REPAIR MAINTENANCE OF WATER DISTRIBUTION LINES FOR ARBORICULTURE AND ALLIED WORKS OF WATER SUPPLY AT INA EZHIMALA

Amount

Excavating in trenches not exc 1.5 m wide and not exc 1.5 m in depth, for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sqm on plan and n exc 1.5 m in depth and getting out in soft/loose soil complete all as specified and directed by Engr-in-Charge.

All as per item No.1 above but getting out in hard/dense soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm complete all as specified and directed by Engr-in-Charge.

Removing excavated soil n exc 50m and depositing where directed at level n exc 1.5 m above the starting point complete all as specified and directed by Engr-in-Charge.

Demolition of cement concrete (unreinforced) of any description and in any position not otherwise specifically provided complete all as specified and as directed.

M&L for cement concrete in sub floors, sub-bases, floors and pavings of cement concrete of following types:- Location:- Payyanur sump & Golf course pump house.

a) Type D2, 1:4:8 (40mm graded agreggate) of 100 mm thickness (for sub base)

b) Type B1 1:2:4 (20mm graded agreggate) of 50 mm thickness (for top layer flooring)

M&L for scrapping the old paint by using wire brush, emery paper and preparation of the surface for painting the following pump set's /control panel with one coat of primer and two coats of synthetic enamel paint of suitable colour complete all as specified and directed at site for the following items:-

(a) 15 HP Pumpset

(b) 7.5 HP booster pumpset

(c) 1 HP booster pump set

(d) LT Panels

M&L for repair of induction motor of 15 HP pump set, disconnection of electric cable from the terminal box of motor, decoupling the motor from the pump, remove the motor from the foundation bed and taking out the motor and transporting to authorised work shop. Dismantling the motor and taking out the burnt copper winding /fibre strip/insulating materials and worn out ball bearing-2 set. Clean the stator slots by CTC solution and rewind on stator slots with super enamelled copper wire of existing gauge with insulating materials /fibre strip/varnishing and made terminal connection of fibre glass coated wire . Remetalling the shaft by lathe work and welding work for correct alignment for fixing of bearing, polishing of shaft. Replacement of ball bearing -2 set. Assembling the motor and painting with two coats of synthetic enamel paint over a coat of red oxide zinc chromate primer including removal of existing paint. Replacing the burnt out gland rope, studs, nuts, bolts, washers, rubber gasket, metal filling, turning/grinding and balancing the shaft etc complete all as directed by the Engr-in-charge.

M&L for repair of 7.5 HP self priming booster pump set (SP3A type-Kirloskar), disconnection of electric cable from the terminal box of motor, decoupling the motor from the pump, remove the motor from the foundation bed and taking out the motor and transporting to authorised work shop. Dismantling the motor and taking out the burnt copper winding /fibre strip/insulating materials and worn out ball bearing-2 set. Clean the stator slots by CTC solution and rewind on stator slots with super enamelled copper wire of existing gauge with insulating materials /fibre strip/varnishing and made terminal connection of fibre glass coated wire . Remetaling the shaft by lathe work and welding work for correct alignment for fixing of bearing, polishing of shaft. Replacement of ball bearing -2 set. Assembling the motor and painting with two coats of synthetic enamel paint over a coat of red oxide zinc chromate primer including removal of existing paint. Replacing the burnt out gland rope,studs,nuts,bolts,washers rubber gasket,metal filling, turning/grinding and balancing the shaft etc and overhauling of SP3A type (Kirloskar make) suitable capacity pump complete all as directed by the Engr-in-charge.

M&L for repair of 1 HP self priming booster pump set (SP3A type-Kirloskar), disconnection of electric cable from the terminal box of motor, decoupling the motor from the pump, remove the motor from the foundation bed and taking out the motor and transporting to authorised work shop. Dismantling the motor and taking out the burnt copper winding /fibre strip/insulating materials and worn out ball bearing-2 set. Clean the stator slots by CTC solution and rewind on stator slots with super enamelled copper wire of existing gauge with insulating materials /fibre strip/varnishing and made terminal connection of fibre glass coated wire . Remetaling the shaft by lathe work and welding work for correct alignment for fixing of bearing, polishing of shaft. Replacement of ball bearing -2 set. Assembling the motor and painting with two coats of synthetic enamel paint over a coat of red oxide zinc chromate primer including removal of existing paint. Replacing the burnt out gland rope,studs,nuts,bolts,washers rubber gasket,metal filling, turning/ grinding and balancing the shaft etc and overhauling of SP3A type pump of suitable capacity complete all as directed by the Engr-in-charge.

M&L for disconnecting the electrical connection, lifting/reerection the submersible pump set from open well/bore well of capacity 7.5 HP capacity and dismantling the pump set and rewinding the submersible motor with copper sleeves wire of suitable gauge, proper insulation and replacement of PVC impeller for pump, connecting, testing, lowering the same, testing and commissioning complete all as specified and directed by Engineer-in-Charge.

M&L for repair/rewinding of electric motor 30 HP Make: Grundfoss, Type: CR45-4 B-F-A-E-HQQE (a) Disconnecting the electrical cable from the terminal box of motor and decoupling the motor from the pump, remove the motor from foundation bed and lifting the motor using chain pulley block and transporting to authorised work shop. (b) Dismantling the motor and taking out the burnt copper winding /fibre strip/insulating materials. (c) Clean the stator slots by CTC solution and rewind on stator slots with dual coat super enamelled copper wire of existing gauge with insulating materials/fibre strip/varnishing and made terminal connection using existing gauge fibre glass coated wire. (d) Assembling the motor as directed by the Engr-in-charge. (e) Transporting the motor to the site, refixing on foundation channel with new bolts and nut washer and spring washer, coupling the pump and motor with correct alignment, apply grease and connecting electrical connections in motor terminal box testing complete all as directed and specified by the Engr-in-charge.

M&L for repair/replacement of DE & NDE roller bearing of 30 HP Pump set's induction motor. Vertically mounted motor Make : Grundfos Type: CR45-4 B-F-A-E-HQQE (a) Removing the motor from foundation bed and lifting the motor using chain pulley. (b) Removing the unserviceable DE roller bearing and NDE using bearing pullar. (c) Dismantling the old bearing from rotor shaft and pressing new bearing. (d) Transporting the motor to the site, refixing on fountation channel with new bolts and nuts,coupling the pump and motor with correct aligment, apply grease and connecting electrical connection complete all as specified and as directed.

M&L for decoupling the pump, motor and transport the pump to workshop. Dismantle the split case centrifugal pump to replace the unserviceable bearing 2 set ,gland set replacement work of double suction brass impeller and lathe work on new stainless steel shaft along with replacement brass collar ring, gland sealing stainless steel sleeve for each side of pump shaft, coupling set, gland flange etc. Assembling the pump, coupling the pump and motor with correct alignment and testing complete for the 30HP pumpset complete all as specified and as directed by the Engineer-in charge. Make:- Grundfoss, Type: CR45-4 B-F-A-E-HQQE.

Supply and fix in transformer input voltage: 415v AC Output voltage: 230V AC, 500 VA Capacity, 50Hz 3 phase complete all as specified and as directed.

S&F in repair MCCB,,415V,100 A,4pole,25 KA Type DY125U fixed thermal and magnetic setting complete all as specified and as directed.

S&F in repair MCB,415V,40-63A,TP,25 kA complete all as specified and as directed.

S&F in repair MCB,415V,6-32 A, 2 pole,25kA complete all as specified and as directed.

M&L for servicing of PLC panel by replacement of minor electronic parts like relays, MCBs, contactors etc and making re-wiring of damaged control wiring for all circuits, VFD drive complete all as specified and directed by Engr-in-Charge. Note for item No.19 & 20:- The contractor has to execute the repairs/re-wiring and connections as directed by Engr-in-Charge. The contractor shall visit the site before offering his rate for better understanding of wiring/alterations to be done.

S&F in replacement of old u/s flat submersible 3 core copper conductor PVC insulated and PVC sheathed cable of size 6 Sqmm including taking down old unserviceable material complete all as specified and directed by Engineer-in-Charge.

S&F in replacement of old u/s flat submersible 3 core copper conductor PVC insulated and PVC sheathed cable of size 16 Sqmm including taking down old unserviceable material complete all as specified and directed by Engineer-in-Charge.

S&F in replacement of old u/s FASD (Fully automatic star delta starter), in sheet enclosure type MK1, 415 Volts relay range 13-22 Amps complete all as specified and directed by Engineer-in-Charge.

S&F in replacement of old u/s DOL starter (Direct on line) 3 phase 415 Volts 50 Hz relay range 13-22 Amps, TYPE: MK1 including taking down old material complete all as specified and directed by Engineer-in-Charge.

S&F in replacement of old u/s submersible pump controller in sheet enclosure type MU-G motor rating AC-3 duty, 415 volt 50 Hz, 3 phase relay range 13-22 Amps for submersible motor complete all as specified and directed by Engineer-in-Charge. Make:- L&T (MUG10 DOL) or equivalent in Havells/C&S.

S&F in replacement of old u/s pump controller in sheet enclosure type MU-G motor rating AC-3 duty ,415 volt 50 Hz, 3 phase relay range 30-50 Amps for submersible motor complete all as specified and directed by Engineer-in-Charge. Make : L&T (MU-G30 FASD) or equivalent in Havells/C&S.

S&F in replacement of old u/s DOL starter (Direct on line) 1 phase 230 Volts 50 Hz relay range 06 to 10 Amps, TYPE: MU2P including taking down old material complete all as specified and directed by Engineer-in-Charge.

M&L for checking existing 110/90mm UPVC pipe by taking out from trenches, cutting pipe for every 10 mtr and testing of water pressure, replacement of pipe if any blockage and rejointing the old pipe if no blockage observed using suitable coupling/ bends/ fittings complete all as specified and directed by Engineer-in-Charge. Notes:- 1. The earthwork and excavation will be measured and paid seperately under relative items of BOQ. 2. The rate quoted are deemed to be inclusive of cost of rejointing pipe using fittings required. 3. If any blockage observed, the replacement of pipe will be measured under relevant items of BOQ.

Supply & laying CPVC pipe 80mm (Sch-80) with necessary fittings to fix on butterfly vlaves/electric motor and connection to existing UPVC 110mm pipe all as per required on site including taking down old unserviceable/rusted/leaked GI pipe complete all as specified and directed by Engr-in-Charge.

Supply & laying CPVC pipe 40mm (SDR-11) with necessary fittings to fix on butterfly vlaves/electric motor all as per required on site including taking down old unserviceable/rusted/leaked GI pipe complete all as specified and directed by Engr-in-Charge.

Supply & fix in replacement of old unserviceable UPVC pipes, unplasticised PVC pipes of pressure rating 10 kg/cm2 laid in trenches complete all as specified and directed by Engineer-in-Charge for the following:-

(a) 50mm dia

(b) 90 mm dia

(c) 110 mm dia

S&F in repairs non return valve of 80 mm with suitable flanges to be fitted on CPVC pipe of suitable size complete all as specified and directed by Engr-in-Charge.

S&F in repairs non return valve of 100 mm with suitable flanges to be fitted on UPVC pipe of suitable size complete all as specified and directed by Engr-in-Charge.

S&F in repairs UPVC ball valve 100mm suitable to fit on 110 mm UPVC pipes complete all as specified and as directed.

S&F in repairs UPVC ball valve 80mm suitable to fit on 90mm UPVC pipes complete all as specified and as directed.

S&F in repairs UPVC ball valve 50mm suitable to fit on PVC pipes complete all as specified and as directed.

S&F in repairs PVC ball valve 25mm suitable to fit on PVC pipes complete all as specified and as directed.

Supply and fix in repair/replacement of centric butterfly valves wafer type PN1.6 as per BS-5155 & IS-13095 lever operated body grey cast iron disc -SGI epoxy coated disc seal-Nitrile/Epdm in gear operated of size 80 mm bore, with all fittings suitable to fit on CPVC pipe of suitable size confirming to IS specification complete all as specified and as directed.

S&F in replacement of old u/s electronic type single phase preventer 415 V ,50 Hz including taking down old material complete all as specified and directed by Engineer-in-Charge.

S&F in replacement of old u/s LED indication lamp of panel mounting type including taking down old material complete all as specified and directed by Engineer-in-Charge.

S&F in replacement of old U/s digital 3 phase voltmeter/ammeter (Accuracy Class 1) in existing LT panels complete all as specified and directed by Engr-in-Charge.

S&F in replacement of old U/s digital 3 phase multifunction meter (accuracy class 1) to indicate V,I,PF,energy,etc in existing LT panels complete all as specified and directed by Engr-in-Charge.

Supply and fix in repairs PVC medium duty suction hose pipe in any length laid in trenches including all fittings and connectors complete all as specified and directed by Engr-in-charge of following sizes:-

(a) 25mm dia

(b) 50mm dia

(c) 75mm dia

SANDR

PADMANABHAN. K.V

M/s K V Ramachandran

K A ALIYAR

GMS Builders

KDR CONSTRUCTION