CA No GE (I) (AF) /SHL/ OF 2022-2023 REPAIRS TO CENTRIFUGAL PUMPS ,MOTORS , STARTER PANELS , PS TANKS AND ALLIED WORKS AT AF STATION LAITKOR PEAK UNDER GE(I) AF SHILLONG

Amount

Note : All unserviceable materials obtained out of demolition/dismantling/taking down (other than those for which credit catered under Schedule of credit) shall be disposed of outside MoD Land. Quoted rates against respective item shall deemed to include for same.

Disconnecting carefully 100/120 HP centrIfugal pump from motor, suction/delivery pipe and from foundation complete, lifting the pump from site of installation and transporting to workshop for repair, dismantling the bearing, impeller, shaft with key, outer casing etc and reassembeling the pump after repairs/replacement of unserviceable parts/components, cutting the key slot and turning the shaft on lathe machine, testing at workshop and transporting the same from workshop site and re-installation of pump and fitting on foundation and coupling with motor with proper alignment incl necessary testing and commissioning complete all as specified and directed. Notes : (a) Cost of labour for replacement of new spares/component shall be deemed to be included in quoted rates. (b) New spare parts/components shall be measured and paid as Supply only under respective items of BOQ here-in-after. (c) Cost of cosumables like Oil/Grease/Lubricants shall be deemed to be included in quoted rates.

Supply only following spares/components of 100/120 HP centrIfugal pump :-

Gun metal/bronze impeller of existing size suitable for centrifugal pump.

High carbon steel shaft with keys suitable for centrifugal pump.

Steel shaft coupling set complete suitable for centrifugal pump.

Gland packing of suitable size at both the side of pump for prevention of leakage.

Driving end bearing No. N 316 suitable for pump set

Disconnecting carefully 100/120 HP three phase induction motor from pump, starter panel and foundation complete, lifting the motor from site of installation and taking the motor to repair workshop in vehicle, dismantling the unserviceable winding, cleaning the slots and rewinding with super enamelled copper winding wire with existing guage, turns and weight, insulating sleeves including varnishing and baking properly and reassembeling the motor after replacement of unserviceable parts/components, testing at workshop and transporting the same from workshop to site, re-installation and necessary testing and commissioning complete all as directed. Notes : (a) Cost of labour for replacement of new spares/component shall be deemed to be included in quoted rates. (b) New spare parts/components shall be measured and paid as Supply only under respective items of BOQ here-in-after. (c) Cost of cosumables like Oil/Grease/Lubricants shall be deemed to be included in quoted rates.

Supply only following spares/components of 100/120 HP induction motor :-

Driving end bearing No 6317 suitable for motor

Non driving end bearing No 6314 suitable for motor

Taking out old unserviceable flat submersible cable and Supply and fixing/laying multistranded copper conductor flat submersible cable PVC insulated and PVC sheathed 1100 volts grade conforming to IS-694 with necessary copper lugs pin/ring type and passed through PVC flexible conduit wherever directed complete all as specified and directed for following size cables:-

3 core 16 Sqmm

3 core 50 Sqmm

Taking out old unserviceable single core 50 Sqmm cable and Supply and fixing single core 50 Sqmm Heat Resistant Flame Retardant HRFR PVC Insulated Industrial Cables multistranded copper conductor cable PVC insulated and unsheathed 1100 volts grade conforming to IS-694 with necessary copper lugs pin/ring type and passed through PVC flexible conduit wherever directed as in jumpers of Starter panel complete all as specified and directed.

Taking down all parts of Starter panel of 100/120 HP pump set including existing wiring and M & L for preparation of old existing door, inner & outer steel or iron surfaces of starter panel in position including removal of disintegrated and deteriorated paint by scrapping out with wire brush or iron scrubber, applying a coat of red oxide primer and one under coat, one finish coat of synthetic enamel paint with spray gun machine for smooth finish including writing letter and complete re-assembling of Starter panel by refixing the old serviceable parts/new parts with complete rewiring of starter panel with 1.5/2.5/6 sqmm (as per existing size) Heat Resistant Flame Retardant HRFR PVC Insulated Industrial Cables multistranded copper conductor cable PVC insulated and unsheathed 1100 volts grade conforming to IS-694 with appropriate sleeves, copper lugs pin/ring type as required including marking Nos, spiral PVC conduit, PVC clamps, proper alingnment of wires and testing after re-assembling the Starter panel complete all as specified and directed. Notes : (a) Cost of labour for replacement of new spares/component shall be deemed to be included in quoted rates. (b) New spare parts/components shall be measured and paid as Supply only under respective items of BOQ here-in-after.

Supply only following spares/components in Starter panel of 100/120 HP pump set:-

Power contactor, 3 Pole, Type MNX 110 with 2NO+ 2NC auxiliary contacts confirming to IS/IEC 60947-4-1, coil voltage 415 volts Cat Part No. CS 94137 of Make L & T or equivalent model of Makes listed in List of makes.

Power contactor, 3 Pole, Type MNX 140 with 2NO+ 2NC auxiliary contacts confirming to IS/IEC 60947-4-1, coil voltage 415 volts Cat Part No. CS 94138 of Make L & T or equivalent model of Makes listed in List of makes.

Thermal overload relay, CT operated, type MN 12 suitable for MNX contactor separate mounted, ralay range 135 to 225 Amps, Cat Part No SS 94138OOPO of Make L & T or equivalent model of Makes listed in List of makes.

Electronic Timer type ET 100 range 36 to 120 secs suitable for 100/120 HP starter Cat Part No ST0328OOOO of Make L & T or equivalent model of Makes listed in List of makes.

Taking down all parts of Starter panel of 15 HP pump set including existing wiring and M & L for preparation of old existing door, inner & outer steel or iron surfaces of starter panel in position including removal of disintegrated and deteriorated paint by scrapping out with wire brush or iron scrubber, applying a coat of red oxide primer and one under coat, one finish coat of synthetic enamel paint with spray gun machine for smooth finish including writing letter and complete re-assembling of Starter panel by refixing the old serviceable parts/new parts with complete rewiring of starter panel with 1.5/2.5/6 sqmm (as per existing size) Heat Resistant Flame Retardant HRFR PVC Insulated Industrial Cables multistranded copper conductor cable PVC insulated and unsheathed 1100 volts grade conforming to IS-694 with appropriate sleeves, copper lugs pin/ring type as required, spiral PVC conduit, PVC clamps, proper alingnment of wires and testing after re-assembling the Starter panel complete all as specified and directed. Notes : (a) Cost of labour for replacement of new spares/component shall be deemed to be included in quoted rates. (b) New spare parts/components shall be measured and paid as Supply only under respective items of BOQ here-in-after.

Supply only following spares/components in Starter panel of 15 HP pump set:-

Power contactor, 3 Pole, Type MNX 40 confirming to IS/IEC 60947-4-1, coil voltage 415 volts Cat Part No. CS 94190 of Make L & T or equivalent model of Makes listed in List of makes.

Thermal overload relay, Direct operated, type MN 2 suitable for MNX contactor separate mounted, ralay range 20 to 33 Amps, Cat Part No SS 94145OOEO of Make L & T or equivalent model of Makes listed in List of makes.

Electronic Timer type ST 100 range 12 to 120 secs suitable for 15 HP starter Cat Part No ST80329OOOO of Make L & T or equivalent model of Makes listed in List of makes.

S & F in replacement water pressure gauge range 0 to 40 Kg/cm2 or 0 to 600 lb/in2 fixed with 20 mm bore pipe fitted in main delivery pipe of 150 mm bore as per existing suitable for 100/120 HP Pump including testing complete all as specified and directed.

S & F in replacement MCCB four pole 250 Amp confirming to IEC 60947-2 & IS – 13947-3 thermal magnetic release and adjustable over load setting 0.8 – 1.0 x In and adjustable short circuit setting 6 – 10 x In and rupturing capacity 36 KA at 415 V AC , 50 Hz complete all as specified and directed.

S & F in replacement three phase digital softstarter with embedded bye-pass function for a wide range of applications complete with adjustable electronic overload and field bus communications, rated current 32 Amps suitable for 15 HP pump set, ATS 22 series Cat Part No. ATS22D32Q of Make Schneider or equivalent model of Makes listed in List of makes complete all as specified and directed.

S & F in replacement Power contactor, 3 Pole, Type ML-3 with 2NO+ 2NC auxiliary contacts confirming to IS/IEC 60947-4-1, coil voltage 415 volts Cat Part No. SS 90721 of Make L & T or equivalent model of Makes listed in List of makes complete all as specified and directed.

Disconnecting carefully 15 HP three phase induction motor from pump, starter panel and foundation complete, lifting the motor from site of installation and taking the motor to repair workshop in vehicle, dismantling the unserviceable winding, cleaning the slots and rewinding with super enamelled copper winding wire with existing guage, turns and weight, insulating sleeves including varnishing and baking properly and reassembeling the motor after replacement of unserviceable parts/components, testing at workshop and transporting the same from workshop to site, re-installation and necessary testing and commissioning complete all as directed. Notes : (a) Cost of labour for replacement of new spares/component shall be deemed to be included in quoted rates. (b) New spare parts/components shall be measured and paid as Supply only under respective items of BOQ here-in-after. (c) Cost of cosumables like Oil/Grease/Lubricants shall be deemed to be included in quoted rates.

M & L for complete overhauling and servicing of 15 HP monoblock pump set including greasing of bearings, varnishing and baking of motor, preparation of old existing painted surface in position including removal of disintegrated and deteriorated paint by scrapping out with wire brush or iron scrubber, applying a coat of red oxide primer and one under coat, one finish coat of synthetic enamel paint with spray gun machine for smooth finish including writing SM/MES No, reassembeling the pump set after replacement of nuts and bolts, air release valve, replacement of gland packing of suitable size and replacement of unserviceable parts/components, re-installation and necessary testing and commissioning complete all as directed. Notes : (a) Cost of labour for replacement of new spares/component shall be deemed to be included in quoted rates. (b) New spare parts/components catered vide item here-in-below shall be measured and paid as Supply only under respective items of BOQ here-in-after. (c) Cost of cosumables like Oil/Grease/Lubricants shall be deemed to be included in quoted rates.

Supply only following spares/components of 15 HP monoblock pump set :-

Driving end bearing No 6309ZZC3 suitable for pump set

Non driving end bearing No 6209ZZC3 suitable for pump set

S & F in replacement synthetic insulating mat of size 1Mx2Mx2.5 mm thick, , dielectric strength 11 KV ISI marked bearing IS No. 15652:2006 (superseding IS 5424) suitable for electrical shock safety complete all as directed.

Supply only Hand gloves , dielectric strength 30 KV , ISI marked suitable for electrical shock safety complete all as directed.

Supply only High ankle gum boots, black colour, anti skid , ISI marked of size 7 to 9 as per requirement complete all as directed.

Supply only helmet with chargeable LED light , ISI marked complete all as directed.

S & F in replacement integral LED aviation light for overhead reservoir comprising of aluminium housing with polycarbonate enclosure complete incl testing complete all as directed. Model & Make Cat Part No. BGAV 302 LED of Make Bajaj or equivalent model of Makes listed in list of Makes.

M & L for earthing complete with Copper earth plate 60 cm X 60 cm X 3.15 mm thick buried vertically in ground to depth not less than 2.25 metres deep below ground level, with top edge of earth plate not less than 1.5 m below ground level, connected to copper earth strip of size 20mmx3mm by means of bolts, nuts, check nuts and washers of galvanized iron or steel besides welding at all joints as shown in drawing and including excavation and earth work, GI pipe light grade 40mm bore for protection of earth wire and connected to continous earth lead on pole/test point, supplying and laying charcoal dust common salt PCC 1:2:4 type B1, chamber and MS angle iron frame 40x40x3mm and RCC cover 40mm thick (1:2:4) type B1 using 20mm graded stone aggregate reinforced with 6mm dia round bars @ 75mm C/C both ways with MS handle 12mm dia, PGI funnel and wire mesh, 20mm dia GI pipe medium grade for watering all as shown in electrical plate No 3 on srl page No 497 of SSR Part I (2009) drawing and connection to earth test point including testing and including dismantling and taking out old earthing complete all as specified and directed. Note : (i) The cost of earth lead /strip and GI pipe for protection of earth lead/strip upto 7.5m is included in the quoted rate. (ii) The cost of excavation, earth work is included in the quoted rate.

M & L for Earth continuity conductor or main earthing lead of size 20 x 3 mm copper strip fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for loop earthing etc., as required complete all as specified and as directed

S& F in replacement Air circuit breaker , 4 pole 800 Amps , microprocessor based , breaking capacity 50 KA at 415 Volts AC, 50 Hz including testing complete all as specified and as directed Make: L&T - SR18G, Cat No 0000SL or equivalent from approved list of makes

M&L for glow sign board of size 20' x 4' x 1' including writing '[MILITARY ENGINEER SERVICES , GARRISON ENGINEER (I)(AIRFORCE) SHILLONG, PUMP HOUSE NO II , LAITKOR PEAK]' in capital letters with No of LED fittings as per direction , cutting and pasting ACP sheet blue colour as per letters and polycarbonate solid sheet of 1.5 mm thickness, PGI sheet of 0.8 mm thick and aluminium angles as per the size of the board, clamping, angle iron , welding and fabrication for fixing over the main entry of pump house etc., complete including taking down the old unserviceable glow sign board complete all as specified and as directed

S& F in replacement Rotational moulded polyethelene heavy duty water storage tanks of capacity 10000 litrs ( Cylidrical vertical with closed top ) hoisted and fixed in position complete all as specified and as directed

M& L for maintaining the installation area neat and clean by levelling with soil dumps , cutting bushes and grass around the installation and thrown out the same outside installation and AF station area complete all as directed. Note: All cutters digging and other tools required for cleaning / levelling shall be provided by the contractor

M& L for preparation of old existing paited surface in position including removal of disintegrated and deteriorated paint by scrapping out with wire brush or iron scrubber , applying two coats of synthetic enamel paint (red/ blue/ black) with brush for smooth finish including arrow head in direction of water all as directed by Engineer-in-charge.

M&L Plain Cement Concrete type B2 (1:2:4) using 40 mm stone aggregate as in Foundation of monoblock pump/centrifugal pump, Filling and Mass Concrete, complete all as specified and as directed.

Bhuiya Construction