invitation for bids - Gail

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iv)Reducers will be considered with larger diameter as per the IS14164:199411.0 TESTS AND INSPECTIONS:Contractor shall submit the test certificates with every batch ofinsulation materials supplied for insulation work in the plant .12.0 MATERIALS:-a) All materials shall be of high quality and good appearance.b) Insulation materials shall be of low chloride content, chemically inert,non sulphurous, rot proof, vermin proof, impervious to hot water andsteam, non injurious to health and non corrosive to steel andaluminum (even if soaked) in water at ambient temperature forextended periods.c) The use of insulation or finishing materials containing asbestos in anyform is not permitted.d) Insulation and jacketing materials backed with paper or otherflammable materials is not accepted.e) Non water absorbing insulation like polyisocynurate and cellular glassare recommended for services upto 125 0 C . Water absorbing insulantslike fibrous insulants and calcium silicate can be used for alltemperatures except for electrical pressed pipes. But for lowtemperatures (i.e. upto 125 0 C ) services suitable moisture barrier shallbe used.f) Rock and glass wool shall be a pre formed insulation and shall be oflong fibrade rock or glass materials processed from a molten state intofibrous form bonded with a binder and suitable for the intendedoperational temperature range from ambient to 550 0 C. Slagwool is notacceptable.g) The density of finished insulation shall be within 140 Kg/m 3 to 150Kg/m 3 .g) Insulation material shall strictly confirm to: Metal mesh coveredbonded mineral fibre blanket and blanket type pipe insulation: IS:8183: Latest issue. Faced on one side with 20 mm-galvanized No.22SWG. Wire mesh, stitched through with 22 SWG galvanized lacingwire: Mattress for lined covers shall be faced on one side with 20mmgalvanized 22 SWG wiremesh stitched through with 22SWGgalvanized lacing wire.h) Insulation shall confirm to following requirement and shall be testedand test certificates on representative samples furnished to GAIL asper IS 8183: / IS: 9842 (latest issue).22
i) Weather Protection Jacket.Aluminum jacketing shall be used as weather protection overinsulation unless otherwise specified and shall be ASTM B209 alloy3003 H16 or IS 737 designation 31000 (Old NS3) condition H3 for flatsheets. Cladding shall be coated on the side in contact with theinsulation with a bitumen anti-corrosive paint.For all piping - 0.71mm (22 SWG) Flat.j) Ancillary Materials:For securing fibrous insulation on piping: Band 22 SWG thick x12mm (min) wide, Aluminum.On equipment: Band 22 SWG Thick x 20mm wide Aluminum.k) Rivets required for metal jacket securement shall be the expanding theAluminum "POP" blind eye type, 9.5 mm long x 5 mm diameter.l) Screws required for metal jacket securement shall be cadmium platedsteel self tapping type A no.8 dia x 12mm long to BS 4176 completewith neoprene washers under the head or GI screws if cadmiumplated screws are not available.m) To ensure perfect water proofing all the cladding joints shall bepacked with sealing materials which may either be in the form of aelastomeric sealing compound or fibre based bituminous felt strips.13.0 APPLICATION:-a) Surfaces to be insulated and shall be thoroughly cleaned dried andmade free from loose scale, oil or grease. It shall be the contractor'sresponsibility to remove loosely adhering scale and dirt beforeapplying insulation.b) Corrosion Prevention: Carbon steel and low alloy piping andequipment with normal operating temperature of 125 0 C and belowshall be protected against corrosion by painting with a 20 microns(min) dry film thickness of heat resistant Aluminum paint suitable forthe above temperature.c) Insulation shall be finished, bevelled and weather proofed at allterminal points where it is required to remove bolts etc. withoutdamage to the insulation.d) Double layer: Insulation shall be required when the insulationthickness is greater than 75mm. Insulation installed in two or more23
Page 3 and 4: GAIL (India) LimitedGIDC INDUSTRIAL
Page 6 and 7: id in the format made available in
Page 8 and 9: A. General1. Scope of Bid2. Eligibl
Page 10 and 11: Section VIGeneral Conditions of Con
Page 12 and 13: equest and the responses thereto sh
Page 14 and 15: Part ‘III’ - BID SECURITY in or
Page 16 and 17: considered as binding upon the bidd
Page 18 and 19: 41. Rejection CriteriaBidder's Bid
Page 20 and 21: SECTION-IIISCOPE OF SERVICES &SPECI
Page 22 and 23: one location as directed by the EIC
Page 26 and 27: layers shall be staggered joint con
Page 28 and 29: c) The adhesive to be use for bondi
Page 30 and 31: f) Insulation of piping shall be st
Page 32 and 33: authorities and shall keep the Owne
Page 34 and 35: SECTION - IVFORMSANDFORMATS32
Page 36 and 37: F-2ToBID FORMSUB: INSULATION WORK I
Page 38 and 39: F-4PROFORMA FOR BANK GUARANTEE FOR
Page 40 and 41: F-5ADETAILS OF SIMILAR WORK DONE DU
Page 42 and 43: F-6ADECLARATIONTo,GAIL( India) Limi
Page 44 and 45: F-8COMMERCIAL QUESTIONNAIRESUB: INS
Page 46 and 47: F- 10OFFER / APPLICATION FORMATRef:
Page 48 and 49: SCHEDULE OF RATESSECTION - VSlnoDes

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