REPAIR/MAINTENANCE OF PS OVERHEAD TANK, IRON REMOVAL PLANT, UNSERVICEABLE EXTERNAL WATER SUPPLY VALVES, PIPELINES, TANK CLEANING/REPLACEMENT OF UNSERVICEABLE CI/GI PIPELINE WITH PP-R PIPELINE/OTHER CONNECTED MISC ITEMS OF WORKS AT AFS MOHANBARI

Amount

Excavating in trenches, not exceeding 1.5 m wide and not exceeding 1.5 m in depth for laying of cables, pipes etc. and getting out including trimming the sides and forming bottom surfaces to required levels in soft/loose soil complete all as specified and directed by Engineer-in-charge.

Returning, filling in, including spreading, levelling, and well ramming in layer not exceeding 25 cm thick in soft/loose soil complete all as specified and directed by Engineer-in-charge.

Removing excavated material (soil) to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and directed by Engineer-in-charge.

Taking up or down old unserviceable GI/CI tubing with fittings) 25 mm bore and connections/fittings including cleaning for refixng or removal to store of following bore of pipe complete all as specified and directed by Engineer-in-charge. ( Excavation and earthwork measured and paid separately.

All as per item No. 4 above but 40 mm bore dia.

All as per item No. 4 above but 50 mm bore dia.

All as per item No. 4 above but 80 mm bore dia.

All as per item No. 4 above but 100 mm bore dia.

Supply and laying 3 layer PP-R Polypropylene random copolymer concealed pipes 25 mm outer dia, SDR 7.4 ( PN16) , UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R Plain and brass threaded polypropylene random fittings laid in trenches / wall including all fittings complete all as specified and directed by Engineer-in-charge.

All as per item No. 9 above but 32 mm outer dia.

Supply and laying 3 layer PP-R Polypropylene random copolymer concealed pipes 63 mm outer dia, SDR 11 ( PN10) , UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R Plain and brass threaded polypropylene random fittings laid in trenches / wall including all fittings complete all as specified and directed by Engineer-in-charge.

All as per item No. 11 above but 90 mm outer dia.

All as per item No. 11 above but 110 mm outer dia.

Supply & fixed in repairs, PP-R Gate valves ( brass insert) 25 mm outer bore of pipe, complete all as specified and directed.

Supply & fixed in repairs, PP-R Gate valves ( brass insert) 32 mm outer bore of pipe, complete all as specified and directed.

Supply & fixed in repairs, PP-R Gate valves ( brass insert) 63 mm outer bore of pipe, complete all as specified and directed.

Material and Labour for opening of sluice valves for rectifying leakage of size 80 mm dia, refacing, regrinding and re-fixing with new gland packing, gasket after repair including testing complete all as specified and directed by Engineer-in-charge. Note :- MS work shall be measured and paid separately i.e. nut bolt etc.

Material and Labour for opening of sluice valves for rectifying leakage of size 100 mm dia, refacing, regrinding and re-fixing with new gland packing, gasket, after repair including testing complete all as specified and directed by Engineer-in-charge. Note :- MS work shall be measured and paid separately i.e. nut bolt etc.

Material and Labour for opening of sluice valves for rectifying leakage of size 150 mm dia, refacing, regrinding and re-fixing with new gland packing, gasket, after repair including testing complete all as specified and directed by Engineer-in-charge. Note :- MS work shall be measured and paid separately i.e. nut bolt etc.

Supply and fixed in repairs, Cast Iron sluice valve of 150 mm bore, class PN 1.6 duly ISI Marked, (conforming to IS-14846-2000) with iron wheel head both end flanged , brass spindle any pattern with GM check nut complete with jointing material, nuts, bolts and washers etc. complete all as specified and directed by Engineer-in-charge.

All as per item No.20 above but 100 mm bore pipe

All as per item No.20 above but 80mm bore pipe

Supply and fixed in replacement, connecting and testing reflux valve (non return valve ISI -5312) CI suitable for 100 mm bore pipe heavy duty both end flanged of pressure rating PN 1.6 and jointing with joint with rubber or fibre board gasket complete with and including required nos size of nuts, bolts and washers complete all as specified and directed by Engineer-in-charge.

Material and Labour for lifting of submersible mortor pump set (upto 20 Hp) from existing borewell of depth upto 30 Mt with the help of chain pully carefully including MS/GI pipe and submersible cable and lowering the submersible pumps set into the existing borewell upto a depth of 30 Mt including submersible cable and GI tubing/ MS tubing including repair/ overhauling of submersible pump by replacing the bush impeller, thrust bearing, nuts and bolts, washers, bowl, neck ring, SS Shaft key and winding the motor with existing gauge copper wire etc and repair to pump set by re-metaling, grinding, polishing on lathe machine, greasing and reassembling the pump set with complete testing including painting with 2 coat of enamel paint (1 st quality) over a coats of zinc chrome primer complete all as specified and directed by Engineer-in-charge. Note:- (i) Spares required for repairs and replacement shall be measured and paid seperately under respective item. (ii) Quoted rate shall deemed inclusive of labour element for repair and replacement of spares. (iii) Inventory of all defective parts required to be replaced will be recorded in a separate register alongwith Pump No. & location / area and before replacement duly signed by JE, Engineer-In-Charge & contractor and the same shall be produced as and when desired for verification. ( iv) Proper gate pass and issue voucher and recipt voucher shall be maintained out side MD Land repair works are to be carried out for motor pump. (v) Cost of small parts such as,nuts,bolts, are deemed to be included in quoted rate.

Supply only Bowl for submersible pump.

Supply only Impeller for submersible pump.

Supply only Bushing for submersible pump.

Supply only Neck ring for submersible pump.

Supply only SS shaft for submersible pump.

Supply only Key for submersible pump 1' long.

Supply only Coupling for submersible pumpset..

Supply only Thurst bearing for submersible motor.

Supply only Sar clip for motor.

Supply only Upper housing for submersible motor.

Supply only Lower housing for submersible motor.

Supply only Motor bushing.

Supply and fixing in repairs PVC insulated copper cable, HRFR, water proof best quality of size 3 core 10 Sqmm multistranded for connection to submersible pump set of capacity upto 20 HP, testing and commissioning complete all as specified and directed by Engineer-in-charge.

Supply and fixing in repairs PVC insulated copper cable, HRFR, water proof best quality of size 3 core 6 Sqmm multistranded for connection to submersible pump set of capacity upto 20 HP, testing and commissioning complete all as specified and directed by Engineer-in-charge.

Supply and fixing in repairs the water level indicator and replacement of nylon rope into SWR 6 sqmm dia of water level indicator of existing length, greasing and repair to rope guide pully and replacement of unserviceable PVC float valves at over head tank of height 40' to 50' andcomplete all as specified and directed by Engineer-in-charge.

Supply and fixing in repair BP dozer of capacity 24 Gallons/105 Litres inlet outlet pipe with pipe connection and all accessories complete all as specified and directed by Engineer-in-charge.

Material and labour for opening BP dozer capacity 24 gallons, cleaning inside of the BP dozer including supply and fixing best quality bladder complete - 01 set, top plate & nozzle assembly( as per sample approved by GE) - 01 set, stop valve 1/2'' - 01 No. incl preparation of rusted existing surfaces and painting with two coat of aluminium oxide primer complete all as specified and directed by Engineer-in-charge.

Supply and fixing in repairs CI venturi of size 100 mm dia having arrangement for dosing of bleaching/ALTOCH GP solution complete all as specified and directed by Engineer-in-charge.

Dismantling of versatile chemical chloropower plant complete overhauling of plant model EA-12 including setting of premix calibration, repair/replacement of pressure valve/anti syphone spring ring set, checking of solinised coil. Replacement of US pilot lamps, diaphergum, trenslucent type - 09 Rm, testing and commissioning complete all as specified and directed by Engineer-in-charge.

Taking up existing CI/GI water mains, 100 mm bore dia ( including all fittings ) by disconnecting , spigot and socket ends and lead joints including burning out joints and recovering lead, cleaning of pipe by using wire brush internal and external surfaces complete for relaying complete all as specified and directed by Engineer-in-charge. Note:- (i) Excavation in trenches work shall not be paid extra.

Taking up existing CI/G water mains, 80 mm bore dia ( including all fittings ) by disconnecting , spigot and socket ends and lead joints including burning out joints and recovering lead, cleaning of pipe by using wire brush internal and external surfaces complete for relaying complete all as specified and directed by Engineer-in-charge. Note:- (i) Excavation in trenches work shall not be paid extra.

Laying only of cast iron water mains, 100 mm bore dia ( including all fittings ) complete all as specified and directed by Engineer-in-charge. Note:- (i) Returning filling of earth work shall not be paid extra.

Laying of cast iron water mains, 80 mm bore dia ( including all fittings ) complete all as specified and directed by Engineer-in-charge. Note:- (i) Returning filling of earth work shall not be paid extra.

Material and labour in run lead joints suitable for spigot & socketed CI Pipe, 80 mm bore and gland packing wherever necessary and all jointing materials to make the joint absolutely leak proof complete all as specified and directed by Engineer-in-charge. (Note: Lead recovered from item No. 33 to be used)

Material and labour in run lead joints suitable for spigot & socketed CI Pipe, 100 mm bore and gland packing wherever necessary and all jointing materials to make the joint absolutely leak proof complete all as specified and directed by Engineer-in-charge.(Note: Lead recovered from item No. 32 to be used)

Supply, laying, jointing and testing Mild steel galvanised water tubing, 25 mm bore dia, medium grade, with and including all GI fittings in trenches complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation & earthwork shall be measured & paid separately under appropriate item) (ii) All fittings required for laying / fixing shall be brought by the contracor and cost there of shall deemed to be included in the quoted rates.

Supply, laying, jointing and testing Mild steel galvanised water tubing, 40 mm bore dia, medium grade, with and including all GI fittings in trenches complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation & earthwork shall be measured & paid separately under appropriate item) (ii) All fittings required for laying / fixing shall be brought by the contracor and cost there of shall deemed to be included in the quoted rates.

Supply, laying, jointing and testing Mild steel galvanised water tubing, 50 mm bore dia, medium grade, with and including all GI fittings in trenches complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation & earthwork shall be measured & paid separately under appropriate item) (ii) All fittings required for laying / fixing shall be brought by the contracor and cost there of shall deemed to be included in the quoted rates.

Supply, laying, jointing and testing Mild steel galvanised water tubing, 80 mm bore dia, medium grade, with and including all GI fittings in trenches complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation & earthwork shall be measured & paid separately under appropriate item) (ii) All fittings required for laying / fixing shall be brought by the contracor and cost there of shall deemed to be included in the quoted rates.

Supply, laying, jointing and testing Mild steel galvanised water tubing, 100 mm bore dia, medium grade, with and including all GI fittings in trenches complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation & earthwork shall be measured & paid separately under appropriate item) (ii) All fittings required for laying / fixing shall be brought by the contracor and cost there of shall deemed to be included in the quoted rates.

Supply, laying, jointing and testing Mild steel galvanised water tubing, 80 mm bore dia, medium grade, with and including all GI fittings fitted to 10,000 gallons capacity PS over head water tank installed on 40' to 50' height staging complete all as specified and directed by Engineer-in-charge. Note :- (i) (Note :- Cost of bamboo etc required for staging/working platform shall be included in the overall rates quoted)

Supply, laying, jointing and testing Mild steel galvanised water tubing, 100 mm bore dia, medium grade, with and including all GI fittings fitted to 10,000 gallons capacity PS over head water tank installed on 40' to 50' height staging complete all as specified and directed by Engineer-in-charge. Note :- (i) (Note :- Cost of bamboo etc required for staging/working platform shall be included in the overall rates quoted)

Supply and fixing in repair fully automatic Star-Delta strater for submersible pump set of rating 25 HP, 415 volt, 50 Hz, single phase with suitable thermal relay, preventer panel mounting and necessary connection complete all as specified and directed by Engineer-in-charge.

Dismantling of unserviceable/ cracked valve pit chamber of size (400 mm x 400 mm x 400 mm, internal size) and including removal of demolished material and rusted mild steel cover and frame to a distance not exceeding 50 mtrs complete all as specified and directed by Engineer-in-charge.

Dismantling of unserviceable/ cracked valve pit chamber of size (900 mm x 900 mm x 900 mm, internal size) and including removal of demolished material and rusted mild steel cover and frame to a distance not exceeding 50 mtrs complete all as specified and directed by Engineer-in-charge.

Material and labour for construction of valves pit chamber of internal dimension (400 mm x 400 mm x 400 mm ), using PCC (1:4:8) type D2, 40 mm graded stone aggregate for foundation 15 cm thick, 23 cm thick wall with sub class new 'B' bricks in CM (1:4), 10 mm thick rendering all around the brick work with 1:4 cement mortar PCC (1:3:6) type C1 coping/bedding with 20 mm graded agregate for grouting MS frame including 3 mm thick MS top sheet cover with locking arrangement including 50 mm pad lock with double key arrangement, MS frame out of 40 x 40 x 5 mm thick angle iron including paintaing of steel surface with two coats of synthetic enamel paint over a coat of red oxide primers finishing coat and three coats of white wash on plastered surface (exposed to view) including necessary excavation in any type of soil, returning filling in and removal of surplus soil to a distance not exceeding 50 mtrs all as specified complete all as specified and directed by Engineer-in-charge.

Material and labour for construction of valves pit chamber of internal dimension (900 mm x 900 mm x 900 mm ), using PCC (1:4:8) type D2, 40 mm graded stone aggregate for foundation 15 cm thick, 23 cm thick wall with sub class new 'B' bricks in CM (1:4), 10 mm thick rendering all around the brick work with 1:4 cement mortar PCC (1:3:6) type C1 coping/bedding with 20 mm graded agregate for grouting MS frame including 5 mm thick MS top sheet cover with locking arrangement including 50 mm pad lock with double key arrangement, MS frame out of 40 x 40 x 6 mm thick angle iron including paintaing of steel surface with two coats of synthetic enamel paint over a coat of red oxide primers finishing coat and three coats of white wash on plastered surface (exposed to view) including necessary excavation in any type of soil, returning filling in and removal of surplus soil to a distance not exceeding 50 mtrs all as specified complete all as specified and directed by Engineer-in-charge.

Supply and Fixing in repairs hand wheel for sluice valve 80/100mm.complete all as specified and directed by Engineer-in-charge. Make: Ramco or equivalent.

Supply & fixed in repairs, 25 mm bore, gun metal globe gate valve, yoke type, full opening with iron wheel head, screwed both ends , heavy duty, ISI marked conforming to IS-778 complete for iron pipe of following sizes complete all as specified and directed by Engineer-in-charge.

Supply & fixed in repairs, 40 mm bore, gun metal globe gate valve, yoke type, full opening with iron wheel head, screwed both ends , heavy duty, ISI marked conforming to IS-778 complete for iron pipe of following sizes complete all as specified and directed by Engineer-in-charge.

Supply & fixed in repairs, 50 mm bore, gun metal globe gate valve, yoke type, full opening with iron wheel head, screwed both ends , heavy duty, ISI marked conforming to IS-778 complete for iron pipe of following sizes complete all as specified and directed by Engineer-in-charge.

Cutting of existing CI/GI pipe, 80 mm bore, in position for Insertion of new tee of size 80 mm complete all as specified and directed by Engineer-in-charge.

Cutting of existing CI/GI pipe, 100 mm bore, in position for Insertion of new tee of size 100 mm complete all as specified and directed by Engineer-in-charge.

Material and labour in repairs run lead joints suitable for spigot & socketed CI Pipe, 80 mm bore and gland packing wherever necessary and all jointing materials to make the joint absolutely leak proof including burning out lead joint in position, removing & recovering old lead & including necessary earth work excavation as required complete all as specified and directed by Engineer-in-charge. (Note: Qty of Lead required if any for this joint shall not be paid extra.)

Material and labour in repairs run lead joints suitable for spigot & socketed CI Pipe, 100 mm bore and gland packing wherever necessary and all jointing materials to make the joint absolutely leak proof including burning out lead joint in position, removing & recovering old lead & including necessary earth work excavation as required complete all as specified and directed by Engineer-in-charge. (Note: Qty of Lead required if any for this joint shall not be paid extra.)

Material and labour in repairs run lead joints suitable for spigot & socketed CI Pipe, 150 mm bore and gland packing wherever necessary and all jointing materials to make the joint absolutely leak proof including burning out lead joint in position, removing & recovering old lead & necessary earth work excavation as required complete all as specified and directed by Engineer-in-charge. (Note: Qty of Lead required if any for this joint shall not be paid extra.)

Supply and fixed in repairs chlorine dozing LDPE pipe with nozzle threaded for supply line complete all as specified and directed by Engineer-in-charge.

Material and labour for cleaning of internal surface of 10000 Gallons capacity Steel PS OH tank installed at height of 40' to 50' by scraping with brush, rubbing down scales, dirt, sludge etc and washing with clear water using bleaching powder/caustic soda and taking all rubbish from the tank and removing the same to outside MD land at any distance including the writing of date of cleaning complete all as specified and directed by Engineer-in-charge.

Material and labour for cleaning external steel surface of existing PS OH tank of 10000 Galllons capacity installed at height of 40' to 50'of by complete removal of old paints/rust by applying detergent and scrapping/wire brushing/sand papering and washing with clear water and painting of external surface of PS OH tank complete with two coats of aluminium paint over a coat of red oxide primer including painting of structure, sluice valve and connected all pipe lines from tank to borewell as per colour coding complete all as specified and directed by Engineer-in-charge. Note: Work shall be carried out in safety norms and all safety shall be provided by the contractor and no extra claim shall be admissable at later stage.

Opening completely pressure filter & oxidation chamber of capacity 10000 GPH and taking out existing filter media (sand, gravells) stainers and nozzles, removing and depositing filter media to a distance not exceeding 50 m for reuse at site and strainer and nozzles to MES stores yard including necessary repair/welding to make the pressure filter vessels complete leak proof for improving the strength and finally reassembling the pressure filter including filling of new strainer, gravles & sand in existing position duly cleaned replacing worn out gasket and nut bolts and washers complete all as specified and directed by Engineer-in-charge. ( Note-Nozzles, strainers, gravels shall be measured and paid seperatley under relevant items)

Supply only of PVC push type/threaded type strainer suitable for filteration plant complete all as specified and directed by Engineer-in-charge.

Supply only special coarse sand passing through 3.125 x 1.56 mm mesh suitable for use in filteration plant complete all as specified and directed by Engineer-in-charge.

Supply only new washed, cleaned, dust free, gravel of grading 25 mm to 20 mm. graded filter media suitable for use in filteration plant complete all as specified and directed by Engineer-in-charge.

Supply only new washed, cleaned, dust free, gravel of grading 20 mm to 12 mm. graded filter media suitable for use in filteration plant complete all as specified and directed by Engineer-in-charge.

Supply only new washed, cleaned, dust free, gravel of grading 12 mm to 06 mm. graded filter media suitable for use in filteration plant complete all as specified and directed by Engineer-in-charge.

Supply only new washed, cleaned, dust free, gravel of grading 06 mm to 03 mm. graded filter media suitable for use in filteration plant complete all as specified and directed by Engineer-in-charge.

Filling of old washed, cleaned, dust free, gravel of grading 25 mm to 03 mm. graded filter media suitable for use in filteration plant material obtained from item No. 66 complete all as specified and directed by Engineer-in-charge.

Material and labour for prepration of old painted steel/iron surfaces of pressure filter & oxidation chamber of capacity 10000 GPH by scrapping and cleaning of internal surfaces and applying two coats of black bituminious anti corrosive paint suitable for drinking water and marking the date of cleaning on the body complete all as specified and directed by Engineer-in-charge.

Supply and fixing in repair in layers mix of manganese dioxide (MnO2) and treated carbofil in lumps of size 20 mm to 15 mm containing 65% of manganese Dioxide and 35% KG carbofil suitable for use in filltration plant complete all as specified and directed by Engineer-in-charge.

Material and labour for preparation of old plastered surface of wall of valve pit of size 600mm x 600mm x 600mm and applying three coats of white wash on inner and outer surface of wall of valve pit, complete all as specified and directed by Engineer-in-charge.

Material and labour for mild steel bracing/channel/angle iron support fabricated from structural steel sections including MS nuts, bolts and washers with necessary welding, bending cold or hot, drilling holes for bolts in any shape of size for connecting PS tank plates on height 40 feet to 50 feet including two coats of black bituminous paint suitable for storage of drinking water including taking down existing complete all as specified and directed by Engineer-in-charge.(Note :- Cost of staging/working platform involved shall be deemed to be included in the unit rate quoted).

Material and labour for lifting of submersible mortor pump set (upto 20 Hp) from existing borewell of depth upto 30 Mt with the help of chain pully carefully and developing tube well by over pumping for tube well complete after development by compressor and water shall be used only after receipt of satisfactory test result as per IS, all as specified and directed. Note :- Over pumping will be carried out by pumping the water at higher capacity i.e. not less than 50% above the yield of bore well. Cost of arranging pump and compressor is deemed to be included in the unit rate quoted complete all as specified and directed by Engineer-in-charge.

KP GHOSH AND CO