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
:
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
COMPANY Document No.
:
200-20-PI-SPC-00047
CONTRACTOR Document No.
:
033764-E-D00-18-SPM-TB-S-00009
Discipline
: PIPING
Document Type
: SPECIFICATION
Document Category/Class
:
1
Document Classification
:
Internal
00 24-APR-2025 Approved for Construction
B
10-FEB-2025
Issued for Approval
Pranav Pandurkar Pranav Pandurkar Piping Material Engineer
A
05-NOV-2024
Issued for Review
Vikas Kumar
24-APR-2025
24-APR-2025
Suresh Gopalakrishnan Suresh Gopalakrishnan Lead Piping Material Engineer Suresh Gopalakrishnan
Ravin George
Ravin George
Piping Lead
Ravin George
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
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
REVISION HISTORY
Revision
Date
Revision Description
A1
A
18-OCT-2024
Issued for Inter-Discipline Check
05-NOV-2024
Issued for Review
B
10-FEB-2025
Issued for Approval Clauses revised as below – Clause 2.2 – Page 9 Clause 3.3 – Page 11 & 12 Clause 3.4 – Page 12 Clause 5.2.2 & 5.2.5 – Page 16 Clause 5.2.6(c), 5.2.8, 5.2.15, 5.2.17 – Page 17 Fig.A – Page 18 Table-A, Table 1, Clause 5.2.18, 5.2.19, 5.2.21 & 5.2.22 – Page 19 Clause 5.2.23, 6.2.3 – Page 20 Clause 6.5.1 – Page 21 Clause 6.5.8, 7.1.3 – Page 22 Clause 8.3.3, 8.3.4 & 8.3.5 – Page 23 Clause 8.6.5, 8.6.6 – Page 24 Clause 8.9.1(c) – Page 25 Clause 10.1.2 – Page 26 Clause 12.1.5 – Page 27 Clause 13.1.10 & 14.1.1 – Page 28 Clause 14.1.10 & 14.1.11 – Page 29 Clause 15.1.3 – Page 30
00
24-APR-2025
Approved for Construction Clauses revised as below – Clause 5.2.3 – Page 16 Table-A – Page 19
HOLDS LIST
Hold No
Hold Description
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
TABLE OF CONTENTS
1
1.1
1.2
2
2.1
2.2
3
3.1
3.2
3.3
3.4
3.5
3.6
4
INTRODUCTION … 5
Project Objective … 5
Project Scope … 5
DEFINITIONS AND ABBREVIATIONS … 8
Definitions … 8
Abbreviations … 9
REGULATIONS, CODES AND STANDARDS … 11
Order of Precedence … 11
Company References … 11
Project Documents … 11
Company Inspection requirement … 12
APPLICABLE CODES & STANDARDS … 12
ASME–AMERICAN SOCIETY OF MECHANICAL ENGINEERS … 13
PURPOSE OF DOCUMENT … 16
4.1
General … 16
5
5.1
5.2
5.3
6
GENERAL REQUIREMENTS … 16
GENERAL … 16
FITTINGS … 16
CLOSURES AND REDUCERS … 20
MATERIAL REQUIREMENTS … 20
6.1 METHOD OF MANUFACTURE … 20
6.2
6.3
6.4
6.5
7
8
8.1
8.2
8.3
CHEMICAL COMPOSITION … 20
HEAT TREATMENT … 21
SURFACE FINISH … 21
OTHER SERVICE SPECIFIC REQUIREMENTS … 21
WELDING … 22
TESTING AND INSPECTION … 22
GENERAL … 22
HYDROSTATIC TESTING … 23
CORROSION TESTING… 23
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
8.4
8.5
8.6
TENSILE TESTING … 23
HARDNESS TESTING … 23
IMPACT TESTING … 24
8.7 METALLOGRAPHIC EXAMINATION FOR LTCS … 24
FERRITE CHECK AND METALLOGRAPHIC EXAMINATION FOR STAINLESS STEEL
8.8 MATERIAL … 24
HYDROGEN-INDUCED CRACKING (HIC) TESTING FOR CARBON STEEL AND LOW
8.9 ALLOY STEEL … 24
8.10 OTHER TESTS FOR CU-NI … 25
8.11
INSPECTION … 25
9
9.1
9.2
NON-DESTRUCTIVE EXAMINATION (NDE) … 25
GENERAL … 25
VISUAL EXAMINATION … 26
9.3 MAGNETIC PARTICLE EXAMINATION … 26
9.4
9.5
9.6
10
11
12
13
14
15
16
LIQUID PENETRANT EXAMINATION … 26
ULTRASONIC EXAMINATION… 26
RADIOGRAPHY EXAMINATION … 26
POSITIVE MATERIAL IDENTIFICATION … 26
CLEANING … 27
MARKING AND TRACEABILITY … 27
CERTIFICATION … 27
HANDLING, PACKING, PRESERVATION AND STORAGE … 28
DOCUMENTATION … 29
NON-COMPLIANCE / DEVIATION:… 30
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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS 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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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS 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). • New Fuel Gas 8” CRA Spur-line and flanged riser from Subsea skid to RP8S.
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
• 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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NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS 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
SUBCONTRACT
SUBCONTRACTOR
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, fabricated, tested and permanently in connection with the NFPS Project as further described in Exhibit 6.
installed by CONTRACTOR at SITE
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 Contract signed by SUBCONTRACTOR and CONTRACTOR for the performance of a certain portion of the WORK within the Project. 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.
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
2.2
Abbreviations
Code
API
ASME
ASTM
BS
CE
CLR
CRA
CS
CTR
Cu-Ni
DN
Definition
American Petroleum Institute
American Society of Mechanical Engineers
American Society for Testing Materials
British Standards
Carbon Equivalent
Crack Length Ratio
Corrosion-Resistant Alloy
Carbon Steel
Crack Thickness Ration
Copper nickel alloy
Nominal Diameter
EEMUA
Engineering Equipment and Materials Users Associations
EPC
HAZ
HIC
HRC
HV
IDC
ISO
ISPM
ITP
LP
LTCS
Engineering, Procurement and Construction
Heat-Affected Zone
Hydrogen Induced Cracking
Hardness Rockwell C
Hardness Vickers
Inter-Discipline Check
International Organization for Standardization
International Standards for Phytosanitary Measures
Inspection and Test Plan
Liquid Penetrant
Low-Temperature Carbon Steel
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
Code
Definition
m
mm
MPI
MTR
NACE
NDE
NFPA
NFPS
NPS
PMI
PO
ppm
PQR
PWHT
QELNG
RGE
RT
TMCP
UT
WPS
Metre
Millimetre
Magnetic Particle Inspection
Material Test Reports
National Association of Corrosion Engineering
Non-destructive Examination
National Fire Protection Association
North Field Production Sustainability
Nominal Pipe Size
Positive Material Identification
Purchase Order
Parts per million
Procedure Qualification Records
Post Weld Heat treatment
QatarEnergy LNG
RasGas Wet Gas Asset
Radiography Testing
Thermomechanical Control Processing
Ultrasonic testing
Welding Procedure Specifications
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
3
REGULATIONS, CODES AND STANDARDS
3.1
Order of Precedence
In general, the order of precedence shall be as follows:
a) Qatari Governmental and Regulatory Requirements b) COMPANY Policies and Procedures c) Project Specifications d) Industry Codes and Standards e) COMPANY and CONTRACTOR’S lessons learned
If CONTRACTOR / 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 / VENDOR shall not proceed with any deviation to the Specifications without prior COMPANY APPROVAL.
3.2
Company References
S. No
Document Number
Title
LTC/C/NFP/5129/20
Contract Agreement
EXHIBIT 5
Project Instructions
PRJ-PJL-PRC-004
PRJ-PJL-PRC-005
Facilities Engineering and Vendor Document Numbering Procedure
Facilities, System and Unit Number Codes and Descriptions Procedure
PRJ-PJL-PRC-006
Project Information Handover Procedure
PRJ-PJL-PRC-048
Facilities Documentation Metadata Requirements Procedure
PRJ-PJL-PRC-049
Project Information Handover, Verification and Acceptance Procedure
3.3
Project Documents
S. No
Document Number
Title
COMP3-SPM-PE-PRC-00003
Document Numbering Procedure
200-20-CE-SPC-00031
200-20-CE-SPC-00034
COMP3-SPM-CC-PRC-00002
Specification for Piping General Welding Requirement & Inspection for COMP3 Project
Specification For Positive Material Identification (PMI) for COMP3 Project
Material Management and Traceability Control Procedure
COMP3-SPM-QM-PRC-00002
Source Inspection Procedure
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
S. No
Document Number
Title
200-20-CE-SPC-00025
COMP3-SPM-PO-PRC-00005
200-20-CE-SPC-00033
Specification for Topsides Material & Corrosion Requirements for Sour Service for COMP3 Project
Handling, Storage, Packing & Preservation Procedure
Specification for Weld Overlay for Piping Materials for COMP3 Project
3.4
Company Inspection requirement
S. No
Document Number
Title
COMP3-SPM-QM-PRC-00003 Project Quality Requirements for Suppliers
COMP3-SPM-QM-PLN-00001 Project Quality Plan
3.5
APPLICABLE CODES & STANDARDS
This section identifies the applicable international codes & standards to be used for the piping design of this project but not limited to those listed below. latest edition shall be followed for all international codes and standards as on the effective date of CONTRACT award.
3.5.1 API–AMERICAN PETROLEUM INSTITUTE
API SPEC 5L
API SPEC 6A
2018
2018
Specification for Line Pipe
Specification for Wellhead and Christmas Tree Equipment
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COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
3.6 ASME–AMERICAN SOCIETY OF MECHANICAL ENGINEERS
ASME B1.20.1
2013
Pipe Threads, General Purpose (Inch)
ASME B36.10M
ASME B36.19M
ASME B16.9
ASME B16.11
ASME B16.25
2018
2018
2024
2021
2022
ASME B16.49
2023
Welded and Seamless Wrought Steel Pipe
Stainless Steel Pipe
Factory-Made Wrought Butt welding Fittings
Forged Fittings, Socket-Welding and Threaded
Butt welding Ends
Factory-made wrought steel, Buttwelding induction Bends for Transportation and Distribution Systems
ASME B31.3
2022
Process Piping
ASME B31.8
2022
Gas Transmission and Distribution Piping Systems
ASME SEC V
2023
Non Destructive Examinations
ASME SEC VIII Div 1 2023
ASME/BPVC SEC IX
2023
BPVC Section VIII - Rules for Construction of Pressure Vessels - Division 1
BPVC Section IX - Welding, Brazing and Fusing Qualifications
3.6.1 ASTM-American Society for Testing and Material
ASTM A105/A105M
Apr 2024
ASTM A106/A106M
Nov 2019
ASTM A153/A153M
May 2023
ASTM A182/A182M
Aug 2024
ASTM A234/A234M
May 2024
ASTM A240/A240M
May 2024
ASTM A262
Sep 2021
Standard Specification for Carbon Steel Forgings for Piping Applications Standard specification for Seamless Carbon Steel Pipe for High Temperature Services Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
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SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
ASTM A350/A350M
Jul 2024
ASTM A380/A380M
Sep 2017
ASTM A403/A403M
Dec 2022
ASTM A420/A420M May 2024
ASTM A516/A516M
Nov 2017
ASTM A694/A694M
Oct 2022
ASTM A700
Nov 2019
ASTM A707/A707M
Nov 2019
ASTM A815/A815M
Mar 2024
ASTM A860/A860M
Jul 2024
ASTM A960/A960M
Aug 2024
ASTM A961/A961M
Aug 2024
ASTM B151/B151M
Apr 2020
ASTM B366/B366M
Apr 2023
ASTM B564
ASTM E18
Apr 2022
May 2024
ASTM E23
May 2024
ASTM E112
Jun 2024
ASTM E562
Aug 2020
ASTM G28
Jan 2023
ASTM G48
Dec 2020
Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low- Temperature Service Standard Specification for Carbon Steel Plate for Moderate and Lower, Temperature Service Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service Standard Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment Standard Specification for Forged Carbon and Alloy Steel Flanges for Low-Temperature Service Standard Specification for Wrought Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings Standard Specification for Wrought High-Strength Ferritic Steel Butt-Welding Fittings Standard Specification for Common Requirements for Wrought Steel Piping Fittings Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications Standard Specification for Copper-Nickel-Zinc Alloy (Nickel Silver) and Copper-Nickel Rod and Bar Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings Standard Specification for Nickel Alloy Forgings Standard Test Methods for Rockwell Hardness of Metallic Materials Standard Test Methods for Notched Bar Impact Testing of Metallic Materials Standard Test Methods for Determining Average Grain Size Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count Standard Test Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel-Rich, Chromium-Bearing Alloys Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution
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SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
3.6.2 BSI–BRITISH STANDARDS INSTITUTION
BSI BS EN 10204
2004
BSI BS ISO 6892-2
2018
Metallic products. Types of inspection documents
Metallic materials- Tensile testing- Part 2: Method of test at elevated temperature
3.6.3 EEMUA- Engineering Equipment and Materials Users Association
EEMUA Pub No. 234 Edition-1
2015
90/10 Copper nickel alloy piping for offshore applications Specification (Incorporating EEMUA 144,145 and 146)
3.6.4 NACE INTERNATIONAL
NACE MR0175/ISO 15156
4th Edition 2020
Petroleum and Natural Gas Industries Materials for Use in H2S-Containing Environments in Oil and Gas Production
NACE TM0284
2016
Evaluation of Pipeline and Pressure Vessel Steels for Resistance to Hydrogen-Induced Cracking
3.6.5 MSS–MANUFACTURERS STANDARDIZATION SOCIETY
MSS SP-25
MSS SP-43
2018
2019
Standard Marking System for Valves, Fittings, Flanges, and Unions
Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
MSS SP-75
2019
High Strength, Wrought, Butt-Welding Fittings
MSS SP-83
2018
Class 3000 Steel Pipe Unions Socket welding and threaded
MSS SP-95
2024
Swaged Nipples and Bull Plugs
MSS SP-97
2019
Integrally Reinforced Forged Branch Outlet Fittings: Socket Welding, Threaded, and Buttwelding Ends.
3.6.6
ISPM- International Standards for Phytosanitary Measures
ISPM 15
2009
International Standards for Phytosanitary Measures No. 15.
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SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
4
PURPOSE OF DOCUMENT
4.1
General
This Specification covers the technical requirements of pipe fittings for metallic materials for topside piping as per ASME B31.3 latest revision. The requirements stated in the specification are supplementary to the applicable reference international codes and standards for this project.
5
GENERAL REQUIREMENTS
5.1
GENERAL
5.1.1
In general, the requirement specified in this document shall be applicable, unless specified otherwise.
5.1.2 All manufacturing and testing procedures, mill certificates, qualification certificates shall be
submitted for COMPANY review and approval prior to start of work.
5.1.3 Supplier, sub-suppliers and manufacturer of material shall be qualified as per approved
vendor list.
5.2
FITTINGS
5.2.1 Butt-welded elbows shall be the long-radius type (R = 1.5D). Except for the lines that must
be piggable. Short-radius elbows shall not be used.
5.2.2 Factory-made wrought butt-weld fittings shall be designed and manufactured in accordance with ASME B16.9. Fittings shall be of seamless or single-seam-welded construction as indicated in the purchase description. Fittings made from welded pipe or tube shall have a joint efficiency factor equal to 1.0. The Radiographic Testing (RT) required by the applicable fitting specification to establish the 1.0 joint efficiency factor shall be performed after forming and heat treatment (if heat treatment is required).
5.2.3 Two-seam welded tees and reducing tees that are manufactured by welding two identical half sections of formed plate together to form the completed tees or reducing tees are not permitted for any sizes .
5.2.4 Two-seam welded elbows or reducers that are manufactured by welding two half-sections of formed plate together to form the completed elbows or reducers are permitted only for fittings larger than NPS 48.
5.2.5 For weld overlay fittings, weld overlay qualification shall follow Project Specification requirements as per Specification for Weld Overlay for Piping Materials for COMP3 Project (Doc. No. 200-20-CE-SPC-00033) and Specification for Topsides Material & Corrosion Requirements for Sour Service for COMP3 Project (Doc. No. 200-20-CE-SPC-00025).
5.2.6 When fittings are made from plate, the following are required;
a. Manufacturer shall provide a Material Test Report (MTR) that shows that the plate material meets all requirements of an acceptable ASTM standard (e.g., ASTM A 240/A 240M Gr. 316L or A516 Gr. 70), demonstrates that the fitting was made from a wrought (not cast) material, and provides the original plate thickness.
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b. The original plate material shall have an allowable stress equal to or higher than the mating pipe material to demonstrate that the pressure rating of the formed fitting can be calculated and justified to be at least equal to that of a straight seamless pipe of equivalent material as specified by ASME B16.9.
c. Deleted.
d. 100% RT shall be performed on the finished fittings after all heat treatments required by
the ASTM standard of the fittings and NACE MR 0175 / ISO15156.
5.2.7 Manufacturer shall provide the MTRs from each batch production of fittings.
5.2.8 High-strength (≥ 290 MPa, 42 ksi yield) fittings made from Thermomechanical Control Processing (TMCP) plates or starting pipe with TMCP process shall not be permitted.
5.2.9
If Manufacturer chooses the proof-testing option to qualify its fitting design per ASME B16.9, then Manufacturer shall provide certified proof test data. Further, separate proof test data shall be provided for seamless fittings, single-seam welded fittings, and double-seam welded fittings.
5.2.10 Cast and wrought-iron threaded fittings shall not be used.
5.2.11 Forged, seamless and welded (fabricated) Cu-Ni fittings shall be supplied as per EEMUA
234, ASME B16.11 & MSS SP-83.
5.2.12 Cu-Ni fittings/components shall be in accordance to pressure system as in indicated in
Purchase Order.
5.2.13 Bevel ends shall be as per ASME B16.25 Fig. 2a/3a.
5.2.14 Fittings shall be per Table 1 and applicable requirements of this specification.
5.2.15 Deleted.
5.2.16 Where carbon steel pipe is specified as galvanized, the galvanizing of these items shall be in accordance with ASTM A153. The minimum galvanizing coverage shall not be less than 610 g/m² (corresponding to class B of ASTM A153).
5.2.17 Barred tees dimensions are as per ASME B16.9 and MSS SP-75 covered in clause no.5.1.18 Table-1. Barred tees shall have the scraper bars (Plate) welded as per the below Figure-A, so as to prevent damage to the bars (Plate) and/or pig cups. Inlets and outlets for conventional cup-type pigs shall be the barred type. The bars shall be attached as per the Figure-A by double sided full penetration welds. The design of the weldment and the welding procedure shall ensure that if the bar (Plate) is struck with enough force to break it, the bar itself will break rather than the weldment. If the tee is weld overlaid, the weld overlay procedure shall also ensure that the overlay will not break or fracture in such an event. Barred tees in CRA pipelines shall have bars (Plate) made of solid CRA material and shall be welded as per the below Figure-A (Detail “D”). All longitudinal and transverse bar end edges shall be chamfered to avoid snagging. See Figure-A below for scraper bar (Plate) design (Construction details of tee, Guided transverse bars (plate) and welds) for barred tees and Table-A below for scraper bar (plate) details.
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Figure-A: Scraper bar design
(Construction details of Tee, Guided transverse bars and welds)
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Table-A: Scraper bar (plate) details
Outlet Size
NPS
DN
No. of Bars (Plate) Required
8
24
28
32
38
219.1
600
700
800
950
2
3
3
3
4
Plate t
Min. W
in.
mm
in.
mm
0.315
8
1.96
1/2
3/4
3/4
1
12.7
19.1
19.1
25.4
2
2
21/2
21/2
50
50.8
50.8
63.5
63.5
5.2.18 Fittings mill tolerance as per ASME B16.9 (12.5%) with the exception of ASTM A860 that the
tolerance will be in according to Table 11 of API 5L std. latest revision.
Barred tee ID (post cladding) shall be match with pipeline ID.
Table 1: Applicable Standards
Fittings (1)
Steel butt-weld fittings (including Barred TEE)
Applicable Standards
ASME B16.9
MSS SP-75
Steel socket-welding and threaded fittings and plugs ASME B16.11(2)(3)
Branch outlet fittings
Notes:
(1) Use of cast steel fittings is not permitted.
(2) Unions shall be as per MSS-SP-83
(3) Swage nipples shall be as per MSS-SP-95
MSS SP-97
5.2.19 Unless otherwise noted in the pipe classes, carbon steel fittings shall be of seamless construction for pipe sizes up to and including NPS 16 and shall be of welded construction for fitting sizes 18” & above. Stainless steel up to and including NPS 6 shall be seamless. For Copper Nickel up to and including NPS 10 shall be seamless For Nickel alloy pipes, sizes up to NPS 6 seamless construction is considered.
5.2.20 All screwed fittings shall be threaded NPTF in accordance with ASME B1.20.1.
5.2.21 Out-of-roundness and all the tolerances shall be in accordance with the applicable design
code.
5.2.22 Deleted.
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5.2.23 Deleted.
5.3
CLOSURES AND REDUCERS
5.3.1 Reducers up to NPS 16” (for CS and LTCS), up to NPS 6” for (Nickle alloy and Stainless steel) shall be seamless and to shape as per ASME B16.9 (i.e. with Knuckle radius offset). Reducers up to NPS 10” (Cu-Ni) shall be seamless and to shape as per EEMUA 234. Tapers are not permitted for any size.
6
MATERIAL REQUIREMENTS
6.1 METHOD OF MANUFACTURE
6.1.1 All carbon steel, low temperature carbon steel shall be killed steel, with the primary melting process being open-hearth, basic-oxygen, or electric-furnace, possibly combined with separate degassing or refining.
6.1.2 All stainless steel materials shall be manufactured by electric arc or electric furnace,
degasses and refined.
6.1.3 Bar stock material shall not be used for manufacture of any fittings.
6.1.4 All material used shall be new and not recycled.
6.1.5 Seamless fittings shall be hot finished / normalized.
6.1.6 Plates used for welded fittings shall be normalized.
6.1.7 All o-lets shall be forged construction and shall not be machined from forged bar or billets.
6.1.8 Weld Joints on welded fittings shall be double-welded, full-penetration welds.
6.1.9 Welding / weld repairs (where approved by COMPANY) shall be carried out prior to heat treatment. The weld buildup (e.g. at ends of fittings, outlet of tees, etc.) is considered a weld repair and specifically prohibited.
6.1.10 Cu Ni fittings:
a. Socket welded and threaded fitting, o-lets and other small bore fittings shall be hot forged or cold forged followed by annealing. Only straight fittings like coupling can be directly machined from forged bar stock.
b. Seamless and welded fittings shall be manufactured as per EEMUA publication.
c. Repair weld acceptance criteria shall be as per EEMUA publication.
6.2
CHEMICAL COMPOSITION
6.2.1 Chemical composition shall be as per the relevant ASTM Specification unless restricted
otherwise, through this specification.
6.2.2 The carbon content shall be 0.23% maximum for Carbon steel / Low Temperature Carbon
steel and 0.03% maximum for Stainless steel.
6.2.3 Carbon equivalent (CE) as per equation below shall be 0.43 maximum for normalized or
quench and tempered CS /LTCS and low alloy steels.
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CE = %C +
%Mn 6
%Cr + %Mo + %V 5
%Ni + %Cu 15
Where “NACE” is specified, the chemical composition shall meet the requirements of NACE MR 0175 / ISO 15156. Sulphur content shall be less than 0.010%.
6.2.4 Chemical composition of the Cu-Ni material shall be as per corresponding EEMUA
publication
6.3
HEAT TREATMENT
6.3.1 Cold working, welding / weld repairs as applicable shall be carried out prior to final heat
treatment for CS / LTCS.
6.3.2 Cu-alloy fittings shall be annealed.
6.3.3 Stainless steel material shall be as per respective ASTM specification.
6.3.4 Seamless fittings or fittings forged from welded pipe shall be normalized or hot finished. Hot
finishing is only acceptable where the temperature is > 780°C < 945°C.
6.3.5 Fittings for sour service, (NACE), shall be normalized > 815°C or hot finished in the
temperature range of 845°C – 945°C.
6.3.6 CS Forged fittings and o-lets shall be supplied in normalized condition. Normalizing shall as
be specified per ASTM A961/ A 961M.
6.3.7 Heat treatment temperature, soak duration and cooling medium shall be stated on the material test certificate and be in accordance with the relevant ASTM Specification.
6.4
SURFACE FINISH
6.4.1 Surface finish of CS/LTCS forged fittings including o-lets shall be as per ASTM A961.
6.4.2 Surface finish of seamless and welded CS/LTCS fittings shall be as per ASTM A960.
6.4.3 Finished SS fittings shall be white pickled and passivated. Pickling is not required for
machined surfaces.
6.4.4 All surfaces shall be clean, smooth and free from defects.
6.5
OTHER SERVICE SPECIFIC REQUIREMENTS
6.5.1 Material, where specified for use in sour service, shall meet the requirements of NACE MR 0175 / ISO15156 Region 3 (for CS/LTCS) and as per Project Specification Doc. No: 200-20- CE-SPC-00025 “Specification for Topsides Material & Corrosion Requirements for Sour Service for COMP3 Project”.
6.5.2 The carbon equivalent number (CE) shall be ≤ 0.43 for normalized and ≤ 0.4 for Quenched
and Tempered (Q&T) products.
6.5.3 Cold-worked austenitic stainless steels are not allowed in sour service.
6.5.4 All nickel alloy fittings (UNS N06625) shall be annealed material only.
6.5.5 Carbon steel forged fittings manufactured to ASTM A105 / A105M where specified for use in
sour service shall have a grain size of #8 or finer per ASTM E112.
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6.5.6 Components made of low alloy steels in the Cr-Mo series, where specified for sour service are acceptable at 22 HRC maximum hardness, provided they are in the Quenched and Tempered condition.
6.5.7 Materials and fabrications shall be identified using one of the following methods where
specified for sour service use:
a. Raised lettering integral to hot forming operations
b. Low stress, interrupted dot stamps applied to external surfaces not exposed to the sour
environment
c. Die stamps applied at a temperature above 595 C (1100 F) or applied prior to final
heat treatment at a minimum temperature of 595 C (1100 F)
d. Indelible markers that are free of chlorides, sulphides, and heavy metals such as lead,
where stamping is not permitted or is impractical.
6.5.8 For additional requirement of Hardness Testing refer to Specification for Topsides Material & Corrosion Requirements for Sour Service for COMP3 Project (Doc.No. 200-20-CE-SPC- 00025) and Specification for Weld Overlay for Piping Materials for COMP3 Project (Doc. No. 200-20-CE-SPC-00033).
7 WELDING
7.1.1 All welds of welded fittings made from plate shall be using a filler metal.
7.1.2 Repair of weld is permitted for weld portion only. Repair welding of parent material is not
permitted.
7.1.3 The Welding procedure and welder’s qualification records shall be qualified in accordance with ASME B31.3 and ASME Sec IX Code with supplementary requirements. Welder qualification shall be carried out on same material grade as used in production. Any change of material or brand / make of welding consumables shall require requalification.
- Specification for Weld Overlay for Piping Materials for COMP3 Project (Doc. No.: 200-
20-CE-SPC-00033)
- Specification for Topsides Material & Corrosion Requirements for Sour Service for
COMP3 Project (Doc. No. 200-20-CE-SPC-00025)
7.1.4 WPS / PQR shall include the same examinations as for the production testing.
8
TESTING AND INSPECTION
8.1
GENERAL
8.1.1 Testing and examinations shall be carried out after the final heat treatment.
8.1.2 Test samples for production testing shall realistically represent the actual component and shall preferably be from specimen taken from heat treated or hot finished component to reflect the actual properties of component.
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8.1.3 Tensile test, chemical analysis, hardness tests as applicable for various materials shall be carried out for each heat and heat treatment load. The testing shall be carried out on the component with the heaviest wall thickness within the load.
8.2
HYDROSTATIC TESTING
8.2.1 Hydro-testing of fittings is not required. However, these components shall be suitable to withstand the pressure corresponding to minimum proof strength at room temperature without component distortion or failure.
8.2.2 Cu-Ni fittings shall meet the dimensional requirements as per EEMUA publication and shall be suitable to withstand pressure of 1.5 times design pressure without leakage and distortion.
8.2.3 The chloride content of test fluid for stainless and alloy steel fittings shall not exceed 30ppm.
8.3
CORROSION TESTING
8.3.1 Corrosion testing is not required for CS/LTCS/Cu-Ni fittings unless specified otherwise.
8.3.2 Manufacturer shall carry Intergranular corrosion tests for stainless steel in accordance with
practices A262, Practice E.
8.3.3
Inter-granular corrosion test in accordance with ASTM G28 Method “A” shall be carried out for Nickel Alloy 625 pipe fittings on each batch and heat of material. The acceptance criteria is 0.08mm/month (36mpy) as maximum corrosion rate.
8.3.4 For Nickel Alloy 625 pipe fittings, pitting corrosion tests shall be performed in accordance with ASTM G48 Method A. The test shall be performed at a temperature of 50° C (122° F) for 72 hours. The acceptance criteria shall be corrosion rate < 4.0 g/m2/24h and no visual pitting at 20x magnification.
8.3.5 Requirements for related testing are provided in Specification for Topsides Material & Corrosion Requirements for Sour Service for COMP3 Project (Doc. No. 200-20-CE-SPC- 00025)
8.4
TENSILE TESTING
8.4.1 Tensile tests shall be performed in accordance with individual ASTM specification and
EEMUA publication 234 for Cu-Ni Fittings.
8.4.2 Specimens shall be taken from one pipe representing each lot. Room temperature testing shall be carried out in transverse direction on flattened plate type specimens and in longitudinal direction on plate type specimens without flattening.
8.4.3 Where material is used at temperature above 120°C, the material shall undergo elevated temperature tensile tests according to ISO 6892-2 at design temperature, carried out in the transverse direction on flattened plate type specimens
8.4.4 For fittings tensile tests shall be performed on two tension test specimens per heat.
8.4.5 The acceptance criteria shall be according to corresponding ASTM Specification.
8.5
HARDNESS TESTING
8.5.1 Hardness tests shall be performed in accordance with ASTM E 18 for CS/LTCS and EEMUA
publication 234 for Cu-Ni
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8.5.2 Hardness measurements shall be carried out after final heat treatment.
8.5.3 For CS/LTCS welded fittings, the hardness of the heat affected zone shall be within the hardness limits for the base material. Maximum hardness shall not exceed 248 HV10 in the base material, weld metal or HAZ.
8.5.4 For components designated for use in NACE service maximum hardness limitations stated
in NACE MR 0175 / ISO 15156 shall apply.
8.6
IMPACT TESTING
8.6.1
Impact testing shall be carried out where specified in material description, purchase order or required as per ASME B31.3.
8.6.2 For LTCS Charpy impact testing shall be carried out as per ASTM E23 at – 46°C.
8.6.3 The Minimum Impact Test value: Min. 24 J average for 3 specimen; Min. 19 J for individual specimen at -29°C (or -46°C for LTCS). Test shall be performed according with relevant ASTM standard requirements.
8.6.4 All carbon steel fittings above 12.7 mm thick in Non-Sour Service shall be Charpy Notch Toughness impact test Type-A (V-Notch), tested at minus (-) 29°C unless otherwise stated in purchase order.
8.6.5 All carbon steel fittings for sour services shall be impact tested regardless the thickness
(testing temp. -29 °C).
8.6.6 Deleted.
8.7 METALLOGRAPHIC EXAMINATION FOR LTCS
8.7.1 Grain size evaluation in accordance with ASTM E112 shall be carried out at the same area as the location of specimens for mechanical testing. The area examined shall be a minimum of 10 x 10mm (or full section thickness for material thinner than 10mm). The microstructure on a suitably etched specimen shall exhibit a grain size of ASTM #8 or finer.
8.8
FERRITE CHECK AND METALLOGRAPHIC EXAMINATION FOR STAINLESS STEEL MATERIAL
8.8.1 Ferrite checks shall be made on the deposited weld metal in any length of pipe welded pipe
or welded fitting from each heat.
8.8.2 The ferrite content shall be determined according to ASTM E562 and shall be within the
range 4% - 10%.
8.9
HYDROGEN-INDUCED CRACKING (HIC) TESTING FOR CARBON STEEL AND LOW ALLOY STEEL
8.9.1 The plates used for carbon and low alloy steel fittings where specified for use in sour service shall be Hydrogen-Induced Cracking (HIC) resistant to meet the following acceptance criteria when tested in Solution A of NACE TM0284 for 96 hours and the results shall be included in the reports:
a. Crack Length Ratio (CLR) ≤ 10.0%
b. Crack Thickness Ratio (CTR) ≤ 1.5%
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c. Crack Sensitivity Ratio (CSR) ≤ 2%
8.9.2 Hydrogen-Induced Cracking (HIC) shall not be performed for all CRA cladded fittings.
8.10 OTHER TESTS FOR CU-NI
8.10.1 Flattening, Double Bend, Drift tests shall be performed as per EMMUA publication 234 as
applicable.
8.11
INSPECTION
8.11.1 Inspection and witnessing during various stages of manufacture, testing and final inspection
shall form a part of scope of purchase order.
8.11.2 Supplier shall provide free access to supplier / sub-supplier facilities for COMPANY or COMPANY’s representative or third party inspection agency to carry out inspections, test witnessing and final inspection as per agreed hold points of Inspection and Test Plan.
8.11.3 Where inspection and tests are required on randomly selected items, manufacturer shall make available a complete lot for COMPANY or COMPANY’s representative or third party inspector to select randomly the items to conduct inspect or test as required by purchase order. Manufacturer’s pre-selected items from lot and presented for inspection or testing will not be accepted.
9
NON-DESTRUCTIVE EXAMINATION (NDE)
9.1
GENERAL
9.1.1
Inspection and NDE shall be in accordance with applicable codes (i.e. ASTM) and the extent of NDE inspection shall meet as per NDE table.
9.1.2 VENDOR/SUB-SUPPLIER shall submit all NDE procedures to be used for manufacturing to EPC CONTRACTOR / COMPANY for review and approval. All NDE procedures shall be reviewed and endorsed by EPC CONTRACTOR.
9.1.3 All final NDE shall be performed after PWHT where applicable. That is, after performing all surface disturbance methods, for ex: grinding, machining, etc., in case of non PWHT.
9.1.4 The radiography testing (RT) or Ultrasonic testing (UT), If applicable to the design code being
applied, shall be performed after bending.
9.1.5 Extent of NDT examination shall be as per EPC CONTRACTOR / COMPANY specification,
approved ITP and NDE methods.
9.1.6 Welds on welded fittings shall be 100% radiography tested (Joint Quality Factor=1.0) as per ASME B31.3. Option of Ultrasonic examination in lieu of radiography is not acceptable for welded Fittings.
9.1.7 NDT Personnel performing inspection and interpretation of test results shall be certified to Level II by a Certification Body or Authorized Qualify Body in accordance with ISO 9712 or the ASNT Central Certification Program (ACCP). Personnel qualification to an employer- based qualification scheme as SNT-TC-1A may be accepted, but only with prior Purchaser approval and employer’s written practice is reviewed and found acceptable and the Level III
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is ASNT Level III or ACCP Professional Level III and certified in the applicable method. Purchaser appointed Level III or certifications are not acceptable.
9.2
VISUAL EXAMINATION
9.2.1 Each item shall be visually 100% examined externally and wherever possible internally.
9.2.2 VENDOR shall submit the NDE procedure for COMPANY approval.
9.3 MAGNETIC PARTICLE EXAMINATION
9.3.1 10% of total supplied fittings shall be subject to 100% MT examination to all accessible areas. Fittings in sour service NACE shall be examined in order to 10% per line item of relevant PO (in place of 10% of total supplied).
9.3.2 The acceptance criterion shall be in accordance with ASME Section VIII, Division 1 – Appendix 6. If discontinuities exceed limitations on any fittings examined during the initial 10% requirement, a further 10% shall be examined. If discontinuities are found during this period of testing, 100% of all fittings shall be examined.
9.3.3 NDT inspector qualification shall be minimum Level II, unless specified otherwise.
9.4
LIQUID PENETRANT EXAMINATION
9.4.1 Liquid penetrant examination shall be carried out where Magnetic particle test is not feasible.
Liquid penetrant testing shall be carried out after final machining.
9.4.2 LP testing shall be carried out according to ASME V Article 6. Acceptance criteria shall be
as per ASME VIII Div 1 Appendix 8.
9.4.3 NDT inspector qualification shall be minimum Level II, unless specified otherwise.
9.5
ULTRASONIC EXAMINATION
9.5.1 Ultrasonic examination where specified in purchase order or project specification shall be
carried out as per project specifications and relevant ASTM specifications.
9.5.2 Acceptance criteria shall be as per ASME VIII Div. 1 Appendix 12.
9.6
RADIOGRAPHY EXAMINATION
9.6.1 Radiographic examination where specified in purchase order or project specification shall be
carried out as per project specifications and relevant ASTM specification.
9.6.2 Acceptance criteria shall be as per ASME SEC VIII Div. 1 Appendix 4.
10 POSITIVE MATERIAL IDENTIFICATION
10.1.1 Positive material identification is not necessary for carbon steel and low temperature carbon
steel.
10.1.2 Positive material identification shall be carried out for elements of common alloy such as stainless steel, Ni-alloy components as per Project specification Doc no: 200-20-CE-SPC- 00034 “Specification for Positive Materials Identification (PMI) for COMP3 Project”. PMI Instrument used shall have latest calibration and shall be approved by COMPANY.
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11 CLEANING
11.1.1 Fittings made of the Austenitic stainless steel, Austenitic-Ferritic stainless steel and Alloy
UNS 06625 material shall be chemically cleaned by pickling and passivation.
12 MARKING AND TRACEABILITY
12.1.1 All fittings shall be marked in accordance with MSS SP-25, ASTM A 961.
12.1.2 All Components shall be marked to ensure full traceability to melt and heat treatment lot.
12.1.3 Components shall be marked as per the requirements of corresponding ASTM Specification
and project specification included in purchase order.
12.1.4 Marking shall include the size (NPS) schedule number or nominal wall thickness in millimeters, rating, charge or heat number and the manufacturer’s unique symbol and material specification. In addition, Contractors “Mark / Ident code” shall also to be included in the marking.
12.1.5 For additional requirements refer to Specification for Material Management and Traceability
Control Procedure Doc. No: COMP3-SPM-CC-PRC-00002.
12.1.6 Material identification shall be applied by the manufacturer directly to the item, using low
stress stamps or paint stencils.
13 CERTIFICATION
13.1.1 All material certifications shall be in accordance with the EN 10204 Type 3.1 in general and Type 3.2 for Sour services complying with NACE MR 0175/ISO 15156. Material Certificate shall show the chemical composition, mechanical test records, heat treatment records and any other records of supplementary tests specified in purchase order.
13.1.2 Material certificates in accordance with BS EN 10204 3.1 and 3.2 shall contain, as a
minimum, the following information as applicable:
a. Chemical analysis: All chemical elements for which a specification limit is set shall be reported. The carbon equivalent (CE) shall be calculated and included in the certification.
b. Mechanical properties, with results of the following mechanical tests where a
specification limit is set:
• Tensile tests (both ultimate and yield).
• Elongation Test.
• Bend Test.
•
Impact Test.
• Hardness Tests.
c. For welded fittings, the following information shall also be included. Specimens for impact testing shall be taken from three places: heat affected zone, weld metal, and parent metal:
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Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
• A statement of the heat treatment applied. Where heat treatment invokes supplementary NDE or mechanical tests, these are mandatory and shall be included in certification.
• Non-destructive test results.
• Hydrostatic and/or pneumatic test results.
• HIC Test Results (for welded pipes in sour service).
• Corrosion testing (IGC/Pitting etc)
13.1.3 TPA witnessing key tests during manufacturing shall be as per COMPANY approved
Inspection & Test Plan (ITP).
13.1.4 For items intended for sour service, the manufacturer shall provide a statement of compliance with NACE MR0175 / ISO15156 Specification for Sour Service in addition to the other material certificates required.
13.1.5 Certificates shall be referenced to the following:
a) Mill and/or manufacturer’s name and location.
b) The Purchase Requisition and Purchase Requisition Item tag numbers.
c) Heat number/ Heat treatment batch no. traceable to fitting marking.
d) Description of the pipes covered by the certificate, including the nominal pipe size,
schedule / thickness, etc.
e) Material type, specification, and grade (e.g. carbon steel ASTM A234 Gr. WPB).
f) Dimensional tolerances.
However, minimum content as specified on material standard shall also be included.
13.1.6 All CRA material shall be subjected to PMI.
13.1.7 Inter-granular corrosion (IGC) test in accordance with ASTM A262 Practice E shall be carried
out for Stainless Steel Fittings.
13.1.8 Inter-granular corrosion test in accordance with ASTM G28 shall be carried on UNS N06625.
13.1.9 All testing shall be done per heat/heat treatment batch in line with code requirement.
13.1.10 Test reports shall include heat treatment batch / lot number. The same shall be included
under Vendor document requirements.
14 HANDLING, PACKING, PRESERVATION AND STORAGE
14.1.1 Material handling, packaging, preservation and storage shall be as per purchase order requirements and as per Project specification Doc No.COMP3-SPM-PO-PRC-00005 “Handling, Storage, Packing & Preservation Procedure”.
14.1.2 Material handling shall ensure to prevent or minimize the possibility of contamination.
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Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
14.1.3 Use of bare steel hooks, chains or lifting forks without the use of protective insulating material
is not permitted for Stainless steel and alloy components.
14.1.4 Stainless Steel & CRA fittings shall be free iron contamination, such as unusual stains, discoloration, shall be verified by ferroxyl testing in accordance with ASTM A 380. Free iron contaminated areas shall be Pickled and passivated.
14.1.5 Stainless steel brushes designated for use on Stainless steel may be used for brushing or
descaling stainless steel products.
14.1.6 Preservation and protection of components shall be as per project specifications and
requirements of ASTM A700.
14.1.7 Bevelled end fittings shall be supplied with ends protected to avoid transport damages.
Fittings shall be shipped with end protectors to protect bevelled ends.
14.1.8 Fittings shall be marked and shipped in crates, grouped according to pressure/class rating
where possible.
14.1.9 Wooden boxes shall be fumigated and certified to requirements of International Standards
for Phytosanitary Measures No.15, ISPM 15.
14.1.10 SS fittings shall be wrapped and packed using Polyethylene sheets or appropriate material
to protect from inclusion of any dust, foreign particles etc.
14.1.11 Bends, elbows etc. shall be stored / placed to avoid any potential water retention. All fittings shall be clear of debris, thoroughly cleaned inside and out and free of any dirt and foreign matter before packaging.
15 DOCUMENTATION
15.1.1 Vendor shall certify that all components are in compliance with the relevant specifications, codes and project specification referred here-in and enclosed with purchase order.
15.1.2 List below gives the minimum required supplier documents. However, supplier shall submit all the documents / reports as a part of supplier documentation as per purchase order. All documents / certificates shall be signed by responsible person of supplier.
• Mill Certificate
• Mechanical Test Records
• Metallographic Test records
•
Impact Test Records
• Heat Treatment Records
• Hardness Test Records
• Non-Destructive Test Records (MP / LP / Radiography / UT) as applicable
• PMI test Records
• Pickling and Passivation Records (as applicable)
• Hydro-test Records (as applicable)
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Classification: Internal
NORTH FIELD PRODUCTION SUSTAINABILITY (NFPS) PROJECT
COMP3 - NFPS OFFSHORE RISER/WELLHEAD PLATFORM & INTRAFIELD PIPELINES PROJECT
SPECIFICATION FOR PIPE FITTINGS FOR COMP3 PROJECT
• Other test reports for Cu-Ni (as applicable)
•
Intergranular Corrosion Report (as applicable)
15.1.3 For additional requirements refer to Specification for Material Management and
Traceability Control Procedure Doc. No: COMP3-SPM-CC-PRC-00002.
16 NON-COMPLIANCE / DEVIATION:
If any of the requirements of this Specification cannot be met, VENDOR/SUPPLIER must provide written notification of non-compliances in “Technical clarification form and Deviation form” as attached in the Material Requisition, with explanations, in accordance with project instructions. This notification will be evaluated and must have COMPANY approval before final acceptance.
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Project: Q-32705 - Saipem COMP3 Folder: RFQ Files