Volume-II - GAIL

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B.1.2 Weld Seam of Welded Pipe APPENDIX - B REPAIR OF DEFECTS BY WELDING (NORMATIVE) Delete existing clause and replace with the following (i) Repair of the weld seam or heat treated region of EW pipe is not acceptable. (ii) Repair of weld seam of SAW pipe is not acceptable within 300mm of the bevel ends. (iii) The nature of any weld defect indicated by non-destructive inspection shall be ascertained before any repair is performed. Where necessary, complementary ultrasonic and radiographic inspections shall be carried out to characterize the defect. Repair welding to rectify pipe welds containing cracks is not permitted. (iv) Repairs to the weld seam shall be limited to three per pipe. The length of repair weld shall not exceed 5% of the total weld length on each pipe. (v) Weld repairs shall not be carried out after cold expansion or hydrostatic testing of pipe. (vi) Repair welding shall be executed only after specific approval by Purchaser Representative for each repair. (vii) No repair of a repaired weld is permitted. (viii) The repair weld shall be performed with a minimum of two passes. B.2 Procedure for Repair of Welding of Seamless Pipe and Parent Metal of Welded Pipe Delete existing section and replace with the following : Repair welding on seamless pipe and on parent metal of welded pipe is not acceptable. B.3 Procedure for Repair of Submerged-Arc and Gas Metal-Arc Welds B.3.1 The defective part of the weld shall be clearly marked on the pipe so that the defect can be easily located and repaired. B.3.4 (New) B.3.5 (New) Repair welding shall be executed using qualified procedures and in accordance with the requirements of Appendix C. The repaired area shall be non-destructively tested by RT, manual UT and MT. The Manufacturer shall also maintain a record of repairs carried out. The records shall include number, pipe identification number, welding procedure applicable and NDT details. B.4 Procedure for repair of Electric and Laser Welds : Repair welding of EW Welds is not acceptable. GAIL (INDIA) LIMITED CARBON STEEL LINE PIPES GAIL-TS-LINEPIPE-CS Page 23 of 37
APPENDIX - C C.2 Repair Welding Procedure Qualification C.2.2 Mechanical Testing C.2.2.3 Transverse Guided - Bend Test C.2.2.5 (New) C.2.2.6 (New) REPAIR WELDING PROCEDURE (NORMATIVE) The radius of male member of the jig used for guided bend tests shall be RA=2.25t, where “t” is specified wall thickness of pipe. For all pipes where fracture toughness test is specified, Charpy V-Notch impact test as specified shall be included in the Repair Welding Procedure Qualification. Hardness test as specified in para 6.2.6 of this specification shall be included in the procedure qualification. The location of the hardness measurements is to be indicated taking into account the new HAZ of the repaired area. GAIL (INDIA) LIMITED CARBON STEEL LINE PIPES GAIL-TS-LINEPIPE-CS Page 24 of 37
Page 1 and 2: JLPL ESSAR OIL LPG PIPELINE CONNECT
Page 3 and 4: SPECIAL CONDITIONS OF CONTRACT The
Page 5 and 6: 2.6.3 Deduction at Source 2.6.3.1 P
Page 7 and 8: 6.3 The materials, design, and work
Page 9 and 10: (iv) The Contractor shall adhere to
Page 11 and 12: 6.24 Insurance (For option - II & I
Page 13 and 14: GAIL (INDIA) LIMITED TABLE OF CONTE
Page 15 and 16: 3.4 Repair of defects on pipes reco
Page 17 and 18: 4.0 SCOPE OF SUPPLY 4.1 Material to
Page 19 and 20: all damages occurring and/or noted
Page 21 and 22: GAIL (INDIA) LIMITED Material Requi
Page 24 and 25: JLPL ESSAR OIL LPG PIPELINE CONNECT
Page 26 and 27: CONTENTS Sl. No. Description 1.0 SC
Page 28 and 29: 5.1.2 Welding Process 5.1.2.1.1 Con
Page 30 and 31: LSAW pipes shall be mechanically co
Page 32 and 33: 6.2.5 The minimum elongation of bas
Page 34 and 35: 6.2.7.3 (New) 6.2.7.4 (New) Procedu
Page 36 and 37: 7.8.2 Offset of Plate Edges 7.8.3 7
Page 38 and 39: 9.2.1 Heat Analysis Where the steel
Page 40 and 41: 9.8 Non - Destructive Inspection 9.
Page 42 and 43: 9.8.5.1.1 (New) Seamless Pipe : 45
Page 44 and 45: Location SEL - 072 Lamination Accep
Page 46 and 47: 12.3 (New) 12.4 (New) hard copy rec
Page 50 and 51: APPENDIX - F SUPPLEMENTARY REQUIREM
Page 52 and 53: Representative. SR 17.3 Acceptance
Page 54 and 55: ANNEXURE - I (NEW) MANUFACTURING PR
Page 56 and 57: (2) of these specimens shall be tes
Page 58 and 59: FIGURE 6.2.6.1 GAIL (INDIA) LIMITED
Page 60 and 61: FIGURE 6.2.6.2(b) GAIL (INDIA) LIMI
Page 62 and 63: FIGURE 7.8.3 GAIL (INDIA) LIMITED C
Page 64 and 65: CONTENTS SL NO. DESCRIPTION 1.0 SCO
Page 66 and 67: 13 ASTM G-42 : Tentative Methods fo
Page 68 and 69: week prior to its use, to establish
Page 70 and 71: Sl. No. Properties Units Requiremen
Page 72 and 73: (i) Details of plant(s), locations,
Page 74 and 75: A batch representing a normal produ
Page 76 and 77: (iii) Adhesive Layer Thickness Adhe
Page 78 and 79: (i) Surface cleanliness, surface ro
Page 80 and 81: specification. 8.6.2 The pipe tempe
Page 82 and 83: decision on rejection or re-blastin
Page 84 and 85: and/ or as per COMPANY representati
Page 86 and 87: 9.2.11 Coating and/ or adhesive sha
Page 88 and 89: (iii) In case the above tests do no
Page 90 and 91: 10.11 Cathodic Disbondment Test (i)
Page 92 and 93: 11.6 The lorries used for transport
Page 94 and 95: All repairs carried out to coating
Page 96 and 97: COATING SYSTEM/ MATERIAL PREQUALIFI
Page 98 and 99:
TABLE - 2 S.No Properties Frequency
Page 100 and 101:
Name of bidder PRICE SCHEDULE FOR S
Page 102 and 103:
ITEM NO OF MR ENCLOSURE TO PRICE SC
Page 104 and 105:
Notes Price Schedule for the Coatin
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
Notes Place of taking delivery of p
Page 112 and 113:
JLPL ESSAR OIL PIPELINE CONNECTIVIT
Page 114 and 115:
ITEM NO OF MR ENCLOSURE TO PRICE SC
Page 116:
PRICE SCHEDULE FOR COATED LINE PIPE
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Volume-II - GAIL

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