GALSI FEED SPECIFICATION FOR BARRED TEES TABLE OF CONTENTS 1
INTRODUCTION............................................................. ..........................................................................................................................4 .............................................................4 1.1 1.2 1.3 1.4 1.5 1.6
2
CODES AND STANDARDS ................................................................ ...................................................................................................... ...................................... 6 2.1 2.2
3
General .................................................................. ...............................................................................................................................7 .............................................................7 Design.................................................................... Design .................................................................................................................................7 .............................................................7
MANUFACTURING REQUIREMENTS..................................................................... .................................................................................... ............... 8 4.1 4.2 4.3 4.4 4.5
5
Project Specifications and Data Data Sheets.......................................................................... 6 Codes and Standards........................................................................................................ Standards........................................................................................................6 6
DESIGN ................................................................. ...................................................................................................................................... ........................................................................ ... 7 3.1 3.2
4
Definitions ............................................................. ..........................................................................................................................4 .............................................................4 Abbreviations.................................................................... Abbreviations ..................................................................................................................... .................................................4 4 Holds........................................................... Holds ................................................................................................................................ ........................................................................ ... 5 Compliance ........................................................... ........................................................................................................................5 .............................................................5 Quality Conformance .................................................................. ........................................................................................................ ...................................... 5 Safety .......................................................... ............................................................................................................................... ........................................................................ ... 5
Manufacturing Procedure Specification .......................................................... ......................................................................... ............... 8 Process of Manufacture .............................................................. .................................................................................................... ...................................... 8 Welding.................................................................. Welding ...............................................................................................................................8 .............................................................8 Weld Neck Bevel ............................................................... ................................................................................................................ .................................................8 8 Guide Bar Material ............................................................ ............................................................................................................. .................................................8 8
MECHANICAL TESTING
9
GALSI FEED SPECIFICATION FOR BARRED TEES APPENDIX C – DATA SHEET FOR 26” AND 32” BARRED TEES ...................................................19 APPENDIX D – SCHEDULE OF TEES REQUIRED............................................................................20
GALSI FEED SPECIFICATION FOR BARRED TEES 1
INTRODUCTION GALSI (Societa di Studio e promozione per il Gasdotto Algeria - Sardegna - Italia SpA) has been formed to study the feasibility of a new gas pipeline system consisting of sections of onshore pipeline in Algeria, Sardinia and Italy, and connecting offshore sections. J P Kenny and Sofregaz have formed a Joint Venture (JV) in order to conduct PreFEED and optional FEED services to GALSI for the gas pipeline project from Algeria to Italy via Sardinia. The JV is led by J P Kenny. The work allocation between J P Kenny and Sofregaz for the pre-FEED and FEED activities is as follows: •
•
•
J P Kenny is responsible for the overall management and control of the project including overall responsibility for HSEQ; J P Kenny is responsible for the offshore pipelines and onshore pipelines including all pressure retaining facilities up to the interface between the pig traps and the terminal facilities; and Sofregaz is responsible for the terminal facilities (excluding pig traps) and will in addition be responsible for all electrical, instrumentation, SCADA and data communications for the whole pipeline system.
GALSI FEED SPECIFICATION FOR BARRED TEES NDT OD PCN UNS 1.3
Non-destructive Testing Outside diameter Personnel Certification in Non Destructive Testing Unified Numbering System
Holds
All Holds released.
1.4
Compliance
Compliance by the SUPPLIER with this specification shall not relieve him of his responsibilities to supply Barred Tees suited to meet the specified requirements and/or local codes governing health and safety. The SUPPLIER shall notify the COMPANY in writing, of any proposed deviation from this Specification. The COMPANY's decision in respect of concession requests will be final. The SUPPLIER shall continually verify the quality and fitness for purpose of the Barred Tees, and shall propose appropriate actions/measures if any aspects of manufacture are found to be unsatisfactory.
GALSI FEED SPECIFICATION FOR BARRED TEES 2
CODES AND STANDARDS The latest revision of the following codes and standards shall be used unless otherwise indicated by the COMPANY.
2.1
Project Specifications and Data Sheets
000-B-5-0507 010-P-1-0227 010-P-1-0236 010-P-1-0237 010-P-3-0081 100-L-1-002 400-L-1-002
2.2
Onshore and Offshore Pipelines Material Take Off Specification for Line Pipe and Casing Carbon Steel Flanges and Fittings Specification Supplier Document Requirement List for Barred Tees Design Criteria for Pipeline Detailed Design and Materials Selection Piping Material Classes Unit 100 – Koudiet Draouche General Specification for Plant Pipes and Pipe Fittings – Piping Classes
Codes and Standards
ASME B16.9
Factory-Made Wrought Buttwelding Fittings
ASME BVPC Section V
Boiler and Pressure Vessel Code Section V - NonDestructive Testing
ASME BVPC Section VIII
Boiler and Pressure Vessel Code, Section VIII Division
GALSI FEED SPECIFICATION FOR BARRED TEES 3 3.1
DESIGN General
The Barred Tees shall be manufactured, tested and inspected in accordance with specification 010-P-1-0236 Carbon Steel Flanges and Fittings Specification and the requirements of this Specification. The Barred Tees shall meet the requirements of the design and operating data given in the Design Criteria for Pipeline Detailed Design and Material Selection, 010-P-30081. The tees shall be compatible for welding to the pipeline and branch materials listed in Appendices B and C. 3.2
Design
The tee shall be forged and designed according to ASME B16.9. It is required that the onshore gas transmission system shall have a constant internal diameter of 1184.3mm. Internal diameter for launcher and receiver bypass lines for offshore pipelines (including short onshore sections) shall be as specified in Appendix C. Contractor shall ensure that the method of attaching the bars shall take into account expansion of the Tee.
GALSI FEED SPECIFICATION FOR BARRED TEES 4 4.1
MANUFACTURING REQUIREMENTS Manufacturing Procedure Specification
Barred tees shall be manufactured in accordance with 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. 4.2
Process of Manufacture
The manufacturing process, material requirements and heat treatment shall be in accordance with specification 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. 4.3
Welding
All welds on the body of the tee shall be qualified in accordance with ASME BVPC Section IX. Acceptance criteria for welding procedure qualification tests for welds on the body of the tee shall be as per the requirements of 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. Welding and repair of pup-piece welds shall be in accordance with 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. All welds on barred tees for guide bars and attaching guide bars to the branch of the tee shall be full penetration, continuous around the guide bars and shall consist of at
GALSI FEED SPECIFICATION FOR BARRED TEES 5 5.1
MECHANICAL TESTING General
Mechanical testing including tensile, impact and hardness testing shall be in accordance with 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. 5.2
Re-tests
If any test piece fails to meet the specified requirements, two additional specimens may be taken. If either of the tests fail to meet specified requirements, the forging or batch of forgings represented by the test shall be deemed to have failed test and be rejected. Alternatively, and with the prior approval of the COMPANY, the SUPPLIER may re-heat treat the forgings and repeat all prescribed mechanical tests. Such repeated treatment may be carried out no more than twice.
GALSI FEED SPECIFICATION FOR BARRED TEES 6
HYDROSTATIC TESTING OF TEES Hydrostatic testing of completed tees shall be carried out according to ASME BVPC Section VIII Div 1. Hydrotesting shall not be required, provided the SUPPLIER can demonstrate by calculation to the satisfaction of the COMPANY that fittings are capable of withstanding the hydrostatic test pressure specified . The type of calculations would include: wall thickness, reinforcement of the tee opening and FEA where applicable.
GALSI FEED SPECIFICATION FOR BARRED TEES 7 7.1
INSPECTION AND NON-DESTRUCTIVE TESTING General
Non-destructive testing shall be carried out after all processing and heat treatment in accordance with 010-P-1-0236, Carbon Steel Flanges and Fittings Specification, this Specification, and procedures approved by the COMPANY.
7.2
Visual Inspection
Completed tees shall be 100% visually inspected to ensure freedom from surface defects and to ensure compliance with dimensional tolerances (refer to Section 9).
7.3
Magnetic Particle Inspection
Magnetic particle inspection shall be performed in accordance with ASME BVPC Section V, over the entire inner and outer surfaces of tees, including all weld seams. This shall also include guide bar welds. Acceptance criteria shall be according to ASME BVPC Section VIII Division 1, Appendix 6 except that indications interpreted as cracks or other linear defects shall be unacceptable, regardless of length.
GALSI FEED SPECIFICATION FOR BARRED TEES 8 8.1
REPAIR OF DEFECTS General
No repair work shall proceed without the approval of the COMPANY. Repair of defects shall be in accordance with 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. 8.2
Surface Repairs
Surface defects such as slivers, sharp notches, gouges, scores, pits and machinery marks may be removed by grinding or machining, provided the section thickness is maintained within specified tolerances. 8.3
Repair of Bar Attachment Welds
Weld repair of defective welds shall be permitted using qualified weld repair procedures approved by the COMPANY. Weld repair procedures shall be qualified in accordance with ASME BVPC Section IX. Completed weld repairs shall be subject to non-destructive testing, after stress relief, in accordance with Section 7 of this Specification.
GALSI FEED SPECIFICATION FOR BARRED TEES 9
DIMENSIONS The dimensions and tolerances of tees shall be in accordance with ASME B16.9. In addition, the internal bore shall be of constant diameter (as defined in Appendices B and C) for the passage of pigs.
GALSI FEED SPECIFICATION FOR BARRED TEES 10 MARKING, COATING AND PROTECTION 10.1
Marking
The barred tee shall be marked in accordance with the requirements of 010-P-1-0236, Carbon Steel Flanges and Fittings Specification. 10.2 Coating
Unless otherwise specified by COMPANY, the barred tee shall be grit blasted and primed as follows. •
•
Blast clean to ISO 8501-1, Grade Sa 2½; SUPPLIER shall propose primer system for COMPANY approval for protection of the tee during transport and handling.
GALSI FEED SPECIFICATION FOR BARRED TEES 11 HANDLING AND TRANSPORT Care shall be taken to ensure that mechanical damage is not caused during handling and transport. Weld bevels shall be suitably protected against damage during handling and transport. The ends of all barred tees shall be sealed to prevent the ingress of dirt or moisture. Care shall be taken to ensure that wire ropes, chains or other metallic handling devices do not come into contact with the tee. It is recommended that broad band, non-metallic slings to be used to load/unload and support the tee when in transit. The protection, packing, marking and shipping shall be subject to the approval of the COMPANY.
GALSI FEED SPECIFICATION FOR BARRED TEES 12 DOCUMENTATION AND CERTIFICATION 12.1 Documentation
Documentation requirements shall be as indicated in 010-P-1-0237 Supplier Document Requirement List for Barred Tees.
GALSI FEED SPECIFICATION FOR BARRED TEES APPENDIX A – REQUIREMENTS FOR GUIDE B ARS
GALSI FEED SPECIFICATION FOR BARRED TEES APPENDIX B – DATA SHEET FOR 48” BARRED TEES Property Material Grade Manufacture Sour Service NACE MR-01-75 Product flowing in tee Pipeline Material Branch Material Pipeline Design Code Pipeline Nominal Outside Diameter Pipe Inside Diameter (Wall Thickness) K=1.75 End Diameter Tolerance Centre to End Dim Tolerance Wall Thickness Tolerance Specified Minimum Tensile Strength Specified Minimum Yield Strength Maximum Hardness Maximum Operating Pressure Design Pressure (DP) Shop Hydrotest Pressure Minimum Field Hydrotest Pressure
Units -
mm
48” Pipeline ASTM A694 F65 Hot forging No Dry Natural Gas EN 10208-2 L450MB API 5L grade X 52 / EN 10208-2 L360 DM24/11/84 and EN 14161 1224
mm
1184.3 (20) Constant ID Required
mm mm mm MPa MPa HV Barg Barg
±4.8 ±4.8 ±2 535 450 260 75.0 78.8 See Section 6 of this Specification 1.3 x DP
Yes/No
Reference
400-L-1-002
1 ASTM B16.9 ASTM B16.9
1 2
3
GALSI FEED SPECIFICATION FOR BARRED TEES APPENDIX C – DATA SHEET FOR 26” AND 32” BARRED TEES Property Material Grade Manufacture Sour Service NACE MR-01-75 Product flowing in tee Pipeline Material
Units Yes/No
Branch Material
26” and 32” Pipelines ASTM A694 F70 Hot forging No Dry Natural Gas DNV 485 IFDU API 5L Grade X65
Pipeline Nominal Size (NPS) Pipeline Design Code
26”
32”
ASME B31.8 & DM24/11/84
DM24/11/84
Pipeline Nominal Outside Diameter
mm
645.8
809.2
Pipe Inside Diameter (Wall Thickness)
mm
585.8 (30.0)
747.8 (30.7)
End Diameter Tolerance Centre to End Dim Tolerance Wall Thickness Tolerance Specified Minimum Tensile Strength Specified Minimum Yield Strength Maximum Hardness
mm mm mm MPa MPa HV
±4.8 ±4.8 ±2 570 485 260
Reference
100-L-1-002, 400-L-1-002
ASTM B16.9 ASTM B16.9
GALSI FEED SPECIFICATION FOR BARRED TEES APPENDIX D – SCHEDULE OF TEES REQUIRED Location
Description
RUN Pipeline Nominal Diameter inch
Internal Diameter mm
BRANCH Wall Thickness mm
P&ID
Outer Diameter inch (mm)
Wall Thickness (mm)
Koudiet Draouche
Launcher/Receiver Bypass
26”
585.8
30.0
24” (610)
34.93
300-H-0-0001
Porto Botte
Launcher/Receiver Bypass
26”
585.8
30.0
26” (660)
33.00
300-H-0-0002
Porto Botte
Launcher Bypass
48”
1184.3
20.0
48” (1219)
31.75
500-H-0-0001
Mid Point Pig Station
Receiver Bypass
48”
1184.3
20.0
48” (1219)
31.75
550-H-0-0001
Mid Point Pig Station
Launcher Bypass
48”
1184.3
20.0
48” (1219)
31.75
550-H-0-0001
Olbia
Receiver Bypass
48”
1184.3
20.0
48” (1219)
31.75
500-H-0-0002
Olbia
Launcher Bypass
32”
747.8
30.7
32” (813)
45.00
700-H-0-0001
Piombino
Receiver Bypass
32”
747.8
30.7
32” (813)
45.00
700-H-0-0002
Section Valves
Valve Bypasses
48”
1184.3
20.0
16” (406)
12.70
500-P-1-0001
NOTES 1.
Branch materials and wall thicknesses are in accordance with relevant facility piping materials specifications, 100-L-1-0002, 400-L-1-0002 and 600-L-1-0002.
2.
Olbia materials specification (600-L-1-0002) does not show 48 inch piping in the 6CP1 class, therefore the Porto Botte materials specification (400-L-1-0002) has been used.
3.
Piombino Materials Specification (900-L-1-xxxx) is not available, so wall thickness for 32” 15CP1 class has been selected as per Olbia materials specification (600-L-1-0002).
4.
Quantities are shown in the Onshore and Offshore Pipelines Material Take Off, 000-B-5-0507.
010-P-1-0233 Barred Tees Specification Rev 03
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