SPL REPAIR RPLACEMENT TO THE CENTRAL AC PLANT AND GEN SET 125 KVA AT IIT BR HQ 16 CORPS AT NAGROTA UNDER GE NAGROTA

Amount

Dismantaling and taking out Unserviceable AC Plant three Units of Capacity 10 TR each Comprising Compressor, Motors, shell and tube type Condensors, condenser water circulation Pumps, piping with valves, water Tank, Ducting and Cooling Tower including PCC Foundation, cables, panels etc. complete System of Existing AC Plant installed at the location as directed by GE and Removing from site and Depositing to MES Store Yard of AGE E&M complete all as specified and as directed by Engr-in Charge.

Supply , installation, testing & commissioning variable refrigerant Volume/Flow type air- conditioning system suitable for Cooling/Heating by 100% inverter driven capacity control scroll compressors complete with indoor and outdoor units with individual controller and with fittings etc., as per quantity given below i/c full charging of R-410A refrigerant gas complete with duly powder coated Outdoor unit . The minimum EER of the ODUs shall be 3.75/4.40 @100/75% load respectively.To have a better after sales & service parts management the compressors used shall be of same OEM manufacturing the equipment.The system should be designed and capable to operate @52 deg c ambient.The ODU shall be fitted with condenser fans with multi step (more than 25 speeds) control DC motors to have a proper condensing temperatures over a wide ambient operating temperature range for Outdoor VRF/VRV Units 16 HP minimum capacity 12.8 TR 2 working+ 1 Stand by Total 48hp/38.4 TR. Makes:-Blue star/ voltas/ carrier/ Daikin/ Toshiba/ Mitshubhishi/ Hitachi

Supply, fixing, installation, testing & commissioning Horizontal, Floor standing AHU unit in double skin construction with 40mm thick PUF panels of at least 0.6mm thickness, SS insulated drain pan of 0.8mm thickness, complete with 20 micron washable filters with minimum 10,000 CFM with a SP of 50mm with 3 independent coil sections ARI Certified of 12.8 TR each with Supply air, Fresh air, return air dampers, Coil face independant dampers for each coil , IE3 efficiency motor, Belt drive, AMCA certified forward curve blower fitted with 3# AHU kits of same make as VRF unit with electronic expansion valves for refrigerant control and fixing at designated places on ground floor installation, processing and commissioning of AHU including fixing of cement concrete blocks 300 x 300x 300mm with VI pads complete all as specified and directed by engr-in-charge. Makes:-Blue star/ voltas/ carrier/ Daikin/ Toshiba/ Mitshubhishi/ Hitachi

S&F corded Remote for VRF Unit operation including AHU operation capable of controlling inside temperatures cooling/heating in the range of + 1 deg C . Makes:-Blue star/ voltas/ carrier/ Daikin/ Toshiba/ Mitshubhishi/ Hitachi

S&F Refnets (Y - Joints) complete all as specified. Makes:-Blue star/ voltas/ carrier/ Daikin/ Toshiba/ Mitshubhishi/ Hitachi

S&F Gas for topping with R-410 gas for all 3 refrigeration circuits.

S&F Refrigerant Copper Pipe Interconnecting refrigerant pipe work with (19 mm / 13 mm thick) closed cell elastomeric nitrile rubber tubular insulation between each set of indoor & outdoor units as per specifications, all piping inside the room shall be properly supported with GI threaded hanger,GI slotted tray/angle with PVC sleeving at the supports and outdoor piping on Cement Concrete Blocks of Size 300x300x300mm of following size:-

28.6 mm O.D (insulation : 13 mm)

19.1 mm O.D (insulation : 13 mm)

15.9 mm O.D. (insulation : 13 mm)

12.7 mm O.D. (insulation : 13 mm)

Supply and laying GI Perforated cable tray 16G in a suitable size with necessary hardware & rubber gasket & clamps for copper piping & cabling for exposed piping, cabling as reqd.

S&F Rigid PVC piping complete with fittings, supports as per specifications and duly insulated with 6mm thick closed cell nitrile rubber tube insulation properly supported on GI slotted angle after maintaining proper slope and u trap at every indoor unit of following sizes:-

32 mm dia

40 mm dia

Supply and Fabrication, installation testing and commissioning of site fabricated GSS sheet metal ducting complete with hangers, supports and neoprene gasket sealing as per the standard specification and approved drawings of given below sizes:-

24 gauge GI ducting

22 gauge GI ducting

S&F GI sheet Return air boxing in 20 gauge with 50mm insulation from inside between the AHU room and conditioned area.

Supply and Installation, testing and commissioning of canvas for outlet connection of the equipments.

Supply and Installation, testing & commissioning of extruded aluminum powder coated Return air grille/diffusers without dampers.

Supply and Installation, testing & commissioning of extruded aluminum powder coated supply/Return air grilles with alum dampers.

Supply and fixing of 12 mm thick acoustic lining within the supply air duct as per specification.

Supply and Fabrication, installation testing and commissioning of site of thermal insulation on ducts with 13 mm nitrile rubber as per the specifications.

Supply installation, commissioning and testing of LT Pannel Cubical type suitable for 415 Volts 3 Phase 4 wire ,50 HZ AC supply system floor mounted outdoor type factory fabricated IP-54 Protection duly powder coated inside and outside, outer shell made out of 3.15mm thick CRCA sheet and internal shell made out of 2mm thick CRCA sheet with front and back opening weather proof including suitable rating Alum bus bar for 3 Phase wire system and wiring and embedded in PCC 1:2:4 type B-1 foundation including MS section not less than 50X50X6 mm thick for fixing panel of required size in ground Complete consisting of MCBs 40 Amps 16 KA "C" Curve 03 Nos for ODUs unit.

S&F control cum transmission wiring of 2 core x 1.5 sqmm copper shielded in suitable PVC conduits between indoor and out door unit.

S&F power wiring of 4 core x 25 sqmm alum cable in suitable GI cable tray between outdoors and indoor panel.

S&F power wiring of 4 core x 6 sqmm copper cable in suitable supports between main electric panel and AHU motor and reheat heater bank.

S&F Mansoon reheat Electric strip heater bank of 9 KW capacity to be fitted in the Supply air Plenum with Thermal cuts, Reheat controls etc as per the requirement.

M/L for earthing complete with steel earth plate eletrode 60cm x 60cm x6mm thick buried dirctly in ground vertically (earth pit not less than 2.25 mtr below ground level) with top edge of plat not less than 1.5 mtr below ground level connected to GI strip 25x4mm by means of bolts. nuts,check nuts and washers etc including protection pipe 15mm dia up to 7.5m length , provision the earth lead to earth connection in ther main distribution box with lugs and GI nuts,bolts, earthing shall be done all as per shown electrical plate No 5 of SSR part 1 Including neccessary excavation in disintergratedand hard soil and 20mm dia GI pipe with funel for watering PCC earth chamber 100mm thick precast RCC cover with suitable precast RCC frame and earth test point and testing in presence of Engr -in -Charge.

S&F M.S channel duly primer and enamel painted Stands for Outdoor Units as per size of ODUs complete all as specified.

S&F Fresh air dampers in the AHU room for maintaining IOQ in the conditioned area.

Taking down of all Ceiling and ceilling Lights during ducting work and refixing of all Ceilling , any damge of ceilling will be replace by exiting ceilling size and collour complete all as specified and as directed by Engr-in-charge.

S&F LED Ceilling Back light panel light 36 W complete with powder coated CRCA body etc. complete with all accessories internally pre-wired and including connecting up with twin core twisted flexible copper conductor cable with suitable size.

DG SET 125 KVA Supply, install, commissioning & testing of diesel engine driven generating set complete with acoustic enclosure, antivibration pads with 75db noise level at 1 mtr distance from DG set and control system for 125 KVA output at NTP, AC 415 volts, 50 C/S, 3 phase 4 wire directly coupled complete with self starting system including accessories equipment control panel etc as detailed below:- (a) Alternator 125 KVA KW output at 0.80 PF AC 3 phase 4 wire 415 volts 50 C/S, self excited self regulated, screen protected drip proof type with two end sheild ball/Roller bearing with damper winding in each pole faces as per IS-4722 or BS 2613-1970 all as specified and directed (b) Diesel Engine :- Diesel engine of BHP not less than 156 BHP, water cooled and electric start suitable to drive above alternator independently, coupled directly through flexible coupling, multi cylinder , cold starting, 1500 RPM industrial type as per BS-649 or IS-1601 with governor suitable to regulate speed of DG set from No load to full load complete with fuel tank of cap as per manufactrer recommendations, fuel lines, exhaust pipe extended upto and outside building duly insulated with asbestos rope and with support and silencer muffles etc for continuous operation and standard accessories, sump, pre heaters, Fuel tank of capacity for 12 hours running of DG set with stop cock, drain plug and necessary fuel pipe, manufactured out of 2mm thick MS sheet, etc all as specified and directed.

(ix) DC operated relays as required for remote operation, fault indication and outo switching OFF in case of fault in DG set. Note :- (a) The AMF panel shall be integrated with respective LT distribution panel and all electrical connections done using copper bus bars PVC sleeved of appropriate rating but not less than as of LT panel. (b) The testing of DG set for continuouss 12 Hrs running shall be carried by officer detailed by accepting officer before issuing completion certificate to contractor. On load testing eqpt including diesel for continuous testing for 12 hours or above till full testing (satisfaction or directed by Engr-in-Charge) will be arranged by the contractor.

Earthing complete with galvanised mild steel earth plate electrode 60x60cmx6mmthick buried directly in ground preferably in vertical position (Earth pit not less than 2.25 mtr below ground level) with top edge of the earth plate not less than 1.5 mtr below normal ground level connected to galvanised iron strip of size 32x6mm by means of bolts, nuts, check nuts and washers of galvanised iron including PCC pit 1:2:4 type B-1 pre cast RCC cover slab of size 550x550x75mm with suitable built in handle made from 12mmdia MS round bar, excavation and earth work in any type of soil 20mm dia bore medium grade galvanised iron water tubing fixed with cast iron funnel and wire mesh at one end and 15mm bore light grade galvanised iron protection pipe for earth lead wire upto 5m length, charcol, common salt complete all as shown in electric plate No 5 of SSR 2009 Part I connected to equipment complete all as specified and testing on completion.

M&L Galvanized iron tube ‘light grade’ for protection of cable at road crossing for the 80 mm bore of pipe complete all as specified

Supply, laying, jointing and testing XLPE insulated PVC sheathed armoured under ground cable heavy duty with aluminium conductor LT 1100 V grade cross sectional area 95 Sqmm 3.5 core, complete all as specified and directed by Engineer-in-Charge Note:- Excavation, earth work, brick protection and sand cushioning will be measured and paid separately.

Supply, laying, jointing and testing XLPE insulated PVC sheathed armoured under ground cable heavy duty with aluminium conductor LT 1100 V grade cross sectional area 50 Sqmm 3.5 core, complete all as specified and directed by Engineer-in-Charge Note:- Excavation, earth work, brick protection and sand cushioning will be measured and paid separately.

S&F in replacement on load change over switch, 200 Amp capacity, 3 phase, 4 pole, 415 volts, 50Hz, side handle operated, with and including MS sheet metal enclosure having advance neutral complete all as specified and as directed.

Excavation in trenches, in any type of soil not exceeding 1.5 Mtr wide and not exceeding 1.5 Mtr in depth , laying of cable or pipes (where provided for protection of cable) etc and getting out trimming the sides, forming bottom surfaces to required level complete all as specified and all as directed.

M & L for sand cushioning with a layer of sand 80 mm thick before laying of cable and 150 mm thick after laying of cable in trenches complete all as specified and directed. Note:- Punned thickness of sand shall be measured.

Supply and laying brick covering with width equal to length of brick as the mechanical protection to cable with well burnt sub class 'B' bricks laid in trenches flat complete all as specified and directed.

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

Removing excavated material to a distance not exceeding 50 Mtrs and depositing where directed at a level not exceeding 1.5 Mtr above the starting point complete all as specified.