MID/J/80

Repairs to 5 cusec x 10 m head end suction pump of unit no. II along with allied electro-mechanical works at LIS Rathua. A) Decoupling of 5cusec x 10m head end suction centrifugal pump of unit no.2 at LIS Rathua from the motor assembly and dismantling the pump from the base frame & from suction side/dismantling by way of cutting the rusted nuts & bolts with cutter. Carriage of the dismantled 05 cusec end suction centrifugal pump to the nearest roadside, using manual labour, head load, loading in transport vehicle, carriage to the workshop in the mechanical transport for repairs. Repair to 5 cusec end suction pump set at workshop by way of dismantling and extraction of damaged internal parts. Providing, turning, rethreading & finishing to accurate size of new pump shaft as per specifications of old damaged pump shaft. Repair to the impeller by way of welding/brazing, machining, making key ways slots on the impeller and fitting of the same on the pump shaft. Providing and fitting of 2 no.s new bearings on driving and non driving end of the pump as per sample, neck rings, 1 no. shaft protection sleeve, bushes, new gland studs repair to bearing housing, gland plates and applying sufficient amount of grease to avoid excessive wear and tear, gland packing as per requirement. Repair to the bearing housing on driving and non-driving ends of pumping unit by welding turning and fitting of bush to make inner dia. of bearing housing suitable for fitment of bearings. Complete assembling of pump set after carrying out necessary repairs. Shifting back to the LIS Rathua and then fitting/reinstallation at the base frame, coupling with the motor by making proper alignment and testing on partial/full load. Complete job including cost of material, carriage charges, skilled / semi skilled labour, tools and tackles charges etc. B) Complete rectification of the damaged L&T MU-G 50 Star-Delta motor starter panel of unit II, including safe 3-phase electrical isolation, dismantling the damaged and mechanically dislodged upper L&T ML-4 star contactor, and replacing it with one brand-new genuine L&T ML power contactor. It further covers bench inspection and servicing of the misaligned lower delta contactor—cleaning arc chutes, replacing internal moving/fixed contact tips using a genuine ML-4 spare contact kit, and verifying coil integrity—followed by re-machining and strengthening the panel backplate mounting studs to ensure rigid vibration-free alignment for both units. Work also includes re-crimping heat-stressed power conductors (lines DL1, DL2, DL3) with heavy-duty tinned copper ring lugs, re-torquing all power and auxiliary terminations to manufacturer specifications, functional interlock verification of the SDz5 Star-Delta electronic timer, testing across all phases, and a final full-load motor commissioning trial. Job includes cost of skilled/semi-skilled labour, tools, tackles charges to be employed at site. C) Servicing/repairs to foot valve of unit no. II 250 mm of LIS Rathua choked due to silt accumulation. Job includes extraction of foot valve from its installed position in the Nallah by means of cutting of rusted nut bolts using cutter and then lifting of foot valve on head load using manual labour and shifting foot valve to workshop. Job includes complete dismantling of foot valve at workshop and cleaning of mud/sludge and extraction of parts for assessment of damages and then providing/fitting of gaskets and minor repairs to existing flapper plate by welding work and proper finishing. Re-assembling of all parts of foot valve by providing/fitting of new nuts bolts and then re-fixing the foot valve on the suction side of the pumping machinery. Job includes cost of skilled/semi-skilled labour, tools, tackles charges, carriage charges etc. to be employed. Note: :- The Tenderers are requested to visit the site along with concerned JE and quote the rates as per site conditions. Any modifications/ alterations of the job, felt necessary if required at the time of actual execution may be /done as per actual site conditions. The firm should offer rebate on old material.

Rebate on Old Parts