REPAIRS / REPLACEMENT OF FLOAT VALVE, CLEANING OF OH RESERVOIR, UG SUMPS, STATIC WATER TANKS, PRESSURE FILTRATION PLANT, CHLORINE INJECTOR AND ALLIED ITEMS AT AF STN SURYALANKA

Amount

S&F in repairs PP-R Tank Connector of Size 25mm complete all as specified and as directed.

S&F in repairs PP-R Tank Connector of Size 32 mm complete all as specified and as directed.

S&F in repairs PP-R Brass Female Threaded Adaptor (FTA) of Size 25mm x 1/2 " complete all as specified and as directed.

S&F in repairs PP-R Brass Female Threaded Adaptor (FTA) of Size 32mm x 1/2 " complete all as specified and as directed.

S&F in repairs of PVC Float valves of Size 20mm dia with Rod of length not less than 325 mm and 8 mm dia with suitable size Ball along with fittings like reducers,etc for the fixing the valve to tank inlet pipe complete all as specified and as directed.

S&F in repairs PP-R Gate valves of Size 25mm complete all as specified and as directed.

S&F in repairs PP-R Gate valves of Size 32mm complete all as specified and as directed.

S&F in repairs 3-layer 25 mm outer dia, ISI marked PP-R (polypropylene random copolymer) concealed pipes SDR 7.4 (PN16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including all PP-R plain & brass threaded polypropylene random fittings fixed complete to walls, ceilings or in floors with wall Clamps etc. including taking down the existing PVC/GI/CPVC pipes complete all as Directed and specified.

All as per item No. 8 above, but outer dia of pipe 32 mm

S&F in repairs 63mm outer dia, ISI marked 3-layer PP-R (polypropylene random copolymer) pipes SDR 7.4 (PN-16) UV stabilized and anti-microbial welded having thermal stability for hot & cold water supply including all PP-R plain & brass threaded polypropylene random fittings laid in trenches including taking up/down existing unserviceable pipes complete all as specified and as directed.

M&L for cutting the existing 25/32 mm PPR Pipe from the tank inlet and connecting it to the PP-R tank connector by Heat fusion method complete all as specified and as directed. Note: Tank connector is measured and paid under relevant item of this schedule.

M&L for connection of 25/32mm PP-R distribution branch with PP-R main by providing and fixing tee including cutting and making fusion joint etc. complete all as specified and as directed.

Collection of water sample from different sources of pump Houses under AGE(I) Suryalanka for water testing by Govt authorised Certified Labouratory as per IS-10500 for drinking water for following parameters including cost of sterilization bottle : (a) Colour hazen (b) Odour (c) Taste (d) Turbidity, NTU (e) PH value (f) Total dissolved solid, mg/ltr (g) Total Hardness (as CaCo3) mg/ltr (h) Chloride (as Cl2), mg/ltr (j) Nitrate (as NO3) mg/ltr (k) Iron (as Fe), mg/ltr (l) Coli form and Ecoli Mg/L Note: Quoated rate includes for transportation of sample water to laboratory complete.

Supply Only of Liquid Chlorine Sodium HypoChlorite (Grade-I) for Drinking Water with Chlorine percentage by mass by Vol is 4.0-6.0% (all Characteristics are as per IS-11673) in sealed non - Chemical reactioned/Oxidation LDPE containers of 60kg Tanks, as required on Monthly basis complete all as directed. Note:- (a)The item shall be supplied in sealed containers of appropriate capacity duly marked with date of manufacturing and batch no. of lot. (b)The Manufacturers test certificate shall be submitted along with each supply. (c) The item supplied shall not more than 02 week old from the date of manufacture. (d) Approval of chemical (Sodium hypochlorite) shall be given after verification of test certificate of chemical of various manufacturers and other factors like chemical and safety and health hazard aspects of usage of chlorination. The brand/make of the chlorination of chemical must be certified by Govt laboratory confirming compliance of specifications suitable for drinking water with a declaration that from the technical strength stability, health safety and operation point of view this product is suitable for drinking water applications / consumption by humans and the brand/make of calcium hypochlorite is suitable for drinking water chlorination.

Supply Only Bleaching Powder Grade I with minimum available Chlorine percentage by mass is 32-34% after 30 days of the manufacturing, (all Characteristics are as per IS-1065) supplied in laminated HDPE bags having two inner liners, duly marked with manufacturer grade, Mass, date of manufacturing and batch No. of lot as directed . Container shall be marked with manufacturer grade, Mass complete all as specified and as dirceted.

De-watering the existing UG Sump of 50,000 Glns capacity and cleaning the internal surfaces of sump to remove scales, mud and other foreign materials, applying surfaces with mixture of bleaching powder and water, finally washing with fresh water and treating with one coat of white wash to internal wall and bottom surfaces etc complete for one time, writing in capital letter with black paint as "Cleaned on (date) & next due on (date), letter's height not less than 5cm complete all as specified and as directed at Suryalanka Pump House and Bapatla Pump House.

De-watering the existing Static Water Tanks of capacity not more than 10,000 Glns capacity and cleaning the internal surfaces to remove scales, mud and other foreign materials, applying surfaces with mixture of bleaching powder and water, finally washing with fresh water and treating with one coat of white wash to internal wall and bottom surfaces etc complete for one time, writing in capital letter with black paint as "Cleaned on (date) & next due on (date), letter's height not less than 5cm complete all as specified and as directed.

De-watering the existing OH Reservior of capacity 20,000 Glns at 18 mtr staging and cleaning the internal surfaces to remove scales, mud and other foreign materials, applying surfaces with mixture of bleaching powder and water, finally washing with fresh water and treating with one coat of white wash to internal wall and bottom surfaces etc complete for one time, writing in capital letter with black paint as "Cleaned on (date) & next due on (date), letter's height not less than 5cm complete all as specified and as directed. Note :- The unit rate quoted for item No-16 to 18 shall deemed to be included for the following :- (a) 250 gm of bleaching powder to be used for every 10 litre of fresh water. (b) All the inlet/outlet/over flow wash out connection shall be cleaned as rust free and any leakage in joints shall be made good. (c) The water available in the tank/UG sums/OH Reservior shall be bailed out to the nearest open drain available. (d) Any damage caused during cleaning the existing assets shall be made good by the contractor without any extra cost. (e) Painting of of pipe inlet/outlet/washout/overflow pipe with various colours as existing along the tank height duly scrapped and applying one coat of red oxide paint and two coats of synthetic enamel paint.

M&L for cleaning of Water Pressure Filtration Plant (Dual Media Filter) of size 1400 x 1500mm of make "Thermax" after removing the filter media (pebbles, crushed gravel, filter sand and Anthratic complete) and refilling the filter media complete including testing the water along with chlorine injector system after cleaning filtration plant and filter media all as directed. Note :- (a) The item for cleaning of Filter material shall be measured and paid separately under relevant items of BOQ. Labour cost for re-filling filter media shall deemed to be included in the quoted rate of this item. (b) Filter media (material) shall kept aside in Pump House while cleaning Filtration Plant and shall refill after cleaning the same.

Cleaning the filter media (pebbles, crushed gravel, filter sand and Anthratic complete) removed vide item No.19 above, all as specified and as directed.

M&L for scraping/rubbing rusted part of filteration plant tanks and welded of holes in (Dual Media) Filter body by arc/gas welding and arresting the leaks complete all as specified and as directed. Note : Each welded portion not be more than 5cm.

M&L for scraping/rubbing the entire filteration plant tanks for removal of old paint, applying one coat of red oxide paint and two coats of synthetic enamel paint of Navy Blue colour for Dual Media Filter (02 Tank along with connected pipe lines) complete all as specified and as directed.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth and getting out in soft/ loose soil, for under ground electric cable, pipes etc. all as directed and specified.

Returning, filling-in, including, spreading, watering and well ramming in layers not exceeding 25 cm thick each, in soft /loose soil complete all as specified & directed.

Removal of surplus soil to a distance not exceeding 50 mtr and depositing where directed by Engineer –in- Charge at a level not exceeding 1.5mtr above the starting point all as directed.

K VENUGOPALA SWAMY

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