Kolkata Metropolitan Development Authority Tender

Laying and Jointing PVC Pipe. Heading

Supply and delivery of high strength calcium hypochlorite granules (available chlorine 60% to 70 %) at different UGRs for making solution by mechanical stirring system and directly charged online throughout the supply hours to achieve residual chlorine upto 0.5 ppm at generating point with following specification: the chemical should be white to off white in colour, free from all foreign matter decomposing at 1770C, decomposes in water and alcohol, non-hygroscopic, practically clear in water solution at saturation level permissible limit of 8% with 2% moisture content. The granular size should pass through 100 RSS mesh 1.5% maximum. The brand and make of the chemical must be stated and certified by AIIH & PH/ similar Govt. organisation not earlier than 2011, stating the stability, strength, health safety and use of the product for drinking water chlorination for One Year (365 days).

Labour for operating mechanical stirring system for making the solution of water and calcium based granular chlorine in dosing tank of 100 lt to 200 lt capacity, high pressure single head gear adjustable dosing pump including stand by pump complete with all accessories with necessary fixtures for direct on line injection by mechanically regulated dosing pumps during supply hours to achieve upto 0.5 ppm at generating point including all labours, materials, operation, supervisors charges and documentation and testing charges (atleast once in a month) of residual chlorine all complete.