REPAIRS AND MAINTENANCE OF PUMPS, MOTORS INCLUDING CONTROL UNITS AND CONNECTED WATER SUPPLY PLANTS AT MASIMPUR MILITARY STATION UNDER GE SILCHAR

Amount

M&L for disconnecting water and electric connnections and lifting up vertical turbine pump set of capacity 30HP from Jackwell alongwith electric motor and column pipe by unbolting foundation nuts, bolts, etc. and opening up pump-motor set, checking serviceability of motor and pump, carrying out repairs, checking for functionality, lowering in, fixing in position, reconnecting water, electric supply and testing on commissioning at full load complete all as specified and directed Notes: (a) Cost of all necessary T&P required for lifting of pump set shall be included in the quoted rate (b) Work of disconnecting, lifting, etc. will be carried out through experienced mechanic. Any damage to pump-motor set during lifting/lowering, etc. shall be made good by the Contractor (c) Spare parts will be measured and paid separately under relevant items herein (d) All loading, unloading, carting, etc. of pump/motor if required to be shifted to workshop shall be included in the quoted rate (e) Pumps lifted and lowered found non-functional after repairs shall not be measured for any payment

S&F in repairs the following parts suitable for vertical turbine pumps of existing make and as per site complete all as specified and as directed

Top shaft (Stainless Steel)

Bottom shaft (Stainless Steel) 5 feet long

Line shaft (Stainless Steel) 10 feet long 25mm dia

Pump bowel (body)

Rubber bushing for holding retainer

Line shaft coupling

Suction case bushing made out of bronze

Discharge case bushing made out of bronze

Intermediate bowel bushing bronze

Intermediate rubber bushing

Impeller lock collect assembly

Cast iron Retainer

Stud bolt ½ x2’’

Column pipe coupling

Stuffing box suitable for 30HP vertical turbine pump set gland bushing sleeve as per existing size and material including required nuts, bolts, washer, etc. of required size

Brass impellers of suitable size including bushing for 30HP VT pump

Shaft sleeve 6" long with inner thread

Shaft Sleeve 4" long with inner thread

Top column pipe 150mm size (5 feet long)

Bottom column pipe 150mm size (5 feet long)

Pump shaft stainless steel of appropriate size

Reduced type pump shaft to line shaft coupling

M&L for taking out centrifugal pumping sets from foundation, disconnecting the water and electric connnections, transporting to workshop, opening the pump for inspecting all parts to identify defective parts and replacing the defective spares, cleaning, servicing and greasing including refixing in position, re-connecting up and testing and commissioning, including replacing the undermentioned parts (rate shall be included) complete all as specified and as directed for the following capacities: (i) Gun metal bush for pump- 1 Set (ii) Remetalling, grinding, turning and facing of impeller of pump if required (iii) Gland packing (iv) Gland and foundation nuts, bolts and wahers Notes: (a) Work will be carried out through experienced mechanic. Any damage to pump-motor set during lifting/lowering, etc. shall be made good by the Contractor (b) Spare parts will be measured and paid separately under relevant items herein (c) All loading, unloading, carting, etc. as required for shifting to workshop shall be included in the quoted rate

S&F in repairs the following parts suitable for 75HP centrifugal pumps of existing make and as per site complete all as specified and as directed

Roller type bearing SKF-NU-411-304 D Make NBC/SKF/FAG

Ball bearing SKF-7311BEP Make NBC/SKF/FAG

Cast iron impeller as per existing

Cast iron bearing housing as per existing for NDE

Cast iron bearing housing as per existing for DE

Pump shaft sleeve suction side

Pump shaft sleeve delivery side

Pump distance sleeve

Pump bearing lock nut

Set of O rings

S&F in repairs the following parts suitable for 50HP centrifugal pumps of existing make and as per site complete all as specified and as directed

Ball bearing SKF-309EC suitable for induction motor Make-NBC/SKF/FAG

Ball bearing SKF-7309 BEC suitable for induction motor Make- NBC/SKF/FAG

S&F in repairs the following parts suitable for vertical induction motor of capacity 30HP, as per sample and site requirement complete all as specified and as directed

Key for motor coupling

Motor base bottom flange of 150mm dia

Motor terminal plate

Ball bearing SKF-6212/C3 Make NBC/SKF/FAG

Ball bearing SKF-6310/C3 Make NBC/SKF/FAG

M&L for decoupling pump and vertical induction motor, opening the body of motor, 3 phase, 415V, taking out burnt/defective winding wire carefully without damaging the stator, cleaning the slot, rewinding the stator with super enamelled copper winding wire as per original gauge/size/type/data, as per relevant IS, including providing new insulating materials viz. cotton tape, packing, sleeves, etc. and varnishing by vacuum impregnation and baking of coil core assembly, alongwith insulating material, greasing varnishing including replacement of bearing as per existing size and type, painting externally with two coats of synthetic enamel paint (of approved tint) on preparing of surfaces, reassembling/ fixing the motor and pump set at its original location, making proper allignment and connecting up complete all as specified and as directed of the following capacities of pumps:

S&F in repairs the following parts suitable for centrifugal motor of capacity 75HP, as per sample and site requirement complete all as specified and as directed

Nut & bolt with rubber shoe type coupling

Star type rubber coupling (Love&Joy coupling)

S&F in repairs the following parts suitable for induction motor of capacity 50HP, as per sample and site requirement complete all as specified and as directed

Rubber type tyre coupling

Ring gland jam nut

S&F in repairs pressure meter gauge of any range of range 28/35psi complete all as specified and as directed

S&F in repairs electrical insulated rubber mat, ISI marked, 2mm thick, 1x2m size, suitable for 440V complete all as specified and as directed

Taking up/down old rusted / unserviceable GI water main pipes, 100mm bore, with all fittings including, etc. and disposing off complete all as specified and as directed

Taking up/down old rusted / unserviceable DI water main pipes with spigot and socketed / flanged ends with all fittings including burning out lead joints and recovering lead, etc. and disposing off complete all as specified and as directed of following sizes:

M&L for DI pipes with socketed and spigot and socketed ends suitable for tyton joints centrifugally cast (spun) class K-9 conforming to IS:8329 cut to any length laid in trenches including rubber gaskets joints complete all as specified and as directed for the following sizes: Note: Fittings shall be measured and paid separately under respective item

M&L for DI pipes with flanged ends suitable for centrifugally cast (spun) class K-9 conforming to IS:8329 cut to any length laid in trenches including rubber gaskets joints complete all as specified and as directed for the following sizes: Note: Fittings shall be measured and paid separately under respective item

M&L for ductile iron specials / fittings like bends (any type, radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc.), tee pieces single branch 'Y' junction, double branch, cross (all sockets or socket and spigot), collars, caps, plug, etc. complete all as specified and as as directed suitable for the following bores of pipes: Note: Lead joint, excavation and earthwork shall be measured and paid separately under respective items

150mm bore

250mm bore

M&L for drilling and cutting into CI/DI water mains (in position) of 250mm bore for tapping branch connections, etc. complete all as specified and as directed

M&L for drilling and cutting into CI/DI water mains (in position) of 200mm bore for tapping branch connections, etc. complete all as specified and as directed

S&F cast iron non-return valves, both sides flanged and drilled with holes for bolts and nuts, etc. including flanged joints with rubber gasket, bolts, nuts and washer, etc. by cutting the existing pipe where required, welding of flanges including taking out and disposing off old unserviceable valves complete all as specified and as directed of the following sizes:

250mm dia

200mm dia

150mm dia

S&F in repair MS nuts, bolts, washers of various size as required while carrying out repair works of pump set, sluice valve, NRV, foot valve, etc. complete all as specified and directed

M&L for lowering MS ERW column pipe socketed, 150mm bore, minimum wall thickess 5.4mm, heavy duty, with 2Nos. new submersible cable and repaired pump set in the existing bore hole of tube wells complete all as specified and as directed

S&F cast iron foot valves, conforming to IS-4038, ISI marked including taking out and disposing off old unserviceable valves complete all as specified and as directed of the following sizes:

80mm dia

100mm dia

150mm dia

M&L for disconnecting water and electric connnections and lifting up pump set of 30HP capacity from Jackwell alongwith electric motor and column pipe by unbolting foundation nuts, bolts, etc. and opening up pump-motor set, checking serviceability of motor and pump, carrying out repairs, checking for functionality, lowering in, fixing in position, reconnecting water, electric supply and testing on commissioning at full load complete all as specified and directed Notes: (a) Cost of all necessary T&P required for lifting of pump set shall be included in the quoted rate (b) Work of disconnecting, lifting, etc. will be carried out through experienced mechanic. Any damage to pump-motor set during lifting/lowering, etc. shall be made good by the Contractor (c) Spare parts will be measured and paid separately under relevant items herein (d) All loading, unloading, carting, etc. of pump/motor if required to be shifted to workshop shall be included in the quoted rate (e) Pumps lifted and lowered found non-functional after repairs shall not be measured for any payment (f) Proper safety measures shall be taken in the entire work and the same shall be included in the quoted rate

M&L for repairs to steel overhead water tank of capacity 10000 gallons for aresting leakages by means of welding, patch works by replacing and welding mild steel to plates, supporting angle iron, nuts, bolts, making modifications, additions, alterations, etc. to existing MS staging/base for water tank including providing new suitable locking arrangement to tank cover complete all as specified and as directed Note: Mild steel will be measured and paid separately under respective items herein

S&F joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc. (cut to ordinary lengths i.e. within 20mm of the length indicated) as in compound girders, stanchions, lattice girders, aerial masts, staging for water tanks, etc. complete all as specified and as directed

S&F 5mm thick plates (plain or chequered) channels, square cut or notched (ordinay and counter sunk) forming holes, without any attachment of Fe 410W grade-E -250 including all necessary cutting, welding, riverting, etc. complete all as specified and as directed

M&L for preparation of old steel / cast iron surfaces of any description by scrapping of old paint, smoothening of surfaces and painting with two coats of synthetic enamel paint (of approved tint) over a coat of red oxide primer on iron complete all as specified and as directed

M&L for 20mm stainless steel wire rope SS 304 grade and fixing to existing chain pulley block including taking off old damaged rope complete all as specified and as directed

S&F in repairs bearing, ISI marked of existing type and size, suitable for lifting chain pulley block for vertical terbine pump complete all as specified and as directed

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for foundations, manholes, etc. or for laying cables/pipes, erecting poles, etc. not exceeding 10sqm on plan and getting out in soft / loose soil complete all as specified and as directed

Returning, filling in, including, spreading, leveling, watering and well ramming in layers not exceeding 25cm deep as in any type of soil complete all as specified and as directed

Removing excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point in any type of soil including spreading in low lying area and leveling complete all as specified and as directed

Younus Khan (BID ID -3088083)

MS AFTAB LASKAR (BID ID -3090057)

Bhuiya Construction (BID ID -3088946)