Tender For providing of custom bid for services - custom bid for services - short term contract for relocation of high pressure drain valves from 0 ml elevation to 6 ml elevation in tps ii expn- 1.0 cutting and removing valves from the drain header at 0ml elevation. 2.0 the balance cut portion in the drain line where the valve was cut and removed to be welded with appropriate spool piece by ibr welder. 3.0 the drain lines coming from different locations to be re-routed to a common location at 6ml to make a valve station. 4.0 all valves removed from 0ml to be welded at the valve station at 6ml. 5.0 the gland packing of valves if required should be replaced by the contractor, the required gland packing will be provided by nlcil. 6.0 the vendor shall quote rates for re-locating each size of valve individually. 7.0 to facilitate a valve station at 6m drain lines would require re-routing. for re-routing nlcil will provide the required tubes. the bends required for re-routing should be fabricated by the vendor. the vendor may take the tubes for bending to his own facility for bending after submitting indemnity bond for value equal to that of the material. 8.0 for re-routing amount will be paid for per joint welded and per bend fabricated and used, nothing extra shall be paid. 9.0 for estimation it may be assumed that each line would require 10 joints (for replacing valves and re-routing line) and 3 bends. however payment will be made for only the executed quantities. 10.0 the path of re-routing will be decided by nlcil. 11.0 after the work is competed hydro-test will be conducted at design pressure ( for sh 203 ksc and for rh 52 ksc) and if any defects observed in work should be corrected by the vendor free of cost. 12.0 100% radiographic testing (except socket weld joints) should be carried out on all ibr joints (including repair/re-welds), the rate for welding should be inclusive of radiographic testing and nothing extra will be paid for radiographic testing. 13.0 the results of the radiographic testing will be checked by nlcil engineers and if any defects are found the re-welding should be carried out at free of cost. 14.0 all material required for work will be handed over to the vendor at nlcil stores only, the transportation of these material from stores to the work site is in the contractors scope. 15.0 removal of all scrap formed as a result of the work. 16.0 scope of the contractor regarding materials. 16.1 the following are in the scope of the contractor regarding the materials required to carry out the work. 16.2 all the tools and tackles required, namely winches, welding machines, cutting set, hoses, welding accessories, air hoses, pipe cutting machines ,grinding machines, 16.3 mother oven, normal oven, flask, slings, chain & pulley blocks, d-shackles, wire ropes, temporary supports, wooden planks, temporary platform grills, scaffolding pipe, clamps, fasteners & materials, blow torch, edge preparation machine, exhaust fans (for evacuation of welding fumes) and any other items required for the work 16.4 consumables such as gas cylinders (pure argon(99.999%), acetylene, lpg ,oxygen etc,),tungsten electrodes ,purging paper and others consumables (cotton waste, emery sheets, paint markers, thermo chalk, buffing wheels, die penetrant kits, kerosene, grinding wheels, cutting wheels, hacksaw blades ,etc.) required for the works. 16.5 personal protection equipment (ppes) such as safety shoes, nose mask, helmet, hand gloves, goggles, safety belts, ladders, crawling boards, safety net, full body safety belt, and any other material required to ensure the safety. 16.6 arrangement of electrical supply distribution for their electrical utilities along with necessary electrical distribution panels, cables, protection, safety relays, earthing etc. 16.7 arrangement for lighting at the work spot along with lighting equipment such as power cable, transformers, hand lamps 24 volt of sufficient quantity. 16.8 the contractor should furnish proper
14 May, 2024
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