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| 1 | M&L for tank cleaning and sterilization of inside the RCC/ PVC water tanks of capacity exceeding 200 ltrs and not exceeding 500 Ltrs capacity, by disconnecting existing tank and setting aside (or lowering if required), dewatering, for repairs, cleaning, sterilization using TERBAC G5/ Inchlor-5/ NB-10/ TERBAC-G-65/ Inoxi-60/ NB-69 and Ultra violet ray : Make: Rays cleantech/ Inus water tech/ Satya enterprisesand removing the dirt, sediments, scale, algae formation from inside of tank and removing from siteincluding writing mentioning \"TANK CLEANED ON\" with date, month and year and hoisting if required reconnecting and re-fixing in position complete all as specified and directed with the following cleaning process of the tanks:- |
| 2 | (a) First stage: To drain out the water by using exist valve or high capacity dewatering system.(b) Second stage: Cleaning all the algae from inside the tank by using TERBAC G-10/ Inoxi-60/ NB-69 lab tested branded chemicals and scrubbing the walls of the tankby scrubber.(c) Third stage: Fresh water cleaning with high speed jet pump.(d) Fourth stage: First bacteria screening is decertification by using TERBAC G5/ INCHLOR-5/ NB-10 a Govt. lab certified branded halogen compound of E-in-C approved equivalent product.(e) Fifth stage: Cleaning the floor of the water tank with heavy duty industrial vacum cleaner.(f) Sixth stage: Second bacteria screening and sterilization method using ultra violet ray within the tank for killing all suspected bacteria. (g) Seventh stage: Cleaning and third bacteria screening and sterilization of thetank floorby using lab tested branded chemiclasstrong oxidizing agentTERBAC-G-65/ Inoxi-60/ NB-69 or E-in-C approved equivalent product. |
| 3 | Notes: (i) The rate quoted shall be deemed to be included for removal of mud, grits and deposits etc properly from site of work and on completion of work, sterilisation certificate to submitted to Engr-in-charge. carrying out work on roof top at any height. Necessary safety measures/ precautions as per norms for work men shall be taken to avoid accident or such incident.(ii) Cleaning chemical shall be approved by Engineer -in- Charge. |
| 4 | All as per Sl No. 1.00 here-in-before, but water tanks of capacity exceeding 500 ltrs and not exceeding 1000 ltrs complete all as specified and directed. |
| 5 | All as per Sl No. 1.00 here-in-before, but water tanks of capacity exceeding 1000 ltrs and not exceeding 2000 ltrs complete all as specified and directed. |
| 6 | All as per Sl No. 1.00 here-in-before, but water tanks of capacity exceeding 2000 ltrs and not exceeding 5000 ltrs complete all as specified and directed. |
| 7 | S&F in repair ball valves high pressure of PTMT with epoxy coated aluminium rod & high-density plastic ball screwed for 20 mm bore dia of iron/ PVC pipe (Minimum weight 210gms) complete all as specified and directed. |
| 8 | S&F in repair ball valves high pressure of PTMT with epoxy coated aluminium rod & high-density plastic ball screwed for 25 mm bore dia of iron/ PVC pipe (Minimum weight 455gms) complete all as specified and directed. |
| 9 | S&F in repair Ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed for 25 mm bore dia of iron/ PVC pipe complete all as specified and directed. |
| 10 | S&F 15 mm bore dia unplasticised PVC pipes as per ASTM-D-1785 Sch 40 with pressure rating 10 kgf/cm2 including all necessary fittings fixed complete to walls, ceilings or in floors etc., any type of pipe including taking up or down old unserviceable steel tubing/ PVC pipes and connections, complete all as specified and directed. |
| 11 | All as per Sl No. 8.00 here-in-before, but 20mm bore dia complete all as specified and directed. |
| 12 | All as per Sl No. 8.00 here-in-before, but 25mm bore dia complete all as specified and directed. |
| 13 | All as per Sl No. 8.00 here-in-before, but 40mm bore dia complete all as specified and directed. |
| 14 | All as per Sl No. 8.00 here-in-before, but 50mm bore dia complete all as specified and directed. |
| 15 | S&F in repairs stop valve (Ball valve) half turn type with handle of UPVC (ASTM) high pressure/ heavy duty suitable for UPVC pipe of size 20 mm bore complete all as specified and directed. |
| 16 | S&F in repairs stop valve (Ball valve) half turn type with handle of UPVC (ASTM) high pressure/ heavy duty suitable for UPVC pipe of size 25 mm bore complete all as specified and directed. |
| 17 | S&F in repairs Gun-metal, globe or gate valves, with iron wheel head, screwed both ends,conform to IS 778 for 20 mm bore dia iron pipe complete all as specified and directed. |
| 18 | All as per Sl No. 15.00 here-in-before, but 25mm bore dia complete all as specified and directed. |
| 19 | All as per Sl No. 15.00 here-in-before, but 40mm bore dia complete all as specified and directed. |
| 20 | All as per Sl No. 15.00 here-in-before, but 50mm bore dia complete all as specified and directed. |
| 21 | S&F Rotational moulded polyethylene water storage tanks of 500 ltrs capacity (Triple layers) (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I including dismantling of existing unserviceable water tank and connecting inlet and outlet pipe lines complete all as specified and directed. |
| 22 | S&F Rotational moulded polyethylene water storage tanks of 1000 ltrs capacity (Triple layers) (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I including dismantling of existing unserviceable water tank and connecting inlet and outlet pipe lines complete all as specified and directed. |
| 23 | S&F in repairs PVC water tank cover suitable for 500 ltrs/ 1000 ltrs capacity complete with fixing accessories complete all as specified and directed. |
| 24 | Testing of drinking water samples by collecting drinking water sample in sterilized bottle from source (Pump Houses) for testing the sample at Govt. Analysis Lab, Public Health Department, Kerala Government as per the Government norms and submitting the Lab Test Report on all physical and chemical parameters including residual chlorine, E-coli and Total Coliform content etc in the name of Garrison Engineer (A) Trivandrum during the period of contract as directed by Eng-in Charge complete all as specified and directed. Note: The cost for lab tests with TPT charges shall be included in quoted rate. |
