Kolkata Metropolitan Development Authority-KMDA has published Supply And Dosing Of High Strength Calcium Hypochlorite Granular Chlorine Through The Mechanical Stirring System For Making Solution Of Water And Calcium Based Granules Directly Charged On Line Injection By Mechanical Regulated Dosing Pumps During Supply . Submission Date for this Tender is 21-03-2023. Chemical Supply Tenders in 24 Paraganas North West Bengal. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Laying and Jointing PVC Pipe. Heading |
| 2 | Supply and delivery of high strength calcium hypochlorite granules (available chlorine60% 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 six months) |
| 3 | Labour for operating mechanicalstirring 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 accessorieswith 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. |
| 4 | Supplying, fitting and fixing of mechanical stirring system including dosing tank, functional & standby pumping arrangement , Plumbing arrangement with accessories, mixing arrangement including electrical accessories & connection at site all complete as per site requirements. [Note : Per set comprises 1pair (two nos.) pumps and 1 pair(two nos.) motors] . Pumps and Motors of the dosing unit should be compitable of delivering the discharge of (0 -100)LPH at 10Kg./Cm.2 pressure |
| 5 | Operation & Maintenance of mechanical stirring system including dosing tank, functional & standby pumping arrangement , Plumbing arrangement , mixing arrangemnt includingaccessories and electrical connection at site. A) For the operation period of 180 days. |
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