EMD/SP12(Tender)/2025-26 -37

Scope of Work

Flushing Gate at Weir Site – Rukti HEP Extension of Gate Height:- Extension of the existing gate height by 2 feet using a steel plate.Existing gate dimensions: Height – 7.5 feet, Breadth – 3.5 feet. Supply, Replacement, and Fixing of Gate Seals: Replacement of 01 No. Top Seal, 02 Nos. Side Seals, and 01 No. Bottom Seal with music-knot type Floro-cladded solid bulb rubber seal as per IS: 11855.Replacement of the deformed white Teflon base channel of the main intake gate on which the gate rests in the closed position. Cleaning and Clearing Works: Thorough cleaning and clearing of gate grooves and gate travel path.Cleaning, servicing, and greasing of gate rollers to ensure free movement. Servicing of Operating Mechanism: Cleaning and greasing of the gearbox, screw hoist mechanism, and all associated gears and components to restore smooth and reliable operation. Final Re-Assembly, Testing & Commissioning: Replacement of all damaged nuts and bolts with stainless steel (SS) nuts and bolts.Complete re-assembly, testing, and commissioning of the gate mechanism, in all respects, to the satisfaction of the Engineer-in-Charge (EIC). Painting Work: Application of high-quality anti-corrosive paint on the entire gate structure and gearing assembly to prevent rusting and enhance service life. Diversion of Water : Diversion of water as required to facilitate the safe execution of repair works and, after completion of the job, restoration/diversion of all water flow back to the flushing gate. General Conditions: The contractor/vendor shall check and verify the sample of the required type of seal at site before procurement. Any modification required in the seal dimensions or fitting shall be carried out by the contractor free of cost. All miscellaneous works related to this job shall be deemed to be included in the scope of this work and no extra payment shall be admissible.

Repair of 300 mm sluice valve and cleaning of desilting tank including removal of blockage from 40 m long, 10-inch diameter flushing pipe at Rukti HEP. Dismantling and inspection of the existing 300 mm sluice valve installed on the desilting flushing line. Servicing / repair / replacement of worn-out parts such as gate screw, spindle, nut, seals, packing, gaskets, fasteners, etc., as required for full restoration. Proper alignment and re-fixing of the sluice valve on the pipeline/flange with suitable bolts, nuts, washers, anchors and sealing materials. Ensuring smooth manual opening and closing operation of the sluice valve after repair. Application of anti-corrosive paint on the complete valve body and exposed metallic parts after repair. Thorough cleaning of the desilting tank for removal of deposited silt, debris, and unwanted material. Opening of the blockage of the flushing pipe of approximately 40 metres length and 10-inch diameter using suitable tools/equipment. Restoration of free and unobstructed flushing discharge after completion of tank cleaning and blockage removal. Final testing and observation in presence of the site/engineer-in-charge to ensure satisfactory performance of the repaired valve and flushing line.

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