REPAIR/ MAINT OF CI/DI/GI PIPE LINE, CHLORINE DOSING PUMP, SUBMERSIBLE PUMP AND CONNECTED WORK AT HASIMARA AND COOCH BEHAR UNDER GE (SOUTH) BINNAGURI

Amount

Excavation in trenches n exc 1.5 mtr wide and n.exc 1.5 mtr deep for pipe line in any type of soil, getting out and leveling of bottom surface to required level all asspecified and directed.

Returning filling in , including spreading, leveling, watering and well ramming in layers not exc 25cm thick all asspecified and directed.

Removing excavated material from site to a distance not exc 50 mtr away and depositing where directed not exc 1.5 mtr from the starting point all as specified and directed.

Taking up cast iron water main including all fitting with spigot socket ends and lead/tyton joints including burning out lead joints and recovering lead of the folllwoing size of pipe for reuse as directed for the following sizes of pipes:-

150mm bore

100mm bore

80mm bore

M&L for cast iron pipes with spigot and socket ends,Lead/Tyton joint centrifugally cast, class LA in any length laid in trenches/road crossing all as specified and directed for the following sizes of pipes:-

150mm bore

100mm bore

80mm bore

Relaying of old serviceable CI pipe in old /new position of trenches including cleaning of pipes internally and externally by wire brush all as specified and as directed by Engineer- in-charge for the following bore of the pipe lines incl necessary joints :-

150mm bore

100mm bore

80mm bore

M&L for fittings for straight, bend,increasing,decreasing or double socket etc) Tee pieces single branches Y junction,double branhes cross (all sockets or socket and spigot) collars, caps and plugs all as specified and directed for 150mm bore.

M & L for run lead joint including jointing material for cast iron pipe of following size of bore :-

150mm bore

100mm bore

80mm bore

M&L flanged joint with 3mm thick rubber gasket nuts bolts etc complete for flanged & CI pipe lines of the following bore :-

150mm bore

100mm bore

80mm bore

Taking up or down steel tubing in trench/ wall with connection including cleaning for removal all as specified and directed for the following sizes :-

50 mm dia bore

40mm dia bore

25 mm dia bore

20 mm dia bore

15 mm dia bore

Relaying /refixing only jointing and testing of old GI pipe including cleaning completedly as directed (serviceable pipe shall be picked up from item No 09 herein before) for the following sizes :-

50 mm dia bore

40mm dia bore

25 mm dia bore

20 mm dia bore

15 mm dia bore

M&L for GI tubing medium grade with all fittings laid in trenches/wall for bore of pipe of following sizes completed all as specified and directed.

50 mm dia bore

40mm dia bore

25 mm dia bore

20 mm dia bore

15 mm dia bore

M&L in repair for Gun metal Gate valve with iron wheel head screwed both sides of following sizes complete all as specified and directed.

50 mm dia bore

40mm dia bore

25 mm dia bore

20 mm dia bore

15 mm dia bore

Supply and fix CI sluice valve Cast iron PN-1.6 flanged end conforming to IS -780/84 with CI wheel, brass spindle, chuck nuts, rubber gasket, bolts (full threded), nuts & washers including joints for the following sizes complete all as specified and directed including dismantling and taking down of old unserviceable CI Sluice valve from existing position complete all as specified and directed.

150mm dia

100mm dia

80mm dia

Supply and fix in repair 150mm dia lever operated butterfly valve with complete accessories such as rubber gasket, bolts (full threded), nuts & washers including joints for the following sizes complete all as specified and directed.

Supply and fix valve ( NRV ) reflux flanged end of size 150 mm dia incl making necessary joints dismantalling and taking out old u/s NRV complete all as specified and directed.

S&F cast iron bib tap screwed for iron pipe of 20 mm dia including taking out old unserviceable one complete all as specified and directed.

S&F cast iron bib tap screwed for iron pipe of 15 mm dia including taking out old unserviceable one complete all as specified and directed.

M&L for cutting the bushes, grass, thorney bushes, small plants / trees up to a height of 5 mtr in and around different E/M installations/ pump houses/ RCC Tank incl surface dressing and removing the waste material to a distance not exceeding 50 mtr from the starting point complete all as specified and directed.

Construction of brick masonary valve pit in repair of size 1200x1200x1200 mm (Internal dimension) with one brick thick wall in CM (1:4) on 100 mm thick PCC (1:4:8) type D2 (using 40 mm graded stone aggregate) as in foundation lean concrete, PCC (1:3:6) type C1 (using 20 mm graded stone aggs) as in bedding and coping and 10 mm thick cement plaster in CM (1:4) internally and externally up to 15 cm below ground level providing valve pit cover made of 3 mm thick MS sheet welded with 40 x 40 x 6 mm angle iron frame all round the top fixed by means of 4 Nos hold fast 150 mm long made out of flat iron 40 x 60 mm embeded in PCC block (1:2:4) type B1 (20 mm graded crushed stone aggs)of size 230 x 200 x 100 mm including provision of hinges, welded with angle iron frame and MS cover, MS handle of suitable length, and size welded with MS cover and suitable locking arrangement with applying two coat of synthetic enamel paint over one coat of red oxide, zinc crome primer and necessary excavation and earth work in soft/ loose soil, complete all as specified and as directed.

All as per item No 58 above but of size 900x900x900mm (internal dimension)

All as per item No 58 here-in-before but of size 600x600x600mm (internal dimension)

Cleaning of over head reservoir/under ground sump all as specified here in after and as directed of capacity 50000 Glns :- (a) removing mud, silt, sand etc from inside tank(depth exc. 1.50 m) and depositing to a distance exc. 50M but n.exc. 100M away from tank, diging a pit of suitable size and depositing in the pit including spreading soil/ return filling not less than 15 cm over deposited material. (b) removing moulds, mosses, foreign materials from inside tank (depth exc 1.50 m) and depositing to a distance exc 50M but n.exc 100M away from tank,diging a pit of suitable size and depositing in the pit including spreading soil/return filling not les than 15 cm over deposited material. (c) spreading bleaching powder @ 1.50 Kg/sqm over the pits dug and filled for (a) and (b) above,

(d)cleaning the internal surfaces of tank and washing with clean water and applying one coat of lime wash inside tank (e) applying two coats of Black Bituminous Paint (non toxic and non-desolving in water complied for drinking purpose) over a coat of primer to the steel surfaces (both internal and external) of the tank. (f) writting the followings with 50mm size letters to the external faces of water tank using Synthetic enamel paint of approved colour over Black painted surface of size 60cm x 40cm :- CLEANED ON :- dd/mm/yyyy CAPACITY :- xxxxxxx GALLONS STAGGING :- xxxxxx Mtrs (g) applying two coats of Synthetic enamel paint/ Black Bituminous Paint over a coat of primer to all exposed steel surfaces such as stair case railings,inlet,outlet and overflow pipes of tank,exposed nuts,bolts etc.

Supply and fix in replacement roller assembly (packet of 04) complete all as specified.

. Supply and fix in replacement injection check valve (packet of 05) complete all as specified.

Supply and fix in replacement weighed suction line strainer 3/8" complete all as specified.

Supply and fix in replacement pump tube (packet of 05) Complete all as specified.

Supply and fix in replacement white suction / discharge tubing 3/8" complete all as specified.

Supply and fix in replacement check valve duckbill only (packet of 05) complete all as specified.

Supply and fix in replacement connecting nut 3/8" with adopter (packet of 05) complete all as specified.

Supply and fix in replacement chlorine dosing pump high pressure single head gear motorised adjustable dosing pump with accessories including lead tubing connecting nuts injection check valve clay weight and ferrules complete all as specified.

Repair / rectification to leakage of GI pipe line 15 to 25 mm dia including necessary earth work and fixing in repairs of GI fittings such as elbow, socket, union , Tee etc all as per site requirement short noticed as fixed complete all as specified and as directed.

Repair / rectification to leakage of GI pipe line 40 to 50 mm dia including necessary earth work and fixing in repairs of GI fittings such as elbow, socket, union , Tee etc all as per site requirement short noticed as fixed complete all as specified and as directed.

NOTE:- For item no. 71.00 and 72.00 Receiving complaint slips of leakage, break down of GI Pipe or any other complaint releted to water supply, as issued by MES Rep from E/M sub Division ( Complaint Cell) Binnaguri under GE (S) Binnaguri including detection of fault and rectify/repair the same to maintain the water supply services smoothly and depositing the complaint slip back duly signed by Users and MES Rep for satisfactorily attending the complaints complete all as specified and as directed.Note - (i) Quoted rates shall deemed to be included for detecting fault including minor additions and alterations and materials in repair as required to make the same serviceable fixed at the same place or other as directed at site. (ii) Complaint slip shall be provided by the contractor duly printed with CA No & Name of firm as per format given by Engr in Charge and the cost shall be deemed to be included in quoted rates. (Note :-In absence of the MES Rep payment will not be allowed during running/Final payment.) (iii) All necessary GI pipe and fitting shall be measured and paid separately (iv) In case of any accident/mishapenning occurred during the repair/replacement of work shall be responsibity of Contractor. (v) The works are not falling under minor repair shall be paid shall be measured and paid separately under respective items of BoQ. (vi)Incase any complaint not rectified within 24 Hrs,penality should be specific (e.g Rs 50/ each complaint not rectified within 24 hrs and the decision of GE/ Engr-in-charge shall be final and binding on the contractor. The rates quoted in Sch ‘A’ in respective item shall be deemed to including these aspects and nothing extra shall be admissible.

Lifting of defective submersible pumping set/unserviceable cable of any make and capacity from bore well after providing lifting tools and tackles as required carefully, disconnecting all electric connections, water connection and dismantling column pipe lines shaft stage by stage and keep them under safe custody for reuse all complete and lowering the same after repairs / overhauling submersible pump/serviceable cable of any make and capacity inside bore wells after coupling with pump and motor connecting column pipe line shaft stage by stage carefully with help of lifting tools and tackles carefully re-connecting all electric/water lines and testing on load upto the satisfactions of Engineer-in-charge complete all as specified and as directed. Notes:- The rates for lifting and lowering of repaired pumping set shall deemed to include the cost following :- (i) Replacement of rusted/ unsv bolts, nuts and washers (ii) Replacement of rubber packaging of flanged joints (iii) Fixing of submersible cable of any size.(iv) Fixing charges for any clamps etc.

M&L for rewindidng of burnt submersible motor 15 to 30 HP, 3 phase 415 Volts 50 Hz of any Make with PVC insulated water proof copper conductor of the same specification as per old one after dismantling cutting out burnt winding from stator assembly, cleaning slots properly complete with insulating slots packing, sleeves, papers, reassembling stator and rotor after replacement of of worn out spares/matching works including painting with two coats of synthetic enamel paints over a coat of red oxide after preparation of motor external surface and water proof jointing for submersible cable 3 core all complete as specified and directed (Note : Supply of spare parts required for overhauling/servicing except winding wire and other as described on the item shall be measured and paid seperately.

Supply only following spare parts of submersible motor of capacity 15 to 30 HP

Thrust bearing plate for carbon TB assy

Bearing bush rubber for motor shaft

Motor shaft sleeves (Stainless steel)

Thrust bearing assy carbon

GM bush for motor shaft

Motor Sand Guard

Oil seal

Motor bearing housing

Copper end ring

Motor coupling key

Motor coupling

Pad for thrust bearing made out of bronze

Pad for thrust bearing made out of Carbon

Stud nut stainless steel

Sir clip

Remetaling, cutting , grinding & polishing of Rotor shaft of capacity 15 to 30 HP in the worn out portion including checking of electricity in the lathe machine all as directed by Engineer-in-charge

Dismantling submersible pump any make of capacity 600 LPM to 1100 LPM for overhauling/servicing cleaning thoroughly discharge/suction capes, impellers shaft and assembling pump carefuly after fixing of spare parts/machining works including applying two coats of synthetic enamel painting after preparation of surface complete including testing on load upto the entire satisfaction of the Engineer-in-Charge. (Note : Supply of spare parts required for overhauling/servicing in place of worn out parts shall be measured and paid separately).

Supply only following parts of submersible Pump of capacity 600-1100 LPM

Gun Metal bush for suction impeller

Gun Metal bush for discharge impeller

Shaft sleeves Stainless steel

Mild Steel stud for bowl assembly

Neck ring Gun Metal

Gun Metal bush for stage carrier

Gun Metal Impeller

Key for impeller

Suction case strainer

Pump shaft stainless steel

Sand Guard

Stage casing

Coupling with key for pump and motor

MS socket heavy duty 8/11 TPI

Remetaling, cutting,grinding, polishing for worn out portion of submersible pump shaft (Pump capacity 600 to 1100 LPM) including fixing new Mild Steel key of suitable size and checking of balanced and properly aligned shaft at lathe Machine all complete as specified and as directed.

S&F Mild Steel Column pipe heavy duty (ERW) both end threaded with one socket /flange of wall thickness 5.04mm & length 3.00 mtr. 150mm bore conforming to IS-1239 (Part-I) 1979, and properly painted with one coat of black bituminous of surface internally and externally suitable for the drinking water including taking out of old unserviceable column pipe from position complete all as specified and as directed by Engineer-in-charge.

All as per item 110 here-in-before but 100 mm dia.

Supply & fixing submersible cable flat PVC insulated & PVC sheathed 1100 volts grade with stranded copper conductor 3 core of size 16sqmm conforming to IS-694-1990 including taking out old UNSV cable from its position and complete as specified and directed.

All as per item 112 here-in-before but of size of cable 10 Sqmm 3 core.

Material & Labour for replacement of worn out MS Angle clamps nuts, bolts, washers etc of suitable length and size as per site requirement for flanged pipes and fitting of sizes complete all as directed by Engr-in-Charge.

S & F Fully Automatic Star- Delta Starter in sheet-steel enclosure motor rating ,415 V, 50Hz,3Ph of capacity 00 HP relay range 28-42 A complete all as specified and directed.

IRON REMOVAL PLANT

Opening top cover of manhole and side hand hole of 10000 GPH capacity vertical type iron removal plant (pressure vessel) ,taking out filter media eg. sand, gravells (different sizes) including taking out carefully strainer (push/thread) from inside bed plate and disposal of unserviceable filter media(sand, gravel, strainer etc) within 100 m radius from the existing plant complete all as directed.

Dismalting hand hole cover, pipe lines by taking out/cutting the old rusted MS bolt nuts and washers, neoprene rubber gasket etc of oxidation shell chamber, taking out manganese Dioxide (MNO2) and removing the same within 100m radius from the existing plant complete all as specified and directed.

Cleaning and scraping the inner periphery of IRP vessel by using wire brush and flushing with fresh water, drying and applying two coats of anticorrrosive bituminous paint over a coat of red oxide primer suitable for potable water complete all as specified and directed.

Cleaning and scraping the outer surface of vessel of IRP and removing rust using wire brush, sand paper etc and painting with two coats of synthetic enamel paint over a coat of red oxide primer including writing type of installation & capcity by synthetic enamel paint of white colour and MES No in dark red colour synthetic enamel paintcomplete all as specified and directed.

Supply and fix new polypropylene strainers double deck type for IRP vessel as per the existing specification complete all as specified and directed.

Supply and filling new graded gravells of different size (gravel of sizes 15" x 1", pebbles of size 1"x1/2",core silex of size 1/2" x 1/4" , fine silex of size 1/4" x 1/8") inside the pressure filters at different location complete all as specified and directed.

Cleaning, scrapping the inner periphery of oxidation chamber, flushing with fresh water drying and applying two coats of anti corrosive black bituminous paint over a coat of red oxide primer suitable for potable water, all as directed.

Cleaning, scraping old rusted external surfaces of oxidation chamber and painting with two coats of synthetic paint over a coat of red oxide primer, all as directed including writing type of installation in white synthetic enamel paint and MES No in dark red colour synthetic enamel paint complete all as specified and directed.

Supply and filling MNO2 in the existing oxidation chamber [[1800kg/cum]] complete all as specified and as directed.

Material & labour for nylon wire mesh including tightening by copper wire of required size inside IRP including taking out old damaged wire mesh complete all as specified and as directed

Dismalting of existing 100 mm bore MS/CI pipe and fitting by opening flange joint cleaning and removing silt, rust by using wire brush and flushing with clean water for both inside & out side of pipes and fittings, painting the outside surface of pipe & fittings with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer and re-fixing in existing position complete all as specified and as directed. (Note : New bolts, nuts & washers shall be measured and paid separately under supply only rate )

M/S RELIABLE CONSTRUCTION CO.