Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
COMPANY Contract No.: LTC/C/NFP/5129/20 CONTRACTOR Project No.: 033764
ASSET
: NFPS
Document Title
:
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
COMPANY Document No.
:
200-20-PI-SPC-00042
CONTRACTOR Document No.
:
033764-E-D00-18-SPM-TB-S-00007
Discipline
: PIPING
Document Type
: SPECIFICATION
Document Category/Class
:
1
Document Classification
:
Internal
28-APR-2025
28-APR-2025
28-APR-2025
B
28-APR-2025
Issued for Approval Gaurav Sharma
A
17-JAN-2025
Issued for Review
Gaurav Sharma
Piping Flexibility Engineer
Boopalan Dhanasekara Boopalan Dhanasekaran Lead Engineer Piping Flexibility
Ravin George
Ravin George
Piping Lead
REV.
DATE
DESCRIPTION OF REVISION
PREPARED BY
REVIEWED BY
APPROVED BY
Saipem S.p.A
THIS DOCUMENT IS PROPERTY OF QatarEnergy LNG. THIS DRAWING OR MATERIAL DESCRIBED THEREON MAY NOT BE COPIED OR DISCLOSED IN ANY FORM OR MEDIUM TO THIRD PARTIES, OR USED FOR OTHER THAN THE PURPOSE FOR WHICH IT HAS BEEN PROVIDED, IN WHOLE OR IN PART IN ANY MANNER EXCEPT AS EXPRESSLY PERMITTED BY QatarEnergy LNG.
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Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
REVISION HISTORY
Revision
Date
Revision Description
A1
06-JAN-2025
Issued for Inter Discipline Check
A
B
17-JAN-2025
Issued for Review
28-APR-2025
Issued for Approval
HOLDS LIST
Hold No
Hold Description
1
2
3
4
5
6
DELETED
DELETED
DELETED
DELETED
Section 7.1.8 Maximum allowable spans for GRE piping (HOLD) for vendor .
DELETED
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
TABLE OF CONTENTS
1
1.1
1.2
2
2.1
2.2
3
3.1
3.2
4
5
INTRODUCTION … 6
Project Objective … 6
Project Scope … 6
DEFINITIONS AND ABBREVIATIONS … 9
Definitions … 9
Abbreviations … 10
REGULATIONS, CODES AND STANDARDS … 11
Project Documents … 11
Applicable International Codes and Standards … 12
PURPOSE OF DOCUMENT … 12
GUIDELINE FOR SUPPORT SELECTION … 12
5.1
General Criteria … 12
5.1.1 Access for Corrosion Monitoring … 13
5.2
5.3
Unit of Measurement … 13
Allowable Loads on Piping and Support Components … 14
5.3.1 Allowable Loads for Supports Directly in Contact with Pipe … 14
5.3.2 Application of Standard Supports for Loads Higher than Maximum Allowable … 14
5.3.3 Allowable Load for Secondary Supports (Portals, Post, etc.) … 15
5.3.4 Support Sizing Based on Materials Mechanical Characteristics … 15
5.4
Post and Portals … 15
5.4.1 Support Sizing Based on Selection of Standard for Posts and Portal … 15
5.4.2 Support Connected to Structure … 15
5.4.3 Special Pipe Support (SPS) … 16
5.5 Material of Support Components … 16
5.5.1
Isolating Barrier (Neoprene Pad) … 17
5.5.2 Welding between CS and SS … 18
5.6
Special Cases of Supports Selection … 18
5.6.1 Shoes and Saddles Support … 18
5.7
5.8
Selection Criteria for Piping with Post Welding Heat Treatment (PWHT) … 18
Standard Supports Identification … 18
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
5.8.1
Identification Code … 18
5.8.2 Alphabetic codes identifying the function … 19
5.9
Special Supports Drawings … 19
5.9.1 Support Piping Classes … 20
5.10 Special Items Support … 21
5.11 Use of Elbow / Dummy Trunnion … 21
6
CONSTRUCTION REQUIREMENTS … 21
6.1
Characteristics of Supports to be Fabricated … 21
6.1.1 Excluded Supports from Fabrication … 21
6.1.2 Requirements for Clamped Supports … 21
6.2
6.3
Tolerances … 22
Plate Forming … 22
6.4 Welding … 22
6.4.1 Weld Symbols … 22
6.4.2 Fillet Weld Thickness … 22
6.4.3 Corrosion Prevention … 22
6.4.4 Post Weld Heat Treatment … 22
6.4.5 Hot-Dip-Galvanized … 22
6.5
Painting and Protection … 23
6.5.1 Protection Painting … 23
6.5.2 Exclusions … 23
6.5.3 Threaded Parts Protection … 23
6.5.4 Support Marking … 23
7
PIPING SUPPORT ASSEMBLY … 23
7.1
Rigid Supports Assembly … 23
7.1.1 Resting Supports … 23
7.1.2 Resting Supports for Process and Utility Lines … 24
7.1.3 U-Bolt Support … 24
7.1.4 Hanger Support … 24
7.1.5 Guides and Stops … 24
7.1.6 Horizontal Pipe Support Span … 24
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
7.1.7 Maximum allowable spans Copper-Nickel piping … 27
7.1.8 Maximum allowable spans for GRE piping (HOLD) … 27
7.1.9 Criteria for guide location … 28
7.1.10 Support solution for Sloped Piping … 29
7.2
Spring type support and Hanger Rod Supports … 29
7.2.1 Hanger Rod -Type Supports … 29
7.2.2 Spring-Type Supports … 30
7.2.3 Assembly General Criteria … 30
7.2.4 Spring Setting … 30
7.2.5 Modification of Set Load… 31
7.3
Adjustment … 31
7.3.1 Mechanical Adjustments … 31
8
8.1
8.2
8.3
8.4
8.5
8.6
9
9.1
9.2
10
SUPPORTS OF PIPING CONNECTED TO EQUIPMENTS… 32
Attachments for Piping Supports on Pressure Vessel … 32
Temporary Supports … 32
GRE Pipe… 32
Pressure Safety Valves … 32
Control Valves… 33
Bracing of Small-Bore Branch … 33
PIPE SUPPORT IDENTIFICATION … 35
Standard Support Tagging … 35
Special Primary Support Tagging… 41
GENERAL NOTES: … 42
10.1
Resting-Type Supports … 43
11
LIST OF STANDARD SUPPORT … 45
11.1
Primary Support List (Attachment-1) … 45
11.2
Secondary Support List (Attachment-2)… 47
12
ATTACHMENTS… 49
Attachment 1 – Standard Supports (Primary Support) … 50
Attachment 2 – Standard Supports (Secondary Support) …154
Attachment 3 – Calculation for Low Temperature Transition to Supporting Structure …268
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
1
INTRODUCTION
The North Field is the world’s largest natural gas field and accounts for nearly all the State of Qatar’s gas production. The principal objective of the NFPS projects is to sustain plateau from existing QatarEnergy LNG Operation – S1, S2, S3, N1 and N2, production areas by implementing an integrated and optimum investment program consisting of subsurface development, pressure drop reduction steps and compression.
NFPS projects comprise 3 main investment programs:
- Investment #1: Drilling and Associated Facilities [WHP12S/ WHP13S/ WHP14S/
WHP12N/ WHP13N]
- Investment #2: Trunk line Looping and Intra-field pipeline looping [32” PL1LN, 32”
PL1LS, 38”PL610LS]
- Investment #3: Compression Complexes and associated facilities [Phase 1 CP6S & CP7S; Phase 2: CP8S & CP4N; Phase 3: CP4S & CP6N Phase 4: CP1S & CP1N]
Drilling and Looping, Investments #1 and #2, projects are in execution phase and are being executed as I1P1, EPCOL Projects except for WHP13N, which will be part of NFPS Compression Projects execution which compromises total up to 9 COMPs.
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 Qatarenergy LNG North Field Production Plateau by installing new RPs and one WHPs to support new Compression Complex facilities CP6S & CP7S and pre-installed facilities for future Compression Complex facilities including but not limited to CP4N & CP8S tie-in 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, brownfield modifications, 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.
Facilities - 1A
• RP5S RP with 2 x 28” CRA clad pipelines to RP7S and 2 subsea composite Cables
and associated J tubes from RP7S to RP5S & from CP7S to WHP13S.
• New Fuel Gas 8” CRA Spur-lines and flanged risers from Subsea skid to RP7S
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
• Hook-up and brownfield modification at WHP5S/RP5S bridge connection & WHP13S/CP7S Composite cable tie-in and E&I integration including RGA Control modification
• Pipeline decommissioning of 28” CS PL5 including associated demolition work at
WHP5S
Facilities - 2A
• RP6N RP with 1x28” CRA clad pipeline to WHP13N, 2 Subsea composite cables and
associated J tubes from WHP12N to RP4N and RP6N to WHP13N. • New fuel gas spur-line and flanged riser from subsea skid to RP6N • WHP13N Topside • Hook-up and brownfield modification at WHP6N/RP6N, RP4N- HPU-Umbilical and tie- in, WHP12N-new J tube installation, E&I migration, WHP6N/RP4N/WHP4N-E&I migration (Pre-CP4N), WHP13N and RP6N interconnection to NFB.
Facilities - 3A
• RP9S RP with 1x28” CRA clad pipeline to RP4S, • Hook-up and brownfield modification at RP4S/WHP9S, Modifications to integrate
RP9S to the RGA control network.
• Pipeline decommissioning of 28” PL9 to WYE on existing 38” trunkline PL49including
associated demolition work at WHP9S.
Facilities - 1B
• New fuel gas spur-line and flanged riser from subsea skid to RP4N • Fiber Optic Cable from RP6N to onshore LFP East, RP6N to RP4N and RP6N to LQ6S. • Hook-up and brownfield modification at RP6N Composite and FO Tie-ins NFB-PU (East)- FO Tie-in
(East)/BVS
Power & Control modifications, LQ6S/LFP Controls/Telecoms Integration
Facilities - 2B
• RP5N RP with 2 x 28” CRA clad pipelines to RP4N, 1 x 28” CRA clad pipeline to RP6N and 2 subsea composite Cables and associated J tubes from WHP12N to RP5N & from RP6N to RP5N.
• Hook-up and brownfield modification at WHP5N- RP5N Bridge connection, WHP12N Composite cable tie-in, RP4N Intrafield pipeline Hook up PL54 N/LN and E&I integration including NFB-PU Power & Control modifications
• Pipeline decommissioning of 2 x 16” PL56/PL54 Subsea Spur line from WHP5N to
reducing barred tee in subsea tie-in skid on PL6 / PL4.
Facilities - 3B
• 2 subsea composite Cables from RP4S to RP9S & from RP4S to WHP12S (with J-
tube)
• New Fuel Gas 8” CRA Spur-lines and flanged risers from Subsea skid to RP4S • Hook-up and brownfield modification at WHP12S/ RP9S/ RP4S Composite cable tie-
in, Spurline riser installation at RP4S RGA Power & Control modifications.
Facilities - 4B
• 1 subsea composite Cable from CP8S to RP11S (or from RP8S to RP11S as Option).
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
• New Fuel Gas 8” CRA Spur-line and flanged riser from Subsea skid to RP8S. • Hook-up and brownfield modification at WHP8S/ WHP11S for Test separator Internal Upgrade and MEG system modification, Spur lines, Power & Control Tie-ins on RP8S, RP11S/WHP11S-Tie-in (Power and Control), RGA Power & Control modifications.
Facilities - 5B
• 2 subsea composite Cables from RT2 to WHP3S & from RT2 to WHP2S (with J-tube)
and FO Cable from RT2 to Barzan WHP1.
• New Fuel Gas 8” CRA Spur-line and flanged riser from Subsea skid to RT2 • Hook-up and brownfield modification at BRZ-WHP1 - FO cable tie-in, WHP2S/ WHP3S/ RT&RT2 Composite cable tie-in and associated modification, RGA Power & Control modifications.
Facilities - 6B
• RP3S RP with 1x24” CRA clad pipeline to RT2 with Stalk on risers, • Hook-up and brownfield modification at RT2 for 24” Intrafield pipeline and Composite/FO cable Hook-up, WHP3S for Production diversion and Utilities, Power and ICSS Hook-up, WHP2S for Composite Cable Tie-ins and Power & Control Integration RGA Power & Control modifications. topside existing and
In-situ abandonment of existing Topside/subsea Composite Cables RT-WHP2S, RT-WHP3S, Topside/Subsea FO cable RT-BRXWHP1.
• Decommissioning at
Figure 1.2.1: NFPS Compression Project COMP3 Scope
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
2 DEFINITIONS AND ABBREVIATIONS
2.1 Definitions
Definition
Description
COMPANY
QatarEnergy LNG.
CONTRACTOR
Saipem S.p.A.
DELIVERABLES
FACILITIES
MILESTONE
PROJECT
SITE
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, manufactured, constructed, supplied, tested and permanently installed by CONTRACTOR at SITE in connection with the NFPS Project as further described in Exhibit 6.
fabricated,
A reference event splitting a PROJECT activity for progress measurement purpose.
COMP3 - NFPS Offshore Riser/Wellhead Platform & Intrafield Pipelines Project
(i) any area where Engineering, Procurement, Fabrication of the FACILITIES 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
Refer to article 2 of CONTRACT AGREEMENT.
WORK PACKAGE
The lowest manageable and convenient level in each WBS subdivision.
VENDOR
The person, group, or organization responsible for the design, manufacture, testing, and load-out/shipping of the Equipment/ Material.
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
2.2 Abbreviations
Code
ASME
BOP
CS
CUNI
GRE
INC
KS
Definition
American Society of Mechanical Engineers
Bottom of Pipe
Carbon Steel
Copper Nickel Alloy Steel
Glass Reinforced Epoxy
Inconel
Killed Carbon Steel
LTCS
Low Temperature Carbon Steel
NPS
PSV
Nominal Pipe Size
Pressure Safety Valve
PTFE
Polytetrafluoroethylene (Teflon)
PWHT
Post Welding Heat Treatment
RF
SBC
Reinforcement
Small Bore Connections
SDSS
Super Duplex Stainless Steel
SPS
SS
TOP
TOS
∆P
Special Pipe Support
Stainless Steel
Top of Pipe
Top of Steel
Pressure Difference
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
3 REGULATIONS, CODES AND STANDARDS
The following codes, standards and specification are referenced within the document shall be considered as part of this specification. 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 and specification effective as on date of contract shall be followed.
In general, the order of precedence shall be followed:
a) Qatari Governmental 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
If CONTRACTOR / SUBCONTRACTOR / VENDOR deems any deviations from the specifications will result in significant project cost and schedule saving, proposal to such deviations shall be submitted to COMPANY for review and approval. CONTRACTOR / SUBCONTRACTOR / VENDOR shall not proceed with any deviation to the specifications without prior COMPANY approval. In general, all design activities shall conform to legal and statutory regulations, and recognized industry best practices.
3.1 Project Documents
S. No
Document Number
Document Title
200-20-CE-SPC-00029 Specification for Thermal Insulation
200-20-CE-SPC-00027
Specification for Fixed Facilities Protective coating for COMP3 Project
200-20-CE-SPC-00028 Specification for Thermally Sprayed Aluminium Coating
200-20-PI-DEC-00010
Piping and Layout Design Basis (Common) for COMP3 Project
200-20-PI-DEC-00011
Piping Stress Analysis Design Basis for COMP3 Project
200-20-PI-SPC-00041
Specification for Spring Supports for COMP3 Project
200-22-ST-DEC-00004
Topside Structural Design Basis (Greenfield) for COMP3 Project
200-20-ST-DEC-00007 Brownfield Structural Design Basis Offshore
200-20-PI-SPC-00044
Piping Material Specification For COMP3 Project
200-20-ST-SPC-00039
Specification For Fabrication and Loadout of Offshore Structures For COMP3 Project
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
S. No
Document Number
Document Title
200-20-PI-SPC-00045
Specification for GRE Pipes, Fittings and Flanges for COMP3 Project
200-20-ST-SPC-00031
Specification for Structural Steel Supports for Pipes for COMP3 Project
3.2 Applicable International Codes and Standards
S. No
Document Number
Title
ASME B31.3
Process Piping (2022)
API RP 2A-WSD
ANSI/MSS SP-58
AWS A 2.4
EN ISO 13920
ISO 14692
Recommended Practice for Planning, Designing and Constructing Fixed offshore production platforms - Working Stress design (22nd Edition 2014)
Pipe Hanger and Supports – Materials, Design, Manufacture, Selection, Application, and Installation (Edition 2018)
Standard symbols for welding, brazing and non-destructive examination (Edition 2020)
Welding –general tolerances for welded constructions- dimensions for lengths and angles–shape and position (2023)
Petroleum and natural gas industries – Glass-reinforced plastics (GRP) piping. (2nd Edition - 2017)
4 PURPOSE OF DOCUMENT
The objective of this document is to define the general criteria to be used for the selection of standard supports based on the allowable loads and piping material to be utilized for COMP3 Execution Project
This specification is applicable to Offshore facilities.
5 GUIDELINE FOR SUPPORT SELECTION
5.1 General Criteria
This document gives the selection criteria and the detailed information for the support’s identification and construction. Piping supporting is the system of supports foreseen in order to maintain within the limits, set in the reference standards, the stresses due to thermal expansion, the piping own
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
weight and any external loads. Pipe support system shall be designed for loads due to expansion, contraction, vibration, relief discharge loads, effect due to weight, pressure, wind loads, slug, surge/water hammer, earthquake, wave and current loads, and other mechanical loading as applicable. Piping support shall be designed for the most stringent combination of loads, including transients, developed during Testing, commissioning, operation and shut down. Standard supports are all support indicated in Attachment 1 and 2. All supports not feasible in accordance with a defined standard, that requiring a proper engineered drawing for the construction and erection are defined as Special Support.
Pipe support to be categorized into 3 categories:
-
All support loads <20kN or support height <2.0m
-
All support loads between 20kN to 50kN, and ≥ 2.0m height
-
Vertical support loads ≥ 50kN and its corresponding horizontal loads.
For category (1) - Piping supports design and location of trimmer beam by Piping Team. However, the trimmer beam design and drawing by Structure.
For category (2) - The pipe support frame will be addressed by piping standard pipe support catalogue. Piping designer will select the appropriate pipe support using the pipe support catalogue. Selected pipe support shall be sent to structural team for review and verification. Structural will confirm that the selection is appropriate using the same pipe support catalogue. If any further recommendation of adding trimmer beam and stiffeners shall be by Structure.
For category (3) - This support shall be treated as special pipe support (SPS) and will be entirely designed and modeled by the structural team, including the pipe support framing.
5.1.1 Access for Corrosion Monitoring
Supports in marine atmosphere shall be designed to avoid potential corrosion built-up. A barrier is necessary between the pipe and metallic surface of the support.
Lines shall not directly rest on supporting structure. Isolation pad is required for all piping resting directly to structure to minimize galvanic/crevice corrosion. Lines shall be supported as per Table 10.1 to raise piping from supporting structure allow for inspection and paint maintenance.
5.2 Unit of Measurement
The unit of measurement indicated in the documents issued for the activities in question are:
Pressure
bar(g)
Force
daN (the value given in the tables multiplied by 10 expresses the force in N)
Moment
daNm (the value given in the tables multiplied by 10 expresses the moment in Nm)
Dimensions mm (unless noted otherwise)
Pipe Diameter Inches
Temperature °C
Stress
Mpa
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
5.3 Allowable Loads on Piping and Support Components
The maximum allowable loads on Standard Supports could be different depending on if the Supports are in direct contact with the pipe or not. The support allowable loads indicated in this standard are valid for design temperatures ≤150°C.
For higher temperatures (design temperatures >150°C) the allowable loads will be reduced taking into account the allowable stress of pipe design temperature, applying the formula given in Sec. 5.3.1. Where Sh denotes allowable stress of pipe material at applicable design temperature.
The minimum piping thickness indicated in the support’s standard has to be considered as the corroded thickness, which is the nominal thickness indicated in the piping line specification decreased by the corrosion allowance.
When the standard to be utilized provides for a limit of use also as a function of the piping rating, the standard shall be selected based on both the indicated limits of allowable loads and rating.
5.3.1 Allowable Loads for Supports Directly in Contact with Pipe
For the support in contact with the pipe, in the relevant Loads table, three columns are shown in addition to the NPS one: Minimum Pipe Thickness, Nominal Load and Maximum Load.
The maximum allowable load on standard support directly in contact with the pipe has to be defined as a function of both pipe thickness and pipe design temperature, applying the following formula:
Pall = Pnom x (Sh / S150) x (tc / tmin) 1.5
Where:
• Pall
= allowable load
• Pnom = nominal load indicated in the standard tables (as per indicated in each Standard
Pipe Support Drawing)
• Sh
= allowable stress of pipe material at design temperature
• S150 = allowable stress of pipe material at temperature ≤150°C
•
•
tc
= pipe corroded thickness (nominal pipe thickness less corrosion allowance)
tmin = minimum thickness indicated in the standard tables.
When the allowable load calculated as above (Pall) is higher than the max load indicated in the table (Pmax), the latter will be utilized as allowable load.
5.3.2 Application of Standard Supports for Loads Higher than Maximum Allowable
It is not permitted the utilization of standard supports for loads higher than the max allowable ones (Pmax) indicated in the standards.
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
5.3.3 Allowable Load for Secondary Supports (Portals, Post, etc.)
The allowable load on secondary supports is indicated in load table for each standard secondary support drawing (Attachment-2). 30% of the allowable vertical load shall be considered as allowable horizontal (axial and lateral) load.
5.3.4 Support Sizing Based on Materials Mechanical Characteristics
Supports have been designed based on materials mechanical characteristics shown in Table 5.1
COMPONENT TYPE
Minimum Yield Strength (MPa) Material type
Carbon steel
Low Temp. Carbon steel
Alloy steel
Stainless steel
Minimum Tensile Strength (MPa) Material type Low Temp. Carbon steel
Alloy steel
Carbon steel
Stainless steel
Plates, rods, washers
Shapes
Bolts & nuts
Pipes
250
250
520
250
220
210
210
520
220
650
210
210
210
400
400
690
410
410
410
520
690
410
760
410
520
520
Table 5.1: Mechanical characteristic of Support Materials.
5.4 Post and Portals
5.4.1 Support Sizing Based on Selection of Standard for Posts and Portal
The selection of standards for posts and portals must be executed considering the suitability of the selected support dimensions and the dimensions of any structure to which it is connected.
5.4.2 Support Connected to Structure
When support is connected to a structure, it is necessary to verify that the connection does not cause torsion stress to the same structure by providing adequate connection elements if necessary.
Structural team shall verify the support loads 20kN to 50kN and shall confirm the pipe support portal size as per the Piping Support Standard Specification (Common) for COMP3 Project. Structural team shall further verify the secondary beam size and the requirement of stiffener / wing plates and shall be included in structural designed pipe support.
In order to accommodate within standard pipe support design, the pipe supports with height greater than 2.0m and pipe support configuration that is indicated in Attachment 1 and 2 shall be reviewed and verified by structural team to confirm the configuration and support member size.
For COMP3 Supports connected to existing Brownfield structures, Structural to verify the adequacy of the existing supporting structure.
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5.4.3 Special Pipe Support (SPS)
All pipe supports with load outside the allowable load/height of this Standard, shall be design verified by Structural. This support shall be identified as special pipe support (SPS). The SPS details shall be as per section 5.9.
Pipe support load above 50KN for vertical force and its corresponding horizontal force shall be treated as special pipe support and shall be designed by Structural.
5.5 Material of Support Components
The material of Primary support components has been defined in relation with the supported piping material and the design temperature of the same, as shown in the tables here follows shown in (Table 5.2). The material of supports in direct contact or welded to the pipe such as reinforced pads, welded shoes, shall be the same of pipe. In case of Inconel pipe with clamped shoe, the clamp and shoe material of stainless steel is allowed by inserting isolating barrier between clamp and pipe.
Generally, the material of supports not in direct contact to the pipe such as shoe welded on reinforced pad, shall be the same as that of pipe material. Wherever the reinforcement pad is applicable for the Inconel material, those shoes shall be allowed to weld with stainless steel material.
The reinforced pads shall be welded in the shop. Vent holes on RF pad will be plugged with sealant silicone mastic.
Table 5.2: Selection Criteria of Supports Materials
SUPPORT TYPE
PIPING MATERIAL
PIPING DESIGN TEMPERATURE
SUPPORT MATERIAL
REINFORCING PAD /PIPE SHOE / SADDLE
PWHT REQUIREMENT
Carbon Steel
≥ -29°C
Reinforcing plates and connections to pipe
Low Temperature Carbon Steel Stainless steel 18 Cr/8 Ni
←29°C to ≥ -46°C
Same as pipe or equivalent
< -46 °C
See para. 5.7
Incoloy / Inconel
< -46 °C
Carbon Steel
≥ -29 °C
Same as pipe or equivalent
Shoes and saddles
Low Temperature Carbon Steel Stainless steel 18 Cr/8 Ni
←29°C to ≥ -46°C
Same as pipe or equivalent
< -46 °C
See para. 5.7
Clamped supports and bolted to pipe
Incoloy / Inconel
< -46 °C
Low Temperature Carbon Steel Stainless steel 18 Cr/8 Ni
←29°C to ≥ -46°C
< -46 °C
Incoloy / Inconel
< -46 °C
Same as pipe or equivalent
Same as pipe or equivalent
Same as pipe or equivalent
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Piping supports materials (in direct contact with or welded to pipe) shall be selected accordingly for those listed in ASME B31.3 or equivalent codes. Piping supports materials shall not be used at temperatures that are not recommended by design codes.
Material usually utilized for support (in direct contact with or welded to pipe) fabrication are shown in Table 5.3
Table 5.3: Prefabrication of Steel Supports for Piping
Notes:
-
NA denote NOT APPLICABLE.
-
Equivalent material requirement with respect to ASTM or API specification are allowed, if the chemical composition, mechanical properties, and heat treatment requirement are satisfied.
Piping U-BOLT material shall be as per table 5.4
Table 5.4: Selection Criteria of Supports Materials for U-Bolt
SUPPORT TYPE
PIPING MATERIAL
SUPPORT MATERIAL
U-BOLT ROD
NUT
U-BOLT
Carbon steel Stainless steel Inconel - Incoloy Cu-Ni
A193 GR.B7
A194 GR.2H
Low Temp. Carbon Steel ASTM A320 Gr.L7 ASTM A194 Gr. 7
Note:
- Refer section 7.1.3.
Remark
All U-bolt shall be with insulating sleeve (Polyolefin) and non- metallic isolator pad (PTFE)
When the support is made of carbon steel the material identifying code will not be indicated in the support marking. When the support or some of its components are in material different from the carbon steel, the material type will be indicated in the support marking according to the coding rules given in each standard.
5.5.1 Isolating Barrier (Neoprene Pad)
The specification of insulating rubber shall meet the following requirement.
- Black color
- Density < 1.25 Kg / dm3
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- Shore hardness A70 +/-5 (ASTM D2240)
- Compressive permanent deformation 25% to 35% (max) (ASTM D395)
- Ultimate tensile stress 6.0 Mpa (min) to 9.8 Mpa (ASTM D412, test strip I)
- Ultimate elongation 250 % to 350% (ASTM D412, test strip I)
- Insulating rubber shall be suitable for 1000C, and unaffected by UV rays, offshore marine
environments, and contact with grease or oil during the design life.
Reference: ASTM D2000 or equivalent.
5.5.2 Welding between CS and SS
Welding between carbon steel and stainless steel is allowed for pipes with temperature greater than
-46°C. Inside this range of negative temperature it is allowed to weld shoes and saddles of carbon steel on reinforcing pads of stainless steel.
Welding of dissimilar metals will follow the requirement of an approved dissimilar metal welding procedure.
5.6 Special Cases of Supports Selection
5.6.1 Shoes and Saddles Support
Shoes and support saddles are standardized in two lengths: “normal” and “long”, to be selected as a function of axial thermal displacement of piping.
For the pipes having minimum upset conditions < -29°C Shoe/Saddle shall be provided to avoid low temperature transition on platform structure.
For pipe with wall thickness schedule above Sch 20 pipe shoe to be provided without reinforcing pad or as recommended in the AIV/FIV study. Saddles to be provided for pipes having wall thickness schedule equal or less than Sch 20.
Standard Shoe/saddle height is 100mm, shoe height shall be incremented with respect to insulation thickness. This height is adequate to avoid low temperature transition on supporting structure for the minimum upset temperature of -100°C. Refer Attachment-3 for detail calculation.
5.7 Selection Criteria for Piping with Post Welding Heat Treatment (PWHT)
For supports welded to pipes for which a PWHT has been foreseen, the supports with reinforcing plates shall be utilized, this because the plate could be welded during the piping prefabrication, thus avoiding subsequent heat treatments during the erection in field.
5.8 Standard Supports Identification
5.8.1 Identification Code
The standard supports are identified by an alphabetical code, which defines the function as indicated in the following paragraph, followed by a numerical sequential code, which indicates the support sequence in this standard (Attachment 1 & 2).
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5.8.2 Alphabetic codes identifying the function
A
B
F
G
H
J
K
L
M
N
P
S
T
U
V
W
X
Y
ANCHOR
BASE SUPPORT
FIX
GUIDE
HANGER
ADDITIONAL MISCELLANEOUS
FLANGE SUPPORT
LOW FRICTION
MISCELLANEOUS
NOSE
PORTAL
SADDLE
GUSSET
U-BOLT
VERTICAL
HOLD DOWN
OTHER
GRE/GRP
The standard support list and the piping support standard drawings are detailed in attachment 1 & 2.
Example of tag table with identifying codes of piping supports including complete of main dimensions is available on every standard drawing. Support will be normally represented on plant 3D model, thus obtaining the piping arrangement drawings and the isometrics which also contain the information necessary for the support installation.
5.9 Special Supports Drawings
The special supports are identified with tag “SPS”, a dedicated drawing complete with all the components and dimensions necessary for the construction and any indication useful for the erection, will be carried out for all special supports.
For example, for the special support drawings, the following information will be indicated:
a) Drawing title block, where the support identifying code will be shown in the title
according to the following criteria:
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SPS-P/V-XXXX
where:
SPS
Indicates Special Pipe Secondary Support
P/V Support
Indicates Secondary Pipe Support Type P is Portal ,V is Valve
XXXX
is the sequential number of the special support
Example for Secondary SPS-P-2006
b) the in scale graphic representation of support, complete with all the components and dimensions necessary for the construction and any indication useful for the erection.
c) position and dimensions of field welds, if present, with symbols to be represented
according to the AWS-A2.4 code.
d) materials list for the prefabrication of represented components, indicated according to
following chapter - 5.9.1
e)
line number and geographical reference respect to a structure element will be indicated when the special support is valid for this position only.
f) Special pipe supports tag shall be indicated on the piping isometric drawings.
5.9.1 Support Piping Classes
The “Support piping class” will be defined according to the project “Piping Classes”, referring to the following table. It defines the support material in relation of piping material, pipe temperature and the position of support components from the pipe. Support piping class is the Code through which the material of each support component is identified.
Table 5.5: Support Piping Classes
SUPPORT PIPING CLASS
PIPE MATERIAL DESCRIPTION AS PER “PIPING CLASS”
CS
KS
SS
INC
CUNI
SDSS
Carbon Steel (T≥ -29 °C)
Killed Carbon Steel (T≥ -46 °C)
Stainless Steel (T≥ -32 °C)
Incoloy / Inconel (T≥ -100 °C)
Cu-Ni (T≥ 0 °C)
Super Duplex (T≥ -46 °C)
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5.10 Special Items Support
The material of each component is defined according to table 5.3.
The supporting special items are the support devices defined and procured with the project technical specifications. This type of items includes constant springs. The identification of these special items will be done by using an identified below code:
CS
CONSTANT LOAD SPRING
Requirement for spring support shall be according to Specification for Spring Supports for COMP3 Project Doc. No 200-20-PI-SPC-00041.
5.11 Use of Elbow / Dummy Trunnion
Use of Elbow / Dummy trunnion is prohibited in any scenario. SDR for Elbow /DummyTrunnion shall not be raised.
6 CONSTRUCTION REQUIREMENTS
6.1 Characteristics of Supports to be Fabricated
All the supports to be fabricated are listed in a dedicated document. The standard and special supports are fabricated with the related base materials and the required quantity for each type, indicated in accordance with the reference dimensional codes. The construction will be carried out by utilizing the detailed drawings referred to the standard support.
6.1.1 Excluded Supports from Fabrication
The following types of supports must be considered not included in the fabrication and supply scope:
• Spring supports
• Hydraulic shock absorbers
• PTFE and/or lubricated graphite plates
• Chemical or mechanical anchor bolts
• U-Bolts
• Clevis
6.1.2 Requirements for Clamped Supports
Clamp Support shall be followed for Cu-Ni and GRE piping. For brownfield facilities, any existing line requiring additional support shall be a special clamp support.
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6.2 Tolerances
Manufacturing tolerances will be within the limits of EN ISO 13920: Class A for lengths and angles, Class E for shape and position.
6.3 Plate Forming
If steel plate is cold formed to a centerline radius less than twice its thickness, it shall be annealed or normalized after forming.
6.4 Welding
6.4.1 Weld Symbols
Weld symbols indicated in the drawings are in accordance with AWS A 2.4.
For the pipe support attachments (pad/shoe), the minimum Distance between two consecutive welds (pipe support weld to other pipe support weld, girth weld or branch connection) shall not be less than 50mm as per Piping and Layout Design Basis (Common) for COMP3 Project, Doc No. 200-20-PI- DEC-00010.
6.4.2 Fillet Weld Thickness
Fillet throat thickness shall be 0.7t where t is the thickness of the smaller of the 2 members to be welded, unless otherwise stated. Special attention will be taken care during welding when piping thickness is less than 5mm.
6.4.3 Corrosion Prevention
Welds of face-to-face members will be of seal weld type, to avoid corrosion phenomena due to humidity penetration, Vent holes will be plugged with sealant silicone mastic suitable for high temperature.
6.4.4 Post Weld Heat Treatment
In all cases where it is envisaged that the support is welded to pipe and Post Weld Heat Treatment (PWHT) is required for this weld, the following procedure shall be followed:
• Weld the support or, when requested, the reinforcing or protection plate to the pipe.
• Perform the post weld heat treatment.
• When the line subject to PWHT, support RF pad shall be welded to the pipe before PWHT.
6.4.5 Hot-Dip-Galvanized
All spring supports shall be hot dip galvanized, except the spring coil shall be coated with thermoplastic powder technology coating (i.e Plascoat PPA571 or equivalent/superior method ) for corrosion protection.
Welding of galvanized steel to stainless steel piping is not permitted. Galvanized steel (e.g., pipe clamps) shall not be in direct contact with stainless steel piping.
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6.5 Painting and Protection
6.5.1 Protection Painting
All supports in carbon and alloy steel shall be protected in accordance to the Specification for Fixed Facilities Protective coating for COMP3 Project (Doc. No. 200-20-CE-SPC-00027) & Specification for Thermally Sprayed Aluminium Coating (Doc. No. 200-20-CE-SPC-00028). Furthermore, the supports for which assembly welds are not foreseen (e.g. clamped type supports), shall be also painted with the finishing coats defined in the above specification.
6.5.2 Exclusions
The following parts shall be excluded from painting:
a. Threaded parts.
b. Identification tags of spring supports.
6.5.3 Threaded Parts Protection
During and after assembly the supports threaded parts shall be protected with mineral grease or equivalent or higher material grade.
.
6.5.4 Support Marking
The marking will be according to the coding rules given in the relevant detail drawing. On each prefabricated support the relevant marking will be applied through painting or punching.
The elements having small dimensions and mass less than 1 Kg, for which it is difficult the marking due to the small dimensions, will be grouped together in disposable containers and these containers will be marked as indicated in the detail drawing.
At the end of fabrication all markings shall easily readable.
7 PIPING SUPPORT ASSEMBLY
7.1 Rigid Supports Assembly
Supports are to be designed taking into account the thermal expansion phenomena and stresses of each piping system and equipment.
7.1.1 Resting Supports
Resting supports shall never restrain the line displacement on horizontal plane. Any present obstacle (such as: tack welds, temporary supports used for assembly, etc..) shall be removed before the mechanical completion. The piping supports on structures shall rest evenly on the bearing structure. When this does not occur, it shall be necessary to insert and weld to structure shimming plates, which shall in any case permit the horizontal movements of piping.
Supports on flange body using brackets or plates shall be avoided. Exception is non-metallic piping (GRE), where typically, flanged valves (or other online heavy piping component) are supported on
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flanged body. This shall be referred to Specification for GRE Pipes, Fittings and Flanges for COMP3 Project (200-20-PI-SPC-00045).
7.1.2 Resting Supports for Process and Utility Lines
For insulated lines pipe shoes or saddles shall be used. In any circumstances uninsulated lines shall not rest directly on the steel structure. A 10 mm PTFE (Neoprene) isolation pad shall be used to avoid steel-steel contact.The neoprene pad is provided with countersunk screws.
Sloped piping shall be supported as per section 7.1.10.
7.1.3 U-Bolt Support
The use of U-bolts supports shall normally be restricted to application where the lateral load is minimal. U-bolts shall not be used as a load bearing supporting member
U-bolts shall only be used :
-
for process lines 3” and below if minimum design temperature is ≥ -29°C & ≤ 150 °C
-
for utility piping lines generally 3” and below where only small lateral loads are expected.
-Immediate after the downstream of the normally closed valves.
7.1.4 Hanger Support
Hanger supports to be tensioned at the same time as the assembly of the support. This operation shall be carried out in such way as to avoid excessive loads that may cause piping deformation and/or overloads on the equipment connected to the interested piping.
7.1.5 Guides and Stops
Unless otherwise indicated on support project drawings, guides and stops shall be installed leaving a 2 mm gap on each side between pipe and guide or between stop and bearing structure. When after assembly completion, the support shows gaps not in accordance with the above-mentioned values or the envisaged by project, adjustments shall be made so as to bring back the gap to the foreseen values.
7.1.6 Horizontal Pipe Support Span
The support span shall provide maximum distance between supports not higher than those shown in the following table, according to the materials and temperatures.
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Table 7.1: Maximum Allowable Material Spans for Metallic Piping
**for pipe size 0.5”, pipe span is equal to pipe size 0.75”
NOTES
- The spans indicated in the tables of this APPENDIX have been obtained in accordance with
the following formula and assumptions:
L =
Sh W e 125 q
Where:
span [m]
• L= • Sh= allowable stress according to ASME B31.3 [N/mm2] • W= • q= • e=
section Modulus [mm3] unitary weight [N/m] reduction coefficient: 3 for pipes containing liquid with density =1000 kg/m3 3,3 for pipes containing gas or vapor
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GASLIQUIDGASLIQUIDCS/INCCS/INCSSSS(inches)(mm)L (m)L (m)(mm)L (m)L (m)0.752.113.503.253.913.253.0012.773.903.504.553.753.501.52.774.754.255.084.504.2522.775.254.755.545.004.7533.056.505.507.626.256.7543.057.006.003.057.256.0063.48.507.003.48.757.0083.7610.008.003.7610.007.75104.1911.008.754.1911.258.75124.5712.009.254.5712.259.25144.7812.509.504.7813.009.25164.7813.0010.254.7813.7510.25184.7813.7510.504.7814.7510.50205.5414.5011.005.5415.5011.25246.3515.7512.006.3517.0012.002612.716.5014.0012.717.5514.002812.717.0014.5012.718.2514.503012.717.7514.5012.719.0014.753212.718.0015.2512.719.5015.253812.719.2515.7512.720.7515.754612.719.5015.7512.720.7515.75NOMINAL THICKNESSNOMINAL THICKNESSPIPING MATERIAL FOR TEMPERATURE ⇐200°CNPS
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a) straight pipe resting on more than two supports. b) max allowable stress at design temperature according to ASME B31.3 (Sh). c) reduction factor for Sh equal to 0,3 d) pipe, content and insulation (if any) weight. e) pipe wall thickness as mentioned in above table. f) pipe maximum deflection
8 mm for NPS < 2” 19 mm for NPS ≥2”
Recommended span for offset shapes, L= Span from Table 7.1.
- The max deflection of pipe supported with the previously calculated span will be verified with
the following formula:
q L4
f =
185 E I 103
Where:
• f= deflection [mm] • L= span length [m] • E= Young Modulus [N/mm2] I= Moment of inertia [mm4] •
In case of concentrated loads on the pipes, like valves or supports for the adjacent pipes, the maximum span indicated in the table or calculated with the formulas above reported, will be verified on the basis of above said concentrated loads.
The above formula could be applied to define the relevant span for pipes outside the above assumption.
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7.1.7 Maximum allowable spans Copper-Nickel piping
Table 7.2 Maximum allowable spans Copper-Nickel Piping
NPS
(inches)
1
2
4
6
8
10 and above
DN
(mm)
25
50
100
150
200
250
NOMINAL THICKNESS
MAXIMUM SPAN
(mm)
2.5
2.5
3.0
3.0
4.0
4.5
L (mm)
2000
2750
3650
4550
5100
6050
The spans indicated in the table of this followed as per the Copper – Nickel vendor recommendation. Based on CDA (Copper Development Association) Application datasheet Table.7
In case of concentrated loads on the pipes, like valves or supports for adjacent pipes, the maximum span indicated in the table will be verified on the basis of the above said concentrated load.
Recommended span for offset shapes, L= Span from Table 7.2
7.1.8 Maximum allowable spans for GRE piping (HOLD)
The spanning capability of GRE piping spans is generally less than that for steel pipe, due to the lower modulus of the material. Supports shall be spaced to avoid sagging and/or excessive vibration for the design life of the piping system.
As per GRE Vendor data, filled GRE pipes should be capable of spanning at least the distances specified in Table 7.3 while meeting the deflection criterion of 0.5% of span or 12.5mm center, whichever is smaller.
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Table 7.3: Guidance to span lengths
Size NB (Inch)
1” 1 ½” 2” 3” 4” 6” 8” 10” 12” 14” 16” 18” 20” 24” >
Support Span (m) 2.0 2.4 2.6 2.9 3.1 3.5 3.7 4.0 4.2 4.8 4.8 4.8 5.5 6.0
7.1.9 Criteria for guide location
NPS L (m) L1 (m)
2”–3” 3-4 6
Table 7.5 Guide spacing 8”-14” 12-16 14
4”-6” 6-8 8
B (m)
Note 2
Note 2
Note 2
≥16” 12-16 From stress analysis calculation Note 2
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Notes:
“L1” is the minimum length necessary to permit the piping maximum thermal expansion of 120 mm.
“B” is the dimension of loop as defined by stress analysis calculation.
For piping on pipe-rack or pipe-way, which usually have spans of 6 or 8 meters, the guides are realized on each alignment for NPS up to 6” and on alternate alignment for NPS > 6”. In this case it is suggest locating the guides on the odd alignments, if possible, to make easier the calculation, the construction, and the controls.
7.1.10 Support solution for Sloped Piping
Sloped piping will be supported with variable height shimming, welded to the structure, and located under the shoe, saddle or pipe. In order to minimize and optimize the shimming height, standard shoes and saddles with variable heights will be used with height of: 100, 150 and 200 mm.
7.2 Spring type support and Hanger Rod Supports
7.2.1 Hanger Rod -Type Supports
Hanging-type supports (hangers) shall be used only at locations where it is not possible to install resting-type supports and with consideration of the following:
-
In case of utilizing pipe hangers, horizontal thermal pipe movement shall be within an angle of ±4⁰ off the vertical axis during operating condition to avoid instability of piping supports.
-
Rod hangers shall be subjected to tensile loading only. The load on hanger rod shall be
within allowable limit of rod material.
- When used, the need for emergency support beams or fireproofing of supports and rods
shall be evaluated.
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7.2.2 Spring-Type Supports
Variable and constant spring supports shall be preset by Manufacturer. They shall be provided with limit stops that preset the spring to the installed (cold) load.
Spring hangers shall be used only when advised by the Piping Stress Engineer. Spring hangers should not be considered as a solution when the predicted spring travel from the installed to operating deflection is 5mm or lower except on sensitive equipment.
All spring supports shall be hot dip galvanized, except the spring coil shall be protected against offshore saliferous corrosive environment by means of passivation treatments or thermoplastic powder technology coating (i.e.: Plascoat PPA 571 or equivalent/superior method). Springs with these systems are acceptable for use. Supports shall be provided with a position indicator and load scale marked with the installed and operating loads. The selection of spring supports shall be based on operating conditions.
7.2.3 Assembly General Criteria
Every spring support shall be installed in the position and on the piping indicated on the isometric drawings issued for the project.
Therefore, the item number indicated on support tag shall correspond to the one indicated on the isometric drawing of the interested piping line.
During assembly, the spring supports shall be positioned in such a way that the identification tag is visible and on the most accessible side of the support.
Spring supports shall be as per Specification for Spring Supports for COMP3 Project doc no 200- 20-PI-SPC-00041.
For spring hanger supports, the tie rod of the support shall be tensioned by adjusting the turnbuckle installed in the tie rod itself. This operation shall occur at the same time as the assembly of the support, without referring to the setting operation that will be carried out in accordance to modalities and timing indicated in the following chapter.
Tie rods shall be locked in their proper position before testing, and re-adjusted as necessary after testing in accordance with the installation instructions
The length of the spring supports tie rods shall be adjusted on erection, using when necessary, the threaded rods and rod coupling supplied as spare together with the spring supports.The connection between the rod coupling and tie-rods shall be made as follows:
• Screw the tie-rod up to the middle of the rod coupling.
• Tighten the lock nuts to the ends of the rod coupling.
• Fasten the lock nuts to the coupling with a tack weld, to avoid unscrewing.
7.2.4 Spring Setting
Springs are supplied already calibrated for the installation load in accordance with the relevant project specifications. The set load is maintained by stops made of locking pins or nuts and lock nuts blocked on threaded rods, or by other similar systems. In order for the support to come into operation, it is necessary to remove said stops in accordance with the procedure indicated in supplier manual and during the following assembly phases:
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
a) after the hydrostatic test in the case of spring supports installed on piping for which such
a test is required.
b) after the hydrostatic test but before steam-out for spring supports installed on piping for
which steam-out is envisaged.
c) either before or after the pneumatic test for spring supports installed on piping for which
only a pneumatic test is envisaged.
In any case the removal of said stops will be always carried out with the line connected to equipment nozzles and before the plant start-up operations that cause the reaching of piping operating conditions.
The characteristics of each spring support, such as the operating load and the working travel, shall comply with the results of stress analysis calculations.
To indicate the spring supports characteristics, both of variable load and constant load type, the data sheets shall be completely filled in and issued as project documents.
7.2.5 Modification of Set Load
When a modification of set load is required due to a line variation and the following stress analysis checks by Piping the modification will be performed following the percentages and procedures indicated in vendor’s catalogue and in the written instructions given by Piping.
7.3 Adjustment
7.3.1 Mechanical Adjustments
In the cases where the components of a support to be welded at the erection are supplied with a standard length higher than the available space, they shall be properly cut and assembled. The ends of support extensions to be adapted at installation shall be beveled for butt welding during erection.
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
8 SUPPORTS OF PIPING CONNECTED TO EQUIPMENTS
8.1 Attachments for Piping Supports on Pressure Vessel
The location of attachments and plates on courses welding shall be avoided, for this reason it is necessary to verify their location with the courses layout made available from Manufacturers, and agree any displacements deemed necessary. Priority must be given for the information on attachments and plates to all vessels for which the final heat treatments foreseen to be done by the Manufacturer, as no further welding can be carried out after this construction phase.
8.2 Temporary Supports
Temporary support shall be minimized as much as possible. If temporary support is required, it shall be installed in accordance with the following instruction;
When temporary supports are necessary their choice and management will be carried out using the same modalities of permanent supports. Temporary supports are only to be used for load conditions encountered during erection, transportation, pressure testing, long term maintenance and repairs. Temporary supports (shoe/pad) for piping will always be of clamped type, while portals and posts will be realized with welded / bolted connections to facilitate their dismantling and removal. Holes on deck or structure shall be sealed to avoid corrosion issues. All temporary supports shall have a different painted color to the permanent supports. Furthermore, on the piping isometric drawings where they are shown the following note will be added: SUPPORT TO BE REMOVED AFTER COMPLETE OFFSHORE COMMISSIONING AND BEFORE PLANT START-UP.
8.3 GRE Pipe
Horizontal pipe should be supported as per support spacing recommended by GRE Vendor.
Support selections for GRE lines shall be as per the below listed GRE Vendor documents.
Document number
200-20-PI-SPC-00045
Document Title Specification for GRE Pipes, Fittings and Flanges for COMP3 Project
Heavy equipment (valves etc.) must be supported independently from the pipe to avoid overloading in both horizontal and vertical directions.
Excessive loading in vertical runs shall be avoided.
8.4 Pressure Safety Valves
Outlet line of Pressure Safety Valve (PSV) shall be restraint in order to withstand the reaction force for open and close systems. The dimension of support depends on the magnitude of the reaction force.
For more information about direction of forces, refer Piping and Layout Design Basis (Common) for COMP3 Project (Doc. No. 200-20-PI-DEC-00011).
Typical support configurations for open and close systems are shown in the following figure.
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
8.5 Control Valves
Control valve groups and by-pass, when located at grade adjacent to rack columns or other structures will be normally supported from grade to avoid additional loads not foreseen during the structural design. The use of spring supports at ground is to be minimized for the cases when no other solution is possible, by verifying the option of relocating the group. Gusset shall be provided up to 6m downstream control valve with ΔP>15 bar. The gusset material will be the same as or equivalent to the header material where the branch connection is positioned, unless otherwise indicated. Usually, valve’s groups shall be restrained in both directions lateral and axial using guides and axial stops. When the arrangement of the valves is horizontal at least three rest supports should be used to sustain their weight. Typical configurations to supporting control valve as per stress engineer recommendation shall be followed as shown in the following figures.
8.6 Bracing of Small-Bore Branch
Branch connections on piping subject to induced vibrations like mixed phase lines, dual-phase fluids, dynamic events shall be provided with small-bore bracing as per below requirements.
Small bore bracing shall be mandatory at these locations:
- For metallic piping in hydrocarbon and cooling medium service, all small-bore (2” and below) welded branch connection e.g olets & flangeolets, on pipe runs 2” and greater that contain a valve, instrument, heavy mass (dBB) or have complex geometry. (e.g. vents, drains, pressure/temperature connections, chemical injection/sampling, orifice assemblies etc.)
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
- For all hydrocarbon service, small bore connections shall be braced in two directions (by
default) and shall be properly welded type.
- For metallic piping in hydrocarbon service that are identified in the AIV/FIV report, same shall
applied.
-
Based on identification by stress engineer if any.
-
Note, small bore bracing shall only be required where a vent valve is to be permanently
installed.
- Gusset support shall be provided to all piping branches NPS 2 and smaller to avoid any form
of vibration, resulting from AIV / FIV, slug force, surge force, cyclic loads etc.
- Generally welded gusset supports shall be used, clamped gusset support shall be used
based on requirement (eg.CUNI piping, dissimilar material etc.)
Small bore 2-plane bracing support is subjected to Small Bore Connections assesment irrespective of AIV/FIV assesment process lines 2” and below socket welded branch connections shall be provided with 2-plane bracing support. Support type T2 is attached for reference below.
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
9 PIPE SUPPORT IDENTIFICATION
9.1 Standard Support Tagging
All supports shall be identified by a pipe support tag number. Pipe support tagging shall be as per below:
Table 9.1: Secondary Support Tagging
A
B
XXXX
Where:
A: System & Facilities Number, i.e.,
Scope Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Greenfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield Brownfield
Platform code RP5S BR5S-1 BR5S-2 BSP5S-1 RP6N BR6N-1 RP9S BR9S-1 WHP13N RP3S BR3S-1 BR3S-2 BSP3S-1 RP5N BR5N-1 RP4S RP7S WHP5S WHP6N WHP9S RP4N RP8S RT2 WHP11S WHP3S WHP4N WHP5N WHP8S
System & Facility Number
240-R5S 241-B5S 244-B-5S 239-B5S 268-R6N 269-B6N 235-R9S 236-B9A 265-W13N 212-R3S 213-B3S 217-B3S 218-B3S 278-R5N 279-B5N 223-R4S 228-R7S 999-W5S 33-W6N 999-W9S 263-R4N 270-R8S 210-RT2 999-W11S 999-W3S 31-W4N 32-W5N 999-W8S
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
B: Pipe Support Tag according to attachment to deck level, i.e., PS07 for pipe support Below Discharge Cooler Platform
XXXX: Sequence numbering
Note: Primary support tagging shall be followed as per the Attachment 1 Example: S5-100-750-16-CS (for S5 support drawing)
Greenfield Well Head Platform-WHP13N, eg: 265-W13N-PS12-1001
LEVEL
EL (+) 37.13m – Above Boom Tip Maintenance Platform.
EL (+) 37.13m – Below Boom Tip Maintenance Platform.
EL (+) 31.0m – Below Helideck.
EL (+) 25.9m – Above Drill Deck.
EL (+) 25.9m – Below Drill Deck.
EL (+) 19.35m – Above Mezzanine Deck.
EL (+) 19.35m – Below Mezzanine Deck.
EL (+) 16.35m – Above Production Deck
EL (+) 16.35 m – Below Production Deck
EL (+) 11.0m - Above Cellar Deck
EL (+) 11.0 m – Below Cellar Deck
EL (+) 6.83 m – Above Top of Jacket
Riser Platform RP9S, eg: 235-R9S-PS02-2001 ,
LEVEL
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Cellar Deck
EL (+) 10.0 m – Below Cellar Deck
EL (+) 6.83 m – Above Top of Jacket
Riser Platform RP5S, eg: 240-R5S-PS12-0001,
PLATFORM, LEVEL AND SEQUENCE NUMBERING 265-W13N -PS14-XXXX
265-W13N -PS13-XXXX
265-W13N -PS12-XXXX
265-W13N -PS11-XXXX
265-W13N -PS10-XXXX
265-W13N -PS07-XXXX
265-W13N -PS06-XXXX
265-W13N -PS05-XXXX
265-W13N -PS04-XXXX
265-W13N -PS03-XXXX
265-W13N -PS02-XXXX
265-W13N -PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 235-R9S-PS07-XXXX
235-R9S -PS06-XXXX
235-R9S -PS05-XXXX
235-R9S -PS04-XXXX
235-R9S -PS03-XXXX
235-R9S -PS02-XXXX
235-R9S -PS01-XXXX
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
LEVEL
EL (+) 31.60m – Below Helideck
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Cellar Deck
EL (+) 10.0 m – Below Cellar Deck
EL (+) 6.83 m – Above Top of Jacket
Riser Platform RP6N, eg: 268-R6N-PS12-0001
LEVEL
EL (+) 33.00m – Above Boom Tip Maintenance Platform. EL (+) 33.00m – Below Boom Tip Maintenance Platform. EL (+) 31.50m – Below Helideck
EL (+) 34.00m – Above Piping Platform.
EL (+) 34.00m – Below Piping Platform.
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Cellar Deck
EL (+) 10.0 m – Below Cellar Deck
EL (+) 6.950 m – Above Top of Jacket
Riser Platform RP3S, eg: 212-R3S-PS12-0001
LEVEL
EL (+) 31.60m – Below Helideck
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
PLATFORM, LEVEL AND SEQUENCE NUMBERING 240-R5S-PS08-XXXX
240-R5S-PS07-XXXX
240-R5S-PS06-XXXX
240-R5S-PS05-XXXX
240-R5S-PS04-XXXX
240-R5S-PS03-XXXX
240-R5S-PS02-XXXX
240-R5S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 268-R6N-PS12-XXXX
268-R6N-PS11-XXXX
268-R6N-PS10-XXXX
268-R6N-PS09-XXXX
268-R6N-PS08-XXXX
268-R6N-PS07-XXXX
268-R6N-PS06-XXXX
268-R6N-PS05-XXXX
268-R6N-PS04-XXXX
268-R6N-PS03-XXXX
268-R6N-PS02-XXXX
268-R6N-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 212-R3S-PS08-XXXX
212-R3S-PS07-XXXX
212-R3S-PS06-XXXX
212-R3S-PS05-XXXX
212-R3S-PS04-XXXX
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
LEVEL
EL (+) 10.0m - Above Drain Deck
EL (+) 10.0 m – Below Drain Deck
EL (+) 6.83 m – Above Top of Jacket
Riser Platform RP5N, eg: 278-R5N-0001
LEVEL
EL (+) 32.50m – Below Helideck
EL (+) 33.00m – Above Piping Platform Deck.
EL (+) 33.00m – Below Piping Platform Deck.
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Drain Deck
EL (+) 10.0 m – Below Drain Deck
EL (+) 6.938 m – Above Top of Jacket
Brownfield
Riser Platform RP4N, eg: 263-R4N-PS12-0001
LEVEL
EL (+) 36.00m – Above BDV Access Platform.
EL (+) 36.00m – Below BDV Access Platform.
EL (+) 26.0m – Above Top Deck.
EL (+) 26.00m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Drain Deck
EL (+) 10.0 m – Below Drain Deck
EL (+) 6.830 m – Above Top of Jacket
Riser Platform RP4S, eg: 223-R4S-PS12-0001
PLATFORM, LEVEL AND SEQUENCE NUMBERING 212-R3S-PS03-XXXX
212-R3S-PS02-XXXX
212-R3S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 278-R5N-PS10-XXXX
278-R5N-PS09-XXXX
278-R5N-PS08-XXXX
278-R5N-PS07-XXXX
278-R5N-PS06-XXXX
278-R5N-PS05-XXXX
278-R5N-PS04-XXXX
278-R5N-PS03-XXXX
278-R5N-PS02-XXXX
278-R5N-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 263-R4N-PS09-XXXX
263-R4N-PS08-XXXX
263-R4N-PS07-XXXX
263-R4N-PS06-XXXX
263-R4N-PS05-XXXX
263-R4N-PS04-XXXX
263-R4N-PS03-XXXX
263-R4N-PS02-XXXX
263-R4N-PS01-XXXX
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
LEVEL
EL (+) 15.50 m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Cellar Deck
EL (+) 10.0 m – Below Cellar Deck
EL (+) 6.881 m – Above Top of Jacket
Riser Platform RP7S, eg: 228-R7S-PS12-0001
LEVEL
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Cellar Deck
EL (+) 10.0 m – Below Cellar Deck
EL (+) 6.926 m – Above Top of Jacket
Well Head Platform WHP5S, eg: 999-W5S-PS12-0001
LEVEL
EL (+) 22.70 m – Above Drill Deck
EL (+) 22.70m - Below Drill Deck
EL (+) 13.157m - Above Production Deck
EL (+) 13.157 m – Below Production Deck
EL (+) 5.723 m – Above Top of Jacket
Well Head Platform WHP9S, eg: 999-W9S-PS12-0001
LEVEL
EL (+) 22.70 m – Above Drill Deck
EL (+) 22.70m - Below Drill Deck
EL (+) 13.157m - Above Production Deck
EL (+) 13.157 m – Below Production Deck
PLATFORM, LEVEL AND SEQUENCE NUMBERING 223-R4S-PS05-XXXX
223-R4S-PS04-XXXX
223-R4S-PS03-XXXX
223-R4S-PS02-XXXX
223-R4S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 228-R7S-PS07-XXXX
228-R7S-PS06-XXXX
228-R7S-PS05-XXXX
228-R7S-PS04-XXXX
228-R7S-PS03-XXXX
228-R7S-PS02-XXXX
228-R7S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 999-W5S-PS05-XXXX
999-W5S-PS04-XXXX
999-W5S-PS03-XXXX
999-W5S-PS02-XXXX
999-W5S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 999-W9S-PS04-XXXX
999-W9S-PS03-XXXX
999-W9S-PS02-XXXX
999-W9S-PS01-XXXX
Well Head Platform WHP4N, eg: 31-W4N-PS02-0001
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
LEVEL
EL (+) 22.242 m – Above Drill Deck
EL (+) 22.242m - Below Drill Deck
EL (+) 16.057m - Above Mezzanine Deck
EL (+) 16.057 m – Below Mezzanine Deck
Well Head Platform WHP6N, eg: 33-W6N-PS02-0001
LEVEL
EL (+) 22.242 m – Above Drill Deck
EL (+) 22.242m - Below Drill Deck
EL (+) 16.257m - Above Mezzanine Deck
EL (+) 16.257 m – Below Mezzanine Deck
EL (+) 12.672m - Above Production Deck
EL (+) 12.672m - Below Production Deck
Well Head Platform WHP8S, eg: 999-W8S-PS02-0001
LEVEL
EL (+) 22.700m - Below Drill Deck
EL (+) 13.157m - Above Production Deck
Well Head Platform WHP11S, eg: 999-W11S-PS02-0001
LEVEL
EL (+) 22.700 m – Above Drill Deck
EL (+) 22.700m - Below Drill Deck
EL (+) 13.157m - Above Production Deck.
Riser Platform RT2, ;eg: 210-RT2-PS02-0001
LEVEL
EL (+) 26.50m – Above Top Deck.
EL (+) 26.50m – Below Top Deck.
EL (+) 15.50m – Above Main Deck
EL (+) 15.50 m – Below Main Deck
EL (+) 10.0m - Above Cellar Deck
PLATFORM, LEVEL AND SEQUENCE NUMBERING 31-W4N-PS04-XXXX
31-W4N-PS03-XXXX
31-W4N-PS02-XXXX
31-W4N-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 33-W6N -PS06-XXXX
33-W6N -PS05-XXXX
33-W6N -PS04-XXXX
33-W6N-PS03-XXXX
33-W6N-PS02-XXXX
33-W6N-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 999-W8S-PS02-XXXX
999-W8S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 999-W11S-PS03-XXXX
999-W11S-PS02-XXXX
999-W11S-PS01-XXXX
PLATFORM, LEVEL AND SEQUENCE NUMBERING 210-RT2-PS07-XXXX
210-RT2-PS06-XXXX
210-RT2-PS05-XXXX
210-RT2-PS04-XXXX
210-RT2-PS03-XXXX
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
LEVEL
EL (+) 10.0 m – Below Cellar Deck
EL (+) 6.830 m – Above Top of Jacket
PLATFORM, LEVEL AND SEQUENCE NUMBERING 210-RT2-PS02-XXXX
210-RT2-PS01-XXXX
9.2 Special Primary Support Tagging
Special Primary support tagging shall be as per below:
Table 9.2: Special Primary Support Tagging
SPS
S5/S6/S8
XXXX
Where: S5/S6/S8: Type of Primary support
Primary:
S5/S6/S8
- Shoe
G F SF
-
Guide
-
Line Stop
-
Shoe and Line Stop
XXXX: Sequence numbering
Example for Primary SPS: SPS-G-1005.
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
10 GENERAL NOTES:
-
DELETED
-
The pipe supports shall hold the pipe in position and act as a medium for transferring piping loads to support structure. Piping shall be supported to limit excessive deflection / stresses / loads within the acceptable limit.
-
Pipe stress engineer shall decide upon the type of support, guides, axial stops and locations
and inform the layout group for the appropriate pipe supports design.
-
Unless otherwise approved by stress engineer, pipe to pipe (pickup) supports shall not be used.
-
The maximum force, moments and deflections(for crtical lines), arrived among all the load case
shall be forwarded to structural department for appropriate design of structure.
-
Piping shall be supported, anchored, and guided to prevent undue line deflection, stresses, and excessive vibration, and to protect piping and connected equipment from excessive loads and expansion stresses. The maximum sag between supports (Sustain case) shall be 19 mm (3/4 in.) except for lines NPS 1 and smaller, which shall be limited to a maximum sag of 1/2 the pipe’s nominal diameter.
-
Pipe support span shall be as per Table 7.1 provided in this Specification
-
Supporting in general will be conducted taking into account all other applicable disciplines supporting criteria. Where, piping, instrumentation/electrical tray supporting shall be combined wherever practicable.
-
Supports directly attached to parent pipe or arrangement close for guiding or restraining pipe in any direction is designated as Primary Support. On the isometric drawing, primary support types shall be indicated with unique support codes / tags.
Example: U-bolt- U4-2_G Saddle – S6-100-350-16-SS Guide – G2-20 Stop – SF6-A-100-450-200-4-CS
- Support directly attached to parent pipe (RF pad, shoe, etc.) shall be indicated on the piping
isometric drawings through ‘Support Synopsis’ as per actual support detail.
- Secondary Pipe Supports shall be indicated on the piping isometric drawings through ‘Support Illustration Code’. Additionally, all standard secondary pipe supports shall be uniquely numbered as per Pipe support Numbering Philosophy.
Example: Support tag – P31-H140-200-400-A2 Support number – 560-PS01-1001
- DELETED
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PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
If shims are required under pipe shoes, then the shims shall be fully seal-welded to the support beams to ensure that they remain in place and to avoid crevice corrosion (between shim and support member).
- Unless otherwise specified in the isometrics, the gaps indicated in the support standard are to
be maintained.
- Welding of galvanized steel to stainless steel piping is not permitted. Galvanized steel (e.g., pipe
clamps) shall not be in direct contact with stainless steel piping.
-
Lines in pipe racks/straight run shall have alternative guides for lateral restraint.
-
Where the environment makes a galvanic cell possible, insulating material is required between dissimilar clamp-type supports and the pipe (e.g., Inconel steel pipe with Stainless steel clamps, copper-nickel pipe with carbon steel clamps).
-
For steel pipelined with a non-metallic material, attachments shall not be welded to the pipe
without COMPANY approval.
- Structural sections indicated in the standard support details may be replaced by equivalent
sections of comparable dimensions and strength.
-
Supporting of pipe etc is not to be considered as individual supporting. Lines are to be routed together where practicable and with other disciplines i.e. cable tray etc.Supporting is to be standardized for ease of fabrication/installation.Pipe ways are to be established in the layout at an early stage for piping and other disciplines to utilize and follow.
-
All attachment welds shall be continuous. Stitch welding is not permitted.
-
Design and fabrication of the support structure shall be carried out in accordance with the following recommendations: Supports near flanges shall not interfere with the tightening of bolting, installation of torque/tensioning tools. Supports shall be provided for sections left overhanging when valves, pipe sections, etc. are removed.
-
Field-welded supports shall be set correctly in place and adjusted to the final position before
welding to the pipe
10.1 Resting-Type Supports
- Where possible, pipe shall be supported by resting-type supports instead of hanging-type
supports.
Insulated pipe NPS 1 and larger, supported by resting type supports, shall have steel sliding pipe shoe supports that extend at least 75 mm (3 in.) on either side of the support member or shall be a minimum of 300 mm (12 in.) long. Longer shoes shall be used when the displacement of the pipe exceeds 100 mm (4 in.) at the support location. For NPS 12 and larger lines, the sliding shoe shall consist of two parallel structural members. The portion of the shoe welded to the pipe shall be of the same nominal material as the pipe and shall be continuously welded (i.e., seal-welded; no tack or skip welding) to the pipe. Pipe shoe height shall be sufficient to permit the full thickness of insulation to be installed over the complete length of the pipe shoe.
200-20-PI-SPC-00042_B
Page 43 of 269
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
For supporting of all lines with personal protection insulation, insulation shall be cut locally at supporting member and 50 mm on either side of supporting member, and line shall be supported like uninsulated line (i.e.wear pad, guide etc.).
For uninsulated pipe runs, reinforcing pad supports or saddle supports shall be provided at support locations according to Table 10.1 below. In no case shall the pipe pressure-containing wall rest directly (including RF pad) on a metal surface (i.e., shall use a PTFE pad, saddle, etc.).
Table 10.1: Resting-Type Supports for Uninsulated Pipe
RF-PAD
Thickness
REMARK
Pipe Material
CS / LTCS
Pipe Size Pipe Thickness Support Type
6” & Below
All
No Pad Required
8” to 18”
≤ Sch 20
RF Pad
20” & Above
All
Shoe with RF Pad
6” & Below
≤ Sch 20
RF Pad
SS / INCONEL
8” to 18”
≤ Sch 20
RF Pad
20” & Above
All
Shoe with RF Pad
Material
No Pad Required
CS Plate for CS Pipe & LTCS Plate for LTCS Pipe
SS plate for SS pipe and INCONEL plate for INCONEL pipe
As per Standard Support S1
NOTE-2
NOTE-1 NOTE-2
As per Standard Support S6
NOTE-3
As per Standard Support S1
As per Standard Support S1
NOTE-2
NOTE-1 NOTE-2
As per Standard Support S6
NOTE-3
- Reinforcing pad (RF Pad) supports shall be installed with continuous welding, wrap around
1/3 of the pipe circumference, have a 3 mm (1/8 in.) vent hole plugged with sealant, and have a minimum length of 300 mm (12 in.). PTFE isolation pad shall be provided between the pipe with RF pad and the metallic surface of the support.
-
Although no mechanical reinforcing pad is required, a barrier is necessary between the pipe and the metallic surface of the support. Barrier material options shall consider potential for corrosion of the pipe surface (at support contact surface). For offshore and other corrosive environments, metal rubbing bars shall not be used. Use of PTFE isolation pad (refer Appendix-C for PTFE isolation plate specification) or use of welded pipe shoes (meeting same requirements given for insulated pipe) is acceptable.
-
Saddles shall be designed considering the stress distribution at the support points, and stiffener rings shall be employed if necessary, to distribute support point stresses around pipe circumference.
10.2 DELETED
10.3 DELETED
200-20-PI-SPC-00042_B
Page 44 of 269
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
11 LIST OF STANDARD SUPPORT
The below listed supports will be utilized in the design of piping supports together with this specification:
11.1 Primary Support List (Attachment-1)
Revised in current revision of the doc.
File name
Title
TS_ON-SCTON-EXE-ENG_PIP-567-E
BV2
BASE SUPPORT FOR VERTICAL PIPES WITH REINFORCING PLATE 2” - 24” NPS
TS_ON-SCTON-EXE-ENG_PIP-618-E
G2 GUIDE ON SADDLE FOR HORIZONTAL INSULATED PIPES 1/2” - 80” NPS
TS_ON-SCTON-EXE-ENG_PIP-686-E
MB2 MISCELLANEOUS: PEDESTAL FOR BASE SUPPORT
TS_ON-SCTON-EXE-ENG_PIP-701-E
MF1 MISCELLANEOUS: PLATE OR TEE SHAPE FOR AXIAL STOP
TS_ON-SCTON-EXE-ENG_PIP-717-E
MJ3 MISCELLANEOUS: ATTACHMENT ON PIPE FOR BV2
TS_ON-SCTON-EXE-ENG_PIP-724-E
MP2 MISCELLANEOUS: SQUARE PLATE
TS_ON-SCTON-EXE-ENG_PIP-726-E
MP4
MISCELLANEOUS: BEAMS FOR GUIDE ON SADDLE FOR HORIZONTAL INSULATED PIPES
MP10 – DOUBLER PLATE
MP10 DOUBLER PLATE
TS_ON-SCTON-EXE-ENG_PIP-731-E
MS3 MISCELLANEOUS: SADDLE FOR GUIDE
TS_ON-SCTON-EXE-ENG_PIP-732-E
MS4 PTFE ISOLATION PLATE
TS_ON-SCTON-EXE-ENG_PIP-732A-E
JMS5 PTFE ISOLATION PLATE
TS_ON-SCTON-EXE-ENG_PIP-741-E
MU2 MISCELLANEOUS: INSULATED U-BOLT
TS_ON-SCTON-EXE-ENG_PIP-815-E
S1
REINFORCING PLATE FOR PIPES 2” – 18” NPS
TS_ON-SCTON-EXE-ENG_PIP-819-E
S5
SHOE FOR PIPES 1/2” - 18” NPS
TS_ON-SCTON-EXE-ENG_PIP-820-E
S6
SADDLE FOR PIPES 2” - 52” NPS
TS_ON-SCTON-EXE-ENG_PIP-822-E
S8
CLAMPED SADDLE WITH RUBBER FOR PIPES 1/2” - 60” NPS
TS_ON-SCTON-EXE-ENG_PIP-824-E
S11 PTFE ISOLATION PLATE FOR BARE HORIZONTAL PIPES ½” – 18” NPS
TS_ON-SCTON-EXE-ENG_PIP-824A-E
JS11
ISOLATION PLATE FOR BARE HORIZONTAL PIPE
TS_ON-SCTON-EXE-ENG PIP-825-E
S12
SADDLE WITH FULL ENCIRCLEMENT REINFORCING PLATE FOR PIPES 10” - 80” NPS
TS_ON-SCTON-EXE-ENG_PIP-830-E
SF5 SHOE & AXIAL STOP FOR PIPES 1/2” - 18” NPS
TS_ON-SCTON-EXE-ENG_PIP-831-E
SF6 SADDLE & AXIAL STOP FOR PIPES 2” - 80” NPS
200-20-PI-SPC-00042_B
Page 45 of 269
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
File name
Title
Revised in current revision of the doc
TS_ON-SCTON-EXE-ENG_PIP-833-E
SF8 CLAMPED SADDLE & AXIAL STOP WITH RUBBER FOR PIPES ½” – 60” NPS
TS_ON-SCTON-EXE-ENG_PIP-834-E
SF12
SADDLE WITH FULL ENCIRCLEMENT REINFORCING PLATE & AXIAL STOP FOR PIPES 10” - 80” NPS
TS_ON-SCTON-EXE-ENG_PIP-841-E
T2 GUSSETS FOR PIPES ½” – 60” NPS
TS_SCTOF-EXE_PIP-905-E
T5
CLAMPED GUSSET FOR SOCKET WELD SMALL BORE CONNECTION
TS_ON-SCTON-EXE-ENG_PIP-902-E
TC1 CLAMPED GUSSETS FOR SMALL BORE CONNECTION
TS_SCTOF-EXE_PIP-907-E
TC2 GUSSETS FOR CU-NI PIPES
TC3-GUSSET SUPPORT
TC3 GUSSET SUPPORT CLAMP(HEADER) – WELDED(BRANCH)
TC4-GUSSET SUPPORT
TC4 GUSSET SUPPORT WELDED(HEADER) – WELDED(BRANCH)
TC5-GUSSET SUPPORT
TC5 GUSSET SUPPORT CLAMP(HEADER)- WELDED(BRANCH)
TC6-GUSSET SUPPORT
TC6 GUSSET SUPORT WELDED(HEADER) – WELDED(BRANCH)
TS_ON-SCTON-EXE-ENG_PIP-851-E
U4
INSULATED U-BOLT ON BEAM FOR HORIZONTAL PIPES 1/2” - 3” NPS
TS_ON-SCTON-EXE- ENG_PIP-864-E
WG2 HOLD DOWN GUIDE ON SADDLE FOR PIPES 1/2” - 68” NPS
TS_ON-SCTON-EXE-ENG_PIP-902-E
JS5 SHOE FOR PIPES 1/2” - 18” NPS
TS_ON-SCTON-EXE-ENG_PIP-903-E
JS6 SADDLE FOR PIPES 2” - 52” NPS
TS_SCTOF-EXE_PIP-901-E
JS8 CLAMPED SADDLE WITH RUBBER Cu-Ni PIPES 1”- 10” NPS
TS_SCTOF-EXE_PIP-904-E
JS12
VARIABLE HEIGHT SADDLE WITH FULL ENCIRCLEMENT REINFORCING PLATE FOR PIPES 10” - 32” NPS
GRE pipe support shall be as per GRE Vendor recommendation. Refer Sec. 8.3 for details.
200-20-PI-SPC-00042_B
Page 46 of 269
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
11.2 Secondary Support List (Attachment-2)
File name
Title
Revised in current revision of the doc
TS_ON-SCTON-EXE-ENG_PIP-766-E
P1
T POST
TS_ON-SCTON-EXE-ENG_PIP-767-E
P2
L POST
TS_ON-SCTON-EXE-ENG_PIP-768-E
P3
COLUMN WITH END PLATE
TS_ON-SCTON-EXE-ENG_PIP-769-E
P4
PORTAL
TS_ON-SCTON-EXE-ENG_PIP-770-E
P5
HALF PORTAL
TS_ON-SCTON-EXE-ENG_PIP-771-E
P6
CANTILEVER
TS_ON-SCTON-EXE-ENG_PIP-772-E
P7
CONNECTING BEAM
TS_ON-SCTON-EXE-ENG_PIP-773-E
P8
UNDERNEATH CONNECTING BEAM FOR HANGER
TS_ON-SCTON-EXE-ENG_PIP-774-E
P9
BRACED CANTILEVER
TS_ON-SCTON-EXE-ENG_PIP-775-E
P10
CONNECTING BEAM FOR HANGER
TS_ON-SCTON-EXE-ENG_PIP-776-E
P11
SIMPLE CANTILEVER FOR HANGER
TS_ON-SCTON-EXE-ENG_PIP-777-E
P12
BRACED CANTILEVER FOR HANGER
TS_ON-SCTON-EXE-ENG_PIP-778-E
P13
HORIZONTAL T BEAM FOR VERTICAL PIPES
TS_ON-SCTON-EXE-ENG_PIP-779-E
P14
DOUBLE CANTILEVER FOR GUIDE
TS_ON-SCTON-EXE-ENG_PIP-780-E
P15
DOUBLE BRACED CANTILEVER FOR GUIDE
TS_ON-SCTON-EXE-ENG_PIP-783-E
P18
END WELDED CANTILEVER FOR VERTICAL PIPES
TS_ON-SCTON-EXE-ENG_PIP-784-E
P19
END WELDED BRACED CANTILEVER FOR VERTICAL PIPES
TS_ON-SCTON-EXE-ENG_PIP-786-E
P21
SHIM FOR HORIZONTAL PIPES
TS_ON-SCTON-EXE-ENG_PIP-787-E
P22
CONNECTION PLATE FOR BEAMS
TS_ON-SCTON-EXE-ENG_PIP-788-E
P23
STIFFENER PLATE FOR SHAPE
TS_ON-SCTON-EXE-ENG_PIP-789-E
P24
STIFFENER PLATES FOR SHAPE
TS_ON-SCTON-EXE-ENG_PIP-790-E
P25
SUPPORTING BEAM FROM PIPE TO PIPE
TS_ON-SCTON-EXE-ENG_PIP-791-E
P26
VERTICAL WELDED ENDS BEAM
200-20-PI-SPC-00042_B
Page 47 of 269
Revised in current revision of the doc
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
File name
Title
TS_ON-SCTON-EXE-ENG_PIP-792-E
P27 WELDED BRACED CANTILEVER FOR VERTICAL PIPES
TS_ON-SCTON-EXE-ENG_PIP-793-E
P28
BRACED CANTILEVER FROM VERTICAL VESSEL
TS_ON-SCTON-EXE-ENG_PIP-794-E
P29
TIED CANTILEVER FROM VERTICAL VESSEL
TS_ON-SCTON-EXE-ENG_PIP-795-E
P30
T POST MADE BY PIPE
TS_ON-SCTON-EXE-ENG_PIP-796-E
P31
L POST MADE BY PIPE
TS_ON-SCTON-EXE-ENG_PIP-797-E
P32
COLUMN WITH END PLATE MADE BY PIPE
TS_ON-SCTON-EXE-ENG_PIP-798-E
P33
PORTAL MADE BY PIPE
TS_ON-SCTON-EXE-ENG_PIP-799-E
P34
HALF PORTAL MADE BY PIPE
TS_ON-SCTON-EXE-ENG_PIP-800-E
P35
ASYMETRIC PORTAL MADE BY PIPE
TS_ON-SCTON-EXE-ENG_PIP-801-E
P36
STIFFENER AND TOP PLATES FOR SHAPE CODE I
TS_ON-SCTON-EXE-ENG_PIP-803-E
P38
BRACE
TS_ON-SCTON-EXE-ENG_PIP-804-E
P39
LOCAL REINFORCING FOR SUPPORT
200-20-PI-SPC-00042_B
Page 48 of 269
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
12 ATTACHMENTS
Attachment 1 – Standard Supports (Primary Support)
Attachment 2 – Standard Supports (Secondary Support) 3D drawings on the first page of each standard is indicative only. The marker pointer on the drawing represents the position of the logical point on the line in the 3D model software.
Attachment 3 – Calculation for Low Temperature Transition to Supporting Structure
200-20-PI-SPC-00042_B
Page 49 of 269
Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
Attachment 1 – Standard Supports (Primary Support)
200-20-PI-SPC-00042_B
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Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
Attachment 2 – Standard Supports (Secondary Support)
200-20-PI-SPC-00042_B
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Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
PIPING SUPPORT STANDARD SPECIFICATION (COMMON) FOR COMP3 PROJECT
Attachment 3 – Calculation for Low Temperature Transition to Supporting Structure
200-20-PI-SPC-00042_B
`
Page268 of 269
ATTACHMENT-3 TO PIPING SUPPORT STANDARD SPECIFICATION FOR COMP3 PROJECT (DOC NO. 200-20-PI-SPC-00042)
CALCULATION FOR PIPE LOW TEMPERATURE TRANSITION ON SUPPORTING STRUCTURE THRU PIPE SHOE
Pipe Size
Shoe height
Shoe height
Shoe height
Web thickness
Shoe width
Shoe length
Shoe length
Width of 10mm stiffner plate of shoe
No of stiffner plates
Insulation Thickness
Area of metal for heat conduction ( shoe to base plate )
Area for heat convection ( shoe to air )
Area of metal for heat conduction ( shoe to base plate )
Area for heat convection ( shoe to air )
Thermal conductivity of pipe material.
Convective heat transfer coefficient
Out side surface tem of pipe in deg cen.
Out side surface temp.
Ambient tem
Ambient temp in deg Fahrenheit.
KmAmTi+hoApH*To
KmAm+hoAp*H
temp at the bottom of shoe in farenheit
temp at the bottom of shoe in degcen
Temperat ure
-29°C
Inches
mm
inches
ft
mm
mm
mm
inches
mm
No
mm
mm2
mm2
sq ft
sq ft
Btu/hr-ft-degF Btu/hr-ft2-degF
Deg. Cen
Deg. F Deg. Cen
Deg. F
Q1
Q2
Q1/Q2
Deg. C
OK / NOT OK
(SL)+(WSW1)(AL)+2L(H-I)+W1W(H-I)
Note-3
Note-2
Note-1
0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24 26 28 30 32 36 38
100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
H
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328 0.328
S 6 6 6 6 8 6 6 6 8 8 8 8 8 10 10 10 10 10 10 10 10
A 60 60 60 100 100 100 100 100 220 220 220 220 250 470 560 605 645 695 735 824 865
L
12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12
300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300 300
W 20 20 20 20 20 20 30 30 150 150 150 150 180 400 490 535 575 625 665 754 795
W1 4 4 4 4 4 4 4 4 2 2 2 2 2 2 2 2 2 2 2 2 2
I 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Am 2280 2280 2280 2280 3040 2280 2520 2520 7200 7200 7200 7200 7680 14000 15800 16700 17500 18500 19300 21080 21900
Ap 56000 56000 56000 68000 68000 68000 72000 72000 156000 156000 156000 156000 171000 281000 326000 348500 368500 393500 413500 458000 478500
Am 0.0245 0.0245 0.0245 0.0245 0.0327 0.0245 0.0271 0.0271 0.0775 0.0775 0.0775 0.0775 0.0827 0.1507 0.1701 0.1798 0.1884 0.1991 0.2077 0.2269 0.2357
Ap 0.603 0.603 0.603 0.732 0.732 0.732 0.775 0.775 1.679 1.679 1.679 1.679 1.841 3.025 3.509 3.751 3.967 4.236 4.451 4.930 5.151
Km 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20 8.20
ho 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
Ti -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85 -85
Ti -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121 -121
To 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
To 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43 43
1.04 1.04 1.04 6.48 -1.63 6.48 5.73 5.73 -6.16 -6.16 -6.16 -6.16 -4.48 -22.10 -20.92 -20.33 -19.81 -19.15 -18.63 -17.46 -16.92
0.79 0.79 0.79 0.92 0.99 0.92 0.99 0.99 2.29 2.29 2.29 2.29 2.49 4.21 4.85 5.17 5.45 5.80 6.08 6.71 7.00
Tp 1.31 1.31 1.31 7.03 -1.65 7.03 5.82 5.82 -2.69 -2.69 -2.69 -2.69 -1.80 -5.25 -4.32 -3.94 -3.64 -3.30 -3.06 -2.60 -2.42
Tp -17 -17 -17 -14 -19 -14 -15 -15 -19 -19 -19 -19 -19 -21 -20 -20 -20 -20 -19 -19 -19
OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK
Shoe type- S5 for 1/2” to 18” -Refer Support Specification 200-20-PI-SPC-00042 Shoe type- S6 for 20” to 38” -Refer Support Specification 200-20-PI-SPC-00042 This calculation is based on Piping and Pipeline assement guide by Keith Escoe
NOTES
-
Minimum ambient temperature 6°C as per Project Design Basis for COMP 3 Project (Doc no. 200-20-PE-DEC-00004 Table 8.2.1)
-
Convective heat transfer coefficient for Air-Free convetion considered as per Book “Exploring Engineering” by Philip Kosky, Robert Balmer, … George Wise Table 14.2
-
Thermal conductivity as per ASEM SEC II PART D-2010 TABLE TCD, Material Group ‘K’.
TP= TEMPERATURE AT THIS POINT
Company No. & Rev. DOC NO. 200-20-PI-SPC-00042_B
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Company No. & Rev. 200-20-PI-SPC-00003_50
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