200-20-SH-DEC-00004

NFPS Offshore Compression Complexes Project COMP2

COMPANY Contract No.: LTC/C/NFP/5128/20

CONTRACTOR Project No.: 033734

Document Title

ENVIRONMENTAL DESIGN PHILOSOPHY FOR CP6S AND CP7S COMPLEXES

COMPANY Document No.

: 200-20-SH-DEC-00004

Saipem Document No.

: 033734-B-D-30-SPM-LP-S-10016

Discipline

: HSE&Q

Document Type

: DESIGN CRITERIA

Document Category/Class

: 1

Document Classification

: INTERNAL

06-Jun-2023

Issued for Approval

Erwana Rahayu

12-Apr-2023

Issued for Review

Erwana Rahayu

07-Mar-2023

Issued for Review

Erwana Rahayu

Francis Minah / Rama K. Kotha Francis Minah / Rama K. Kotha Francis Minah / Rama K. Kotha

Luminita Oprescu

REV.

DATE

DESCRIPTION OF REVISION

PREPARED BY

CHECKED BY

APPROVED BY

Saipem S.p.A.

Company No. Rev. 200-20-SH-DEC-00004_C

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REVISION HISTORY

Revision

Date of Revision

Revision Description

08-Feb-2023

07-Mar-2023

12-Apr-2023

06-Jun-2023

Issued for Inter-Discipline Check

Issued for Review

Issued for Approval

HOLDS LIST

Hold No

Hold Description

Company Document Number

Maintain the Open Drain Caisson and Open Drain Caisson Pump

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TABLE OF CONTENTS

INTRODUCTION … 4

1.1 PROJECT OBJECTIVE … 4 1.2 PROJECT SCOPE … 4

DEFINITIONS AND ABBREVIATIONS … 6

2.1 DEFINITIONS … 6 2.2 ABBREVIATIONS … 7

REFERENCE, RULES, CODES AND STANDARDS … 11

3.1 QATARI GOVERNMENT AND REGULATORY REQUIREMENTS … 11 3.2 COMPANY DOCUMENTS … 11 3.3 PROJECT DOCUMENTS (FEED) … 12 3.4 PROJECT DOCUMENTS (DETAILED DESIGN) … 12 INTERNATIONAL CODES AND STANDARDS … 13 3.5

PURPOSE & SCOPE OF WORK … 16

4.1 PURPOSE … 16 4.2 SCOPE OF WORK … 16

GENERAL ENVIRONMENTAL PRINCIPLES… 17

ENVIRONMENT MANAGEMENT CRITERIA … 18

6.1 AIR EMISSION SOURCES … 18 6.1.1 AMBIENT AIR QUALITY … 18 6.1.2 OZONE DEPLETING SUBSTANCES (ODS) … 20 6.1.3 FLARING / VENTING … 20 6.1.4 FUGITIVE EMISSIONS … 22 6.1.5 GHG EMISSIONS … 23 6.1.6 GTG /GTC EMISSIONS … 23 6.1.7 VESSEL EMISSIONS … 23 6.2 EFFLUENT DISCHARGES … 24 6.2.1 GENERAL PRINCIPLES … 24 6.2.2 HYDROTEST WATER … 25 6.2.3 DECK DRAINAGE … 25 6.2.4 PRODUCED WATER … 26 6.2.5 SEA WATER SYSTEM (COOLING MEDIUM WATER) … 26 6.2.6 OVERBOARD DISCHARGE … 27 6.2.7 SEWAGE … 27 6.2.8 SAND … 28 6.3 NOISE … 28 6.4 LIGHTING… 30 6.5 CHEMICAL MANAGEMENT … 31 6.6 SOLID WASTES … 31 6.6.1 HAZARDOUS WASTE … 32 6.7 MONITORING … 32 6.8 EMERGENCY EVENTS … 33 6.9 ENVIRONMENTAL COMPLIANCE REGISTER… 33

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INTRODUCTION

The North Field is the world’s largest natural gas field and accounts for nearly all of the state of Qatar’s gas production. The reservoir pressure in the North Field has been declining due to continuous production since the early 1990s. The principal objective of the NFPS Project is to sustain the plateau from existing QG South Operation (RL Dry Gas, RGE Wet gas) and existing QG North Operation (QG1 & QG2) production areas by implementing an integrated and optimum investment program consisting of subsurface development, pressure drop reduction steps and compression. Refer to the figure below for a schematic of the North Field.

Qatargas Operating Company Limited is leading the development of the North Field Production Sustainability (NFPS) Project.

1.1 Project Objective

The objective of this Project includes:

• Achieve standards of global excellence in Safety, Health, Environment, Security and Quality

performance.

• Sustain the Qatargas North Field Production Plateau by installing new Compression Complex facilities CP6S & CP7S in QG south RGE with integration to the existing facilities under Investment #3 program.

• Facility development shall be safe, high quality, reliable, maintainable, accessible, operable,

and efficient throughout their required life.

1.2 Project Scope

The Project Scope includes detailed engineering, procurement, construction, transportation & installation, hook-up and commissioning, tie-in to EXISTING PROPERTY and provide support for start- up activities of the following facilities and provisions for future development. The WORK shall be following the specified regulations, codes, specifications and standards, achieves the specified performance, and is safe and fit‐for‐purpose in all respects.

Offshore

CP6S and CP7S Compression Complexes that are part of QG-S RGE facilities as follows:

• CP6S Compression Complex:

• Compression Platform CP6S, Living Quarters LQ6S, Flare FL6S

• Bridges BR6S-2, BR6S-3, BR6S-4, BR6S-5

• Bridge linked Tie-in to RP6S

Production from existing wellheads (WHP6S & WHP10S) and new wellhead (WHP14S) are routed via riser platform RP6S to compression platform CP6S to boost pressure and export to onshore via two export lines through the existing WHP6S pipeline and a new 38” carbon steel looping trunkline from RP6S (installed by EPCOL). CP6S is bridge-linked to RP6S.

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• CP7S Compression Complex:

• Compression Platform CP7S, Living Quarters LQ7S, Flare FL7S

• Bridges BR7S-2, BR7S-3, BR7S-4, BR7S-5

• Bridge linked Tie-in to RP7S

CP7S shall receive production from existing wellheads (WHP5S & WHP7S) and new wellhead (WHP13S). There is only one export line for CP7S through the existing export pipeline from WHP7S. CP7S is bridge-linked to RP7S.

RGA Complex Destressing

Migration of the Electrical power source, Telecoms, Instrumentation and Control systems from WHPs and RPs hosted by RGA to the respective Compression Complexes listed below:

• WHP6S, WHP10S, WHP14S, RP6S and RP10S to CP6S Compression Complex

• WHP5S, WHP7S, WHP13S and RP7S to CP7S Compression Complex

Destressing of Telecoms, Instrumentation and Control system in RGA Complex Control Room, which would include decommissioning and removal of telecom system devices and equipment that would no longer be required post migration and destressing activity.

Onshore

An Onshore Collaborative Center (OCC) will be built under EPC-9, which will enable onshore based engineering teams to conduct full engineering surveillance of all the offshore facilities. The OCC Building will be located in Ras Laffan Industrial City (RLIC) within the Qatar Gas South Plot. MICC & Telecommunication, ELICS related scope will be performed in the OCC building.

Figure 1.2.1: NFPS Compression Project COMP2 Scope

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2 DEFINITIONS AND ABBREVIATIONS

2.1 Definitions

Definition

Description

COMPANY

Qatargas Operating Company Limited.

CONTRACTOR

Saipem S.p.A.

DELIVERABLES

FACILITIES

All products (drawings, equipment, services) which must be submitted by CONTRACTOR to COMPANY at times specified in the contract. All machinery, apparatus, materials, articles, components, systems and items of all kinds to be designed, engineered, procured, tested and manufactured, constructed, supplied, permanently installed by CONTRACTOR at SITE in connection with the NFPS Project as further described in Exhibit 6.

fabricated,

MILESTONE

A reference event splitting a PROJECT activity for progress measurement purpose.

PROJECT

NFPS Offshore Compression Complexes Project COMP2

SITE

(i) any area where Engineering, Procurement, Fabrication of the FACILITIES related to the CP6S and CP7S Compression Complexes are being carried out and (ii) the area offshore required for installation of the FACILITIES in the State of Qatar.

SUBCONTRACT

Contract signed by SUBCONTRACTOR and CONTRACTOR for the performance of a certain portion of the WORK within the Project.

SUBCONTRACTOR

Any organization selected and awarded by CONTRACTOR to supply a certain Project materials or equipment or whom a part of the WORK has been Subcontracted.

WORK

Scope of Work defined in the CONTRACT.

WORK PACKAGE

The lowest manageable and convenient level in each WBS subdivision.

VENDOR

The person, group, or organization responsible for the design, manufacture, the Equipment/Material.

load-out/shipping

testing,

and

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2.2 Abbreviations

Code

ADR

AFC

Definition

Accord European Relatif au Transport International des Merchandises Dangereuses par Route

Approved for Construction

ALARP

As Low As Reasonable Possible

BAT

BOD

BOD5

BPEO

BR6S-2

BR6S-3

BR6S-4

BR6S-5

BR7S-2

BR7S-3

BR7S-4

BR7S-5

BWMC

CFC

CH4

Best Available Techniques

Basis of Design

Biochemical Oxygen Demand, 5 day

Best Practicable Environmental Option

Bridge 2 at Compression Platform at WHP 6 Complex

Bridge 3 at Compression Platform at WHP 6 Complex

Bridge 4 at Compression Platform at WHP 6 Complex

Bridge 5 at Compression Platform at WHP 6 Complex

Bridge 2 at Compression Platform at WHP 7 Complex

Bridge 3 at Compression Platform at WHP 7 Complex

Bridge 4 at Compression Platform at WHP 7 Complex

Bridge 5 at Compression Platform at WHP 7 Complex

Ballast Water Management Convention

Chlorofluorocarbon

Methane

CHARM

Chemical Hazard Assessment and Risk Management

Cl2

CO2

COD

CP6S

Chlorine

Carbon Monoxide

Carbon Dioxide

Chemical Oxygen Demand

Compression Platform at WHP 6 Complex

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Definition

Compression Platform at WHP 7 Complex

Dissolved Oxygen

Emergency Diesel Generator

Exclusive Economic Zone

Environmental Protection Agency

Engineering, Procurement and Construction

NFPS Offshore Topside Project - Engineering, Procurement and Construction

Factory Acceptance Testing

Front End Engineering Design

Flare Platform at WHP 6 Complex

Flare Platform at WHP 7 Complex

Greenhouse Gases

Globally Harmonized System

Good International Industry Practices

Hydrogen Sulphide

Hydrochlorofluorocarbon

Hydrofluorocarbon

Code

CP7S

EDG

EEZ

EPA

EPC

EPCO

FAT

FEED

FL6S

FL7S

GHG

GHS

GIIP

H2S

HCFC

HFC

HOCNF

Harmonized Offshore Chemical Notification Format

HSE

IAPP

IFC

IMDG

IMO

Health, Safety and Environment

International Air Pollution Prevention

International Finance Corporation

International Maritime Dangerous Goods

International Maritime Organization

Living Quarter

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Definition

Living Quarters Platform at WHP 6 Complex

Living Quarters Platform at WHP 7 Complex

The International Convention for the Prevention of Pollution from Ships

Marine Environment Protection Committee

Marine Logistic Lead

Ministry of Municipality and Environment

Nitrous Oxide

North Field Production Sustainability

Nitrogen Oxides

Nitrogen Dioxide

Onshore Collaborative Centre

Offshore Chemical Notification Scheme

Ozone Depleting Substance

Operations Installation Manager

Oslo-Paris Convention

Perfluorocarbons

Code

LQ6S

LQ7S

MARPOL

MEPC

MLL

MME

N2O

NFPS

NOx

NO2

OCC

OCNS

ODS

OIM

OSPAR

PFC

PLONOR

Posing Little Or No Risk

QG-S

RGA

RGE

Particulate Matter

Qatargas

Qatargas South

Qatar Petroleum

RasGas Alpha

RasGas Expansion - Wet Gas System

Ras Laffan

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Code

RLIC

Definition

Ras Laffan Industrial City

ROPME

Regional Organization for the Protection of the Marine Environment

RP6S

RP7S

SOx

SO2

TSS

VOC

WHO

WHP5S

WHP6S

WHP7S

WHP10S

WHP13S

WHP14S

WMP

Riser Platform at WHP 6 Complex

Riser Platform at WHP 7 Complex

Sulphur Oxides

Sulphur Dioxide

Total Suspended Solids

United Nations

Volatile Organic Compound

World Bank

World Health Organization

Wellhead Platform 5S

Wellhead Platform 6S

Wellhead Platform 7S

Wellhead Platform 10S

Wellhead Platform 13S

Wellhead Platform 14S

Waste Management Plan

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3 REFERENCE, RULES, CODES AND STANDARDS

The following codes, standards and specifications are referenced within the document shall be considered as part of this philosophy. Conflict among applicable specification and / or codes shall be brought to the attention of the COMPANY for resolution. COMPANY decision shall be final and shall be implemented. The latest editions of codes, standards and specifications effective as on date of contract shall be followed.

In general, the order of precedence shall be followed:

a) Qatari Government and Regulatory Requirements

b) COMPANY Procedures, Policies and Standards (Exhibit 5 Appendix I)

c) Project Specifications

d) Industry Codes and Standards

e) COMPANY and CONTRACTOR’s Lessons Learned

3.1 Qatari Government and Regulatory Requirements

S. No

Document Number

Title

Law No. 30 of 2002

The Law of the Environment Protection 30/2002

Executive By-Law for Law No. 30 for 2002

Executive By-Law for the Environment Protection Law, Issued vide the Decree Law No. 30 for the Year 2002

Law 21/2007

Control of the Ozone-Depleting Substances

Executive Regulation No. 4 of 2005

Resolution No. 4 of 2005 for the Executive By-Law for the Environment Protection Law, Issued vide the Decree Law No. 30 for the Year 2002

3.2 Company Documents

S. No

Document Number

Title

P36-X03-0003

Marine Operation Manual, Rev 3.

PRT-HLT-PRC-023

Hazardous Materials Management Procedure, Rev 0

PRT-HLT-PRC-012

Radiation Protection – Nucleonic Gauge, Rev 0

PRT-RMI-PRC-002

SHE Incidents Reporting & Management, Rev 0

SPC-ENV-001

QP Specification for Waste Management

PRT-ERP-PRC-002

Tier 1 Offshore Emergency Response Plan, Rev 0

COMP-QG-EN-PLN-00001

Environmental Management Plan, Rev 00

COMP-QG-EN-PLN-00002

Regulatory Compliance Plan, Rev 00

7511266-22088

Marine Fauna Protection

PRT-ENV-PRC-002

Waste Management, Rev 05

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S. No

Document Number

Title

PRT-ENV-PRC-018

Environmental Permitting, Rev 02

PRT-ENV-PRC-013

Environmental Aspects and Impact Procedures, Rev 05

PRT-ENV-PRC-036

Spill Prevention and Control Plan, Rev 02

PRT-HLT-PRC-004

QG Noise Control and Hearing Conservation Standard

Exhibit 6, Appendix J

Environmental Impact Assessment (EIA) Requirements

3.3 Project Documents (FEED)

S. No

Document Number

Title

COMP-QG-PR-REP-00003

QG-S RGE Compression BOD for FEED

200-20-PR-DEC-00006

Draining, Purging and Venting Philosophy

200-20-PR-DEC-00005

Overpressure Protection Philosophy

200-20-SH-REP-06006

Environmental Management Plan (Greenfield),

201-30-SH-REP-06007

Environmental Management Plan (Brownfield)

200-20-SH-REP-00012

Environmental Regulatory Compliance Register

200-20-SH-DEC-00002

Technical Safety Basis of Design (Offshore)

200-20-SH-REP-01001

Noise And Vibration Study – Greenfield.

200-20-SH-REP-06008

200-20-SH-REP-00022

200-20-SH-REP-00028

200-20-SH-REP-00025

and

Discharges

Waste Study

and Management

Emissions, Quantification (Greenfield) Gas Dispersion and Hot Plume Study– Greenfield Flare Dispersion Study Modelling H2S – Greenfield Safety, Health, Environment Action Management (SHEAM) Register

Including 3D CFD

200-20-SH-DEC-00001

Environment Basis of Design

3.4 Project Documents (Detailed Design)

S. No

Document Number

Title

200-20-SH-DEC-00005

200-20-SH-DEC-00007

Technical Safety & Loss Prevention Design Philosophy for CP6S and CP7S Complexes Noise & Vibration Design Philosophy for CP6S and CP7S Complexes

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S. No

Document Number

Title

200-20-PR-DEC-00025

200-20-PI-DEC-00004

200-20-PR-DEC-00021

200-20-PR-DEC-00024

200-20-PR-DEC-00019

Draining, Purging and Venting Philosophy for CP6S and CP7S Complex Piping & Layout Basis of Design for CP6S and CP7S Complexes Utilities Design Basis for CP6S and CP7S Complexes Overpressure Protection Philosophy for CP6S and CP7S Complexes. Process Design Basis for CP6S and CP7S Complexes

560-20-PR-MAB-00001

Heat and Material Balance for CP6S Complex

Hold 1

200-20-SH-REP-00049

Health,

Environment

Safety, Action Management (SHEAM) Register for CP6S and CP7S Complexes Vent Dispersion Study for CP6S and CP7S complexes Assumption Register for ship collision study for CP6S and CP7 Complex

200-20-EL-DEC-00006

Lighting Design Philosophy

3.5

International Codes and Standards

S. No

Document Number

Title

Vienne Convention

Montreal Protocol

Basel Convention

Rotterdam Convention

Vienna Convention for the Protection of the Ozone layer Montreal Protocol on Substances that Deplete the Ozone Layer Basel Convention on the Control of Trans- boundary Movements of Hazardous Waste and Their Disposal Rotterdam Convention on the Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade

CBD

Convention on Biological Diversity

Stockholm Convention

Kyoto Protocol

Stockholm Convention on Persistent Organic Pollutants United Nations Framework Convention on Climate Change Kyoto Protocol to the UN Convention on Climate Change

Minamata Convention

Minamata Convention on Mercury

CMS

OSPAR

Convention on the Conservation of Migratory Species of Wild Animals

Oslo-Paris Convention

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S. No

Document Number

Title

Kuwait Convention

MARPOL 73/78

BWM Convention

OSPAR Agreement 2015-18

American Petroleum Institute

ICRP Publication 103

International Atomic Energy Agency (IAEA)

European Commission

United Nations

International Maritime Organization (IMO)

Kuwait Regional Convention for Cooperation and Protection of Marine Environment from Pollution and its Protocols International Convention for the Prevention of Pollution from Ships (1973G) as amended by Protocol MARPOL (1978G) International Convention for the Control and Management of Ships’ Ballast Water and Sediments, 2004 International Convention on the Control of Harmful Anti-Fouling Systems on Ships of 2001 International Convention about Civil Responsibility for Oil Pollution of 1992 International Oil Pollution Compensation Funds of 1992 United Nations Convention on the Laws of the Sea General Regulations of Environment in the Gulf Cooperation Council (GCC) States International Finance Corporation (IFC) Performance Standards IFC General Environment, Health, and Safety (EHS) Guidelines, Environmental. Air Emissions and Ambient Air Quality, April 2007. IFC EHS Guidelines for offshore oil and gas development, June 2015 IFC EHS Guidelines for onshore oil and gas development, April 2007

EU Directive 2008/1/EC concerning IPPC

Guidelines to reduce the impact of offshore installations lighting on birds in the OSPAR maritime area American Petroleum Industry Compendium of Greenhouse Gas Emissions Estimation Methodologies for the Oil and Natural Gas Industry, 2009. The 2007 Recommendations of the International Commission on Radiological Protection

GIIP for Management of NORM Residues

Best Available Techniques Guidance Document on Upstream Hydrocarbon Exploration and Production UN Regulations on the Transport of Dangerous Goods and the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) International Maritime Dangerous Goods (IMDG) Code

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S. No

Document Number

Title

ROPME Protocol Requirements

World Health Organization (WHO)

WHO global air quality guidelines. Particulate matter (PM2.5 and PM10), ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide, 2021 A Voluntary Standard for Global Gas Flaring and Venting Reduction, the World Bank, May 2004

NORSOK S-002:2004

Working Environment

OSHA 1910.95

Occupational Noise Exposure

US EPA Leak Detection and Repair: A Best Practices Guide

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4 PURPOSE & SCOPE OF WORK

4.1 Purpose

The purpose of this document is to describe the environmental regulatory requirements and legislation that will apply to the NFPS Compression Project. This document will outline the considerations for the design and operation of the Project with respect to safeguarding the environment. The general principles are for facilities to be designed and operated in compliance with Qatar regulations, COMPANY policies and standards, and the international treaties to which Qatar is a signatory.

4.2 Scope of Work

This philosophy is applicable to the Greenfield and associated Brownfield facilities at CP6S and CP7S compression complexes. It covers the topsides areas, technical rooms and the living quarters.

The scope covers emissions to air, effluent discharges, noise and solid waste, and the legislation and regulations pertaining to actual limits for the emissions and discharges.

For brownfield facilities, blowdown from WHP6S, RP6S, WHP7S and RP7S will be connected to the new FL6S & FL7S. Since FL6S and FL7S are part of the scope of this document the existing environmental specification need not be updated.

Dedicated open drain system is designed for CP6 and CP7; there is no interconnection with RP6 and RP7 facilities. The closed drain system is instead provided with pumps for transferring the liquid to RPs and merging it with production fluids. The closed drain pumps flowrate is intermittent and very low which will not have impact on overall export pumps capacity.

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5 GENERAL ENVIRONMENTAL PRINCIPLES

The Project will aim to reduce all potential environmental impacts that could result from its activities to ALARP levels, based on the following principles:

• Strict adherence to Qatar environmental regulations, international standards and COMPANY

standards;

• Use of Best Available Technique (BAT), Best Practicable Environmental Option (BPEO) and

GIIP will be implemented;

• Minimization of water use, Greenhouse Gas (GHG) emissions along with air quality indicators,

wastewater discharge and solid wastes from the initial design stage;

• Process design and selection of associated chemicals should pay due regard to the final

•

disposal of the chemicals and empty containers; In addition to minimization, appropriate pollution mitigation measures should be adopted such as treatment and safe disposal of waste streams as necessary to meet environmental criteria; Implementation of energy efficient technology, where possible; and

• • Facilities shall be designed and shall operate with the intent of reducing the potential for associated negative environmental impacts to As Low As Reasonably Practicable (ALARP).

Where there is conflict between the general and industry specific legislative limits, the more stringent value shall be applied.

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6 ENVIRONMENT MANAGEMENT CRITERIA

6.1 Air Emission Sources

Atmospheric emissions from COMP2 facilities normal operation will arise from the following sources:

• Gas Turbine Compressor (GTC);

GTC will have continuous venting from the primary vent which will contain process gas (leakage across primary seal) which is diluted by the Nitrogen via the secondary seal. The secondary vent will have Nitrogen from secondary seal plus separation gas which also is Nitrogen and if integrity issues (seal failure) from the primary seal can see process gas migrate through to the secondary vent. These are continuous vents. Refer section 6.1.3 for further details on venting. GTC casing will be drained to the closed drain system this when pressurized. The frequency is following period of settle out time in which liquid may form from condensing process gas (Wet Gas) in particular following blow down scenario. So, it is part of operating procedure that casing must be drained pre commencing start-up.

• Gas Turbine Generator (GTG);

The GTG will have fuel gas vented at time during start-up/shutdown cases. Refer section 6.1.3 for further details.

• LP Flaring during Normal Operation; • Venting to safe location for toxic, flammable and asphyxiating releases (from intermittent,

startup vents);

• Fugitive emissions from leakage of seals in valves, flanges, pumps, compressors, portable diesel driven equipment (to be used by blast and paint teams and during maintenance campaigns);

• Non-continuous /equipment maintenance emissions from firewater pumps and EDG operation; • Vessel operations.

Atmospheric emissions from startup, abnormal operation/emergency include:

• HP Flaring; and • Emergency diesel generator (EDG) & Firewater pumps.

Details of the emission sources and quantitative estimation shall be elaborated in the Emissions, Discharges and Waste Quantification and Management Study [Ref.28]. The following sections further discuss the criteria for emissions to atmosphere from this project scope.

6.1.1 Ambient Air Quality

Project emissions shall meet the national legislative requirements namely the Law on the Protection on the Environment, 2002, of Qatar [Ref.2] which defines the legislative framework for air quality. For offshore facilities, Oil and Gas Industry stack emission standards are provided in Table 6-1 as stipulated within the law [Ref.2]. For ambient air quality limit, it is tabulated in Table 6-3.

GHG emissions released from gas turbine generators for power generation and export compressors shall also meet the requirements stipulated within the Qatari legislation [Ref.2]. For gas turbine engines less than 25 MW, the emission of Nitrogen Oxides (NOx) shall be controlled by dry low NOx burners. Emission standards for gas turbines of more than 25 MW are provided in Table 6-2.

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Table 6-1 : Oil and Gas Industry Stack Emission Standards [Ref.2].

POLLUTANT

LIMIT EMISSION VALUE

Particulate matter (PM)

Hydrogen Sulphide (H2S)

Carbon monoxide (CO)

Sulphur Dioxide (SO2)

Sulphur Oxides (Sox)

Nitrogen Oxides (Nox)

Oil fueled: 50 mg/Nm3

Gas fueled: 5 mg/Nm3

15 mg/Nm3

500 mg/Nm3

27 ppm (or equivalent to 55 mg/Nm3)

Table 6-2: Gas Turbine Emissions Standards >25 MW.

POLLUTANT

LIMIT EMISSION VALUE

QATAR GAS TURBINE EMISSIONS (> 25 MW) [Ref.2]

Particulate matter (PM)

5 mg/Nm3

Sulphur oxides (SOx)

500 mg/Nm3

Nitrogen oxides (NOx)

27 ppm (or equivalent to 55 mg/Nm3)

Table 6-3: Ambient Air Quality Limits

POLLUTANT

AVERAGE PERIOD

AMBIENT AIR QUALITY LIMIT (ug/m3)

National Standard (Law 30/2002)

RLIC Env Regulations (2020)

NO2

SO2

1 Hr

24Hr

Annual

1 Hr

24Hr

400

150

100

365

400

150

1300

365

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POLLUTANT

AVERAGE PERIOD

AMBIENT AIR QUALITY LIMIT (ug/m3)

National Standard (Law 30/2002)

RLIC Env Regulations (2020)

PM5

PM10

H2S

Ozone

Annual

24Hr

Annual

1 Hr

24Hr

1Hr

24Hr

150

235

120

Air quality impacts in offshore areas are unlikely to affect these sensitive receptors, given that only workers should be present on offshore locations. Although potential impacts on workers in accommodation areas should be compared with occupational air quality standards that are established for workers rather than sensitive receptors.

6.1.2 Ozone Depleting Substances (ODS)

The State of Qatar has signed and ratified the Montreal Protocol in 1996. Project design shall comply with the provisions defined in the Montreal Protocol [Ref.46] on prohibiting systems filled with chloro- fluorocarbons (CFC), hydrochlorofluorocarbons (HCFC) or halons listed as banned or to be banned, under the Protocol.

These materials are considered to cause depletion of the ozone layer in the stratosphere and initiate other environmental damage. As permitted by the Montreal Protocol the Project shall use hydrofluorocarbons (HFC), which are not harmful to the stratospheric ozone although HFCs are to be phased out in Qatar in 2028 as per the Kigali Agreement of the Montreal Protocol [Ref.46]. Alternatives to HFCs include natural refrigerants (e.g. propane or ammonia based), hydrofluoroolefins (HFOs), and HFC-HFO blends can be used.

6.1.3 Flaring / Venting

The flare system for the CP6S and CP7S compression complexes are designed to collect and safely dispose all high / low pressure, flammable, toxic and/ or waste gases and liquids during maintenance, operations and during process upset or emergency conditions, with details outlined in the Overpressure Protection Philosophy [Ref.22 &38]. The flare system is segregated into HP Flare and LP Flare system

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to accommodate the different limitations of the individual relieving and depressuring devices. The flare is continuously lit, fueled by purge gas and with pilot lights to prevent flameout.

Compressor Primary seal gas vents will be routed to LP flare and secondary seal gas (Nitrogen) vents shall be routed to atmosphere at safe location. Only during secondary seal failure, hydrocarbon is vented to safe location. The GTC fuel gas vent is connected to LP Flare. GTG fuel gas vent between first two SDVs is connected to HP flare and GTG fuel gas vent between second and third SDVs is routed to safe location. FG vents between dual block valves will be routed to flare.

A venting system shall be applied to maintain atmospheric pressure in the open systems and in non- blanketed storage tanks. A slightly positive pressure will be maintained in blanketed storage tanks. For both GTC’s and the fuel gas from GTG’s, should provide the allowable back pressures to enable venting to LP Flare System for those required vents.

There are two types of vents, [Ref. 21&35]:

• To atmosphere at a safe location (toxic, flammable and asphyxiating streams).

• To atmosphere (all non-hazardous venting).

Equipment and systems shall be vented to atmosphere at safe location and shall include open drain systems, diesel storage tank (equipped with flame arrestor), demineralized water tank with nitrogen blanketing, nitrogen system, helifuel system, chemical injection system (as necessary for the chemicals selected) Lube oil tank forced vent from GTC package, GTC package secondary seal vents and hydrogen vent from Water Chlorination Package. Vent from LQ Sewage Treatment Package shall be routed away from manned areas and air intake [Ref.35]. Gas dispersion calculation can be performed provided flowrates, composition and vent sizes are available to determine the vent location. .

Equipment to be vented to atmosphere include compressed air, instrument air, and freshwater system [Ref.35].

It is noted that hydrocarbons, flammables, or other toxic vapor mixtures venting to atmosphere shall not be permitted and avoided as practicably possible [Ref.26]. The discharge of all atmospheric vents shall be at a safe location away from personnel and areas where personnel may be present and away from areas where vented vapours can collector accumulate, outside of building, away from the hot exhaust or other ignition sources and away from ventilation intakes and also access or passageway. This requirement shall apply to any vent, including helifuel system vents at LQ roof, temporary vents, which may be installed in enclosures and buildings [Ref. 35&36].

Low pressure atmospheric tanks and vessels containing non-volatile liquids such as diesel fuel, lube oil, treating chemicals, etc. shall be provided with open vent lines [Ref. 21&35] as the requirement to vent to “a safe location”. Gas blanketed and atmospheric tanks and other small lighter-than-air vents like fuel gas vent from GTG skid and lube oil tank /reservoir from the lube oil demister shall be piped past the edge of the platform for discharging at high, outboard points.

The minimum criterion for safe location is:

a) At least 3 m (10 ft) above any platform, elevated accessway etc. located within a horizontal distance of 7.5m (25ft). All elevations shall be reviewed for the potential exposure i.e., crane cabin, cooling medium expansion vessel etc.

b) At least 15.2 m (50 ft) measured horizontally from any source of ignition.

c) A minimum of 4.9 m (16 ft) from rooms/enclosures air intakes or windows.

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Vent dispersion study [Ref.42] will be carried out for vents releases of HC, H2S and N2 gases for credible scenarios to determinate the final location at safe position of vent pipe termination.

As per IFC guidelines [Ref.65,66&67], continuous venting is not considered GIIP and should be avoided. Hydrocarbon gas streams should always be routed to an efficient flare gas system including during emergency events or process upset, although continuous flaring of gas should also be avoided wherever practical and possible. Adequate assessment of alternatives should be conducted and if flaring is the only viable option, elimination of continuous flaring shall be achieved. The COMP2 Project shall adopt measures consistent with Global Gas Flaring and Venting Reduction Voluntary Standard (part of the Global Gas Flaring Reduction Public-Private Partnership) [Ref.78] for the flare.

However, since continuous purging of vent lines is the generally recommended method of providing the flashback protection, hence it is applicable to this COMP2 project. Flame arrestors are fewer desirable alternatives, being subject to corrosion and blockage. For many small vents, purging is usually not practical. For these, flame arrestors may be installed on the discharge ends of the vent lines [Ref.35].

To ensure adequate pollution prevention and control measures are in place, best design and operating practices for the flare shall be considered, as follows:

Implement source gas reduction measures to the extent possible;

• • Use efficient flare tips and optimize the size and number of burning nozzles; • Maximize flare combustion efficiency by controlling and optimizing flare fuel, air, and stream

flow rates to ensure the correct ratio to assist stream to flare stream;

• Minimize flaring from purges and pilots without compromising safety, through measures such as installation of purge gas reduction devices, vapor recovery units, inert purge gas, soft seat valve technology where appropriate, and installation of conservation pilots;

• Minimize risk of pilot blowout by ensuring sufficient exit velocity and providing wind guards; • Use a reliable pilot ignition system; •

Install high-integrity instrument pressure protection systems, where appropriate, to reduce overpressure events and avoid or reduce flaring situations;

• Minimize liquid carryover and entrainment in the gas flare stream with a suitable liquid

separation system;

• Minimize flame lift off and/or flame lick; • Operate flare to control odor and visible smoke emissions (no visible black smoke); • Situate flare at a safe distance from accommodation units; Implement burner maintenance and

replacement programs to ensure continuous maximum flare efficiency;

• Meter flare gas; • There shall be no routine operational flaring. Hydrocarbon vapors from emergency relief/

equipment depressurization shall be directed to a flare;

• HP and LP Flare headers will be continuously purged with LP fuel gas, with nitrogen provided

as back-up purge gas in the event of loss of fuel gas; and

• Flare combustion requirement >98% and heat input >11 MJ/SM3.

6.1.4 Fugitive Emissions

Fugitive emissions of hydrocarbons shall be minimized through a combination of good engineering design practices and good operation and maintenance practices for reducing fugitive gaseous compounds that affect air quality (i.e. CH4, H2S, SOx, NOx, VOC and CO). All valves in Sour Service

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NACE shall be fugitive emission tested as per ISO 15848-2 class B with 10% of test in case of failure upgrade at 100%. A Leak Detection and Repair Program (US EPA Leak Detection and Repair: A Best Practices Guide, Ref. [81]) will be implemented during Project facility operations to minimize fugitive CH4 and/ or VOC emissions. Other specific measures to be implemented as necessary, wherever practicable, including:

• Routing the discharge of safety relief devices in hazardous services to a closed flare system; • Using plugged or capped ends on drain valves, sample valves and test connections to

minimize emissions from open-ended connections; • Using closed-loop sampling systems where possible; • Using suitable pump, compressor seals to minimize gas release; • Minimizing the number of flange fittings; • Using welded pipework and low leakage valve systems; Implementing leak detection and repair programs; and • • Installing vapor control units for hydrocarbon loading and unloading.

6.1.5 GHG Emissions

The State of Qatar has signed and ratified the Kyoto Protocol in 2005 [Ref.52]. The Kyoto Protocol aims to limit the emissions of six GHGs, namely carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrochloro-fluoro-carbons (HCFC), perfluoro-carbons (PFC) and sulfur hexafluoride (SF6).

The project shall employ effective energy efficiency measures with regards to minimizing CO2 emissions arising from fuel gas combustion.

6.1.6 GTG /GTC Emissions

To ensure compliance with applicable regulatory requirements, GTG/ GTC shall be provided with Predictive Emission Monitoring System (PEMS) and emissions should be reported to MME during operation phase. Factory Acceptance Test (FAT) & Site Acceptance Test (SAT) should also be performed by vendor for all turbine vents to ensure compliance and quality of the equipment. PEMS should be certified as per USEPA, Performance Specification 16—Specifications and Test Procedures for Predictive Emission Monitoring Systems In Stationary Sources. In addition, in-situ stack testing could also be conducted.as and when deemed necessary.

6.1.7 Vessel Emissions

Although the State of Qatar has not signed the Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL) on the Prevention of Air Pollution from Ships, QG has committed to meet the Annex VI requirements [Ref.57]. Therefore, all vessels involved in the Project (including rigs) will require adherence to MARPOL Annex VI requirements including possession of a valid International Air Pollution Prevention (IAPP) certificate.

Atmospheric emissions from vessels at all phases of the Project shall adhere to MARPOL Annex VI requirements, notably:

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• Marine fuel shall meet a Sulphur limit of 0.5% in accordance with Resolution MEPC.320(74);

and

• NOx emissions from diesel engines shall be controlled in accordance with the NOx Technical

Code 2008 (Resolution MEPC.177(58)).

For marine vessel movement during operation phase, refer Assumption Register for Ship Collision Study for CP6S and CP7 Complex [Ref.43]

6.2 Effluent Discharges

Project activities will generate liquid, semi-solid and solid wastes that will need to be disposed of safely without causing harm to the environment or personnel. These discharges require specific management to reduce the risk of harming the environment and personnel to the level of ALARP. Offshore wastewater discharges will comply with the limits prescribed by the Executive by Law No. 4 (2005) (Environmental Protection Standards) [Ref.4]. In the absence of any specific Qatar limits, relevant international standards and guidelines shall apply. For existing facilities, the discharges are required to meet ROPME Protocol requirements [Ref.76].

Potential effluent sources from the COMP2 Project are limited to the following:

• Hydrotest water from pipeline commissioning; • Deck drainage; • Produced water; • Cooling water; • Overboard discharge (including reject stream from reverse osmosis / demineralized water

treatment package);

• Sewage; • Firewater and Foam

6.2.1 General Principles

Effluent management principles should include the following:

• Water use to be minimized and wastewater reused (following appropriate treatment) or

recycled, wherever practicable;

• Risks of contamination to the environment must be minimized; • Discharges shall be in compliance with Qatar water discharge limits as detailed below; • Appropriate engineering controls shall be in place to prevent leakages from pipes and vessels,

including regular maintenance and inspection to detect leaks;

• Adequate spill control (bunding/ coaming) and drainage arrangements shall be provided where

hydrocarbon and chemical inventories are stored, handled or processed; and

• All environmentally harmful liquids shall be stored on a hard-surfaced bunded area to act as a

barrier to prevent pollution.

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6.2.2 Hydrotest Water

Hydrotest water shall be monitored to meet Qatar legislative discharge standards in the marine environment [Ref.2]. Direct discharge to sea of hydrotest water is permissible subject to receiving regulatory approval of a hydrotest management plan prepared prior to discharge of hydrotest water. In the absence of specific guidelines on hydrotest water management in Qatari Law, the pollution prevention and control measures outlined in the IFC guidelines [Ref.66 and 67] shall be applicable, as follows:

• Minimize the volume of hydrotest water offshore by testing equipment at an onshore site prior

to loading the equipment onto the offshore facilities;

• Use the same water for multiple tests; • Reduce the need for chemicals by minimizing the time that test water remains in the equipment

or pipeline;

• Carefully select chemical additives in terms of dose concentration, toxicity, biodegradability,

bioavailability, and bioaccumulation potential; and

• Send offshore pipeline hydrotest water to onshore facilities for treatment and disposal, where

practical.

Where disposal to sea is deemed to be the only feasible alternative, a hydrotest water disposal plan should be prepared and includes points of discharge, rate of discharge, chemical use and dispersion, environmental risk, and monitoring. The plan will need to be submitted to MME for approval.

6.2.3 Deck Drainage

For this COMP2 Project, the Open Drain System requirements are stated in Draining, Purging and Venting Philosophy for CP6S and CP7S Complexes [Ref.35]. The Open Drain System is segregated into hazardous and non-hazardous open drains. Hazardous drains are open drains collected from hazardous area Zone 0/Zone 1/Zone 2 and non-hazardous drains are open drains collected from non- hazardous area. The segregation is meant to avoid migration of a fire, flammable liquids or vapours, or toxic liquids or vapours from one hazardous area to another, or to a non-hazardous area. Liquid seal is provided at the end of both hazardous and non-hazardous header to prevent gas migration.

Hazardous area drip trays, hazardous area deck drain and non-hazardous area drip trays from CP shall be collected to CP Open Drain Tank. Non-Hazardous area deck drain for CP shall be discharged to overboard.

The CP Open Drain Tank is designed with Tilted Plate Interceptor (TPI) to meet 15ppmv oil in water outlet. Subsequently, the treated water will be discharge to the CP Open Drain Caisson.

The oil recovered from the CP Open Drain Tank will be pumped via 2 x 100% Open Drain Oil Pumps once high-level alarm is activated. Two connections (i.e. to Closed Drain Vessel and to portable container) are provided from Open Drain Oil Pump discharge to give flexibility to Operation.

The CP Open Drain Caisson receives water outlet from the CP Open Drain Tank. The Open Drain Caisson is provided as a secondary protection in case the required disposal specification is not met in the TPI tank (Hold 2).

Any recovered oil from the caisson will be pumped by Open Drain Caisson Pump and sent back to CP Open Drain Tank. Open Drain Caisson Pump shall be started manually and locally as required.

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Drain water treated for removal of oil and grease shall be monitored monthly to check that it is within the emission limit value [Ref.20 &39].

Drains and sample connections on level instruments, vessels and equipment with a substantial hydrocarbon or toxic inventory, or operating at high pressure, shall be tied into the closed drain system. This shall consist of headers segregated according to the piping class, terminating at the Closed Drain Vessel. The Closed Drain Vessel also serves as LP Flare KO Drum to receive low pressure flare gas. Flash gas from Closed Drain Vessel is connected to the LP flare header. The liquids collected in the closed drain vessel shall be returned by means of a pump to export header. This closed drain vessel shall not receive effluents from the open drains nor discharge into an atmospheric enclosure receiving open drain effluents [Ref.26 &35]. Recovered oil from the open drain tank will be routed to the Closed Drain Vessel.

6.2.4 Produced Water

Produced water needs to comply with Qatari legislation [Ref.2] which states that all polluting substances arising from production activities are not to be discharged to Qatar territorial waters or EEZ. As stated in the QG-S RGE Compression BOD [Ref.20], the current design for RGE and QG2 will follow existing philosophy to route the produced water along with hydrocarbon fluids to onshore with produced water to be separated and disposed at onshore.

6.2.5 Sea Water System (Cooling Medium Water)

Available non-chemical based antifoulant alternatives should be evaluated for their feasibility and, where practical, the seawater intake depth should be optimized to reduce the need for use of chemicals. Appropriate screens should be fitted to the seawater intake, if safe and practical, to avoid entrainment and impingement of marine flora and fauna. Where antifouling chemicals are to be used, the chemicals selected should be to the minimal strength required, with lowest bioaccumulation, bioconcentration, and toxicity to marine environment possible, with the dosing of the cooling water should be carefully considered.

Seawater shall adopt a non-contact and once-through system. Seawater will be used to cool / evacuate the heat recovered from the process via cooling medium system. Seawater at 33°C (summer intake temp) is lifted by the Seawater Lift Pump, filtered and dosed with hypochlorite for bio-fouling control prior sent to Cooling Medium / Seawater Cooler to cool the returned cooling water. The warmed seawater is discharged to sea at a maximum of 45°C (12oC temperature rise) via the Seawater Disposal Caisson [Ref.37].

In accordance with Qatari legislation [Ref.2] the temperature increment shall be a maximum of 3°C at 100 m from the discharge point and maximum daily chlorine content of 0.1 mg/l in seawater at 100 m from the discharge point. Cooling water shall be discharged at least 3 m below sea surface. Company internal procedure shall be applied for testing the free residual chlorine concentration of the cooling water. The testing frequency should follow the same procedure.

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Table 6-4 : Quality Criteria for Once- Through Seawater Cooling Water Discharge (See Note 1) [Ref.9]

PARAMETER

Temperature Rise (Note 2)

MAX ALLOWABLE LIMIT 3

Floating Particles

Chlorine residual

Dissolved Oxygen

None

0.1

2.0 (minimum)

Oil and Grease Differential (Note 3, 4)

UNIT OC mg/m2

mg/l

Notes:

The once-through cooling water would be discharged to sea at an appropriate mixing zone.
The temperature differential would be measured between the water intake and the edge of the agreed mixing zone where the initial dilution takes place. In case no studies have been undertaken, the edge of the zone would be taken as 100 meters from the point of discharge.
Oil & grease would be determined as per MOPAM method specified by the (SCENR). MOPAM

method is available from the EV department.

The increase over the level at the intake.

6.2.6 Overboard Discharge

Offshore effluents that will be disposed of overboard include those from the non-hazardous open drains and the reject streams (brine /concentrate) from the Reverse Osmosis and Demineralized Water Package. The non-hazardous open drains shall collect water from rain, washdown, or utility/ firewater and foam systems. In general, all overboard discharges are not expected to be contaminated with chemicals, however, these discharges to sea shall comply with the standards stipulated in Annex 4 under MME Executive By-Law [Ref.2 &32], as given in Table 6-5.

Table 6-5: Qatari Standard for Discharges into the Aquatic Environment [Ref.2 ]

PARAMETER

SYMBOL

LIMIT

Temperature Rise

Total Dissolved Solids

Total Suspended Solids

Floating Particles

Oil and Grease

∆T

TDS

TSS

6 to 9 Not more than 3 oC above the prevalent temperature

1500

Nil

UNIT

mg/l

6.2.7 Sewage

Under Qatari legislation, sewage from ships and offshore marine platforms may be discharged directly to sea subject to undergoing onboard treatment prior to discharge and being at a distance of not less than 4 nautical miles from the coast. Untreated sewage may be discharged directly to sea beyond 12 nautical miles from the shore as long as the discharge does not result in floating objects nor change the color of the water [Ref.2].

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Offshore discharges from the Sewage treatment system on the facility shall remain compliant with MARPOL 73/78b Annex IV requirements, where the MEPC.2(VI) international effluent standards and guidelines shall be applicable, as per Table 6-6.

The sewage system will be provided at the living quarters on CP6S and CP7S Complexes. The sewage treatment system receives and treats both black and grey water from the living quarters on the platform. The Sewage Treatment System will be aerobic type [Ref.37]. In sewage treatment plant, the ReDox, pH, Temperature from sewage treatment package shall be monitored, (vendor to advise). The vent from sewage treatment plant will be routed to downstream of the prevailing wind direction (wind rose) to ensure the odour in the ambient is swept away from the locations which are almost always manned.

Table 6-6 : MEPC.227(64) Standards for Onboard Sewage Discharge Quality [Ref.37&57]

PARAMETER

SYMBOL

LIMIT

Thermotolerant Coliform Count

Total Suspended Solids

TSS

Biochemical Oxygen Demand

Chemical Oxygen Demand

Residual chlorine

Raw Sewage Quality

Duration of Test

BOD5

COD

Cl2

100

125

6 to 8.5

0.5

Sewage generated under normal operational condition, but influent concentration of total suspended solids should be no less than 500 mg/l.

A minimum of 10 days and should be timed to capture normal operational conditions

UNIT

Thermotolerant coliforms/ 100 ml

mg/l

6.2.8 Sand

Produced solids (e.g. sand) are not expected. However, should there be any solids production observed, oily solids discharged to sea shall not have greater than 1% dry weight of oil in oily sand (as per IFC/WB recommendation). Sand disposal shall be estimated and reported to the Ministry of Municipality and Environment.

6.3 Noise

Noise will be emitted from various sources of the NFPS Project The main sources of noise are as follows:

• Generators; • Compressors; • Pumps;

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• Engine Drivers; and • Vessels.

Qatari Law on the Protection of the Environment, 2002, is applicable for both onshore and offshore activities, thus the Project is expected to abide with permissible noise limits for environmental noise as stipulated under Annex 3/5th under the Industrial Facilities area category [Ref.2]. IFC guidelines [Ref.65] also provides standard limits on noise for offshore installations. These limits are provided in Table 6-7 below.

Environmental noise limits stipulated under the law [Ref.2] are made to protect receptors against adverse effects of environmental nuisance from exposure to excessive level of noise. These limits differ from noise exposure to QG employees which is covered under Annex 3/6th of the law.

Table 6-7 : Permissible Environmental Noise Limits

QATARI LAW [Ref.2]

IFC GUIDELINES [Ref.53]

Maximum Limits of Noise (Average 20 minutes)

Maximum Limits of Noise (Average 1 hour)

Day Time (04:00 – 22:00)

75 dB (A)

Nighttime (22:00 – 04:00)

75 dB (A)

Day Time (07:00 – 22:00)

70 dB (A)

Nighttime (22:00 – 07:00)

70 dB (A)

AREA TYPE

Industrial Facilities

There are currently no prescribed limits for underwater noise under Qatari legislation or other applicable international standards or guidelines. Although no prescribed limits are available, the IFC guidelines [Ref.66] provide recommendation on mitigation measures that can be employed to reduce the risk of underwater noise impacts to marine species from noise-generating activities (e.g. Compression activities). In accordance to GIIP, this Project shall employ mitigation methods to mitigate noise-inducing activities to ALARP levels through:

• Usage of quietest possible technology; • Employing physical methods to reduce the source level; • Implementing physical methods to reduce the transmission of sound beyond the source; and • Establishing exclusion zones to reduce potential noise exposure to levels causing injuries or

behavioral disturbance to marine fauna.

Company requirement levels of noise exposure and workplace noise levels are principally derived from relevant standards and procedures [Ref.18,79]. Table 6-8 summarizes the noise limits for workplace applied in this Project.

Item

Description

Project Noise Limit

Company Standard

Remarks

Table 6-8 : Project Noise Limits

General Working Area Noise Level for CPs

82 dBA Leq12h

83 dBA Leq12h With respect to Company’s

Noise Control and Hearing Conservation Program 83 dBA is the noise limit for a 12-hour TWA exposure.

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Item

Description

Project Noise Limit

Company Standard

Remarks

Absolute Noise Level

115 dB(A) Outdoor

115 dB(A)

However, the target of 82 dB(A) limit is set based on the derived permissible limit from OSHA facilities and operates on a 12-hour shift manned. [Ref.80].

the COMP2

Absolute limit anywhere in a work area – personnel will not be permitted to work in the area where noise at this level is present. Sound from resulting emergency noise sources such as atmospheric Process Safety Valves (PSVs) and Flares shall not exceed 115 dBA at reasonably accessible in-plant locations.

The details are mentioned in Noise and Vibration Design Philosophy [Ref.34].

6.4 Lighting

Without compromising safe workplace lighting conditions, the Project shall minimize environmental and visual impacts.

In EIA report [Ref 19], it is mentioned that artificial lighting impact will be highly localized and of minor consequence to the ecosystem from the facility. These artificial lighting effects are already present at the existing platforms in the area, and hence they may not be impact for this Project.

In the absence of any legislative requirement for light emissions for Qatar, OSPAR [Ref.69] for minimizing impacts of lighting to biodiversity receptors shall be considered, including the following:

• Assessing all lighting equipment on offshore installations potentially emitting light outside the physical boundary of an installation to determine whether the light is essential for safety reasons and whether there is potential for reducing external emissions;

• Reducing the number of lights and intensity of lights, and adapting the light spectrum to those

•

that will have low impacts to biodiversity; In areas where lighting is not a continuous requirement, installation of automatic switches and light sensors should be considered. Otherwise, light sources should be automatically or manually controlled through the process control system. Normally unmanned platforms should have switches installed and during unmanned periods light should be switched off apart from lighting requirement to comply with national and international regulations on aviation and shipping navigation; and

• Where possible, external lights should be shielded to direct light only to areas where it is needed, and lights should be positioned in places where emissions to the surrounding environment can be minimized.

• Plant lighting will be designed as per Ref.44

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6.5 Chemical Management

Chemical selection shall be in alignment with ROPME protocols and guidelines and according to the lowest toxicity, lowest bioaccumulation potential and highest biodegradation potential, as applicable. Chemicals shall be selected according to the harmonized pre-screening scheme based on the OSPAR methodology [Ref.69].

All chemicals selected for the Project shall be registered in the Offshore Chemical Notification Scheme (OCNS) and regulated according to Harmonized Offshore Chemical Notification Format (HOCNF) and ranked as GOLD/ SILVER under the Chemical Hazard Assessment and Risk Management (CHARM) model or classified as chemicals with the least environmental risk (Category C to E) ranking for non- CHARMable products. Chemicals listed as Posing Little Or No Risk (PLONOR) under the OSPAR list are preferred.

Chemical storage areas shall adhere to the following requirements:

• Hazardous waste must be placed, stored in UN approved drums/containers, labelled and

transported onshore for waste disposal or treatment in an MME approved facility;

• Each primary chemical container shall have hazard labelling according to UN Globally

Harmonised System for Classification and Labelling of Chemicals (GHS);

• Only chemicals approved for use should be stored in the site storage facility, while those not yet approved shall be quarantined, controlled and monitored in a dedicated area until cleared;

• Only authorised personnel shall have access to the chemical storage area; • The first- expire / first- out principle shall be implemented in order to reduce the possibility of

having expired chemicals in stock; and

• Site is responsible to maintain and update its chemical inventory.

All storage areas for chemicals must be designed so that risk to personnel and the environment is minimized. The key areas which must be addressed for storage areas include:

• Spill containment; • Separation of storage area from offices, boundaries and the like; and • Segregation of incompatible chemicals.

6.6 Solid Wastes

The ‘Duty of Care’ principle shall be adopted for the management of waste streams generated by the Project’s facilities. Under the ‘Duty of Care’ principle, the waste producer (COMPANY) shall be responsible for ensuring the proper and safe disposal of wastes, even after it has been passed to another party. The Duty of Care for waste cannot be contracted away or delegated to a third party. The COMPANY is required to take all reasonable steps to manage any waste it generates and ensure its lawful disposal. A Waste Management Plan (WMP) documenting the waste strategy, storage (including facilities and locations) and handling procedures should be developed as recommended in the IFC guidelines [Ref.66 & 67]. The WMP should also include a clear waste tracking mechanism to track waste consignments from the originating location to the final waste treatment and disposal location.

As a minimum, the following shall apply:

• No floating foams or any solids may be discharged to sea;

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NFPS Offshore Compression Complexes Project COMP2 ENVIRONMENTAL DESIGN PHILOSOPHY FOR CP6S AND CP7S COMPLEXES

• All domestic waste shall be segregated to biodegradable, recyclables and reusables, and

transported to shore for disposal; and

• All hazardous waste shall be stored in a designated area prior to being transported to shore

for disposal at an approved MME facility.

The waste storage area shall be segregated for non-hazardous and hazardous wastes, and labelled accordingly. Non-hazardous wastes shall be further segregated based on its chemical and physical properties (e.g. biodegradable, recyclable, etc.). A food waste macerator shall also be provided at each LQ galley area. Both inside the galley and the galley laydown area to ensure discharge is disposed of as per IFC guidelines/regulations. Hazardous wastes shall be managed according to International Maritime Dangerous Good (IMDG) Code and Qatar legislative requirements. Hazardous wastes shall be packaged and labelled accordingly throughout its storage prior to being transported onshore for treatment and/ or disposal.

Ship waste are to be managed in accordance with MARPOL Convention. Macerators or incinerators shall also be provided onboard and ship waste should not be discarded within 500 m zone [Ref.5]. Any applicable waste discharged to sea shall be macerated to an approved size as per MME and MARPOL requirements. Waste materials shall be segregated into non-hazardous and hazardous waste for appropriate management. For non-hazardous wastes, disposal of non-hazardous solid and non- biodegradable wastes into the sea is not permitted with the exception of macerated food wastes. Non- hazardous wastes are to be segregated accordingly to its chemical and physical properties, and transported onshore for disposal or recycling by a government approved contractor.

6.6.1 Hazardous Waste

Hazardous materials shall be handled as per COMPANY Procedure [Ref.6]. Hazardous waste shall be managed according to International Maritime Dangerous Goods (IMDG) Code [Ref.63], UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS) [Ref.75] and Qatar legislative [Ref.1] requirements. Hazardous wastes shall be packaged and labelled accordingly prior to delivery onshore for treatment/ disposal by a government approved contractor. Selection of waste treatment options shall take into account BAT principles, minimization of risk and long-term liability.

As the presence of Mercury is anticipated in the separator gas as trace contaminant, the COMP2 Project shall adhere to the seawater quality standard as stipulated under Qatari legislation [Ref.4], where the concentration of Mercury in seawater shall not exceed 0.4 µg/l. According to the QG-S RGE Compression BOD [Ref.20], Mercury levels will be monitored quarterly based on EPA 245.2 AA Cold Vapor method and concentration is expected to be within 1 µg/m3 (or 0.001 µg/l), therefore is compliant with Qatari legislation [Ref.20] FEED Environment Basis Of Design [ Ref.32] and EPC Heat and Material Balance [Ref.40].

6.7 Monitoring

COMPANY shall, during all phases of the Project (pre-construction, construction, operation, decommissioning, closure and post-closure), engage in continuous, proactive and comprehensive self- monitoring to ensure compliance with applicable legislation and guidelines, this BOD and the Environmental Management Plan [Ref.23 & 24].

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NFPS Offshore Compression Complexes Project COMP2 ENVIRONMENTAL DESIGN PHILOSOPHY FOR CP6S AND CP7S COMPLEXES

A monitoring program should be developed to appropriately monitor emissions, effluent and waste in accordance with BAT principles for the incorporation of online analyzers and/ or manual sampling [Ref.73]. Monitoring frequency should be sufficient to provide representative data for the parameter being monitored. Monitoring should be conducted by trained individuals following monitoring and record keeping procedures and using properly calibrated and maintained equipment. Monitoring data should be analyzed and reviewed at regular intervals and compared with the operating standards, so that any necessary corrective actions can be taken.

6.8 Emergency Events

The following principles shall also be applied to mitigate impacts of an emergency event occurrence:

• All flammable, toxic and waste fluid from the emergency condition, start - up or maintenance or operational relief/ depressurization requirements for all hydrocarbon process systems will be routed to the flare system [Ref.22];

• Offshore installations shall be designed to avoid risks of leak of toxic gases and liquid [Ref.26]; • Adequate gas detection and mitigation measures shall be implemented to minimize H2S and

SO2 emissions during loss of containment incidents [Ref.26];

• The QG field is not an oil-producing field and the export will be condensate and gas, hence the risk of oil pollution could arise from diesel. Refer to the Marine Operation Manual [Ref.5] for oil pollution control measures;

• Adequate spill control (bunding/ coaming) and drainage arrangements shall be provided where hydrocarbon and chemical are stored, handled or processed. Drainage system will take into consideration deluge water where possible [Ref.26];

• Any spillage of fuel must be reported to QG (Operations Installation Manager (OIM) for

•

offshore and Marine Logistic Lead (MLL) for onshore) [Ref.5]; and In the event of any emergency in QG offshore facilities involving hazardous materials, the roles and responsibilities provided in COMPANY’s Offshore Emergency Response Plan [Ref.10] will be followed by offshore personnel. Any leaks, spills and unintentional releases should be reported in accordance with COMPANY Procedure [Ref.8]. Upon completion of emergency response, removal of contaminated material and clean-up will be the responsibility of end user of the Individual Asset or Operations group with support from other QG disciplines [Ref.6].

6.9 Environmental Compliance Register

An Safety, Health, Environment Action Management (SHEAM) Register [Ref.41] is developed to facilitate compliance to regulatory requirements applicable for the NFPS Compression Project COMP2 scope. This register tracks environmental issues to ensure project execution in full compliance with the applicable national and international laws, regulatory requirements, and industry standards.

Company No. Rev. 200-20-SH-DEC-00004_C````

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Project: Q-21699 - Saipem COMP2 Folder: RFQ Files

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