.

The process unit shall be graded to segregate adjacent processing areas from each other by varying the slope of the drained areas to the catch basins. The paved area shall have a sufficient slope to avoid accumulation of flammable liquid or vapour adjacent to or beneath equipment and pipe ways. If sloping is not practical, low kerbs may be used, provided that access is not impaired.

DOCUMENT CLASS – 1 Page 35 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

For details refer ADNOC Standard for Facility Layout and Separation Distances, AGES- GL-03-001.

16.2

Drainage

Segregation of open and closed drain systems and of hazardous / non-hazardous drains shall be followed.

The design of hazardous open drain system shall ensure rapid removal of any hydrocarbon spillage from all process areas by providing adequate slope. Potential large volumes of hydrocarbon and contaminated firewater from monitors and deluged equipment will be routed to an Accidental Oil Containment (AOC) or designated safe area such as pits or collection sumps for treatment and disposal.

All applicable drain systems should be designed in accordance to ISO13702.

Non-hazardous drain system shall be designed to handle surface water run-off of the facility. For further details, refer to Drainage Design Philosophy, 1-CF0000-07-PHL-1002.

16.3

Bunding

Bund capacity for Class I, II & III flammable liquids shall be 110% volume of the largest tank + 0.3m (1 foot) freeboard in line with ADNOC HSE-GA-ST07 requirements. For unclassified fluids (produced water etc.) tanks, 0.5 m kerbing to prevent pollution due to escape of leaks to open drain system.

Dikes should be arranged so liquids will flow (with minimum exposure to pipe ways) to a low point within the enclosure remote from the equipment producing the spillage. Accumulated liquid can then be easily drained or pumped into a liquid removal system. Drainage slopes within tank areas should ensure that any spills are drained away from tanks, manifolds or piping. Dike walls should not hinder firefighting efforts.

ELECTRICAL SAFETY

17.1

Emergency Power

The emergency power source shall be composed in whole or in part of the following:

• Diesel generator set (in Drill Centres at HLE only and GOP); and/or

• AC and DC uninterruptible power supply (UPS) systems with battery set

Supply of emergency power for the following critical systems shall be clearly defined:

• Emergency process control;

• Safe Shutdown and Safeguarding;

• Emergency lighting and escape lighting;

• F & G, Firefighting and fire alarm;

• Telecommunication and Radio System; and

• Aviation warning lights on tall structures 150m above ground level.

DOCUMENT CLASS – 1 Page 36 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Emergency power supply generation and distribution shall be separated from normal power generation and distribution to the extent that a local fire shall not put both systems out of operation.

The UPS system shall support the facilities for the duration necessary to achieve emergency shutdown, personnel escape and other emergency actions necessary to achieve safe control of a potential incident such as fire or gas leak.

The emergency generator system shall be equipped with a diesel day tank sized for a minimum of 18 hours operation at full load in line with ADNOC HSE-GA-ST07 requirements.

Diesel Firewater Pump controller shall be provided with battery backup. Even in case of power failure, the pump should start. The battery should be automatically charged while pump is running. Diesel day tank shall be sized based on minimum requirement of NFPA.

17.2

Battery Rooms

Battery Autonomy shall be in line with the Electrical Design Basis (ref. 69).

The battery rooms shall be installed with fire detection system on an intrinsically safe circuit, with an external Manual Alarm Call Point. Hydrogen detection shall be provided in the battery rooms.

The battery room lighting and power shall be suitable for Zone 1 hazardous area with apparatus Group IIC, Ex d / Ex de, Temperature class T1.

Two explosion proof exhaust fans shall be installed on separate circuits to remove all gases (one duty + one standby) to provide minimum of 12 (twelve) air changes per hour which is considered additional safeguard.

HVAC for the battery room shall only discharge all air outside and no air is recirculated. The damper shall be motorized and explosion proof.

Failure of duty exhaust fan unit shall initiate an alarm in the control room and start-up the standby exhaust fan unit.

The battery room floor shall be sloped with adequate drainage. Eye wash unit shall be provided at battery room in an accessible location with proper drainage for outlet water from eye wash unit to avoid flooding of battery room.

Electrical equipment and battery room for emergency power supply shall be located in separate rooms with separate exhaust facilities.

17.3

Transformers

Transformers shall be installed in unclassified area. Transformer oil pits shall be sized to contain minimum 110% of the transformers oil capacity. Fire wall shall be provided for the separation of transformers; fire wall shall extend above the conservator oil tank. For transformer fire protection requirements, refer to Fire Protection Design Basis, document no 1-CF0000-40-PHL-0004. Large Oil filled transformers having more than 500 gallons of oil will be protected by Deluge system.

17.4

Lightning Protection

Proper lightning protection provides a controlled path for the current to follow back to earth and minimizes the development of hazardous potential differences. Materials

DOCUMENT CLASS – 1 Page 37 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

adequate to withstand lightning strikes should be used; specifically, use of low impedance materials (e.g. metals) is essential.

The lightning protection system shall conform to EN/IEC 62305 – Lightning Protection and NFPA 780 - Standard for the Installation of Lightning protection Systems requirements. Also, the system shall be designed in accordance with Earthing and Lighting protection Documents Earthing and Lightning Protection Philosophy (1-CF0000- 10-PHL-0107).

17.5

Grounding Systems

Grounding system for electrical equipment shall be provided and designed as per NFPA 70 National Electrical Code and COMPANY requirements.

The minimum requirements for Electrical safety have been provided in the above sections. However, detailed electrical requirements can be within the Electrical Design Basis, 1-CF0000-10-PHL-0101. Also, the system shall be designed in accordance with Earthing and Lightning Protection Philosophy (1-CF0000-10-PHL-0107).

17.6

Earthing/Bonding

All mechanical static and rotating equipment with the potential to generate static electricity shall be provided with suitable bonding straps. The loading/ unloading hoses and couplings shall be suitably earthed. All process piping and pipelines containing Class#1 flammable liquids shall be bonded along the piping flanges to avoid potential differential and be electrically grounded to the equipment grounding system.

All fire protection systems discharge pipe work shall be bonded to earth. Bonding requirements are detailed within NFPA 70. Also, the system shall be designed in accordance with Earthing and Lighting protection Documents Earthing and Lightning Protection Philosophy (1-CF0000-10-PHL-0107).

HVAC

The design of HVAC systems for the buildings shall be in accordance with AGES-SP 14- 001 and ADNOC HSE standards.

All air inlets shall be located in non-hazardous areas, as far as practicable away from possible hydrocarbon leakage sources, and minimum 3 m from any Zone 2 boundaries.

The distance between air inlet and HVAC outlet from hazardous areas shall be such that gas from the outlet cannot enter the air inlets.

Dampers shall provide quick, reliable and effective means to prevent escalation of a fire into other areas. Dampers shall prevent ingress/spreading of gas or smoke. Gas tight dampers shall be installed in HVAC inlets and outlets (External Wall). Dampers and fans shall be interlocked to avoid abnormal pressure configurations.

Buildings which are required to be protected against flammable and toxic gas shall be positively pressurised to a minimum of 50Pa.

Air locks should be designed with inter-locks where simultaneous opening of both doors should not be possible to prevent loss of positive pressurization.

For Temporary Refuge (TR), the minimum positive pressurization time shall be verified against the duration requirement as determined in the EERA. Where it does not meet the

DOCUMENT CLASS – 1 Page 38 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

requirements, additional engineering controls shall be provided such that the duration required is met.

Mechanical ventilation/ extraction shall be provided in all food production rooms, chemical stores, toilets etc.

Air inlets shall be located facing downwind of the most prevailing wind direction to minimize sand ingress.

For further details, refer to HVAC basis of design, 1-CF0000-26-BOD-1500 and Technical Specification - Design of Temporary Refuge, 1-CF0000-40-SPE-0038.

HANDLING AND STORAGE OF HAZARDOUS MATERIAL

Suitable and safe location for the handling and storage of hazardous materials shall be provided during layout review for permanent location during operation and temporary location during construction. Secondary containment systems are to be considered along with spill prevention and recovery measures.

Hazardous waste storage areas shall be provided with adequate paving and kerbing.

The chemical hazard information (SDS, warning sign, PPE) shall be available at the hazardous chemical storages. The safety showers and eye wash stations with shade and proper drainage of waste water shall be provided near the chemical storage area.

In addition, safety or environmental related notices associated with hazardous material storage and handling shall be adhered.

SOUR / LETHAL SERVICE

A process shall be classified as a sour service based on the criteria defined in API RP 55 Appendix D.

Process stream (liquid or vapor phase) with minimum concentration of 500 ppm H2S shall be considered as “Lethal Service” in line with ADNOC HSE standard, HSE-GA-ST07.

According to HSE-GA-ST07, the following requirements shall be complied with, as minimum:

• Pressure vessel identified as lethal service shall meet the requirement of ASME SEC VIII, Div. 1, , Basis of Design for Static Equipment (1-CF0000- 22-BOD-0158-00), Design Criteria for Static Equipment (1-CF0000-22-SPE- 0229-00) and Specification for Pressure Vessels (1-CF0000-22-SPE-0231- 00)

• NACE as well M Class requirements for various fluid service shall be

identified in the Piping Material Specification and shall be followed.

• All equipment shall satisfy lethal service/ Sour Service requirements as

indicated in respective process mechanical data sheet of equipment.

EMERGENCY COMMUNICATION

In an emergency situation, the following telecommunication systems shall be available and in operation as a minimum:

DOCUMENT CLASS – 1 Page 39 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Public address and general alarm (PAGA system)

• Telephone System

• UHF radio

• Communication to shore and other installations with recording

• Hand-held radios

• CCTV

An alarm system shall be provided so that personnel in any part of the facility are made aware of the existence of an emergency and can be advised of its location and any special instructions for escape and mustering. The system shall include audible alarms and verbal announcements through Public Address and General Alarm (PAGA) system and visual alarms in high noise areas.

F&G Beacons /Sounders along with Public address & general alarm system shall also permit to alert personnel of the presence of dangerous conditions such as:

• Confirmed Gas Alarm;

• Confirmed Fire Alarm; and

• General Emergency Alarm.

Persons in control during an emergency situation shall be able to alert all personnel and give instructions. Safety related actions, work teams, and persons trapped by the incident should be able to communicate with each other and with a station located in the Assembly point/Temporary Refuge.

As a minimum, the Assembly point/Temporary Refuge shall have provision to communicate with Onshore Emergency Control Centres, nearby installation, ships etc., as appropriate.

The offshore Platforms will have provision to communicate with Emergency Control Centre in GOP.

At least two different forms of communication methods shall be available at the Assembly point/Temporary Refuge, e.g., hand-held radios and telephones.

These systems shall be designed and installed with high degree of protection against influence from fires, gas leaks, explosions, etc. to ensure continuous operations.

ESCAPE, EVACUATION AND RESCUE

The design of the facilities shall provide measures for the safe and timely escape of persons in the event of an emergency. All areas likely to be frequently manned shall be provided with at least two alternative and unobstructed escape routes, leading to the designated Muster Area(s) (TR’s)/TGR.

Escape, Evacuation and Rescue (EER) requirements are detailed within the Escape, Evacuation and Rescue Philosophy, document no 1-CF0000-40-PHL-0006.

DOCUMENT CLASS – 1 Page 40 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

22.1

Escape Routes and Other General Requirements

Access ways and escape routes shall be provided for escape and fire-fighting purposes, linking plant areas with the site roads.

• Primary escape routes shall have minimum clear headroom of 2.3m and a

width of 1.2m. In the RED ZONE their width is increased to 1.5m.

• Secondary escape route shall have minimum clear headroom of 2.3m and a

width of 1.0m.

• Two separate independent escape routes, in different directions, shall be provided from every area that is normally manned. This also applies to enclosed areas and rooms that are not continuously manned.

• Rooms where the distance from any location to the exit is less than 7m may have a single exit, however electrical rooms shall have two exits located as far apart as possible.

• All escape routes shall be marked with safety signs.

• Escape route, exit doors, travel distance, dead ends, common paths etc. shall

comply with NFPA 101 and UAE fire and life safety code.

• Escape routes shall allow easy transit of a stretcher team carrying a victim.

• Escape route should avoid passing through laydown area.

• Emergency escape gates are required in perimeter fencing.

• Emergency exit passage, door, corridors etc. shall be designed to comply with requirements of NFPA 101. All doors opening onto designated escape routes shall open in the direction of escape. Emergency exit doors shall if normally closed or locked shall be equipped with ‘Push bar to open’ fixtures.

Consideration shall be given to the evacuation of injured personnel on stretchers. For elevated locations requiring frequent access, for example once every shift, stairs shall be provided and vertical ladders shall provide only a secondary means of escape. Localised exceptions to this may be accepted on a case-by-case review basis.

Emergency lighting with standby power supplies shall be provided where necessary to ensure safe escape in the event of power failure. Where the escape route is in an enclosed area in hazardous service, consideration shall be given to any need for low level lighting to illuminate the route in the event of smoke logging.

Emergency entrances and exits shall be located in perimeter fencing as needed to ensure that there is a minimum of two routes to safety.

At least 2 TGR are required at the established safety distance, taking into consideration the possibility of different wind directions. TGR shall be located sufficiently far from potential release sources in order to provide a good level of protection to personnel.

All escape routes on facilities where a hydrogen sulphide hazard exists must be passable by personnel wearing self-contained breathing apparatus. All escape routes must be identified and marked. For installations, a means of communication with the control room shall be provided.

For escape route specific requirements in Red / Amber zones, refer to section 29 of the present philosophy.

DOCUMENT CLASS – 1 Page 41 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

The Escape, Evacuation and Rescue Analysis (EERA) will demonstrate during the detail design the effective provisions for safe evacuation of all personnel.

The Escape, Evacuation and Rescue shall consider the evacuation from the PAU/PAR and the other elevated structures.

22.2

Means of Escape and Evacuation (Offshore)

Primary means of evacuation from offshore facilities (including GOP and Drilling Islands, Compression and Well Head platform (FUTURE, NOT IN SCOPE) is by Crew boat and secondary means is by TEMPSC (for Ghasha DCs and Hail 3 DC). For Medevac, Helicopter will be used.

Tertiary means is by escape to sea through Life rafts, Life Buoys etc.

For details of evacuation means from each of the offshore facilities, refer to Escape, Evacuation and Rescue Philosophy, document no 1-CF0000-40-PHL-0006.

22.3

Rescue and Recovery

The purpose of the rescue and recovery arrangements is to ensure prompt recovery to a place of safety of personnel evacuating by TEMPSC, or entering the water during escape or because of a man overboard (MOB) incident. This is normally achieved through arrangements with ‘local’ search and rescue (SAR) helicopters and Standby Vessels/Emergency Response and Rescue Vessels (ERRV) as specified by the installation’s Emergency Response Plan (ERP).

Details about the rescue means to be provided in each facility are reported in the EER philosophy (doc. 1-CF0000-40-PHL-0002-00).

22.4

Safety Signs & Hazard Communication

The provision of safety signs is an important feature of personnel safety.

All personnel protection equipment shall be provided with Arabic / English instructions. Appropriate safety signs (Arabic/ English) shall be provided for escape routes, emergency exits and firefighting and life-saving equipment.

All chemical labels and Safety Data Sheets shall follow Globally Harmonized System (GHS) guidelines.

All safety signs shall display a pictograph in addition to text. Signs shall be luminous and reflective, language in dual English and Arabic. The size required and method of affixing, i.e., post, board, decals attached to equipment or painted lettering (i.e., hose reel cabinets) shall be clearly specified as per HSE-OS-ST27.

Appropriate environmental sign boards (information and hazard warning) indicating rare and endangered species, environmental sensitive area etc. with precautions to be taken shall be provided.

Consideration shall be given to high temperature and desert environment in selecting the design of the sign display medium.

DOCUMENT CLASS – 1 Page 42 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

VISUAL/AUDIBLE NAVIGATIONAL AIDS

Visual and audible navigational aids shall be provided for facilities to alert nearby sea and airborne traffic to the presence of the installation. The navigational aids provided for offshore shall comply with the following codes and standards:

• AMC 71 requirements

•

•

International Association of Lighthouse Authorities (IALA) Recommendations for Marking of Offshore Structures

International Civil Aviation Organisation (ICAO) Convention on International Civil Aviation.

Aviation warning lights and Aircraft wave-off lights shall be installed as per ICAO requirements.

Appropriate Helideck/Helipad Perimeter Lights and Floodlights shall be considered as per ICAO requirements.

EMERGENCY LIGHTING

Critical systems requiring electrical power shall be provided with a power supply of sufficient capacity and duration while main power generation is unavailable, to fulfill functions needed to control a hazardous event and/or to allow an installation to be safely shutdown and evacuated.

Emergency lighting forms part of normal lighting. The emergency power supply is through emergency diesel generator power distribution system. As a guidance, a minimum of 30% of total normal lighting will be supplied from emergency generator.

Emergency lighting shall be considered for below spaces as a minimum:

• All control areas and process areas

• All storage positions for firemen’s outfits

• Fire pump area and their operating positions

• All stations and rooms where fire-fighting equipment are to be installed

• All communication and emergency equipment spaces

Escape routes identified as part of the project scope shall be sufficiently lit with escape route lighting. The escape route lighting is also backed up with emergency power and in addition, escape lighting will have integral battery/back. As a minimum, 30% of the total emergency lighting in any area shall be battery backed-up.

For further details, refer to Electrical Design Basis, 1-CF0000-10- PHL-0101.

OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT

25.1

Health Hazards

All major occupational health hazards shall be identified and assessed as part of OHID/OHRA study. This assessment shall be performed in line with ADNOC occupational health standards.

DOCUMENT CLASS – 1 Page 43 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

25.2

Chemical Hazards

The general design philosophy shall be to minimize the use of chemicals to the extent possible. Routine manual handling of hazardous substances shall be avoided. Suitable areas for handling and storage of hazardous materials shall be designated. The use of automatic or remotely controlled equipment is preferred, and chemicals that are the least hazardous shall be used. Safety shower/ eye wash station shall be available near chemical handling area. The capacity and operating temperature of the safety showers shall be as per ANSI Z358.1 requirements.

Various chemicals utilized in the process facilities shall be stored, handled and disposed off as per chemical MSDS or COSHH assessment.

25.3

Physical Hazards

25.3.1

Noise

Noise control is intended to prevent personnel being subjected to excessive noise that may affect their health and ability to perform their duty in a safe manner.

Noise levels shall be limited to:

• Minimise the risk of hearing damage to personnel;

• Ensure alarms are audible;

• Permit adequate speech, telephone and radio communication;

• Maintain working efficiency.

The requirements with respect to noise levels at each location shall be based on ADNOC specifications.

ADNOC noise exposure limits are 85 dB (A) for 8 hours TWA exposure and 140 dB (C) for impulse sound pressure level exposure shall be considered in the design. Areas where noise levels exceed 85dBA must be designated as hearing protection areas and everyone entering such designated areas must wear suitable hearing protection regardless of the duration of entry.

Hazard Warning signs should be placed immediately prior to areas where noise levels exceed the defined acceptable limits. Acoustic insulation requirements within enclosed spaces shall be specified whenever the sound pressure level (SPL) exceeds the acceptable noise exposure limits, also in plant areas where (PPE) hearing protection are necessary.

For indoor areas, following noise levels shall be considered in line with HSE-OH-ST08 requirements.

DOCUMENT CLASS – 1 Page 44 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

For areas in workshops and machinery buildings where communication is required, for Workshops for light maintenance a maximum allowable sound pressure level of 70 dB(A), according to AGES- SP-01-013 “Architectural Design Basis”.

In general the following requirements shall be adopted for the purpose of employee hearing protection:

(i) All areas with continuous noise levels exceeding 85 dBA shall be considered as high noise areas;

(ii) During presence in an area or around equipment where noise levels are 85 dBA or higher, ear protection shall be required at all times;

(iii) All new projects shall be engineered, where reasonably practical, to meet the 85 dBA noise level limit; and

(iv) Permanent high noise area shall be identified with warning signage at normal points of entry.

Noise sources that may be above the speech interference level shall not be installed in the immediate vicinity of muster points. This also applies to the location of safety relief valves.

Noise study report shall be prepared where required as part of HSEIA during detailed design and shall be further updated as during the operations phase, considering the actual vendor data. After commissioning, noise survey should be conducted for the actual noise levels to verify and update the Noise Study report.

25.3.2

Vibration

Potential sources of vibration need to be reviewed and identified during the design. Design shall assess and take necessary measures to reduce any vibration to acceptable limits to avoid any damage to the equipment, pipe, supports and structures.

Equipment shall be procured to meet the vibration level as per the codes and standards and vendor’s standard practice. The vibration level limits shall be as per ADNOC HSE- OH-ST08, Physical Health Hazards Standards.

25.3.3

Heat Stress

Potential areas which could cause heat stress to Operations and Maintenance crews shall be identified and considered in the facility design. Such areas shall be provided with shading and ensuring that natural ventilation is adequate. In case of confined spaces such as valve pits, or congested areas where heat radiation from motors etc. is high, requirement of forced air ventilation shall be reviewed.

DOCUMENT CLASS – 1 Page 45 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

25.3.4

Ionizing and Non-Ionizing Radiation

The location of electromagnetic radiations source (i.e. non-Ionizing radiation) adjacent to continuously manned areas shall be avoided. Designs shall ensure Electro Magnetic Interference (EMI) sources are in compliance with International Standards.

Consider and specify requirements for all sources of radiation (ionising and non-ionising) being utilized during operations of the facilities e.g. x-ray, ionization radioactive radiations, NORM etc. Refer to ADNOC HSE-OH-ST08 in this respect. Instruments based on radioactive sources not to be used.

25.3.5

Material Handling & Dropped Object

Mechanical Handing Philosophy will be developed for the Project (Doc. No. 1-CF0000- 28-PHL-3150-00). Design / operating philosophies developed shall be further optimised to minimise the number and location of heavy / routine lifts over the hazardous plant or manned areas.

No major lifting shall be done unless a risk assessment has been carried out. Lifting of critical equipment overhead platform requires an approved dispensation.

Adequate provision shall be provided to promote safe handling of materials. Loads up to 46kg can be handled manually (by two men). Handling of loads above 46kg shall be by means of mobile handling equipment, if accessible, or permanent handling structure.

Risk from dropped objects and dynamic loads including swinging loads should be minimised by consideration of the following measures:

• Efficient use of lifting systems for the removal of equipment, transport to lay

down and lifting off the platform to support vessel.

• Minimise the elevation/ weight of lifts.

• Optimise the patterns of routing/ heavy lifts to avoid hazardous plant and

critical weak points.

• Minimise the heavy lifts involving hazardous substances such as fuel,

chemicals, toxins or pressurised containers.

Crane coverage and lay down areas shall be arranged to promote safe operations of the cranes and to avoid locating critical process equipment within the footprint area of the crane movement and minimize the risk of dropped objects.

25.3.6

Insulation/Personnel protection

Insulation or other means of protection e.g. mesh cage, mechanical guarding for personnel protection shall be installed only in accessible areas where the operating temperature of piping or equipment surfaces is expected to be above 60°C and below - 10°C.

Hazard/warning signs shall be displayed in appropriate locations to warn personnel of hot surface.

DOCUMENT CLASS – 1 Page 46 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

25.3.7

Ergonomic Hazards

Safe access shall be provided and arranged at appropriate height to facilitate production activities e.g. valve operation, routine maintenance and checks by Mechanical, Electrical & Control engineering personnel.

All gauges, indicators, valves and controls used in normal operation shall be arranged so as to be clearly readable from grade or from permanent access platforms.

Equipment is to be laid out in such a manner as to allow adequate accessibility and visibility for the operations and maintenance tasks being performed. A minimum of 1 m clearance should be provided around all sides of equipment.

Crane operator visibility during loading and unloading will be required for all lifts. Visual contact will be required between operators for all loading and offloading of hazardous materials.

For control rooms and control panels, the environment, or property the following shall apply:

• Displays and controls shall be designed to allow the operator to carry out his tasks in a safe manner in accordance with acknowledged ergonomic principles guided by ISO 11064, Ergonomic Design of Control Centres and HSE-OH- ST11, ADNOC Ergonomic standard. The number and types of displays should be minimized.

• Screens, panels, and lighting fixtures shall have a location, which provides satisfactory view in a normal working posture. It shall be easy to adjust the height and angle of computer screens and keyboards as well as their distance to the operator.

•

If visual display units (VDUs) are used, information should not be presented in a way which gives the operator memory problems or adds to his load of work. Total system overviews should be available from the displays, giving the operator opportunities to watch process performance. The design shall be based on task analysis of functions.

• Controls and displays shall be located in a logical manner with respect to frequency of use, importance for safe operation, and the movement of a control device should be consistent with the effect in direction and magnitude. Controls and displays shall be clearly marked in Arabic and English.

• Data gathering systems,

information operators need during emergency situations to facilitate correct responses, shall be integrated and be consistent in display and control conventions between the facilities. Displays shall be evaluated for prioritization of alarms, a hierarchy determined, and decision aids evaluated for exceptions to normal response.

including

• The activities shall be conducted in line with OGP Report No. 454:2011 Human Factors Engineering and AGES-SP-03-004, Human Factors Engineering in Projects.

• Plant ergonomics aspects shall be reviewed as part of facility 3D model

reviews.

DOCUMENT CLASS – 1 Page 47 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

ENVIRONMENTAL MANAGEMENT

The design of the new facilities added as part of the project will seek to implement the policy of “No Damage to the Environment” and ensure that all environmental risks have been identified and addressed, and appropriate measures taken.

Design shall recognize ADNOC commitment to zero emission, conservation of energy, managing wastes and controlling pollution through application of best available technology to the maximum possible extent in line with ADNOC Environmental standards and ISO 14001. Zero Discharge shall be implemented in MMPA protected area.

The Project will adopt the hierarchy of waste management for wastes produced at the new facilities in accordance with the requirements of HSE-EN-ST04.

Refer Environmental Philosophy, document no 1-CF0000-13-PHL-5560 for further details.

26.1

Emissions to Air

Atmospheric emissions during normal operations include combustion gases, purge gases and fugitive emissions from process equipment components, storage vessels and other sources. Atmospheric emissions consist primarily of N2 (flare purge gas), NOx, SOx, CO, CO2, H2S and VOCs. Air emission limits shall be in line with ADNOC HSE-EN-ST02 requirements.

Use hydrochlorofluorocarbons (HCFCs) and CFCs, shall be prohibited.

global warming

ozone-depleting

and

of

substances

including,

In order to comply with the requirements of Pollution Prevention and Control, good engineering practices achieving the most effective emissions reduction with due regard to economics in line with the existing practises will be used to minimise fugitive emissions.

No continuous flaring is allowed and any venting to flare shall be minimized.

No cold venting of Sour Gas/H2S.

Minimize emission of Green House Gases.

Minimize occurrence of non-routine and emergency flaring / venting.

26.2

Solid Wastes

The Project shall adopt the hierarchy of waste management for wastes produced at the new the requirements of ADNOC HSE-EN-ST04 requirements and handled as per Company approved Waste Management Plan (WMP).

in accordance with

facilities

The aim is to minimise the amount of solid waste arising, but where waste is unavoidable provisions shall be made for safe disposal in accordance with the legislation.

The solid hazardous waste shall not be discharged to marine environment but will be safely disposed-off to prescribed onshore waste handling facilities.

26.3

Liquid Wastes

Equipment and piping shall be provided with closed drain facility for draining of hazardous liquids including hydrocarbons.

Hydro-test water generated during pipeline testing shall be disposed of in line with the ADNOC requirements. Only ADNOC approved chemicals shall be used for hydro-test.

DOCUMENT CLASS – 1 Page 48 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Discharges to the marine environment shall be regulated under the Regulation for the Protection of Maritime Environment, UAE Cabinet and as per ADNOC HSE-EN-ST01 & HSE-EN-ST02 requirements. Discharge of Hydrotest water is not allowed in Buffer or core zones of Marine protected area.

Zero Discharge to Marwah Protected Area shall be complied with.

FLARE AND VENT SYSTEMS

The purpose of flare and vent system is as below:

• To dispose gaseous hydrocarbons and sour gases safely from both relief

valves and blowdown valves to atmosphere via a flare stack.

• To apply a “zero flaring philosophy” under normal operating conditions.

• Provide a safe disposal route during routine maintenance depressurization.

• Venting of equipment for maintenance, or during pigging and drilling

operations.

• To comply with

the environmental requirements and regulations

for

combustions projects.

• Vents shall not be located adjacent to any potential sources of ignition or hot surfaces, i.e., exhaust pipes or any potential manned area. Flame arresters shall be considered for the hydrocarbon vents.

• Flame arrestors shall be provided on all open vents of manholes handling AOC

and COC drain system.

• Designs shall ensure that any turbine or combustion motor exhaust should not be a source of ignition for any hydrocarbon gas leak scenario. Exhaust ducts shall be designed to be gas tight and heat insulated if necessary.

• The

individual

vent/exhaust

terminated within shall building/shed/enclosure. The vent shall always be taken to safe location which means, a minimum height of 3.5m from highest platform/roof level/ground level whichever is higher and further verified through dispersion analysis.

not

be

• Venting during normal operations and emergency releases from vents of hydrocarbons and toxic streams to atmosphere are not allowed, except for hydrocarbon storage tanks designed in accordance with API-2000

• Venting of sour gas more than 5 ppm directly open to atmosphere for any

reasons is not permitted.

The following types of flare and vent systems shall be considered for the project facilities:

• HP Flare system (GOP) – provided for flare loads from equipment and plant

with a design pressure of 11 barg and greater

• LP Flare system (GOP) – provided for flare loads from equipment and plant

with design pressure of less than 11 barg

• Flare system at DC- a single Flare is provided at each drill centre to discharge

all the blowdown loads.

DOCUMENT CLASS – 1 Page 49 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Flares shall be fitted with flare gas meters installed with online data transmission to central process control and monitoring system. There shall be flowmeter to capture low-range flow and full flare load.

H2S rich streams shall be sent to a separate flare stack with the installation of hydrocarbon purge gas assist flare burner tips or equipped with a tip of the air pre-mix type (e.g. air assisted).

Flare Gas recovery system as applicable shall be provided to recover gases during normal operation of the facilities.

Radiation modelling and gas dispersion modelling shall be used to determine the flare stack height and sterile area. Flare system design and plant equipment layout should minimize the need for operator attendance and equipment installed in locations of high radiant heat intensity.

Electrical equipment and instrumentation shall be able to withstand the heat radiation in the sterile area.

The average solar radiation of 0.964 kW/m2 (see AGES-PH-08-002, ref. Error! Reference source not found.) shall be added to the calculated radiation intensities when confirming the adequacy of the stack elevation, and the radiation from surrounding flares during coincident relief shall also be taken into account.

The criteria for radiation and dispersion limits will be as per API 521 and ADNOC HSE- GA- ST07 requirements as below:

Description

Limit

Remarks

Thermal Radiation Level

9.46 kW/m2

Maximum radiant heat intensity at any location where urgent emergency action by personnel is required. This will be used to verify the maximum heat radiation at the base of the flare. When personnel enter or work in an area with the potential for radiant heat intensity greater than 6.3 kW/m2, then radiation shielding and/or special protective apparel should be considered.

6.3 kW/m2

At the boundary of the sterile area

4.7 kW/m2

All the flare associated equipment, panels etc. shall be located outside the 4.7 KW/m2 to ensure personnel attending the maintenance work at the flare systems shall not be exposed to thermal radiation levels more than 4.7 KW/m2

3.15 kW/m2

(NOTE 2)

Property limit, or perimeter area where the fence is required. Maximum exposure time is 30 min

DOCUMENT CLASS – 1 Page 50 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Description

Limit

Remarks

1.58kW/m2 Maximum radiant heat intensity at any

location where personnel with appropriate clothing can be continuously exposed.

Flammable gas Dispersion Limits

Hydrogen Sulphide (H2S)

LFL

Within sterile

76 ppm

AEGL 3 (10 minutes) – lethal Emergency Planning Zone (EPZ) as per HSE-OS-ST21

10 ppm (NOTE 1)

Ground level concentration as per HSE- GA-ST07

Sulphur Di Oxide (SO2)

30 ppm

2 ppm

Emergency Planning Zone (EPZ) as per HSE-OS-ST21

Ground level concentration as per HSE- GA-ST07

Stability class/wind speed

2F & 10D - For dispersion calculations

2F & 14D – For radiation calculations

NOTE 1: according to DCA issued by Re-FEED Contractor and Approved by Company (see TENE-HGDP-59-DCA-0026_A - GOP HP Flare Stack Height, ref. 80), it is acceptable to have an H2S concentration higher than 10ppm at ground level outside the sterile area in case of flame out, considering that GOP handles Sour Gas and the entire plant is provided with toxic gas detectors. In addition, personnel are provided with personnel toxic gas detectors and BA/EEBA sets. The same waive-off shall be applied also during EPC phase.

NOTE 2: being DCs and GOP islands, the requirement of having 3.15 kW/m2 at boundary fence is not applicable for flare sizing. However, the radiation at the fence shall not be higher than the value used for sterile area (6.3 kW/m2) and, at the maintenance points, the radiation shall not exceed the 4.7 kW/m2.

In case there is more than one flare at a site, the sterile area of 6.3kW/m2 of individual flare shall not overlap if both or all the flares are in operation simultaneously. The sterile radii can overlap if anyone of them is in operation at any given point of time and others are spare flares and shall never be put into operation simultaneously.

PERSONNEL PROTECTION – SAFETY EQUIPMENT & PPE

The objective of Safety equipment and PPE is to provide adequate protection on an individual basis to all the personnel engaged in operation.

Personal protective equipment (PPE), first aid, breathing apparatus, safety signs and notices & means of communication shall be provided wherever necessary for the new facilities in accordance with ADNOC requirements and standards.

DOCUMENT CLASS – 1 Page 51 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Wind socks shall be provided at suitable location to assist escape of personnel in case of toxic gas release. Windsocks shall be fluorescent orange in colour and located throughout the installations in highly visible locations.

Safety equipment requirements will be identified and marked on the safety layouts as appropriate for both onshore and offshore facilities. Following is the minimum list of safety and life-saving equipment envisaged for the project scope.

• Breathing Air system (for H2S RED zone requirements);

• Breathing apparatus;

• Fire blankets;

• First aid boxes;

• Stretchers;

• Electrical safety kits;

• TEMPSC (Life Boat);

• Fast Rescue Crafts;

• Life buoys;

• Life jackets;

• Helicopter Crash Equipment cabinet;

• Chemical kit

• Emergency Safety Showers & Eye Wash Stations

HYDROGEN SULPHIDE (H2S)

Locations where a hydrogen sulphide hazard exists must be classified according to the potential threat from hydrogen sulphide based on the precautions needed to allow people a good chance to escape in the event of an accidental release of hydrogen sulphide. Further detail can be found within the project H2S Philosophy, document no 1-CF0000- 40- PHL-0003.

ADNOC HSE standard, HSE-OS-ST21 identifies zone classification for hydrogen sulphide areas to ensure that safety measures taken provide a level of safety such that the risk level is acceptable to ALARP.

The below classification represents a mandatory minimum requirement. Areas may be classified as Red, Amber or Yellow Zones even when they are technically a less hazardous zone to simplify the application of controls and the usage of Personal Protective Equipment (PPE).

Red Zone

A Red Zone is considered to exist if there is a significant risk of hydrogen sulphide release which could be rapidly lethal. It is considered the limit at which personnel carrying emergency escape masks will have no time to don the mask before being overcome. Red Zone is in principle part of the Amber Zone where the toxic risk lies in High Risk region as per ADNOC Risk Matrix.

DOCUMENT CLASS – 1 Page 52 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Therefore, theoretical Red Zone is identified as the regions:

• Where the toxic risk (Toxic - LSIR) is greater than or equal to 1E-03 per year.

• Locations such as confined spaces, valve pits with high H2S containing

equipment, etc. where free movement is highly restricted.

Note that isolation and de-pressuring of the toxic gas inventory could remove the Red Zone (as defined above) and this may be a prerequisite for inspection, maintenance or other operations where entry wearing Breathing Apparatus is impractical.

Amber Zone

An Amber Zone is considered to exist outside the Red Zone where there is a tolerable risk of H2S release which could be rapidly lethal. In this zone, personnel carrying an EEBA or keeping it at hand’s reach are considered to have time to don the mask before being overcome.

Theoretical Amber Zone is identified as the regions where:

• The toxic risk (toxic LSIR) is greater than or equal to 1E-04 per year and;

• Toxic end point of 700 ppm from reasonably worst-case scenarios for each leak sources for a reasonably worse case representative release size of 25mm.

• Locations which contain sour gas (1000 ppm) containing equipment in very high congestions / obstruction regions (typically Volume Blockage Ratio (VBR) greater than 50% or typical highly congested offshore module) and Air Changes Rate (ACR) of 12 can’t be maintained for 95% or more and free movement of personnel and escape / evacuation is restricted. Typical examples are highly congested offshore processing platforms.

Yellow Zone

A Yellow Zone is considered to exist outside Amber Zone if there is a possibility of H2S release which could be lethal if present for prolonged period. In this zone, personnel are considered to have time to reach strategic locations of EEBA to don the mask before being overcome.

Theoretical Yellow Zone is identified as the regions where:

• The toxic risk (toxic LSIR) is greater than or equal to 1E-05 per year; and

• Toxic end point of 100 ppm for reasonably worst-case scenarios for each leak sources at a distance more than 2m from reasonably worst-case scenarios for each leak sources for a reasonably worse case representative release size of 25mm.

During the detail design, the following philosophy shall be demonstrated, when managing the zone classification and its impact to the design:

• Elimination of Red Zones as far as reasonably practicable.

• Elimination / Reduction of personnel exposure to Red Zones as far as

reasonably practicable.

• Reduction in the size of Red and Amber Zones.

DOCUMENT CLASS – 1 Page 53 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Elimination of overlap of Red and Amber Zones in cases where maintenance

is required on one unit, when the other unit is operational.

• Limiting the size of Yellow Zones within the facility boundary.

In addition to the above referred zones, the following emergency zones shall also be evaluated and considered in design.

Emergency Planning Zone (EPZ) corresponds to the extent of H2S and SO2 gas cloud corresponding to AEGL-3 (10 min) i.e. 76 ppm for H2S and 30 ppm for SO2 from reasonably worst-case representative scenarios, which is from a 25mm release.

The following requirements shall be complied in the EPZ:

• Only Operations and Simultaneous Operations groups are allowed to work in

this zone.

• Temporary offices, workshops may be located outside EPZ.

• No public areas, public roads/highways, environmental sensitive areas, farms, accommodations, canteens/restaurants are permitted. If they exist within EPZ they shall be evacuated.

• SIMOP’s review shall be conducted between the other workgroups working

within the EPZ to define the work restriction and roles/ responsibilities.

• Personnel who are present in this zone shall be H2S trained and certified.

Emergency Awareness Zone (EAZ) corresponds to the extent of H2S and SO2 gas cloud corresponding to 10 ppm for H2S and 2 ppm for SO2 from reasonably worst- case representative scenarios, which is from a 25mm release.

Members of public shall be located beyond EAZ and Offsite Emergency Plan shall be rolled out prior to commissioning. Accommodation and canteens/ restaurants shall be located outside the EAZ. If not feasible, strict mitigation measures with regard to personnel protection and evacuation shall be implemented.

In addition to the requirements stated in HSE-OS-ST21, the following shall be considered in design of facilities in RED and AMBER zone.

• Stairways in Red Zones shall be minimum clear width 1.5m.

• Use of Ladders shall not be permitted in Red Zones.

• Platforms in Red Zones shall provide minimum clear access width 1.2m.

• Manways in Red Zones shall be amended as follows:

➢ Process Vessels in Red Zones above 1500mm ID with dirty service shall

have 30” manway size;

➢ Process Vessels in Red Zones Less than or equal to 1500mm ID with

dirty service shall have 24” manway size

• Barrier fluid reservoirs in Red Zones shall have minimum 50 litres capacity.

• A barrier fluid filling system shall be provided for pumps in Red Zones.

DOCUMENT CLASS – 1 Page 54 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

• Sampling points in Red Zones shall be located at grade.

• Closed drain system shall be buried instead of routing through trenches to

eliminate H2S settlement except for sulphur drain.

• The carrier gases for the GCs are not monitored- PT to be installed to the cylinder rack and alarm sent back to DCS, this will save unnecessary man visits to the red zone.

• The access way for the shelter/cabinet cylinder storage should be low enough that a trolley can be pulled up easily-current concrete plinth is very high causing difficulties in moving and storing cylinders.

• Shelters / Cabinets windows shall have suitable UV film to protect the displays

from direct sunlight.

• Air con units condenser and piping etc. should have increased protection

with necessary coating against H2S, SO2 vapours and “acid rain”.

• Breathing air network for the complete red zone with accessible connection

points, hooked up BA sets including platforms and stair ways etc.,

• Where local chemical skids are installed in the Red Zone, the filling point shall be located outside the Red Zone with provisions for hook-up with portable transfer pump.

DOCUMENT CLASS – 1 Page 55 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

APPENDIX-1 LAYOUT SEPARATION DISTANCES AS PER AGES-GL-03-001

(NO OF PAGES: 21)

DOCUMENT CLASS – 1 Page 56 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Appendix A. SEPARATION DISTANCES

A.1.

Block Spacing (Off-site)

The following separation distance tables are given for use in the early stages of a project.

The first set of tables deals with the layout of larger components called ‘blocks’. The second set of tables deals with ‘equipment’ layout.

Separation distances aim to ensure that the risk of escalation from fire and/or explosion event(s) on an adjacent area are tolerable, for most common processes. The numbers are based on typical separation distances from past experience and will need to be validated by Fire & Explosion assessments based on project specific process conditions and estimated hazard ranges.

Note that facility layout for plant with toxic hazards will use the principles in this standard and risk management (often by QRA), but not by separation distance Tables.

Key points to note:

Any deviation from the distances in Tables 1 to Table 8 in this Appendix and not already covered by Re-FEED Approved deviations (see TENE-HGDP-59-DCA- 0033_B - Offshore – Separation Distances in Drilling Centres, GOP and CLQ) shall be justified using Table 7-7 of AGES-GL-03-001, that shall be completed to justify and document the deviation. Such deviation shall be submitted for COMPANY review and approval by COMPANY Technical Authority in line and on the same principles of the Re-FEED Documentation.

All distances used from the Tables in this Appendix shall be validated using FERA.

The distances proposed in this Appendix are not intended to address Toxic risk, which shall be addressed through specific study and risk assessment tools such as QRA as well as HSE-OS-ST21 Management of H2S.

The distances proposed in this Appendix are minimum starting points and may be increased if required, for example, due to operational or construction reasons.

DOCUMENT CLASS – 1 Page 57 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

A.1.1. Table 1: Block Separation Distances

Table 1: Block Separation Distances (m)

e g a r o t S d e t a r e g i r f e R

s

l l

a w k n a t e g a r o t s M T A

s g n d

i

l i

i

u B d e p u c c O

) 2 1

) 7 m o o R

l

o r t n o C

s a e r a

s e i t i l i t u / s t n a p

l

s s e c o r P

l

s t c u d o r p e b a m m a l f g n

i l

d n a h

g n

i l

d n a h t o n s a e r a

s e i t i l i t

U

s t c u d o r p e b a m m a l f

l

) 2 1

n o i t a t s b u S

l

l

a c i r t c e E n a M

i

I

P A

/ I

P C

Rev

03

m r a f

k n a t n

i

s p m u P

r e f s n a r T

l

d r a Y s a i r e t a M

k c a r e p P

i

/

i

y a w e p P n a M

i

s r e w o T g n

i l

o o C

i

s y a B g n d a o L G P L

y r a d n u o B y t r e p o r P

s p m u P e r i F

d a o R

l

t n a P d e t c i r t s e R

d a o R

l

t n a P n a M

i

Refrigerated Flammable Storage

ATM storage tanks >38m3 without BOILOVER Potential

Occupied Buildings

Control Room 7) 12)

Process plants/utilities areas handling flammable products

Utilities areas not handling flammable products

Main Electrical Substation 12)

50

50

100 9)

100 9)

100 9)

100 9)

100

100

60

100

60

50

30

30

45

100

30

15

60

75

100

60

90

15

100

15

15

60

100

60

15

30

100 9)

100 9)

5

NA

150

30

NA

100 NA

100

30

15

150

30

30

10

15

100

75

NA

x

75

30

30

15

NA

30

30

30

75

30

5

30 NA

100

100 150

75

50/25 5)

50/25 5)

60

15

100

50/25 5)

15

30

75

15

15

60

100

60

60

30

30

50/25 5)

15

30

15

30

30

15

15

75

NA NA

30

30

100

60

NA

30

60

30

x

15

NA

60

30

60

60

30

15

15

30

DOCUMENT CLASS – 1 Page 58 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Table 1: Block Separation Distances (m)

e g a r o t S d e t a r e g i r f e R

s

l l

a w k n a t e g a r o t s M T A

s g n d

i

l i

i

u B d e p u c c O

) 2 1

) 7 m o o R

l

o r t n o C

s a e r a

s e i t i l i t u / s t n a p

l

s s e c o r P

l

s t c u d o r p e b a m m a l f g n

i l

d n a h

g n

i l

d n a h

t o n s a e r a

s e i t i l i t

U

s t c u d o r p e b a m m a l f

l

) 2 1

n o i t a t s b u S

l

l

a c i r t c e E n a M

i

I

P A

/ I

P C

Rev

03

m r a f

k n a t

n

i

s p m u P

r e f s n a r T

l

d r a Y s a i r e t a M

k c a r e p P

i

/

i

y a w e p P n a M

i

s r e w o T g n

i l

o o C

i

s y a B g n d a o L G P L

y r a d n u o B y t r e p o r P

s p m u P e r i F

d a o R

l

t n a P d e t c i r t s e R

d a o R

l

t n a P n a M

i

CPI/API

Materials Yard

Transfer Pumps in tank farm

Main Pipeway / Piperack

Cooling Towers

LPG Loading Bays (6)

Main Plant Road

Restricted Plant Road

Property Boundary

Fire Pumps

60

15

100

15

15

15

15

x

100

15

15

15

45

15

7.5

60

100

50

100 NA

NA

100

30

NA

100

x

10

15

30

100 NA NA NA NA

30

15

100

30

50/25 5)

30

60

15

10

x

NA

7.5

50

15

7.5

60

100

30

15

30

30

15

15

30

15

15

NA

x

30

15

3

45

60

15

30

100

100 150

75

30

15

60

60

30

30

15

30

3

30

10

30

30

75

15

15

60

15

75

NA

60

15

30

60

30

45

100

15

NA

30

50

15

NA

15

7.5 NA

7.5

3

3

30

15

60

NA

60

30

30

60

15

3

3

30

15

30

15

7.5

7.5

30

7.5

15

30

45

15

15

60

100

7.5

15

x

NA

15

3

3

15

NA

x

5

5

x

15

10

100

100

15

NA

100

30

30

100 NA

100

15

15

100 3

15

10

x

DOCUMENT CLASS – 1 Page 59 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Notes

1 60 m can be used as an initial estimate for sterile area in the absence of any thermal radiation calculations.

2 At the boundary of the sterile area the heat radiation level at maximum emergency relief rate shall be 6.3 kW/m2 maximum (excluding the effect of solar

radiation).

3 The property limit/Plant fence shall be minimum of 90m from flare and at Plant fence the heat radiation level at maximum emergency relief rate shall be

3.15 kW/m2 maximum (excluding the effect of solar radiation).

4 During flaring events that may occur during normal operations (including start up and shut down but excluding emergency and upset events), the heat

radiation (excluding the effect of solar radiation) shall not exceed 1.5 KW/m2 at the boundary of the sterile area

5 50 m for pressurised liquids – 25 m for gases

6 At least 45m from other types of loading racks

7 For reinforced building

8 60 m from process equipment in isolated areas (i.e. not part of a congested process area) that present a significant risk such as pumps, pressure vessels, relief valves to atmosphere, flares, process vents, and low pressure storage (including their associated loading and unloading racks) that could, during an unexpected operational upset, release flammable or toxic products

9 60 m from atmospheric storage tanks having a tank sidewall greater than 5 m in height and containing lighter hydrocarbons (high volatile) and

condensates. 30 m from atmospheric storage tanks contain other (less volatile) flammables

10 Spacing of atmospheric storage tanks inside diked walls containing class 1, 2 and 3 petroleum products and unclassified materials shall be in accordance

with the Tank table

11 Loading areas shall be outside plant fence (drums and GRG storage not considered under this point).

12 Control building and Electrical Substation final position/design shall be confirmed by FSA/QRA Studies.

DOCUMENT CLASS – 1 Page 60 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

A.1.1. Table 2: Tank -Tank Spacing Chart

Table 2: TANK - TANK SPACING CHART Distances are a factor of Tank Diameter of biggest tank (tank edge to tank edge)

Floating & Cone Roof Tanks <3000 Barrels

Floating & Cone Roof Tanks 3000 to 10,000 Barrels

Floating Roof Tanks 10,000 to 300,000 Barrels

Floating Roof Tanks > 300,000 Barrels

Refrigerated Dome Roof Storage Tanks

Pressure Storage Vessels (Spheres, Drums, Bullets)

Cone Roof Tanks 10,000 to 300,000 Barrels (Class II, III)

Cone Roof Tanks 10,000 to 150,000 Barrels (Class I Inerted)

Floating & Cone Roof Tanks <3000 Barrels

Floating & Cone Roof Tanks 3000 To 10,000 Barrels

Floating Roof Tanks 10,000 To 300,000 Barrels

Floating Roof Tanks >300,000 Barrels

Cone Roof Tanks 10,000 To 300,000 Barrels (Class Ii, Iii)

Cone Roof Tanks 10,000 To 150,000 Barrels (Class I Inerted)

Pressure Storage Vessels (Spheres, Drums, Bullets)

Refrigerated Dome Roof Storage Tanks

Tanks with Boilover potential → Site boundary

0.5

0.5

1

1

0.5

1

1.5

2

4

0.5

1

1

0.5

1

1.5

2

1

1

1

1

1.5

2

1

1

1

2

2

Note 1: LPG to be stored in a separate Fire Zone to other types of storage.

0.5

1

1.5

2

1

1.5

2

1

1

1

DOCUMENT CLASS – 1 Page 61 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

A.1.2. Table 3: Tank & Flare Spacing Chart

Table 3: TANK & Flare SPACING CHART Distances are in Metres

Atmospheric or Low Pressure (<1 barg) Storage ⇐38m3 WITHOUT BOILOVER potential Atmospheric or Low Pressure (<1 barg) Storage >38m3 WITHOUT BOILOVER potential Refrigerated Flammable storage Pressurised Storage (including

5 tonnes LPG in any group of LPG Bullets) (1) (2) (3) Atmospheric storage with Boilover potential

Process Units Blocks

Utility Units Blocks

Main Control Room

Unit Control Room or Instrument House

Main Electrical Substation or Motor Control Centre

Unit Electrical Substation or Motor Control Centre

Fire Station or Medical or Emergency centre

Onsite Populated Buildings

Property Line

Public Right of Way

Offsite Populated Buildings

8

8

60

15

60

15

60

60

8

15

60

100

60

75

75

90

75

100

75

30

30

75

100

60

100

100

100

100

75

75

75

75

75

75

100

60

150

150

150

150

100

100

150

150

100

60

75

100

100

100

100

100

150

150

150

150

150

150

150

150

Elevated Standalone Flare (4)

100

100

150

100

100

100

Notes

1 Distance is for above ground, unmounded LPG Bullets

2 LPG spheres are not recommended and require a specific Risk Assessment.

3 Buried LPG bullets can follow Figure 4.4A

4 Provisional distance only for concept. Definitive design requires Flare modelling.

DOCUMENT CLASS – 1 Page 62 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

A.1.3. Table 4: Building Block Spacing Chart

Table 4: Building Block SPACING CHART Distances are in Metres

Main Electrical Substation or Motor Control Centre

Main Control Room

Fire Station or Medical or Emergency centre

Onsite Populated Buildings

Property Line

Process Units Blocks

Utility Units Blocks (including non- flammable Process)

60

75

150

150

60

30

30

30

30

30

Main Pipeway / Piperack

Main Internal Roads

Secondary Internal Roads

Property Line

Public Right of Way

Offsite Populations

30

30

30

30

30

30

30

30

30

15

15

5

30

30

5

15

30

10

10

X

15

30

15

15

15

30

15

15

NA

NA

DOCUMENT CLASS – 1 Page 63 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

A.1.4. Table 5: Miscellaneous Equipment Spacing Chart

Table 5: Miscellaneous equipment SPACING CHART Distances are in Metres From

To

Waste Yard

Process Block

Railcar loading (Sulphur loading facilities)

Railcar loading (Sulphur loading facilities)

Railcar loading (Sulphur loading facilities)

Control room

Granulators

last transfer tower / surge hopper

Logistics Areas

Any equipment containing flammables or ignition source

Emergency Diesel Generators

Any equipment containing flammables

Fire Water Pumps

Any equipment containing flammables

Fire Water Pumps

Process Units at CDS’s, RDS’s & RMS’s

ESD/Unit Block Valves

Any equipment containing flammables

Deluge valve skids

Equipment/Package being protected by that deluge

Distance (m)

RA (1)

400

300

100

15

100

100

150

15

15

DOCUMENT CLASS – 1 Page 64 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Table 5: Miscellaneous equipment SPACING CHART Distances are in Metres

Fire Water monitors/ hydrants

Any equipment containing flammables

Fire Water monitors/ hydrants

Road edge

15

3

Typical minimum separation distances - based on reason (default if no specific guidance given)

Distance (m)

Operation, maintenance, egress from equipment/building

Separation from flammables processing to ignition source

Separation from flammable vapour cloud source to ignition source

Separation from hazardous inventory storage to process plant

Separation of critical safety equipment from flammable process plant or storage

Separation of personnel (manned buildings) from flammable process plant or storage

5

15

30

60

60

60

DOCUMENT CLASS – 1 Page 65 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Notes:

1 Risk Assessment (RA) required for specific case to consider nature of waste and the potential impact on (/ from) surrounding facilities’.

A.2 Equipment Spacing (On-site)

A.2.1. Table 6: Equipment Spacing Chart

Table 6: EQUIPMENT SPACING

All units are (m)

s u o d r a z a H

n o N e g a r o t S

s u o d r a z a H e g a r o t S

.

m A

t

.

m A

t

Atm. Storage Hazardous (10)

Atm. Storage Non- Flammable (10)

(9)

(9)

(9)

(9)

p m u P e g r a L

) 8 (

e s u o H

90

45

s a G

i

/ s e n g n E n o i t s u b m o C

l

a n r e t n I

s r o t a r e n e G m a e t S

s p m u P d r a z a H e t a d e m r e t n I

i

s p m u P d r a z a H h g H

i

s p m u P d r a z a H e t a r e d o M

s r e s n e d n o C d e o o C

l

r i

A

s r e g n a h c x E

t a e H

s r o s s e r p m o c

r i a t n e m u r t s n I

s m u r D

, r o t a r a p e S

, s n m u o C

l

i

d k s g n i r e t e M

s r o s s e r p m o C

s p a r T g P

i

s k c a R e p P

i

s r o t c a e R

D S E

s r e

l i

o B d n a

s r e t a e H d e r i F

e r t n e C

l

o r t n o C

r o t o M

m o o R

r e s y a n A

l

r o s s e r p m o C

) 8 (

s g n d

i

l i

u B

90

90

90

90

75

90 t

90

90

90

90

90

90

90

90

90

90

90

15

30

30

15 15

45 30

30

45 30

15

45

45

(1)

(1)

45

15

45

45

15

10

Large Pump House

90

45

25

25

10

60

15

30

8

45

25

15

30

15

10

Compressor Buildings

Analyser Room

90

30

90 15

25

10

25

15

15

x

60

60

30

45

15 15

25

15

15

x

15 15

15

15

30

15

15

15

10

10

8

8

10

8

15

15

30

15

15

15

15

15

15

30

15

3-10 (2) 3-10 (2)

15

10

15 (3) 15

DOCUMENT CLASS – 1 Page 66 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Table 6: EQUIPMENT SPACING

All units are (m)

Motor Control Centre (4) Fired Heaters and Boilers

Steam Generators

Internal Combustion Engines / Gas turbines Metering Skid

Compressors

Pig Traps

High Hazard Pumps Intermediate Hazard Pumps

s u o d r a z a H

n o N e g a r o t S

s u o d r a z a H e g a r o t S

.

m A

t

.

m A

t

e s u o H p m u P e g r a L

) 8 (

s g n d

i

l i

u B

r o s s e r p m o C

) 8 (

m o o R

r e s y a n A

l

90

15

60

60

60

s r e

l i

o B d n a

s r e t a e H d e r i F

s r o t a r e n e G m a e t S

60 30

e r t n e C

l

o r t n o C

r o t o M

x

90

45

15

30

15

60

8

15

s a G

i

/ s e n g n E n o i t s u b m o C

l

a n r e t n I

s

60

ur

8

s p m u P d r a z a H e t a d e m r e t n I

i

s p m u P d r a z a H h g H

i

s p m u P d r a z a H e t a r e d o M

s r e s n e d n o C d e o o C

l

r i

A

s r e g n a h c x E

t a e H

s r o s s e r p m o c

r i a t n e m u r t s n I

s m u r D

, r o t a r a p e S

, s n m u o C

l

i

d k s g n i r e t e M

s r o s s e r p m o C

s p a r T g P

i

s k c a R e p P

i

s r o t c a e R

D S E

60 60

60

60

60

60

60

60

30

60

60

30

60

45 45

15

30

30

15

30

30

15

30

30

15

15

75

30

30

45

15

30

15

x

15

bi

30 45

15

30

30

15 (1)

30

30

15

30

15

15

15

90

30

8

25

15

90

45

45

60

8

15

3

90

30

25

60

45

30

30

45

n

30

15 (5)

15

15

15

15

30

30

15

15

15

e

15

(5)

x

50

15

45

45

15

15

15

15

15

30

50

8

15

(1)

(1)

(1)

8

15

15

15

30

3-15 (2)

15

15 3-10 (2)

15

15

90

15

15

15

15

60

15 15

15

15 15

x

15

15

15

15

15

15

30

15

x

(1)

90

45

30

30

15

60

30 30

15

45

90

45

15

15

15

60

30 30

15

45

15

15

(1)

(1)

(1)

(1)

(1)

(1)

(1)

(1)

15

15

(1)

(1)

15

15

(1)

(1)

30

30

3

3

15

15

DOCUMENT CLASS – 1 Page 67 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Table 6: EQUIPMENT SPACING

All units are (m)

Moderate Hazard Pumps

Air Cooled Condensers

Heat Exchangers Instrument air/non- flammable compressors (6)

Columns, Separator, Drums Reactors

Pipe Racks

s u o d r a z a H

n o N e g a r o t S

s u o d r a z a H e g a r o t S

.

m A

t

.

m A

t

90

90

(1)

(1)

90

45

s a G

i

/ s e n g n E n o i t s u b m o C

l

a n r e t n I

s r o t a r e n e G m a e t S

i

d k s g n i r e t e M

s r o s s e r p m o C

s r e

l i

o B d n a

s r e t a e H d e r i F

e r t n e C

l

o r t n o C

r o t o M

m o o R

r e s y a n A

l

e s u o H p m u P e g r a L

) 8 (

s g n d

i

l i

u B

r o s s e r p m o C

) 8 (

10

10

10

60

15

15 (1)

15

15

(1)

s p m u P d r a z a H e t a d e m r e t n I

i

s p m u P d r a z a H h g H

i

(1)

(1)

s p m u P d r a z a H e t a r e d o M

3

s r e s n e d n o C d e o o C

l

r i

A

5

s p a r T g P

i

15

s r o s s e r p m o c

r i a t n e m u r t s n I

s m u r D

, r o t a r a p e S

, s n m u o C

l

s r e g n a h c x E

t a e H 3

s k c a R e p P

i

s r o t c a e R

D S E

15

(1)

(1)

30

3

10

8

8

8

10 60

30 30 30

15

8

15

15

15

5

x

8

15 15

30

x

15

15

15

60

30

30

30

15

15

15

(1)

(1)

3 (1)

8

(1)

15

(1)

30

3-15 (2)

15

90

15

15

15

15

30

15

15

15

15

15

15

15

15

15

15

15

x

15

15

x

x

90

45

15

15

15

60

30

30

15

15

15

15

15

15

(1)

(1)

(1)

(1)

(1)

90 45

30

30

15 60

30 15 15

30 30

30

30

30

30

30

30 15 30

15

15

3-10 (2)

3-10 (2)

15

30

15

15

3-15 (2)

15

3-10 (2)

15

3

3

3

x

3-15 (2)

x

3-15 (2)

30 3-15 (2)

x

5

5

x

15

15

x

x

ESD/Unit Block Valves

30 10

10

15 (3)

15 60

15 15 15

15

15

x

15

15

10

15

15

x

15

15

x

DOCUMENT CLASS – 1 Page 68 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Notes:

For good operational and maintenance access and for safe egress a minimum of 3 meter should be left between lined-up equipment (piping and instrumentation installed, except as noted in the table

Areas under piperacks shall be kept clear for emergency and maintenance vehicles. Where two distances are given. The smaller refers to unit piperack and the larger to main piperacks.

These distances are applicable to ESDV valves used as zone battery limit, isolation valves and in zones in which the capacities contain flammable liquids. Minimum distance may be reduced to 7.5m with additional protection.

4. Motor control centre building shall be construct as non-hazardous pressurised building.

This spacing requirement is not applicable to the driver of a compressor but is applicable to the horizontal distance between the driver of one compressor and possible source of hydrocarbon release from another compressor. Instrument air compressor are to be located in a non-hazardous utilities area at least 15 meters away from process equipment containing hydrocarbon. An underground fire water main will be installed to ring the battery units of process units and atmospheric / pressure storage areas. Fire hydrants / monitors will be provided every 50 meters around storage areas and spaced 15 m away from process fluid hazard Spacing of atmospheric storage tanks inside diked walls containing class 1, 2 and 3 petroleum product and unclassified materials shall be in accordance with Tank tables

10. Critical isolation and ESD valves can be inside the bund area with adequate fire protection

DOCUMENT CLASS – 1 Page 69 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

A.2.2. Table 7: Outside Plant Spacing Chart

Table 7: Outside Plant Spacing Distances

s n o i t a r e p O g n

i l l i r

D e p y T

l l

A

s e n

i l

l

w o F s a G

i

s e n L w o F

l

s

l l

e W

l i

O

l i

O

l l

A

s

l l

e W s a G

s a G

t r o p x E

s e n L

i

l i

O n a M

i

r e f s n a r T

s e n

i l

k n u r T
s e n

i l

S M R & S D R

s e n

i l

Gas Wells

50 (1)

50 (1)

Oil Wells

50 (1)

50 (1)

50 (1)

Oil Flow Lines

50 (1)

50 (1)

50 (1)

1

All Gas Flow lines

50 (1)

50 (1)

50 (1)

10 (16) 10 (16)

(m)

S U O D R A Z A H

DOCUMENT CLASS – 1 Page 70 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Table 7: Outside Plant Spacing Distances

(m)

Main Oil Lines\ Export Gas lines\Trunk lines
Transfer lines

RDS & RMS (Process plants)

All Type Drilling Operations

Power cables underground

Water supply wells

Water pipelines

Fibre Optic Cable & Telephone lines

Public Establishments (Type 1) (3)

Public Establishments (Type 2) (4)

S U O D R A Z A H

N O N

Administration Buildings

Accommodations & canteens

Railways (7) N O T N G

I

I

Plant Flares (5)

I

Power Lines - Overhead (6)

s n o i t a r e p O g n

i l l i r

D e p y T

l l

A

50 (15)

s

l l

s

l l

e W

e W s a G 50 (15) 50 (15)

O

l i

s e n

i l

l

w o F s a G

i

s e n L w o F

l

l i

O 15

l l

A 15

s a G

t r o p x E

s e n L

i

l i

O n a M

i

r e f s n a r T

s e n

i l

k n u r T
s e n

i l

S M R & S D R

s e n

i l

15 (13,15,16)

150 (17)

150 (17)

150 (17)

150 (17)

150 (17)

150 (17) NA/NA

200

50 (1)

50 (1)

50 (1)

50 (1)

50 (1)

100

100

100

50

50

50

30

50

50 (1)

50 (1)

50 (1)

1

30

50

10

30

50

NA

50 (1)

50 (1)

50 (1)

10 (14) 10 (14)

10 (14)

150 (17)

150 (17)

150 (17)

150 (17)

150 (17)

Beyond EAZ

Beyond EPZ

Beyond EPZ

Beyond EAZ

Beyond EAZ

Beyond EAZ

Beyond EAZ

Beyond EAZ

Beyond EPZ

Beyond EPZ

Beyond EPZ

Beyond EPZ

Beyond EPZ

Beyond EPZ

Beyond EPZ

Beyond EPZ

Beyond EAZ

Beyond EAZ

Beyond EAZ

Beyond EAZ

Beyond EAZ

Beyond EPZ

Beyond EPZ

Beyond EAZ

Beyond EAZ

Beyond EPZ

Beyond EPZ

Beyond EAZ

200

500

200

500

200

500

200

150

200

150

200

150

200

150

150

150

150

150

150

150

150

DOCUMENT CLASS – 1 Page 71 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Notes

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

50 m distance is based on potential Fire zone from wells. The distance may be further increased based on SIMOPS, Drilling, workover, Operations/Construction requirements

All distances are based on upwind Direction and shall be reviewed based on the conditions mentioned in the other notes.

Public Establishments Type 1: Public Residential Areas, Religious Places, Schools, Farms, Hospitals with inpatient treatment facilities, industrial works/workshops having worker accommodations etc which are considered as sensitive receptors. EAZ is the Emergency Awareness Zone of distance equivalent to 10 ppm H2S Zone)

Public Establishments Type 2: Public Roads, Gas Stations, Restaurants, Industrial works/workshops not having worker accommodations, government offices, parks etc where public presence is expected for a limited time. EPZ is the Emergency Planning Zone of distance equivalent to 76 ppm H2S zone)

Plant flares include fixed or permanent flare stacks designed for the plants (for example, RDS, RMS, GRS, CDS or other Plant units). This also include mobile flare stacks/units.

33KV overhead line could be reduced to 100 m

For railways the exclusion zones shall be 200 m minimum both sides

All Wells separation distances provided in this table shall be applicable for off pad (stand-alone) wells and shall not be applicable for Well Pad. Plats, Production Clusters etc

Separation distances would not discount for ALARP Risk Reduction measures.

All distances are from the skid boundary not to be considered from unit/ Equipment.

The distances given are the minimum recommended safe distance. Initial leverage for the design, however FSA shall determine actual requirements.

Distance between new and existing MOL lines 15 as per corridoring philosophy. However for other buried pipelines (trunklines/pipelines) this can be reduced to 10m with the requirement of note 13 below

Adding a new buried pipeline adjacent /parallel to an existing buried pipeline, separation distance shall be 10 m. However minimum space for constructability and requirements of construction/maintenance right of way has to be ensured (refer to clause no. II.4.3.2 of Standard Specification)

Applicable for laying new Fibre Optic Cable (FOC) next to existing MOL/Trunk line/Transfer line. However, FOC is laid simultaneously along with a buried pipeline could be laid in the same trench as per standard agreed by project team

The above safety distances exclude future expansion requirements of flowline/pipeline/MOL Corridors. Adequate future expansion margins shall be considered. This distance is required for drilling rig/equipment manoeuvrability

When multiple buried pipelines are installed together, then these can be installed in common trench with minimum pipe edge to edge inter distance (refer to clause no. II.4.3.2 of Standard Specification) to facilitate maintenance activity

17

This distance is for planned expansion of the process facilities

DOCUMENT CLASS – 1 Page 72 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

A.2.3. Table 8: Equipment Spacing Inside Wellhead Area

r e t l e h S g n

i l

o o C e v s s a P

i

i

c d o h t a C

( d e b

d n u o r G

) n o i t c e t o r P

t i

P n r u B

P C H W

Table 8: SEPARATION DISTANCES

Equipment Spacing inside Wellheads Area

(m)

Wellhead

d a e h

l l

e W

50 (3)

Oil & Gas Well Head Piping

ESD Valve

Chemical Injection Skid

Isolation valves/HIPPS

Choke valves

3 (1)

50 (3)

50 (3)

3 (3)

i

d k S n o i t c e n I

j

l

i

a c m e h C

l

I

S P P H / s e v a v n o i t a o s I

l

t n e V n o i t a z i r u s s e r p e D

l

s e v a v e k o h C

l

e n a P

l

r a o S

i

i

g n p P d a e H

l l

e W s a G &

l i

O

l

e v a V D S E

7.5 (5)

7.5 (5)

7.5 (5)

7.5 (5)

Depressurization Vent

RA

RA

RA

RA

RA

RA

Solar Panel

Passive Cooling Shelter

WHCP

Ground bed (Cathodic Protection)

Burn Pit

50 (3)

50 (3)

50 (3)

5

5

15

5

5

5

5

15

5

5

5

5

15

5

5

RA

RA

RA

100

NA

NA

NA

NA

NA

120 / RA

120 / RA

120 / RA

120 / RA

120 / RA

120 / RA

120 / RA

NA (7)

120 / RA

NA

NA

120 / RA

120 / RA

120 / RA

DOCUMENT CLASS – 1 Page 73 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Notes

1 Minimum 3m within wellhead area or inside valve compound

2

3

This table is applicable for off pad well only and not applicable for well pads or Plats or Production clusters

50 m distance is based on potential Fire zone from wells. Distance may be increased based on SIMOPS, drilling, workover, operations/construction requirements.

4 All the distances provided in the table shall be measured from edge of the Equipment / Curbing.

5

7.5 m distance is based on 37.5 kW/m2 radiation from Chemical Injection. The distance may be further reduced based on the hazardous area classification and radiation control measures.

6 All distances in the table are fixed considering safety requirements such as fire case, area

classification, etc. Further spacing between the equipment / facilities shall be considered based on drilling, workover, accessibility, constructability, maintainability and operability

7 Solar panel for CP ground bed shall be installed inside same compound adjacent to each other.

DOCUMENT CLASS – 1 Page 74 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

APPENDIX-2 ADNOC RISK MATRIX AND CRITERIA

(NO OF PAGES: 4)

DOCUMENT CLASS – 1 Page 75 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

ADNOC CORPORATE RISK MATRIX

DOCUMENT CLASS – 1 Page 76 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

DOCUMENT CLASS – 1 Page 77 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

ADNOC QUANTITATIVE RISK CRITERIA FOR INDIVIDUAL RISK TO WORKER AND PUBLIC

ONSITE AND OFFSITE SOCIETAL RISK CRITERIA

DOCUMENT CLASS – 1 Page 78 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

DOCUMENT CLASS – 1 Page 79 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

APPENDIX-3 ADNOC HSE STANDARDS

(NO OF PAGES: 3)

DOCUMENT CLASS – 1 Page 80 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

Sl. No.

Document No.

Document Title

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

HSE-GA-ST01

HSE Governance Framework

HSE-GA-ST02

Integrated Operations Management System Manual

HSE-GA-ST03

Critical HSE Roles & Competence

HSE-GA-ST04

Incident Notification, Reporting & Investigation

HSE-GA-ST05

Contractor HSE Management

HSE-GA-ST06

Project HSE Plans

HSE-GA-ST07

HSE Design Philosophy

HSE-GA-ST08

HSE Performance Monitoring & Reporting

HSE-GA-ST09

HSE Audit and Assurance

HSE-GA-ST11

Life Saving Rules

HSE-GA-ST12

HSE Recognition and Accountability Framework

HSE-EN-ST01

Environmental Impact Assessment

HSE-EN-ST02

Pollution Prevention and Control

HSE-EN-ST03

Energy Management Systems

HSE-EN-ST04

Waste Management

HSE-EN-ST05

Environmental Performance Monitoring

HSE-EN-ST06

Biodiversity Protection

HSE-EN-ST07

Air Dispersion Modeling

HSE-OH-ST01

Occupational Health Framework

HSE-OH-ST02

Occupational Health Hazards

HSE-OH-ST03

Occupational (OHRM)

Health Risk Management

HSE-OH-ST04

Case Management & Rehabilitation

HSE-OH-ST05

Health Screening & Surveillance

HSE-OH-ST06

Food and Water Safety

HSE-OH-ST07

Contractor Welfare Management

HSE-OH-ST08

Physical Hazards Standard

HSE-OH-ST09

Chemical Hazards Standard

HSE-OH-ST10

Biological Hazards Standard

HSE-OH-ST11

Ergonomics Hazards Standard

HSE-OH-ST12

Indoor Air Quality Standard

HSE-OH-ST13

Psychosocial Hazards Standard

HSE-OS-ST01

Work Management System (WMS) Framework

HSE-OS-ST02

Permit to Work

DOCUMENT CLASS – 1 Page 81 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

HSE-OS-ST03

Job Safety Analysis (JSA)

HSE-OS-ST04

Energy Isolation

HSE-OS-ST05

Defeat Management

HSE-OS-ST06

Simultaneous Operations (SIMOPS)

HSE-OS-ST07

Compressed Gas Cylinders

HSE-OS-ST08

Confined Space

HSE-OS-ST09

Electrical Safety

HSE-OS-ST10

High Pressure Water Jetting

HSE-OS-ST11

HSE-OS-ST12

Control of Equipment in Classified Hazardous Areas Explosives

HSE-OS-ST13

Hazardous Substances

HSE-OS-ST14

Cutting, Welding & Allied Processes

HSE-OS-ST15

HSE-OS-ST16

Excavation

Scaffolding

HSE-OS-ST17

Manual Handling

HSE-OS-ST18

Abrasive Blasting & Spray Painting

HSE-OS-ST19

Lifting Operations

HSE-OS-ST20

Personal Protective Equipment

HSE-OS-ST21

Management of Hydrogen Sulphide

HSE-OS-ST22

Working at Height

HSE-OS-ST23

Diving Operations Safety

HSE-OS-ST24

Marine Operations Safety

HSE-OS-ST25

Road Transport Operations Safety

HSE-OS-ST26

Air Transport Operations Safety

HSE-OS-ST27

Hazard Communication

HSE-OS-ST28

Office Safety

HSE-OS-ST29

HSECES Management

HSE-OS-ST30

Management of Technical Changes

HSE-OS-ST31

Management of Downgraded Situations (DGS)

HSE-RM-ST01

HSE Risk Management System

HSE-RM-ST02

HSE Impact Assessment (HSEIA)

HSE-RM-ST03

HAZID/ENVID/OHID

HSE-RM-ST04

Hazard & Operability Study (HAZOP)

HSE-RM-ST05

LOPA and SIL Assessment

HSE-RM-ST06

Control of Major Accident Hazards (COMAH)

DOCUMENT CLASS – 1 Page 82 of 83

Uncontrolled When Printed

COMPANY PROJECT No: 4700021770 CONTRACTOR PROJECT No: 67-00106 COMPANY DOCUMENT No. 1-CF0000-40-PHL-0002-00

HAIL & GHASHA DEVELOPMENT PROJECT PACKAGE 1 – OFFSHORE FACILITIES

HSE DESIGN PHILOSOPHY

Rev

03

69

HSE-RM-ST07

Escape Evacuation & Rescue Assessment (EERA)

70

71

72

73

74

75

76

77

78

79

80

HSE-RM-ST08

Emergency System Survivability Assessment (ESSA)

HSE-RM-ST09

Fire Safety Assessment (FERA)

HSE-RM-ST10

Quantitative Risk Assessment (QRA)

HSE-RM-ST11

Project HSE Review (PHSER)

HSE-RM-ST12

Pre-Startup Safety Review (PSSR)

HSE-RM-ST13

Inherently Safer Design

HSE-RM-ST14

CFD Dispersion & Explosion Modelling

HSE-CE-ST01

Emergency Response and Crisis Management

HSE-CE-ST02

Oil Spill Response

HSE-CE-ST03

Fire and Rescue Operations

HSE-CE-ST05

Emergency Response Plan

DOCUMENT CLASS – 1 Page 83 of 83

Uncontrolled When Printed

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

Pos No.

Page number

COMPANY Comments Description

Document Class mismatch with EDDR, Document Class to be updated in EDDR Not legible!

COMPANY Originator NAME

CONTRACTOR Confirmation / Explanation

ACTION BY CONTRACTOR

Mr Sajan George

Class 1 is confirmed according to the last EDDR

V. Cavaliere

Mr Taqveem Panzoo

This figure is according to the documents Template which has been approved and agreeed with COMPANY, therefore it will not be changed.

1

2

3

4

01

07

08

08

To reduce the probability of an accidental event and loss of primary containment occurring. To minimize the damage caused to plant, equipment and structures, or pollution to the environment, should an accidental event occur;

Mr Saravanan Kalimuthu

Comment implemented

design of the projects to achieve its HSE objectives;

a sustainable basis; and

between engineering disciplines. and to ensure that a project is designed and constructed in compliance with UAE Federal and Local Laws & Regulations, and ADNOC Standards & HSE Regulations;

Mr Saravanan Kalimuthu

Comment implemented

V. Cavaliere

V. Cavaliere

V. Cavaliere

File: MacroCommentSheet_EPC 4

Page 1/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

Pos No.

Page number

COMPANY Comments Description

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

COMPANY Originator NAME

Mr Saravanan Kalimuthu

Mr Taqveem Panzoo

5

6

7

8

9

10

11

08

08

12

12

12

12

14

To control the environmental (including social) impacts of the project on wildlife, marine life habitat, air and groundwater quality based on the prevention of pollution or, where this is not possible or practical, the minimization of pollution using Best Available Technology (BAT); Include terms from clause 1.1.

Emiri Decree No. (18) of 2001, Declaring Marawah as a Protected Marine Area Federal Authority for Nuclear Regulations (FANR) Regulations ( FANR-REG-09, 10, 13, 23,24, 26) United Arab Emirates Cabinet … (cid:143)Regulation for the Protection of the Marine Environment(cid:144), 2001 Law No. 5 of 2016 concerning the Regulation of Groundwater in the Emirate of Abu Dhabi Contractor shall include a table and provide ADNOC HSEMS Documents list

Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu

CONTRACTOR Confirmation / Explanation

ACTION BY CONTRACTOR

V. Cavaliere

Comment implemented

Comment implemented

Comment implemented

Comment implemented

Comment implemented

Comment implemented ADNOC HSE standards already listed in Appendix 3.

V. Cavaliere

V. Cavaliere

V. Cavaliere

V. Cavaliere

V. Cavaliere

A. Massoni

File: MacroCommentSheet_EPC 4

Page 2/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

Pos No.

Page number

COMPANY Comments Description

Social engagement Plan

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

COMPANY Originator NAME

Mr Moussa Sadji

12

13

14

15

21

23

34

34

Maintain minimum 10 m between Process units and main piperack

Mr Moussa Sadji

All applicable drain systems should be designed in accordance to ISO13702.

Mr Saravanan Kalimuthu

Specify the drain systems

Mr Saravanan Kalimuthu

CONTRACTOR Confirmation / Explanation

There is no document expected in the name of Social Engagement Plan. Social engagement requirements are to be covered as part of External Stakeholder Engagement Plan/SMP. ESEP is a mandatory document as part of HSEIA dossier for regulatory approval in EPC phase, therefore only this document is added in this list. Noted. A bullet point has been added at the end of clause 8.1.2 clarifying the minimum required distance (i.e. 9.1m) which has been agreed to be kept between process PAU and main piperack to minimize congestion. This comment is new and was never expressed in previous revisions. However the sentence has been added.

The details on the drain systems are reported in the Drainage Design Philosophy which is referenced in this paragraph.

ACTION BY CONTRACTOR

A. Massoni

A. Massoni

A. Massoni

A. Massoni

File: MacroCommentSheet_EPC 4

Page 3/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

Pos No.

Page number

COMPANY Comments Description

COMPANY Originator NAME

CONTRACTOR Confirmation / Explanation

16

17

18

19

20

38

38

40

43

43

Contractor shall include a section for Handling and storage of Hazardous materials and describe

Mr Saravanan Kalimuthu

or Delete “(or Amphibious vehicles for Hail DC’s)”.

Mr Taqveem Panzoo Mr Moussa Sadji

Refer to section no. 6.19.3 Noise Limits of SPE AGES SP 01 013, for Workshop and include suitably

Parveen Faiz

Acoustic insulation requirements within enclosed spaces shall be specified whenever the sound pressure level (SPL) exceeds the acceptable noise exposure limits, also in plant areas where (PPE) hearing protection are necessary.

Mr Saravanan Kalimuthu

This comment is new and was never expressed in previous revisions. However an additional section has been included in the philosophy for Handling and Storage of Hazardous materials (see new clause 19) Noted and implemented Comment is correct, Amphibious Crafts is only foreseen for the future Hail DCs, whereas Hail DC in current scope (i.e. HLE) is provided with TEMPSC as secondary means of escape. The sentence will be modified to align with EER Philosophy also. This comment is new and was never expressed in previous revisions. However noise level for workshops has been added. Noted and implemented

ACTION BY CONTRACTOR

A. Massoni

A. Massoni A. Massoni

A. Massoni

A. Massoni

File: MacroCommentSheet_EPC 4

Page 4/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

Pos No.

Page number

COMPANY Comments Description

COMPANY Originator NAME

CONTRACTOR Confirmation / Explanation

21

43

22

23

46

46

Noise study report shall be prepared as part of HSEIA during detailed design considering the actual vendor data. After commissioning, noise survey should be conducted for the actual noise levels to verify and update the Noise Study report.

Mr Saravanan Kalimuthu

Comment is noted. The following exact sentence extracted from ADNOC HSE Design Philosopy standard (HSE-GA- ST07, clause 7.20.1) has been reported in the current philosophy. “Noise study report shall be prepared where required as part of HSEIA during detailed design and shall be further updated as during the operations phase, considering the actual vendor data. After commissioning, noise survey should be conducted for the actual noise levels to verify and update the Noise Study report.”

add section on NET Zero emission and water resource conservation

Mr Moussa Sadji

Minimize emission of greenhouse gases

Mr Saravanan Kalimuthu

This comment is new and was never expressed in previous revisions. This is only an high level HSE design philosophy, detailed requirements shall be addressed in the dedicated Environmental Philosophy (Doc. No. 1-CF0000-13-PHL-5560- 00)

A. Massoni

Noted and implemented

A. Massoni

ACTION BY CONTRACTOR

A. Massoni

File: MacroCommentSheet_EPC 4

Page 5/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

Pos No.

Page number

COMPANY Comments Description

COMPANY Originator NAME

CONTRACTOR Confirmation / Explanation

ACTION BY CONTRACTOR

24

25

26

27

28

46

46

46

46

46

and CFCs

Minimize occurrence of non-routine and emergency flaring / venting; and handled as per Company approved Waste Management Plan (WMP) and global warming

Contractor shall describe the Produced water management

Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu Mr Saravanan Kalimuthu

Noted and implemented

Noted and implemented

Noted and implemented

Noted and implemented

This comment is new and was never expressed in previous revisions. This is only an high level HSE design philosophy, detailed requirements shall be addressed in the dedicated Environmental Philosophy (Doc. No. 1-CF0000-13-PHL-5560- 00)

A. Massoni

A. Massoni

A. Massoni

A. Massoni

A. Massoni

File: MacroCommentSheet_EPC 4

Page 6/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

Pos No.

Page number

COMPANY Comments Description

COMPANY Originator NAME

CONTRACTOR Confirmation / Explanation

29

46

30

46

Contractor shall include a section for Energy Efficiency and describe the applied energy optimization for the Project as per HSE-EN-ST03-Energy Management System standard

Mr Saravanan Kalimuthu

This comment is new and was never expressed in previous revisions. This is only an high level HSE design philosophy, detailed requirements shall be addressed in the dedicated Environmental Philosophy (Doc. No. 1-CF0000-13-PHL-5560- 00)

Contractor shall describe the applied Emission Monitoring System (CEMS & PEMS) as per the HSE-EN-ST05- Environmental Performance Monitoring Standard

Mr Saravanan Kalimuthu

This comment is new and was never expressed in previous revisions. This is only an high level HSE design philosophy, detailed requirements shall be addressed in the dedicated Environmental Philosophy (Doc. No. 1-CF0000-13-PHL-5560- 00)

A. Massoni

ACTION BY CONTRACTOR

A. Massoni

File: MacroCommentSheet_EPC 4

Page 7/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

Pos No.

Page number

COMPANY Comments Description

COMPANY Originator NAME

CONTRACTOR Confirmation / Explanation

31

46

32

33

34

47

48

48

Contractor shall discuss about the sewage water handling & disposal

Mr Saravanan Kalimuthu

Flares shall be fitted with flare gas meters installed with online data transmission to central process control and monitoring system. There shall be two flow meters to capture the low- range flow (thermal flow meters) and full flare load (ultrasonic flow meters).

Mr Saravanan Kalimuthu

at base of the flare (10 minutes) … lethal as per Acute Exposure Guideline Levels by USEPA

Mr Moussa Sadji

Mr Saravanan Kalimuthu

This comment is new and was never expressed in previous revisions. This is only an high level HSE design philosophy, detailed requirements shall be addressed in the dedicated Environmental Philosophy (Doc. No. 1-CF0000-13-PHL-5560- 00)

This comment is new and was never expressed in previous revisions. Noted. The following sentence will be added to the philosophy: Flares shall be fitted with flare gas meters installed with online data transmission to central process control and monitoring system. There shall be flowmeter to capture low-range flow and full flare load. Noted and implemented

Noted and implemented

ACTION BY CONTRACTOR

A. Massoni

A. Massoni

A. Massoni

A. Massoni

File: MacroCommentSheet_EPC 4

Page 8/9

ABU DHABI NATIONAL OIL COMPANY (ADNOC) GHASHA CONCESSION PROJECTS

Drawing / Document Number, Title and Revision:

Doc Status Code:

Doc. No.:

1-CF0000-40-PHL-0002-00

Rev. No. :

02

Title:

HSE DESIGN PHILOSOPHY

Discipline:

40-Process Safety Engineering

Pos No.

Page number

COMPANY Comments Description

Life rafts

CODE 2-COMMENTS AS NOTED

Doc Class:

CLASS 1

COMPANY Originator NAME

Mr Moussa Sadji

35

36

49

50

Emergency Safety Showers & Eye Wash Stations; Provision of Medical Resources

Mr Saravanan Kalimuthu

Safety Showers and Eye wash have been added. First Aid Boxes are already in the list

A. Massoni

CONTRACTOR Confirmation / Explanation

This comment is new and was never expressed in previous revisions. Life raft are not currently foreseen in the facilities in the Scope of Work. Only Crew Vessel (in COMPANY scope) and TEMPSC (in COMPANY scope for the DCs and in CONTRACTOR scope for GOP) will be availablle as escape means, according to EER Philosophy.

ACTION BY CONTRACTOR

A. Massoni

File: MacroCommentSheet_EPC 4

Page 9/9

Project: Q-32855 - Saipem Hail & Ghasha Folder: Reference documents