NIT NO. 15, ITEM NO.01 (2025-26)/WW-III

Hiring of heavy-duty amphibious excavator/dredging machinery, Water-operated / water-borne machine and other mechanical means, including complete de-silting of river bed in the intake zone, formation and restoration of unobstructed water flow path from river to intake sump also Hiring of High-Pressure Water Jetting Pump of minimum 25 HP capacity, including operation and deployment with flat hose delivery pipeline up to approximately 30 meters length, complete with leak-proof joints, clamps, rubber hoses, fittings, and all accessories as required at site, for cutting, loosening, and dislodging compacted mud and silt in Yamuna River. The work includes formation and restoration of clear intake flow path/channel for raw water from river to sump of Raw Water Pump House (RWPH), Wazirabad, including all handling, shifting, operational arrangements, and safety measures, complete in all respects as per site conditions and directions of Engineer-in-Charge.1

Removal of sand/sludge from Yamuna River and other mechanical means, including complete desilting of river bed in the intake zone, formation and restoration of unobstructed water flow path from river to intake sump, and thorough cleaning of intake bar screens and approach structures for 20 MGD Raw Water Pump House, Wazirabad (Okhla WTP). The work includes engagement of certified skilled divers with complete diving equipment for underwater operations, manual assistance using labour with ladder, fawrah, tasla, sludge pumps with PVC delivery pipeline up to 100 metres, tools & tackles, and all requisite safety equipment. The scope further includes periodic shifting, handling, and disposal of dredged/staked sand and sludge within Yamuna River by manual and/or mechanical means, strictly under the supervision of the Engineer-in-Charge and in compliance with NHRC guidelines. The rates shall be inclusive of all manpower, machinery, safety measures, consumables, tools & tackles, and incidental works required for safe and satisfactory completion of the job.1

Providing, deploying, and maintaining comprehensive safety arrangements for safeguarding manpower engaged in underwater river cleaning and desilting works, including supply and use of essential Personal Protective Equipment (PPE) and safety devices such as air face masks, safety helmets, gum boots, hand gloves, resuscitation apparatus, portable ladders, first-aid box, caution tape, barricading cones, torches, fire extinguishers, and all other safety accessories as required at site. The scope includes ensuring compliance with applicable safety standards, continuous availability of safety gear during execution, and implementation of all necessary preventive measures to ensure safe working conditions for personnel, complete in all respects as directed by the Engineer-in-Charge.1

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