Volume-II of IV - GAIL

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MECON LIMITED Delhi PROCESS & PIPING DESIGN SECTION TECHNICAL SPECIFICATION FOR FLANGES AND WELDED FITTINGS (SIZE 450mm (18”) NB AND ABOVE) TECHNICAL SPECIFICATION NO. : MEC/TS/05/62/026 REV-0 PAGE 5 OF 9 5.0 DESIGN AND MANUFACTURE 5.1 Flanges such as weld neck flanges and blind flanges shall conform to the requirements of ASME B16.5 upto size DN 600mm (24”) excluding DN 550mm (22”), MSS-SP-44 for sizes DN 550mm (22”) and ASME B16.47 for sizes DN 650mm (26”) and above. 5.2 Spectacle blind and Spacer & blind shall conform to the requirements of API 590 upto sizes DN 600mm (24”). For sizes above DN 650mm (26”) and above, Spectacle blind and Spacer & blind shall conform to Manufacturer’s standard. 5.3 Type, face and face finish of flanges shall be as specified in Material Requisition. 5.4 Fittings such as tees, elbows and reducers shall be either welded or seamless type. All fittings shall comply with the requirements of MSS-SP- 75. 5.5 Tees shall be manufactured by forging or extrusion method. Stub-in or pipe to pipe connection shall not be used in the manufacture of tees. The longitudinal weld seam shall be kept at 90° from the extrusion. Fittings shall not have any circumferential weld joint. 5.6 All butt weld ends shall be bevelled as per ASME B16.5/ MSS-SP-44/ ASME B16.47 as applicable for flanges and MSS-SP-75 for fittings. 5.7 The reinforcement of inside weld seam shall be removed for a distance of 100mm from each end of welded fittings. 5.8 All welds shall be made by welders and welding procedures qualified in accordance with provisions of ASME Sec. IX. The procedure qualification shall include impact test for weld/ heat affected zone, hardness test and guided bend test and shall meet the requirements of Clauses 4.4, 4.5 and 4.6 of this specification, respectively. \\Akjha\work contrac\standard TS for Pipe Line WC (Vol-II) MASTER FOLDER\26 flange & welded fittings 18 inch & above\Specification for Flanges & Welded Fittings 26.doc
MECON LIMITED Delhi PROCESS & PIPING DESIGN SECTION TECHNICAL SPECIFICATION FOR FLANGES AND WELDED FITTINGS (SIZE 450mm (18”) NB AND ABOVE) TECHNICAL SPECIFICATION NO. : MEC/TS/05/62/026 REV-0 PAGE 6 OF 9 5.9 Repair by welding on flanges and parent metal of fittings is not allowed. Repair of weld seam by welding shall be carried out by welders and welding procedures duly qualified as per ASME Section IX and API 1104 and records for each repair shall be maintained. Repair welding procedure qualification shall include all tests which are applicable for regular production welding procedure qualification. 6.0 INSPECTION AND TESTS 6.1 The Manufacturer shall perform all inspections and tests as per the requirement of this specification and the relevant codes, prior to shipment at his works. Such inspections and tests shall be, but not limited to, the following : 6.1.1 All fittings and flanges shall be visually inspected. The internal and external surfaces of the fittings shall be free from any strikes, gouges, burrs and other detrimental defects. 6.1.2 Dimensional checks shall be carried out on finished products as per ASME B16.5/ MSS-SP-44/ ASME B16.47 as applicable for flanges and ASME B16.9/ MSS-SP-75 as applicable for fittings and as per this specification. Fittings not covered in MSS-SP-75 shall be checked as per Manufacturer’s standard. 6.1.3 Chemical composition and mechanical properties shall be checked as per relevant material standards and this specification, for each heat of steel used. 6.1.4 The non-destructive inspection shall be carried out as given below : a) All butt and repair welds for welded fittings shall be examined 100% by radiography. Acceptance limits shall be as per API 1104. b) When elbows of size > 18” NB are manufactured, the first elbow of each radius, diameter and wall thickness shall be ultrasonically checked for sufficient wall thickness in areas where a minimum wall \\Akjha\work contrac\standard TS for Pipe Line WC (Vol-II) MASTER FOLDER\26 flange & welded fittings 18 inch & above\Specification for Flanges & Welded Fittings 26.doc
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GAIL (India) Limited TENDER DOCUMEN
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MECON LIMITED REGD. OFF: RANCHI (BI
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MECON LIMITED REGD. OFF : RANCHI (B
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Pipe Size, Out Side Diamter- Inches
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SPECIFICATION FOR HYDROSTATIC TESTI
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SPECIFICATION FOR MAJOR WATER CROSS
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SPECIFICATION FOR PIPING FABRICATIO
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Pipe Size, Outside diameter Inches
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CONTENTS Sl. Description Page No. N
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1.0 GENERAL 1.1 These technical spe
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completion and testing on system ar
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5.1.2 Mill scale, rust, rust scale
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5.2.3 Maual or hand tool cleaning M
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c. Ingredients shall be kept proper
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the bottom. This work shall be done
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S. NO. DESCRIPTION 1. MANUAL OR HAN
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S. NO. DESCRIPTION 3. BLAST CLEANIN
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6.0 PAINT MATERIALS Paint manufactu
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PAINT MATERIALS TABLE NO.: 6.2FINIS
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Notes: 1. Covering capacity and DFT
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TABLE 7.1: PRE-ERECTION/ PRE-FABRIC
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NOTE 2 : FOR EXTENAL SURFACE OF RCC
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TABLE 10.0: FIELD PAINT SYSTEM FOR
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TABLE 12.0 : FIELD PAINT SYSTEM FOR
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TABLE 14.0 : PAINTING UNDER INSULAT
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17.0 STORAGE 17.1 All paints and pa
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. Intersection points & change of d
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20.3 Method of Camouflaging 20.3.1
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it would be in the interest of the
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24.5 Tests required for evaluation
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S. No. MANUFACTURER NAME LIST OF RE
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S. No. MANUFACTURER NAME LIST OF RE
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S. NO. LIST OF RECOMMENDED MANUFACT
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SPECIFICATION FOR REPAIR OF PIPELIN
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MECON LIMITED DELHI PROCESS & PIPIN
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SPECIFICATION FOR DOCUMENTATION FOR
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1.0 SCOPE 1.1 This specification co
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2.3 Monthly • Priced variations
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- Major water crossings - Waste dis
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- Location of further appurtenance
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Document2 SPECIFICATION FOR PIPELIN
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SPECIFICATION FOR VENTS, DRAINS AND
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1.0 SCOPE TABLE OF CONTENTS 2.0 COD
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The last letter indicates type of m
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10.0 GASKETS 10.1 Spiral wound meta
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13.7 Unless specified otherwise. Va
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determination of surface profile -
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) Peel Strength shall be as follows
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accordance with ISO:8503-3 or ISO:8
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4.3 Application Procedure for Corro
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Company Representative reserves the
Page 408 and 409: SPECIFICATION FOR 3-LAYER POLYETHYL
Page 410 and 411: 1.0 SCOPE This specification covers
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Page 422 and 423: specified temperature i.e. one at e
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Page 487 and 488: e. Fabricated steel structurals, pi
Page 489 and 490: 4.0 DETAILS OF HSE MANAGEMENT SYSTE
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OBSERVATION OF QUALITY ASPECTS Job
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SPECIFICATION FOR CALIPER PIGGING S
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1.0 INTENT 2.0 OBJECTIVE SPECIFICAT
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6.0 GAUGE PIG RUN Contractor to car
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- Valves or any partially closed va
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geometry inspection to generate val
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PIPELINE DETAILS NOMINAL DIAMETER m
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CONTENTS Sl.No. Description Page No
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) SIS - 055900 : Pictorial surface
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Property Test Method Condition Requ
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35mm The sleeve shall be installed
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4.1 General a) The application proc
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4.3 Procedure a) The application pr
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5.2.3 All the coated joints shall b
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8.0 REPAIR OF PIPE COATING DEFECTS
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MECON LIMITED Delhi PROCESS & PIPIN
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MECON LIMITED REGD. OFF RANCHI PROC
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PROCESS & PIPING DESIGN SECTION MEC
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C O N T E N T S Sl.No. Description
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e measured. Hence the depth of meas
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6.7 Graphical representation of exi
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GAIL (India) Limited TECHNICAL SPEC
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1.0 SCOPE Cathodic Protection Power
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limit feature shall be provided in
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e) Pipeline under protected f) Auto
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- Dimensional checking - Proper mou
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Volume-II of IV - GAIL

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