bids are invited for cooling water treatment programme - treatment with chlorine and supporting biocides , a: precleaning (quantity and rate for three pre cleaning) , specify chemical name in column (h) , -do- , -do- , -do- , acid inhibitor , hcl (qty. required to be quoted in kg) , b: passivation (quantity and rate for three passivation) , specify chemical name in column (h) , -do- , -do- , -do- , contingency chemicals and biocidesi. contingency chemicals for tackling contaminants. , i. a). nitrate as no3>500 ppm to 2000ppm , i. b). nitrate as no3>500 ppm to 2000ppm , i. c). nitrate as no3>500 ppm to 2000ppm , ii. a). ammoniacal nitrogen as ammonia > 50 ppm to 200 ppm , ii. b). ammoniacal nitrogen as ammonia > 50 ppm to 200 ppm , ii. c). ammoniacal nitrogen as ammonia > 50 ppm to 200 ppm , iii. a). oil/grease>15ppm to 40ppm , iii. b). oil/grease>15ppm to 40ppm , iii. c). oil/grease>15ppm to 40ppm , iv. a). salinity as cl > 250ppm to 500ppm , iv. b). salinity as cl > 250ppm to 500ppm , iv. c). salinity as cl > 250ppm to 500ppm , ii. contingency biocides (see clause 5.7 of annexure-ii) in absence of chlorine for 4 days or more in a month. ii. a). absence of chlorine , ii b). absence of chlorine , ii c). absence of chlorine , regular treatment chemicals and biocides i. regular chemicals , specify chemical name in column (h) , -do- , -do- , -do- , -do- , -do- , ii. regular biocides (to be quoted for one dose) , specify biocides in column (h)(no. of doses for 29 months - 29) , -do- , -do- , chemicals supplied by fact (see clause 5.8 of annexure - ii) , chlorine if required (kgs) , caustic soda 100% (kgs) , technical service charges for 29 months including service to be quoted ** total quantity : 1