SPECIAL REPAIR/ REPLACEMENT OF BER CENTRAL AC PLANT AT NATS (NIAT) AND EWT TRAINER SCHOOL NAVAL BASE KOCHI

Amount

Supply, install, testing and commissioning of 3X15 TR (for NATS(NIAT) area) , factory-assembled water cooled Scroll condensing unit, with microprocessor based control panel with all safety devices, Hermetically sealed scroll compressors, Shell and Tube Condenser, all safety devices, suitable for operation on R-410A or R-407C refrigerants, s per OEM recommendation complete and required foundation for pumpset complete all as recommended by OEM a and as directed by Engr-in-Charge.Make: Carrier/ Bluestar/ Daikin. Note:- (i)The AC plant and other accessories shall be commissioned by OEM. (ii)The contractor shall submit a certificate from the OEM confirming that the entire AC plant work shall be got installed through them/ their accredited agencies duly incorporating thier recommended make. For this the contractor shall obtain the certificate for this from the OEM branch office located in Kochi. (iii) The AC plant and AHUs will be housed in the existing plant room at NATS(NIAT) area. (iv)The tenderer should visit the site and check the site conditions before quoting the tender so as to incorporate any changes needed to install the plant in the location and rate quoted shall be included in the quote. Taking down and refixing of light fitting any type, ceiling fan and projector are included in unit rate quoted.S & F Life safety MS Modular fire extringuisher (Red) 5 Kg included in tjhe unit rate.

Supply, install, testing and commissioning of 1X45 TR (for EWT Trainer school), factory-assembled water cooled Scroll condensing unit, with microprocessor based control panel with all safety devices, Hermetically sealed scroll compressors, Shell and Tube Condenser, all safety devices, suitable for operation on R-410A or R-407C refrigerants, s per OEM recommendation complete and required foundation for pumpset complete all as recommended by OEM a and as directed by Engr-in-Charge.Make: Carrier/ Bluestar/ Daikin. Note:- (i)The AC plant and other accessories shall be commissioned by OEM. (ii)The contractor shall submit a certificate from the OEM confirming that the entire AC plant work shall be got installed through them/ their accredited agencies duly incorporating thier recommended make. For this the contractor shall obtain the certificate for this from the OEM branch office located in Kochi. (iii) The AC plant and AHUs will be housed in the existing plant room at EWT trainer school. (iv)The tenderer should visit the site and check the site conditions before quoting the tender so as to incorporate any changes needed to install the plant in the location and rate quoted shall be included in the quote. Removing and refixing of light fitting any type size, ceiling fan and projector included in the quote rate.

Supply and installation of refrigerant piping using appropriately sized 18 SWG grade hard-drawn copper pipes and fittings, including insulation of the suction pipe with 19 mm thick nitrile rubber tubular foam, and painting the liquid pipe with approved colour enamel paint, as per the manufacturer’s instructions, specifications, and directions.

Supply, installation, testing, and commissioning of indoor floor-mounted Air Handling Unit, fabricated from outer skin with 0.63mm thick precoated GSS sheet and plain 0.63 mm thick GSS inner sheet with 40mm thick injected PUF insulation with an aluminum extruded framework (a) Pre-filters having efficiency 90% down to 20 microns in GSS/ Aluminium frame and Bag filters having efficiency 90% down to 3 microns in GSS/ Aluminium frame (b) 6/8 row deep DX type intertwined coil section with aluminum fin and copper tube, suitable brass distributor and copper header, and SS-304 sheet fabricated nitrile rubber insulated drain pan. (c) Fan section with VFD compatible Plugtype/Belt driven Blower and 3 Phase motor. (d) Aluminum volume control dampers on Supply air mouth. (e) Marine light and safety interlocks all as specified and as directed to be installed to achieve the room condition 23 ± 2 degrees Celsius. Make : As per OEM recommendation

Supply and installation of Thermostatic expanssion valve and drier suitable for 15 TR capacity ac plant with necessary fittings all as per standard and as directed. Make : As per OEM recommendation

Supply, install, test, and commissioning of FRP-induced draft cooling tower with spray section, honey comb fills, basin, Fan with motor, intake bird screen type cooling tower of capacity 50 TR with suitable foundation As per OEM recommendation and float valve of suitable sizes and quick fill complete all as specified and as directed. (Each NIAT & EWT Training school) Make : As per OEM recommendation

Supply, Install, testing and commissioning of Nonchemical type on-line scale preventor on line electrostatic non chemical water treatment system with electrically operated control panel to be fixed on main header suittable for AC Plant 45 TR. The outer casing shall be of 304 grade stgainless steel with both ends flanged and capable preventing scale formation. The same shall be suitable for water flow rate 1368 LPM complete all as specified and as directed..Make : As per OEM recommendation

Supply, install, testing, and commissioning monoblock/Split case centrifugal water pumping sets for condenser water circulation (1W+1S) having flow rate of 10.6 LPS and delivery head of 36 m along with 3 phase, 50 cycles, 410 volts, AC motor, CI body and impeller, SS shaft, mechanical seal and suitable foundation with neoprene rubber anti-vibration ribbed pads complete all as specified and as directed. Make : As per OEM recommendation

Supply, Install, testing and commissioning of Duct/Plenum Mount type Heater bank 12 KW capacity (4KWX3 Nos) (Each for NIAT & EWT training school) with necessary control panel including safety thermostat, digital humidistate, Aerostate and required power and control wiring all as specified and as directed. Make : As per OEM recommendation

Supply and installation of medium grade GI pipes for condenser water piping, cut to the required length and installed with welded joints including all necessary fittings such as elbows, tees, bends, short pieces, etc., and conforming to the specifications and painting with one coat of red oxide primer and two coats of synthetic enamel paint complete including providing necessary supports, complete all as specified and directed. The pipes shall be of the following sizes:-

100 mm dia

80 mm dia

65 mm dia

50 mm dia

32 mm dia

Supply and fixing of Butterfly valves, PN16 complete with companion flanges, nuts, bolts, washers and gaskets etc., conforming to relevant IS, complete all as specified and directed of the following sizes:-

100 mm dia

80 mm dia

65 mm dia

50 mm dia

Supply and fixing of NRV with companion flanges, nuts, bolts, washers and gaskets etc.all as specified and directed of the following sizes:- (a) 65 mm dia

Supply and fixing of Y Strainer with companion flanges, nuts, bolts, washers and gaskets etc.all as specified and directed of the following sizes:- (a) 100 mm dia

Supply and fixing of semi automatic Balancing valve with companion flanges, test cocks, nuts, bolts, washers gaskets, etc.all as specified and directed of the following sizes:- (a) 50 mm dia

Supply and fixing of 'Rubber Bellow with companion flanges, nuts, bolts, washers and gaskets etc.all as specified and directed of the following sizes:-

80 mm dia

65 mm dia

Supply and fix dial type temperature gauge with thermowell all as specified and directed.

Supply and fix pressure gauge with syphon valve all as specified and directed.

Supply and fixing PURGE/ DRAIN Valves made of brass 25 mm dia complete all as specified and directed.

Supply and fixing auto air vent with ballvalve made of brass 12mm dia complete all as specified and directed.

Supply and fixing of two layered HDPE water tank 1000 ltrs capacity for cooling tower make up complete all as specified and directed.

Supply and laying of CPVC pipe of 32 mm dia with all fittings, valves and supports for providing drain for AHU, and cooling tower makeup complete all as specified and directed.

Supply, install, testing and commissioning of factory/hand made air distribution system comprising of supply and return air ducts for air conditioning of building including spliters, vanes, interconnectors as required from AHU to the conditioned space comprising of calss VIII galvanised sheet ( nominal galvanization of 120 gm / sqm surface area ) with suitable supporting arrangements and bracing complete for the following sizes all as specified and as directed.

20 Gauge

22 Gauge

24 Gauge

Supply and fixing Acoustic insulation for supply air duct using 10mm thick Class 1 rating Open Cell nitrile rubber with density of 140 - 180 kg / m³. VOC level should not exceed more than 50 grms / Litre of open cell structures 10mm thickness ; complete all as specified and directed. Make : As per OEM recommendation

Supply and installation of thermal insulation for air ducts using 38 mm (25+13) thick class "O" closed-cell nitrile rubber-based elastomeric insulation with OEM-approved adhesive with low VOC level. The insulation should be manufactured according to ASTM E 84 test standards and meet NFPA 90A supplementary materials requirements for air distribution systems. It should absorb no more than 0.2% water by volume (ASTM C 209), not support microbial growth (ASTM C1071, G21, G22), emit no objectionable odors (ASTM C 665), and have a thermal conductivity of 0.27 (R - 2.78 in 3.4" thickness) and water vapor permeance of 0.10. Joints should be sealed with 50mm wide 3mm thick self-adhesive tape, all as specified and directed. Make : As per OEM recommendation

Supply and fixing of vapor barrier for air ducts by applying Fevicol's nonflammable, low VOC, anti-fungal, water-based lag coating (FEVICOL AC DUCT KING LAG COATING AF5590) uniformly on the duct surface using a brush or spreader. This will be followed by wrapping the duct tightly with a 7 mils thick canvas or glass fiber cloth, ensuring overlapping to avoid air gaps. The coated duct will then be allowed to dry before applying an additional coating using the same method. All work will be carried out as per standard procedures and as directed.

Supply and fixing Volume Control Dampers - (16G) Volume made out of 100 x 40 x 1.55mm thick galavanised steel frame and blades of 1.55mm galavanised sheet steel ; complete all as specified and directed.

Supply and fixing machine made GI fire damper alongwith fusible link 14 gauge complete all as specified and directed..

Supply and installation of powder-coated, extruded aluminum diffusers/grilles with GI collar dampers for supply air, including necessary supports, all as specified and directed.

Supply and installation of powder-coated, extruded aluminum diffusers/grilles without GI collar dampers for return air, including necessary supports, all as specified and directed.

Supply and fixing of fire retardant flexible canvas for AHU supply air mouth complete all as specified and directed.

Supply and fixing of powder coated Aluminium fresh air louver with bird screen complete all as specified and directed.

Supply and install, testing and commissioning of MCC with weather proof (IP-55) indoor type, LT electric panel consisting of a separate compartment for each outgoing feeder with a locking arrangement for each feeder fabricated out of 2mm thick CRCA powder coated floor mounting type with suitable size of base frame/channel and legs made of suitable angle iron with powder coated (7 tank process) after precoated primer including necessary PCC (1:3:6) type C2 foundation of panel board including earthwork and comprising the following for running the AC Plant, complete all as specified and directed :- (a) Bus bar chamber of 3 phase and neutral 4 strips 415 volts with 300 Amps copper strip - 1 set (b) Moulded Case Circuit Breaker 4 pole 35 KA breaking capacity (Icu) 250 Amps rating with adjustable overload (70% to 100%) - 1 No (In coming) (c) Moulded Case Circuit Breaker 3 pole 16 KA breaking capacity(Icu) 80 Amps capacity rating with adjustable overload (70% to 100%) - 3 Nos for Condensing Units (d) 63Amps TPN MCB with 11 KW VFD and S/D Bypass starter with control wiring - 1 Nos for AHU. (e) 32 Amps TPN MCB with 2.2 KW DOL Starter and control wiring - 1 Nos for CT Fan. (f) 63 Amps TPN MCB with 5.5 KW S/D Starter and control wiring - 2 Nos for CND Pump. (02W+01 SB) (g) 10 Amps SPN MCB with control wiring - 1 Nos for Scale Preventer. (h) 63 Amps TPN MCB - 1 Nos for Heater Bank. (i) Digital MFM, OLR, SPPR, Complete internal wiring with suitable copper conductor - 1 Lot. (j) Provision of extra space for one more outgoing feeder suitable for MPCB / MCCB. (k) LED Indicator lamp Red, Yellow, Blue - 01 Set MAKE OF PANEL:- CPRI APPROVED.

Supply and install, testing and commissioning of MCC with weather proof (IP-55) indoor type, LT electric panel consisting of a separate compartment for each outgoing feeder with a locking arrangement for each feeder fabricated out of 2mm thick CRCA powder coated floor mounting type with suitable size of base frame/channel and legs made of suitable angle iron with powder coated (7 tank process) after precoated primer including necessary PCC (1:3:6) type C2 foundation of panel board including earthwork and comprising the following for running the AC Plant, complete all as specified and directed:- (a) Bus bar chamber of 3 phase and neutral 4 strips 415 volts with 250 Amps copper strip - 1 set (b) Moulded Case Circuit Breaker 4 pole 35 KA breaking capacity (Icu) 200 Amps rating with adjustable overload (70% to 100%) - 1 No (In coming) (c) Moulded Case Circuit Breaker 3 pole 16 KA breaking capacity(Icu) 125 Amps capacity rating with adjustable overload (70% to 100%) - 1 Nos for Condensing Units (d) 63Amps TPN MCB with 11 KW VFD and S/D Bypass starter with control wiring - 1 Nos for AHU. (e) 32 Amps TPN MCB with 2.2 KW DOL Starter and control wiring - 1 Nos for CT Fan. (f) 63 Amps TPN MCB with 5.5 KW S/D Starter and control wiring - 2 Nos for CND Pump. (g) 10 Amps SPN MCB with control wiring - 1 Nos for Scale Preventer. (h) 63 Amps TPN MCB - 1 Nos for Heater Bank. (i) Digital MFM, OLR, SPPR, Complete internal wiring with suitable copper conductor - 1 Lot. (j) Provision of extra space for one more outgoing feeder suitable for MPCB / MCCB. (k) LED Indicator lamp Red, Yellow, Blue - 01 Set MAKE OF PANEL:- CPRI APPROVED.

Supply, laying, jointing, testing and commissioning 1100Volts grade heavy duty XLPE insualted LT under ground cable, PVC sheathed, as per IS-7098 (Part-I, 1988) galvanised steel strip armoured heavy duty multi stranded conductor laid in trenches / passed through pipe / duct wall with clamps made out of mild steel flat iron including fixing accessories like brass cable glands double compression type, lugs, nuts, bolts, washers etc., of following sizes complete all as specified and as directed.

70.0 sqmm aluminium cable 4 core

95 .0 sqmm aluminium cable 4 core

16.0 sq.mm copper armoured cable 4 core

6.0 sq.mm copper armoured cable 4 core

4.0 sq.mm copper armoured cable 4 core

2.5 sq.mm copper armoured cable 4 core

1.5 sq.mm copper armoured cable 4 core

1.5 sq. mm shielded copper armored cable 4 core

Supply and Instalation of ladder type cable trays for laying cables with weldless construction, factory assembled bolted rung type, Pre- galvanized GI as per IS 2629, made out of Hot Rolled steel sheets of 1.6 mm thickness. Including cable support system. The rate shall include bends, angles, Tees, supports and all accessories complete Supports Shall be provided at every 1200mm with hi-tech threaded rods & anchor fasteners all as per standards and as specified and directed.

Supply and fix the water flow switch all as specified and directed.

Earthing complete with GI earth plate electrode 600mm x 600mm x 6 mm thick buried directly in ground vertically to a depth of not less than 2.25m deep below ground level with the top edge of earth plate at a depth of not less than 1.5m below ground level earth plate shall be connected to & including the galvanized iron strip of 32x6 mm, GI earth strip shall be protected by 40mm dia GI pipe 'medium grade', watering pipe 20mm dia GI pipe 'light grade', GI wire meshed funnel, alternate layer of charcoal and salt on all side to earth plate upto a thickness of 150mm, filling of black cotton soil in earth pit upto GL, and connected to earth plate including necessary excavation & earthwork, PCC (1:3:6) type C-1 earth chamber, 50mm thick RCC cover (1:2:4) type B1 mix with 8mm dia nominal reinforcement @ 100mm c/c both ways etc complete all as shown in electrical plate No. 3 of SSR Part - I (2009) connected to earthing test point, including testing on completion complete all as speciified and as directed.

Galvanised Iron Earth continuity conductor of size 32 x 6 mm fixed to wall /or buried in ground or fixed to poles or any other indicated position with suitable size of clamps, nuts and bolts for loop earthing etc., complete all as specified and directed.

Supply and installation of supports for piping and equipment using MS angles, channels, plates, bolts, nuts, and washers. The charges include necessary painting with one coat of primer and two coats of enamel paint complete all as specified and directed.

Dismantling and taking down of existing old unserviceable central type AC plant of capacity 2x17.5 TR and 2x20 TR including all connected accessories such as compressor, AHU units, Ducts, Valves, pump sets along with pipelines, condensers & LT panel boards with cables including necessary T &P, scaffolding, and making good disturbed portions for matching with existing and depositing the plant and accessories to MES Store Yard complete all as specified and directed.

Taking down any type of false ceiling for AC duct complete all as specified and as directed

S & F Gypsum board 600 mm x 600 mm x 8 mm thick in ceiling with screw as per manufacturers instruction complete all as specified and as directed.

S & F Anodised aluminium snap grid frame work for false ceiling all as specified size of grid 605 x 605 mm including hanging with mild steel 2 mm dia wire in suitable length complete all as specified and as directed.

Dismantling of tiling any type any size complete all as specified and as directed as per site requirement for fixing of new plant only

M & L for 25 mm thick PCC 1:2:4 type B-0 (using 12.5 mm graded stone aggregates) as in flooring including finishimng cemen t concrete rough without using extra cement, complete all as specified and as directed by Engineer-in-chaarge.

M & L for Machine cut kota stone slab flooring 20-25 mm thick, screed bed or beeding layer of 20 mm thick cemen t morter 1:6 laid and jointed with gray cement slurry mixed with pigment to match the shade of the slab including rubbing and polishing etc complete all as specified and as directed.

M & L for Machine cut kota stone slab in riser of steps, skirting, dado and pillar laid over cement screed and jointed, backing coat layer of 20 mm thick cement mortar 1:6 laid and jointed with gray cement slurry mixed with pigment to match the shade of the slab including rubbing and polishing etc complete all as specified and as directed.

M & L for preparing surfaces plastered or unplastered by washing, brooming down or wire brushing and applying one coat of acrylic washable distamper on old decorated surfaces on walls including cornices etc complete all as specified and directed

sapana enterprises (BID ID -3483188)

M/s Mukesh Engineers (BID ID -3482969)

Glacier Cooling Solutions Private Limited (BID ID -3483283)