WBPHED/EE/AMD/ NIeT-16of 2025-2026/10

Amount

Base/Foundation Making Portion:-

Atfirst dismantle the Motor with Pump set from existing base frame by using Hand operated trail, loosen the botls, then placed on working platform, next breaking of tactile/concrete by drill hammer removing all debrish, bring the frame with inserted Nuts & Bolts, all works should be done skilled mechanic aslo guidance by EIC. This cost included with hire charges of all necessary tools & tackles, etc also manual labours.

Dewatering from the excavated trenches for repairing any type of pipe line including Hire Charge of pump / carriage / Fuel & lubricant / Operator etc. for big dia pipes more, than 200 mrn dia all complete as per direction of EIC. (This item will be executed after the permission of E.l.C.)

Dismantling all types of plain cement concrete works, stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m.In ground floor including roof.

(b) above 150 mm. thick.

Reinforcement with 10mm dia MS rod for reinforced concrete work in all Sorts of Structures including distribution bars,stirrups,binders etc initial straighting and removal of loose rust(if necessary) cutting to requisite length,hooking and bending to correct shape ,placing in proper position and binding with 16 gauge black annealed wire at every intersection, complete as per drawing and direction.(make-SAIL/IRNL and other approved make)

Inserted the suitable size eye bolts into the reinforced steel binding as per proper dimensions of Pump.6 Nos eye bolts)

Ordinary Cement concrete (mix 1:1.5:3) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement if any, in ground floor as per relevant IS codes.

Micro concrete for better reinforcing to withstand thrust load.(Make:-Sika)(30 Ks For each Bag)

Painting of the Base frame by original coloured as per API 610.

Pump Repairing Portion:-

Opening the Top cover/Volute casing, taking the rotating unit, from this after de-coupling from motor, disconnection of power line as per direction.

Carrying the defective Rotating unit of Pump Set No-02(searsole Zone) from Kalajharia Head Works Site to Asansol work shop by hired vehicles including loading and unloading on both the end as per direction.(Above 10 KM Upto 20 KM)

Dismantling the Rotor unit part by part by engaging skilled mechanic.

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

Impeller collar turning and polishing.(Both Side DE & NDE)

Neck Ring.(MOC:-GM)

Pump Shaft Sleeve.(MOC:-SS304)

Sleeve Check Nuts.(For DE & NDE)

Sleeve 'O' ring.(MOC:-SS)

O' ring new fitting.

Gland Stud M 20 mm X 100 mm.(Make:-Unbroke)

Neck Bush.(MOC:-GM)

Stuffing box bush.

Bearing housing sleeve new making as per bearing, inner diameter.

Shaft Remetalizing and turning, polishing as per Bearing inner diameter size.

Suction & delivery Nuts & Bolts.(Size M 25 mm X 100 mm)

Ball Bearing for DE & NDE.(Make-SKF, Model No-6314)

Pump Packing Kit contained with Gland packing, Steam joint etc.

Re-assembling the rotating unit part by part with old serviceable spares and newly supplied spares of them Sl No.2.05 to 2.18 as per direction.

Carrying of newly repaired Rotating Unit of pump set no-02(Searsole Zone) from Asansol work shop to Working Site by hired vehicles including loading and unloading on both the end as per direction.(Above 10 KM Upto 20 KM)

Atfirst Scrapping, cleaning the pump body then painted with original colour as per API 610, place the Rotating unit into Volute casing with proper balancing, greasing both DE & NDE bearing, then closed the bearing housing, checking balancing of rotating unit as per direction of EIC.

Installtion of Pump-Motor set with base frame on the foundation then fitting & fixing of Nuts, bolts by using level marker for proper positioning, fixing pin-bush type coupling between this, doing termination of cables into terminal box of 275 KW Motor by engaging skilled electrician as per direction of EIC.

Alignment of the pump-motor set by using dial gauge also done by skilled mechanic to avoid any kind of damaged.

Testing and commissioning of the whole arrangement on Full load working conditions aslo presence of officials.

Submersible Pump-Motor set repairing portion(7.5 HP):-

Carrying the pump-motor set from Kalajharia Headworks 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)

Dismantling the defective pump & motor set part by part for detecting actual fault.

Supply & delivery of following spare parts as per sample(For Motor Rewinding) :-

Motor Bush.(MOC-GM)

Thrust bearing segment with carrier and plate.

Water Seal.

Rotor Grinding and dynamic balancing.

Rewinding the burnt out motors with supplying of water proof PVC copper wire of suitable gauge and all others relevant materials to complete the job after necessary cleaning the slot as per direction. (Cost of winding is considered after deduction of the value of burnt out coil).

Supply & delivery of following spare parts as per sample(For Pump repairing) :-

Neck Ring.

Stage Bush.

Impeller key.

Reassembling the pump-motor set with the above supplied materials as mentioned in item no. 3.10-3.12(For Pump) and 3.04-3.3.08 (For Motor rewinding) also the old serviceable spares to complete the job as per direction of EIC.

Painting the following repaired pump-motor set with supplying of approved quality paint after scrapping the old painted surface as per direction.

Back carrying the above pump-motor set from workshop to Site store after repairing including hired vehicle, loading & unloading charges.(Above 10 KM upto 20 KM)

Add GST @ 18%

Add CESS @ 1%

WEST BENGAL ENGINEERING CO. (BID ID -6721975)

M/s. Jit Enterprise (BID ID -6725444)

M S ENTERPRISE (BID ID -6707260)