NIT NO.07, ITEM NO.01 (2025-26)

A- This work includes providing and fixing of 250 mm dia sluice valve in scour chamber. Providing services of 4 no underwater divers diving team with one supervisor for managing oxygen Cylinder, safety of the divers etc. and other under water equipment required at site work includes cleaning the surface of blend grooves of both the end where sluice gates is to be rest under deep water which includes lowering/ grinding of gate . The work also includes arrangement of all the safety equipment required at site against chlorine and safe enclose equipped with necessary equipment for making the diver's body temperature normal as per surrounding atmospheric conditions.

Hiring charges of Under Water drill machine, chain block, gas cutter, welding machine, tools and tackles etc. required at site

Dewatering of waste water with the help of suitable size of sludge submersible pump, delivery pipe & other consumables at suitable place.

Supply of 250 mm dia, PN-1.0, C.I. double flanged manually operated Sluice valve generaliy confirm to IS:14846 with latest amendments, having body, door, dome, gland in graded cast iron to IS210, Gr. FG-260, four faces spindle nut of gun metal, inside screwed non rising S.S AISI:410 spindle. Valve to be with BTW and gear box arrangement for ease in operation. Flange drilling as per IS: 1538, part-IV & VI. Make - DJB Approved.

Supply and fixing of 250 mm dia ms flange with 250 mm dia flange pipe on existing chamber with the help of welding,cutting,machining etc.

Providing and fixing of Nut Bolt & washer complete for sluice valve as per sample

Providing of 75% Neoprene rubber sheet

Providing the centre coupler made out from S.S(304) I/C threading both side in the coupler and providing the pins in the coupler for hold the shaft.

Providing/Fixing of plumber block for guiding the extension operating rod and hand wheel.

Providing of 6 meter long stainless steel extension rod made out of 50mm dia SS(304) rod.

Providing the bottom coupler for fixing the bottom with the S.S (304) Pin in the valve.

Providing of necessary support to Extension shaft for the straight movement of guide ways. Reassembling of sluice valve with the above spares with required hardware goods etc. as per site requirement.

B- This work includes repair of 250 mm dia sluice valves installed to regulate scouring of clarifier. Dismantling of sluice valve by gland plate, gland top housing and upper & lower dome of sluice valve by removing/cutting of nut bolt with the help of gas cutter and men power. The job i/c dismantle / removing the each part like spindle, GM nut, flap and GM ring of body for repairing and overhauling.

Repairing of S.S. Spindle by remetalling on the damaged portion, the job i/c machining, re-threading, finishing etc.

Repairing of G.M. ring of both side of body by remetalling, machining and finishing by machining work to make its original shape as required by job. Also includes the charges of Re-fixing the same of GM ring in body.

Repairing of G.M. ring of both side of flap by remetalling, machining and finishing by machining work to make it proper size. Also includes the charges of Re-fixing the same of GM ring in flap.

Repairing of CI flap by repairing of GM nut groove in the flap for accurate fixing of GM nut. Fabrication and fixing of MS flat by drilling and threading in CI flap and tightly fixing by using of nut bolts and washer with proper machining / alignment and operation with flap as per requirement by job.

Repairing of gland housing by making proper size of thrust bearing seat and maintain the size as per spindle. Replacement of gland bolts and repairing of gland plate.

Repairing of doom by cutting / removing of damaged portion with machining work job i/c fabrication, machining and fixing of MS bush for avoid the loosing of spindle making new bearing seat of proper size of thrust bearing and maintain the size as per spindle.

P/F of GM nut and thrust bearing as per sample.

Providing of Rubber packing/ nut bolts washer etc as per site requirement.

Providing the center coupler made out from S.S(304) I/C threading both side in the coupler and providing the pins in the coupler for hold the shaft.

Providing/Fixing of plumber block for guiding the extension operating rod and hand wheel.

Providing of 6 meter long stainless steel extension rod made out of 50mm dia SS(304) rod.

Providing the bottom coupler for fixing the bottom with the S.S (304) Pin in the valve.

Providing of necessary support to Extension shaft for the straight movement of guide ways.

Reassembling of sluice valve with the above spares with required hardware goods etc. as per site requirement.

Hiring charges of tools & tackles gas cutter, welding machine and other items as per requirement of site the job i/c loading/unloading, of repairable parts to workshop to & fro.

Painting and primer charges of sluice valve with one coat of primer & minimum two coat of enamel paint of required shade & colour.

Testing and commissioning of sluice valve on full load after complete repairing and fixing.

AVINAV TRADERS (BID ID -1596785)