CLEANING OF SERVICE TANKS AND REPAIRS TO FLOAT VALVES STOP VALVES AT PANGODE MILITARY STATION TRIVANDRUM

Amount

Disconnecting existing tanks exec 500 Ltr and not exec 1000 Ltr setting aside (or lowering if required ) for water tank, dewatering, cleaning and removeing all dirt, scale and algae formation from inside the tank by using cleaning chemicals including fixing stickers mentioning "TANK CLEANED ON " with dt, month, & yr. The stages of cleaning prosess of tanks are as follows :- (a) To drain out the water by using exist valve or high capacity dewatering system. (b) Cleaning all the algae fmn inside the tank by using TERBAC G-5/NB-10/INCHLOR-5 chemicals and scrubbing the walls of the tank by scrubber. (c) Fresh water cleaning high speed jet pump. (d) Drying the tank then first stage of bacteria screening and sterlization of the tank by using TERBAC G5/NB-60/INCHLOR-5 chemical.

(e) Cleaning the floor of the water tank by heavy duty industrial vaccum clearner. (f) Second stage of bacteria screening and starilization of the tank by using ultra violet ray ejector covering 360 degree within the tank and killing all suspended bactaria (g) Third stage of bacteria screening and sterilization of the tank floor by using TERBAC G65/NB-60/INOXI-60 chemical. Note - (i) the quoted rate shall include for removal of mud, grits and deposits etc properly from site of work and on completion of work sterlisation certificate to submitted to the Engineer-in-charge. (ii) Cleaning needs to be done mechanically by authorised dealer/agent as approved by Engr-in-charge. (iii) Cleaning chemical shall also be approved by Engineer-n-charge.

All as per item no 1 here-in-before but of capacity 2000 ltrs

Supply and fix in repair PVC ball valves, high pressure with polythene float and fly nut complete, screwed for iron/PVC pipes all as specified of size 20mm dia.

All as per ser No 3 here-in-before but of 25mm dia

Supply and fix in repair UPVC high pressure/pasted pipe all as per ASTM-D-1785 sch 40 , with working pressure 10 Kg/cm 2 of size 25mm dia bore including all fittings, laid in trenches/wall/floor including taking down the old UNSV perished pipes all as specified and directed

All as per ser No 5 here-in-before but of 20mm dia bore

All as per ser No 5 here-in-before but of 15mm dia bore

Supply and fix in repair gun metal gate valve with ISI mark IS-778 class I of size 25mm dia bore with iron wheel head, screwed both end.

All as per ser No 8 here-in-before but of 20mm dia bore

Supply and Fix in repair rotational moulded polythene water storage tank 500 ltrs capacity (Triple layers) hoisted and fixed in position including dismantling of existing UNSV water tank and connecting inlet and outlet pipe lines.

All as per Ser No 10 here-in-before but of 1000 ltrs capacity.

Supply and Fix in repair PVC tank cover suitable for 500 ltrs/1000 ltrs capacity complete with fixing accessories

Collecting drinking water sample in sterilized bottle from source(Pump Houses) for testing the sample at Govt Analysts Lab, Public Health Department, Kerala Government as per the Government norms and submitting the Lab Test Report in the name of Garrison Engineer (A) Trivandrum complete all as specified and directed. Note: The cost for lab tests seems to be included in quoted rate.

Suply and fix in repair brass valves, high pressure with polythene float and fly nut complete, screwed for iron/PVC pipes all as specified of size 20/25 mm dia.

SHILPA ENGINEERS AND CONTRACTORS

General Engineering and Constructions

ROTECH ENGINEERS AND BUILDERS

SUPER COOL

JEETH CONSTRUCTION