SPECIAL REPAIRS FOR REPLACEMENT OF CENTRAL TYPE AC PLANT OF EDP SCHOOL AGAINST BER AND PROVISION OF 62.5 KVA DG SET FOR STANDBY ELECTRIC SUPPLY AT INS HAMLA UNDER GE NW BHANDUP

Amount

Dismantling of existing unserviceable central AC Plant with compressor, condenser motor including pipes and cooling tower ,Cables including ducts complete all as specified and directed.

Supplying Installing testing and comissioning of chilled water type central AC Plant of capacity 3 x 26 TR ( 2x26 = 52TR 100 % Working and 1x26 = 26TR standby ) with all equipments and accessories complete and comprising the following. Make : Blue Star / Voltas / Carrier i) Three Nos water coolede chiller unit factory assembled microprocessor controlled each 50 % of full load capacity complete of and comprising following (Make: Bluestar- Model No. XWC2S-026AR2, Carrier, Daikin, Voltas) ii) Three Nos scroll compressor hermatically sealed units using R-407C refrigerant gas with suction discharge shut off valves, automatic capacity control with thermostat and solenoid valves built in suction strainer, oil pump, hot gas muffler, heat wheel, oil pressure, safety switch etc all as specified. iii) Microprocessor based soft start panel with safety and operating controls, indicating lamps along with automatic operation and system protection. The safety devices consisting of condenser high pressure outlet switch, eveproator low pressure cut out switch lube oil low pressure cut out switch, digital display consisting of oil pressure condensing pressure eveproating pressure and lube oil thermo meter, indicating lights and lamps two include lubricating oil heater lamp, the system run condenser high pressure, motor overload, heater lamp and operating hours meter etc.. iv) Three Nos shell and tube type water cooled condenser MS shell integrally finned copper tubes complete with safety valve drain valve, connection of water inlet and outlet, connection of hot gas inlet and liquid outlet, with valves, thermometer and purge valve all as specified. v) Three Nos shell and tube type DX chiller with thermal insulation including refrigerant inlet and outlet connection with isolating valves, expansion valves water inlet and outlet valves, temperature and pressure gauges at water inlet and outlet, drain and vent stop valves complete all as specified. vi) Three Nos stands fabricated out of MS channel / angle of suitable size for mounting compressor, motor, condenser and chiller. vii) Three set of nitro neoprene rubber antivibration ribbed pad with MS channel in foundation etc complete. viii) Necessary MS heavy duty refrigerant pipe for suction and discharge lines and copper pipe for liquid line complete with fitting valves etc. ix) First change of R407C refrigerant gas and compressor oil for complete plant.

Twin cell FRP induced draft rectangular type counter flow cooling tower of capcity 60 TR(240 USGPM) supported over hot dip galvanised steel structure, fitted with axial flow fan direct driven, PVC/Polypropylene fills/ Nozzels with maximum allowable temperature 50 degree centigrade, drift losses 0.005% of water circulation with suitable foundation and float valve suitable size complete all as specified. Make: Mihir/Pharapur/Advance

PVC three layered, closed lid cylindrical shapes ISI marked water tank of 5000 Ltrs capacity mounted on suitable stage as specified Make: Syntex

Monoblock centrifugal pump set of capacity 5 HP, 14.5 to 27.3 LPS, 12 to24 Mtr head for condenser cooling water circulation & suitable for three phase 50 cycle 450V AC supply and including suitable foundation neoprene rubber antivibration ribbed pads all as specified Make: crompton,Kirloskar Model KDI- 520+

Monoblock centrifugal pump set of capacity 5 HP, 6.4 to 14.3 LPS, 16 to 28 Mtr head for Chilled water circulation & suitable for three phase 50 cycle 450V AC supply and including suitable foundation neoprene rubber antivibration ribbed pads complete all as specified Make: Crompton,Kirloskar Model KDI-527++

Supply & fix MS pipe as per IS - 1239 for condenser water circulation of 100 mm dia complete all as specified and directed.

Ditto same as above item No 07 but for 80 mm dia complete all as specified and directed.

Ditto same as above item No 07 but for 50 mm dia complete all as specified and directed.

Supply & fix MS pipe'C' class conforming to IS-3589 for chilled water circulation with insulation complete fittings and supports of 80 mm dia complete all as specified and directed.

Supply & fix MS pipe'C' class conforming to IS-3589 for chilled water circulation with insulation complete fittings and supports of 50 mm dia complete all as specified and directed.

Supply & fix MS pipe'C' class conforming to IS-3589 for chilled water circulation with insulation complete fittings and supports of 65 mm dia complete all as specified and directed.

Supply & fix GI pipe medium grade conforming to IS- 1239 including all fittingsfor condenser water drain pipe of 25 mm dia complete all as specified and directed.

Supply & install PVC Chilled water make up tank 1000 Ltrs and thermally insulated with 50 mm thick EPS quality sheet of suitable size having density not less than 65 Kg/Cub Meter withj protecting cover of 25 gauges aluminum cladding and supporting pipe connections complete all as specified and directed.

Supply & Installation of Air Handling Unit capacity 15500 CFM at 50 mm TSP, sectionalised construction, factory made double skin floor mounted six row deep cooling coil complete all accessories controls etc and comprising the following. Make - Zeco/EDGETECH/Citizen i) Cooling coils of copper tube with aluminum fins. ii) Prefilter. iii)Blower for AHU with suitable motor, TEFC scroll case induction motor for operation of 415 volts 3 phase AC supply with V belt and guard. iv) Insulation of AHU as specified.

M & L for earthing complete with GI earth plate electrode of size 60cm x 60cm x 6mm thick burried directly in ground (earth pit not less than 2.25 m deep flow the ground level) with top edge of the plate not less than 1.5m below the normal ground level connected with GI strip 32 x 6 mm by means of bolts and nuts, check nuts and washers of galvanised iron steel including necessary excavation and earth work in any type of soil, removing the surfplus soil to a distance not exc 50, with and including PCC chamber in PCC (1:2:4) type B1, using (20 mm graded stone aggregate) having outer dimensions 60cm x 60cm x 60cm internal dimensions 30cm x 30cm x 30cm, MS angle iron frame made out of size 40x40x6mm thick duly painted with 2 core synthetic enamelled paint over one coat of red oxide zinc chrome primer hinged with including 10mm thick CI cover with handled, watering arrangement with funnel internally secured with wire mesh with 20 mm dia medium grade pipe for watering 40 mm dia light grade, GI pipe for lead protectin form electrode to test point, panel, accesorries in and including alternate layers of charcoal dust and common salt complete all as shown in electrical Plat No 3 and connected and indicated including testing on completion

M &L GI Sheet 1.00 mm thick (20 SWG) ISI marked for making duct/pleunum complete all as specified and directed.

M &L GI Sheet 0.80 mm thick (22 SWG) ISI marked for making duct complete all as specified and directed.

M &L for GI Sheet 0.63 mm thick (24 SWG) ISI marked for making duct complete all as specified and directed.

M &L for duct insulation,Cleaning the surface of the duct to be insulated, painting the surface of the duct with 2 core bituminous paint (Apply rubber based adhesive CPRX compound) by shalimar tar products, fixed tightly fibre glass wool with density 24 Kg/Cub Meter to the surface and sealed properly, cover with aluminum oil kraft paper laminated with minimum over load 50 mm, crass ribbed and all as specified.

Supply & fix retun air grill made of GI sheet 18 swg complete all as specified and directed.

M & L for Nitrile insulation layer for size 25 mm thickness sticking on the chiller surface by using approved adhesive and ceiling joint by weather proof tape.

M & L for air diffusers aluminum construction powder coated with damper complete all as specified and directed.

M & L for Three way control valves with return air thermostat with insulation. 80 mm dia complete all as specified and directed.

M & L for CI Butterfly valve 100 mm size complete all as specified and directed. Make - KARTAR / Castle

M & L for CI Butterfly valve 80 mm size complete all as specified and directed. Make - KARTAR / Castle

M & L for CI Butterfly valve 65 mm size complete all as specified and directed.

M & L for 'Y' Strainer CI 80 mm size complete all as specified and directed.

M & L for 'Y' Strainer CI 100 mm size complete all as specified and directed.

M & L for glob valve 50 mm size complete all as specified and directed.

M & L for Fire damper made out of GI sheet 16 G with fusible plug complete all as specified and directed.

M & L for Volume control damper made out of GI sheet 16 G complete all as specified and directed.

M & L for Pressure gauge 0-15 Kg per cm² complete all as specified and directed.

M & L for Temperature gauge complete all as specified and directed.

S&F NRV valve 100 mm dia complete all as specified and directed.

S&F NRV valve 65 mm dia complete all as specified and directed.

Supply and laying 4 core 10 Sqmm PVC insulated armoured & PVC sheathed with copper conductor heavy duty LT 1100 volts grade conforming to IS-1554 part-1 including & testing complete all as specified for chiller unit complete all as specified and directed.

All same as above item No 40 but 4 core 2.5 sqmm for AHU Blower motor complete all as specified and directed.

All same as above item No 40 but 3 core 2.5 sqmm for CT fan, Condenser motor, chiller motor complete all as specified and directed.

M & L for 25 x 3 mm GI Earthing strip complete all as specified and directed.

S&F for Strip Heater 2 KW complete all as specified and directed.

S&F balanceing valve 100 mm complete all as specified and directed.

Excavation in trenches n.exc 1.5 m wide and n. exc 1.5 m in depth and getting out in soft/loose soil for removing/laying of cables complete all as specified and as directed.

Returning, filling in including spreading , leveling , watering and well ramming in layers n.exc 25 cm with soil complete all as specified and as directed.

Removing excavated material to a distance n.exc 50 m and depositing where directed at a level n.exc 1.5 mtr above the starting point complete all as specified and as directed by Engineer-in-Charge.

Supply and laying HDPE pipes of pressure rating 6 Kg/Cm sq of size 40 mm bore laid in trenches complete all as specified and directed.

Supply and laying HDPE pipes of pressure rating 6 Kg/Cm sq of size 50 mm bore laid in trenches complete all as specified and directed.

Supply installation commissioning and testing silent diesel engine driven Generating Set 62.5 KVA (at 0.8 PF) capacity 415 Volts, 3 phase, 4 wire water cooled with & including acoustic weather proof enclosure, noise level shall not be exceeding 75 db at a distance of 1 metre from all sides and as per latest CPCB norms , complete in all respects & comprising the following components. Make : Kirloskar Oil Engine Ltd. Or equivalent of Ashok Leyland/Sudhir/Cummins/Greaves Power

(a) Diesel Engine shall be compact verticle six cylinder in-line, four stroke, water cooled, conforming to IS-1601 and equivalent BS as amended up to date, developing suitable BHP at 1500 RPM, inclusive of the following accessories :- (i) Radiator and Radiator fan (ii) Spyder coupling guard (iii) Fly wheel (iv) Fly wheel housing complete with starter gear ring and coupling as per manufacuterer design (v) Air cleaner dry type (vi) Fuel and lubricant oil filter (vii) By-pass filter (viii) Coolant inhibitor (ix) Fuel pump DRT type/in line mono block fuel injecting pump (x) Water pump (xi) Lub oil pump and inclusive of first filling of lubricant oil and coolant (xii) Electric starter as manufacturer's design (xiii) Battery charging generator (DC alternator) (xiv) Residential silencer (xv) Lubricant oil cooler (xvi) Flexible pipe of silencer (xvii) DC Volt meter (xviii) Water temperatures gauge lub oil pressure gauge. (xix) Speedo meter and Engine running hours meter (xx) Display for fault (xxi) Suitable size of turbo charger (xxii) Electronic Governor (xxiii) Maintenance free batteries fully charged, as per manufacturer design.

(b) Alternator of 62.5 KVA shall be designed for an output at 0.8 PF @ 1500 RPM, 415 Volts, 50 Hz, 3 phase system, brushless type screen protected revolving filled, self excited, self regulated and shall be capable for handle atleast 25% unbalanced loads across phases. The alternator shall have digital AVR.

Notes:- (i) The DG set duly assembled shall be procured by the contractor directly from OEM of Engine only. (ii) The drgs and specifictions of the DG set and its components shall be got approved by the contractor from the GE before procurement. (iii) The DG set shall be got inspected and tested in the factory by the rep nominated by the GE before delivery from the factory. The records of the testing shall be signed by the rep of GE, Contractor and rep of manufacturer. (iv) The DG set after installation shall also be got tested at site by the rep nominated by the Accepting Officer and the records of the testing shall be signed by the testing officer (rep of the Accepting Officer), GE, Engr-in-Charge and the Contractor. (v) All the arrangements, necessary FOL and testing equipments etc, for testing as per note (iii) & (iv) above shall be provided by the contractor and cost of the same shall be deemed to be included in the contractor's qoted rates. (vi) The DG set shall be installed all as per manufacturer instructions manual subject to final approval of GE. Cost for provision of PCC foundation, platform, 1:2:4 type B-2 foundation of suitable size other civil works, excavation and earth work, sand cushioning, grouting bolts etc as per manufacturer's instructions and as directed by the GE shall also be deemed to be included in the quoted rate of above item.

Supply and laying in repairs cable LT XLPE insulated and screened PVC bedded, galvanised steel strip armoured electric power cable (heavy duty) with stranded aluminium conductor, 1100 Volts grade complete all as specified and directed by Engineer in charge for the following sizes including taking down existing u/s LT cable.

(a) 120 Sqmm 3.5 Core.

(b) 70 Sqmm 3.5 Core.

(c) 35 Sqmm 3.5 Core.

(d) 16 sqmm 4 core

M&L for earthing with copper earth plate electrode 600 x 600 x 3.15 mm thick burried directly in ground vertically to a depth of not less than 2.25 mtr below ground level connected to copper strip of size 25x3 mm as earthing lead means of nut, bolts and washers made out of galvanised ireon mild steel and 40 mm dia GI pipe "light grade" for protection of earth lead and connected to Transformer Neutral/body or as directed by Engr -in-Charge including PCC Pit in Cement Concrete 1:3:6 (20mm Graded Stone Agg-regate) and RCC Cover of size 450X450X50mm in RCC 1:2:4 (20mm Graded Stone Aggregate) rein-forced with and including 8.0mm dia TMT Bars @ 100mm centre to centre both ways, Galvanised Iron Wire Mesh, Funnel, Galvanised Iron Watering Pipe 20mm Bore (dia) Medium Grade, necessary Excavation in Soft/ Loose Soil, returning, filling in and removal of surplus Spoil upto a distance of 50.00 METRE and all as shown in Electrical Plate No. 5 of MES Schedule Part-I and Testing on completion , complete all as specified and as directed.

somnath engineering corporation

BRITE INDUSTRIES