Water Supply Works Tenders

SUBWORK NO : 6 WATER TREATMENT PLANT Item No.-1 0.8 MLD Package Water Treatment Plant Designing (aesthetically), providing, fabricating Package Water Treatment Plant at the shop, transporting to site, installing, testing and commissioning at the site, giving necessary one month's free test and trail run with guarantee for one year, etc. complete. Prefabricated Package Water Treatment Plant comprising following : 1.Rapid mixing channel in M.S. sheets and M.S. baffle. 2.Flocculator not less than 10 minutes detention, in M.S. prefabricated box, flocculation being achieved either by glass pebbles of graded size or PVC tetrapod or equivalent arrangement to ensure good floc formation. 3.Plate or tube settlers of not less than 30 minutes detention in M.S. prefabricated box, the plates / tubes mounted in the settler basin with inclination of not less than 60 degree to horizontal. 4.Rapid sand gravity filter in M.S. prefabricated box with filter sand not less than 500 mm thick, supported on false floor below with polypropylene nozzles spaced at not more than 500 mm centres in either direction. 5.Backwashing, inlet facilities only shall be provided. Department shall provide either ESR giving 8 to 10 M head at filter nozzles or backwash pump, having flow rate of 0.6 Cum per minute per square metre of filter bed. (Limit upto 5.0 M. from W.T.P. face ) Air blowers - Air Blowers are not required for WTP having capacity less than and equal to 3 MLD, for WTP having capacity more than 3 MLD air blowers capacity of delevering 600 LPM per sqm of free air of filter area 0.4 kg/sqcm at underdrain (100% standby) Wash water tank capacity equal to 2 % of designed quantity of filer water in a day + 10% wash water pump with 100 % standby (Minimum 3 HP with all accessories) Backwash with water not less than 0.6 cum/sqm of filter bed area in filter box. Piping of outlet upto sump 6.Laboratory equipments 7.External & Internal electrification 8.TCL solution tank with mixing, carrying and dosing arrangement with piping. 9.Gravity feed gas chlorinator with 100% standby. 10.Four alum storage unit 11.Drainage arrangement 12.Providing room with RCC roof for office and Lab space with necessary water supply & drainage arrangement & internal roads 13.RCC sump of one hour cap.and pump house on it. 14.Internal Road 15.Wire fencing with gate for WTP premises. 16.All civil works for foundation, consisting of raised RCC platform above G.L. or walls in B.B. masonry or UCR masonry shall be provided as per needs at site. 17.Bypass in the form of pipes or M.S. channels included in the design, effecting bypass of such new tank and filter individually or both. (Limit upto 5.0 M. from W.T.P. face) 18.The entire M.S. fabricated tank provided with FRP lining (5 mm thick) to inside face in contact with water epoxy painting- two coats with one coat of primer on outside. The thickness of plates employed shall not be less than 6 mm 19.Alum dosing and mixing arrangements to be provided in twin tanks, each of 8 hours capacity, capable of importing does of 20 ppm with 5% solution. The alum tanks provided with a dose in steps of 5 ppm and entire unit mounted on the top of flocculator / settler box, in the form of prefabricated structure, with access platform and ladder. Alum boxes with FRP lining (5 mm thick) inside and epoxy paint two coats with one coat of primer on outside. 20.Both flocculator and settling basins provided with hopper bottom with slope not less than 45 degrees to the horizontal drain pipes and valves provided to both flocculator and settling basin. 21.Flow ratings to conform following parameters a.Velocities in channels not to exceed 0.6 M./Second. b.Velocities in filter outlet pipes and valves not to exceed 1 M./Second. c.Velocities in interconnecting pipe and controls not to exceed 1M./Second. d.Backwash with air : Not required. e.Backwash with water : Not less than 0.6 M./ Sqm. of filter bed area in filter box. 22.Free board for all units not less than 300 mm

Cleaning of terrace/loft water storage tank (inside surface area) up to 2000 litre capacity at all heights with coconut brushes, duster etc., removal of silt, rubbish from the tank and cleaning the tank with fresh water disinfecting with bleaching powder @ 0.5gm per litre capacity of tank including marking the date of cleaning on the side of tank body with the help of stencil and paint and disposing of malba all complete as per direction of Engineer-in-Charge. (The old date already written on tank should be removed with paint remover or black paint and if date is not written with the stencil or old date is not removed deduction will be made @ Rs. 0.10 per litre) (if during cleaning any GI fittings or ball cock is damaged that is to be repaired by contractor at his own cost and nothing extra will be paid on this account)

Providing and fixing Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, i/c fixing the pipe with cla...

Rates for 24x7 Operations and Maintenance of Didihat, Berinag & Dharchula Urban water supply scheme under Didihat Division.” {such as Leakage repair and removing of chowkage (Water/Sewer), Pump operation/Valves operation, Resolving of consumer complaint of contaminated water etc, Excavation work for chowkage and leakage work etc, O&M of consumer grievance redress center & Office, O&M of water Tanker, Distribution of water/Sewer Bill & Cleaning of cwr/oht/pump house and its campus & tubewell campus, Pump House/ tubewell campus at least 2 times in a year, Date must be Marked on oht/cwr and resolving of consumer complaint of contaminated water, not getting water and other complaint i.e CM helpline 1905 or other state level complaint Portal}under Didihat Division