Overall work and location
Repair, maintenance and rectification of the fire-water storage sump, fire hydrant system, borewell and pumping arrangements at Aavin Illam, Head Office, Nandanam, Chennai.
Sump cleaning and access works
Dewater, desilt and clean the approximately 1,50,000-litre fire-water sump; clean walls/floor by pressure jet, brushes and approved methods; whitewash where required; dispose of waste; and provide all labour, tools, pumps and consumables. Replace the damaged access frame/plate with SS 304 angle framing and 4 mm SS 304 chequered plate.
Fire hydrant, pipeline and pump rectification
Replace damaged/leaking 3-inch GI pipe sections at the 2nd Floor, 4th Floor and terrace; fabricate, weld, align and support new sections; service and align fire-water pumps; service butterfly valves; hydro-test the firefighting line from 1st to 9th Floor, arrest identified leaks, retest and commission.
Borewell and earthing works
Lower the borewell water level, remove sludge by compressor, clean the borewell bottom and dispose of deposits; replace the worn/leaking delivery pipeline with 1-inch UPVC pipe, fittings and brass foot valve; complete civil supports/alignment; and replace the damaged GI earth flat with cable-tray supports, terminations and continuity testing.
Specified material quantities
The schedule specifies 18 material lines, including 6 m of 3-inch GI C-class pipe, 12 m of 75 MS channel, 60 m of 1-inch UPVC pipe, 18 m of 3 mm x 40 mm SS 304 angle, 3.5 sq. m of 4 mm SS 304 chequered plate, 6 m of 50 x 150 mm cable tray and 35 m of 3 x 25 mm earth flat, plus listed flanges, bends, reducer, clamps, fittings, foot valve and hose.
Completion timeline
Commencement is required within 7 days from receipt of the work order, and completion within 7 days from receipt of the acceptance order. The differing trigger documents create an ambiguity that should be resolved before mobilization.