PWRJT26515 - Procurement and Replacement of suction Insulating Joint (IJ) in the MPPL Aburoad-Kot section at WRPL KOT.

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Supply of Monolithic Insulating Joint ( Size 22 INCH, Rating 600, Ends- Butt Welded)

Supply of Weld-o-Let- 22"x2" X 600# Weld-o-let,,

Hook-up of New Piping with existing process Piping: Isolating the section by closing the valve and providing positive isolation with the help of suitable plates / spectacle blind, Draing of the section, water flushing,Cutting of portion of existing piping of required length by Cold cutting machine (to be arraged by contractor)/ Opening of WNRF/SORF/Blind Flange trimming, grinding, beveling the edges, adding spool piece of required length/ Tee of the corresponding pipe size, thickness, adjoining and welding both the pipe ends ,or welding WNRF to pipe and bolting it with spool pipe mating flange including plugging of pipeline to restrict fumes, DP test, supply of all inputs such as labour, materials, equipment, consumables etc. necessary to perform and complete the work in all respect as per specification and instruction of the Site Engineer / EIC. NOTE: i) This is a high precision work which is to be executing in minimum time so reduce operation downtime period taking all safety precautions. Before start of work firm planning to be done in consultaion with EIC/ Site Engineer and contractor should mobile all required resources before start of work. ii) The job also include evacuation of product from the piping section after isolating the section and flushing with water and its disposal. iii) Prior to start of work Party to prepare the complete scheme of hook up job and submit it to EIC/Site Engineer for approval and should carry out the job as per approved procedure: 22" NB Piping

Piping Modification: Carrying out modification in already fabricated and/ or erected pipe due to change in drawing or as required by site condition, taking delivery of pipe, pipe fittings, steel flanges, spiral wound metallic gaskets & fasteners from designated location within station premises, transporting the same to site, cutting of pipe and / or weld joint , edge preparation, bending, lining up, welding and installing pipes and pipe fittings, flanges, elbows, equal and reducing outlet tees, concentric/eccentric reducers, y-type strainers, drain funnels, vent pipes and tapping for instruments such as pressure gauges, thermal relief valves, thermowells etc., installing above ground at all elevations connecting with equipment nozzles, valves, vessels, in line instruments etc., welded and threaded pipe line of different pressure ratings, flushing pipes by water after cleaning by compressed air, hydrostatic testing of each section to the specified pressure, draining the water, tie-in, final cleaning-up and dispoal of wastes and surpluses including providing all inputs such as labour, material, equipments and consumables necessary to perform the work (other than those specifically under taken by the owner in this contract) and completing the work in all respects in accordance with the drawings, specifications and instructions of Site Engineer / EIC. (Item is to be operated upon approval of SIte Enginner, Item covers only modification / rework jobs.) Pipe size 3 inch NB to 6 inch NB:

Radiographic Inspection: Inspection of welding by Digital Radiography (CR) or by conventional film radiographic method on all types of piping including processing of images/ films and interpreting the results of weld quality and reporting the same to the Site Engineer together with recommendations as to the acceptability or otherwise of the welds, submitting the finished radiographic films as may be approved or directed by Engineer-in-Charge inclusive of supply of all pesonnel, labour, materials, equipment, consumable, inputs, etc. and providing all services complete in all respects as envisaged in the contract documents. Note: i) Payment will be on the basis of number of welds of the respective size radiographed and shall be all inclusive for the complete job of radiographic inspection as envisaged in the contract document. ii) Radiography not involving full girth weld will be paid at 50% of the rate for full girth weld for the respective size. iii) For set-on type branch welding, the rate for radiography will be as applicable to the branch pipe size. iv) Repeat radiography of individual welds due to defective films or repair of welds shall be done at contractor's cost. v) In case where radiography is not possible, verification by utrasonic testing shall be done at contractors cost., vi) Magenetic particle inspection as and where" required shall be done at Contractors cost. vii) In case of conventional film radiography, all films shall be digitised and submitted to EIC/ Site Engineer in USB drives. viii) In case of Digital/ Computed Radiography, native files along with image/ pdf files shall be submitted to EIC/ Site Engineer in USB drives: 22" NB Pipe Joints RT

Surface preparation of piping, equipment and valves etc. by abrasive blast cleaning or with power wire brush (wherever blast cleaning is not possible) confirming to SA 2.5, making the surface free of dust, grease, mill scales etc., application of 1 coat x 50-75 microns DFT of Inorganic Zinc Ethyl Slicate Primer, followed by application of sealer coat of 30 micron DFT and intermediate coat of 150 micron DFT with surface tolerant epoxy mastic paint and 2 coats x 50 micron each DFT of Isocynate Aliphatic Poly Urethene (PU) by airless spray, with approved materials, paints, tools, tackles, consulambles, non-consumables, labour, equipment etc. to complete the job in all respects as per specification and instructions of the Site Engineer / EIC. The total DFT shall be minimum 330 microns.