WBPHED/EE/AMD/ NIeT-48 of 2024-2025/5

Amount

Pump Repairing Portion:-

Withdrawing of 100 H.P. Centrifugal pumping machinery set with base frame from second tier of Pump House after disconnection of electrical power connections from motor terminal box, then dismantling all foundation's concrete to the level of eye bolts, with help of H.O.T. crane and skilled & unskilled personnels as per direction.

Carrying the pump-motor set from Ratibati Head Works site to workshop(Asansol) for necessary reparing this cost included with Hired vehicle ,loading & unloading labour charges as per direction of EIC.(Above 10 KM upto 20 KM)

Opening the Top cover/Volute casing, taking the rotating unit, from this after de-coupling from motor, then dismantling the Rotor unit part by part by engaging skilled mechanic.

Supply of spares and machining operation for Pump Rotating Assembly as follows:-

Shaft re-metalizing both sides as per bearing inner diameter diameter size(DE/NDE).

Impeller collar turning & polishing(Both Sides DE/NDE).

Shaft check nut (NDE) thread re-metalizing then making new thread.

Shaft check Nut.

Bearing Housing Bolts.

Shaft Sleeve.(MOC-SS304)

Shaft Bush.(MOC-GM)

Neck ring.(MOC-GM)

Neck ring 'O' ring.(MOC-GM)

Stuffing Box Bush.(MOC-GM)

Bearing Housing sleeve.

Gland Stud with Nuts.

Motor base bolts and nuts.

Pump base bolts and nuts.

Pump packing Kit contain with Steam joints, Gland packing etc.

Semi finished tyre coupling for above Pump Set.(Make:-Unique, Model No-PX-110)

Finishing the both end by internal boring, making key hole and semi finished hole into finished.

Pump Body Scrapping, Cleaning & painting.

Ball Bearing for NDE/DE.(Make:-SKF, Model No-6309)

Re-assembling the rotating unit part by part with old serviceable spares and newly supplied spares as per direction, then putting the rotating unit into volute casing with NDE/DE bearings all done as per direction.

Supply of newly make base frame at site for installation of Pump Motor set.

Eye bolts for foundation.

Making base for installation of75 KW/100 HP cenfrifugal pump motor set at Pump House, atfirst breaking the existing damaged foundation, next make an reinforcement by using 10 mm rod filled with Ordinary Cement Concrete (mix 1:1.5:3) with graded stone chips (20 mm Nominal size) including shuttering, size of casting not less than 1500mm X 800 mmX 450 mm and also inserted the 6 Nos anchor nut linked with RCC structure properly for fixing the base frame, plaster and net cement all surfaces as well as curing all work should be done by as per direction of EIC.

Motor Overhauling Portion:-

Dismantling the B3 mounted motor, Rotor thread out from stator body, both side bearing remove from bearing journal, thorough checking and cleaning all the dimensions and also checking the tightness of slot wedge, testing of RTD, BTD and space heater as per direction of EIC.

Motor cover sleeve.

Ball Bearing for both NDE/DE.(Make:-SKF, Model No-6318)

High temperature grease.

Placing the Rotor & stator into Heat chamber for remove moisture and improve IR value after improve IR value using Surface cooling varnish and drying in all dimentions.

After replacing of both side(DE+NDE) bearings, fitting of cooling unit (TEFC), coupling Hub, Rotor thread in with proper care, checking gap between stator and rotor, complete assembling with all spares parts all work should be done as per direction of EIC.

Motor cleaning & painting by maintaining IS Specification.

Carrying the pump-motor set from Asansol workshop to Ratibati Head Works for necessary reparing this cost included with Hired vehicle ,loading & unloading labour charges as per direction of EIC.(Above 10 KM upto 20 KM)

Installation of following pump & Motor at the newly fixied frame of the pump coupled with motor, maintaining proper alignment using dial Gauge including fitting fixing the pump and jointing all necessary connection after scrapping, cleaning the rust / damaged ruber insurtion and painting the existing suction and delivery side pipes, valves, dismantle joint etc from the surface all complete including testing of the pump and commissioning the same as per direction.

Add GST @ 18%

Add CESS @ 1%

M/s. SOMA ENTERPRISE (BID ID -6177501)

SUNRISE ENGINEERING CORPORATION (BID ID -6216566)