REPAIR/ MAINT OF WATER SUPPLY RISING MAINS AND DISTRIBUTION PIPE LINE, SLUICE VALVE, NON RETURN VALVE, GATE VALVE, VALVE PIT CHAMBER AND OTHER CONNECTED ITEMS OF WATER SUPPLY WORK UNDER AGE (I) NAYA RAIPUR AT NRMS

Supply only Refill : Chlorine tablets contained in plastic cylindrical sealed disposable sanitiser refill for disinfection of drinking water, suitable for operation through recommended dosing system. (i) Replacement indication: visual & weight variation. (ii) Water contact orifice design: sealed when dry, exposed upon immersion. (iii) Operation type: Non contact, non inhalatory. (iv) Cylinder dia :2.5 inches +0.5 inches. (v) Cylinder height: Minimum 10.0 inches +0.5 inches. (vi) Operational stipulations:- (a) Heavy metal (Pb & Hg) contamination in the product media must be BDL as per AAS data. (b) Minimum volume of water disinfected by each Chlorine tablets Refill to obtain disinfection activity of 1 ppm on spot (Influent water quality variation, ambient & site condition variations apply) as per absorbance data generated at λmax 515nm. Three Hundred Fifty Thousand litres. (c) Stability: Active ingredent stabilty (when stored at 25-45 degree Centigrade temp) must be at least 98% after one year as per data generated by accelerated Stability test protocol. (d) Safety & health hazard aspects on usage of the product media for regular drinking water disinfieciton: Heavy Metal contaminants (like Mercury & lead) in product media must be below detectable limit (BDL), and the product must pass the Acute Toxicity test (to specially confirm non toxicity for mammalian cells), based on which the product must be considered safe to use for human health safety point of view and freedom from toxicity when used in drinking water disinfection in recommedned dosage. (e) The refills must ensure infrastructural safety (as per date generated by Electrolytic Conductivity (μs/cm) test protocal) and operators health safety. (f) Chlorine tablets Refill must be complaint with operators health safety considering regular exposure. The brand and make of the sanitiser must be stated and certified by a laboratory/study centre of any Govt. University.

Taking up or down steel tubing 25 to 40mm dia and connections, including cleaning for refixing or removal to store or for sch of credit all as specified and directed by Engr-in-Charge.

Taking up or down steel tubing 50 to 100mm dia and connections, including cleaning for refixing or removal to store or for sch of credit all as specified and directed by Engr-in-Charge.

Taking down gate valve /ball valves any type all as required and directed by Engr in charge.

M & L for GI tubing 25 mm dia medium grade galvanized with all fittings laid in trenches complete all as specified and directed. Make- TATA /JINDAL/SWASTIK

M & L for GI tubing 40 mm dia medium grade galvanized with all fittings laid in trenches complete all as specified and directed. Make- TATA/ JINDAL/SWASTIK

M & L for GI tubing 50 mm dia medium grade galvanized with all fittings laid in trenches complete all as specified and directed. Make- TATA/ JINDAL/SWASTIK

M & L for GI tubing 80 mm dia medium grade galvanized with all fittings laid in trenches complete all as specified and directed. Make- TATA/ JINDAL/SWASTIK

S & F Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed in 25mm bore dia

S & F Gun-metal, globe or gate valves, with iron wheel head, screwed both ends for iron pipe and fixed in 40mm bore dia