Special repairs to Sewage well desilting and other repairs in Government Arignar Anna Memorial Cancer Hospital at Karapettai, Kancheepuram in Kancheepuram District.

Dewatering of the sewage collection well (up to 9.20 meters depth) shall be carried out using a high-capacity submersible pump suitable for handling sewage with suspended solids. The pump shall be operated continuously to remove liquid sewage and loose sludge, lowering the water level to a safe depth for manual desilting. Necessary electrical connections, hoses, and safety precautions shall be ensured throughout. The pump shall be approved before use, and all work shall be carried out under the direction of the departmental officers.

Providing jetting for the sewage collection well up to 9.20 meters depth using a high-pressure jetting machine to loosen and dislodge settled and semi-solid sludge adhered to the inner surfaces. The operation shall be done uniformly without damaging the structure. Only trained personnel shall operate the equipment, and all work shall follow confined space safety protocols including gas testing, PPE, and ventilation. The jetting work shall be executed under the direction of the departmental officers.

Providing bucket-lift systems for the manual removal of thick sludge, hardened waste, sand mounds, and solid debris that cannot be removed by mechanical means from the sewage collection well up to 9.20 meters depth. Sludge shall be lifted using strong buckets with ropes or chain pulley arrangements supported by tripod frames. Workers shall use proper safety equipment and follow confined space safety norms. The entire manual desilting operation shall be carried out under the direction of the departmental officers.

Supplying and erection of 5.00 HP /Three Phase, sub mergible pump set in borewell approved make and quality with ISI mark with necessary accessories and fixed with delivery pipe errected in the borewell with necessary clamp etc., with following additional accssories1 No of 3 Phase Star Delta Starter of 63 AMPS of approved quality and make with ISI mark 1 No of 3 Phase 63 AMPS Main Switch of approved quality and make with ISI mark. 1 No of peventor of approved quality and make with ISI mark1 No of panel board of required size with indicator fuse unit voltmeter with necessary provision toaccomodate the starter and mini starter etc.1 No of capacitor with board and proper earthing as per I E rules etc., complete and tesing the pumset and trail run for 10 days.

SUB TOTAL