Replacement of existing water cooled chiller plants at ATS Complex, Mumbai.

Amount

SH-I : S.I.T.C. of chiller works

Supply, Installation, Testing and commissioning of microprocessor controlled water cooled screw chiller of 180 TR or above suitable for operation on 415 +/- 10% Volt 3 Phase, 50 cycles power supply controlled with Variable Frequency Drive(VFD) suitable starter including shell and tube type chiller, shell and tube type water cooled condenser, metic / semi hermetic screw compressors with refrigrant cooled motor, refrigerant- R134a or as per manufacurer recommendations.Oil and referigerant pumping system, control wiring complete with accessories and safety controls alongwith microprocessor control panel with open protocol for hook up with BMS as per specifications. The chiller package shall be assembled on a common fabricated out of steel frame to form compact unit.The Chiller to be installed on existing foundation by preparing addition RCC foundation pedestal of minimum 01 feet height and required length and width as per chiller size. Necessary modification/civil work in existing wall structure required for entry and exit of the chiller plant and making all good after the work is in the scope of agency and nothing extra will be paid on this account. The following are the design parameters : Chilled water Leaving Temp. : 6.7 degree C Chiller water Entering Temp. : 12.2 degree C Condenser water Leaving Temp. : 36.4 degree C Condenser water Entering Temp. : 32.2 degree C Chiller Fouling Factor : 0.0001 hr. sq.m.degree C difference / K.Cal Condenser FF : 0.0002 hr. sq.m.degree C difference / K.Cal Following parameters as per ARI 550/590-2013- Minimum IPLV : 6.17 Maxuimum IKW/TR : 0.65 Minimum COP at ARI Condition : 5.4 Minimum IPLV : 6.17 Maxuimum IKW/TR : 0.65 Minimum COP at ARI Condition : 5.4

Dismantling of existing Chiller / Condensor water piping connections along with cables, shifting of 2 nos. 120 TR Voltas make reciprocating type Chiller from Plant room to nearby store location or at suitable location as per direction of E-I-C.

Supplying, laying/ fixing, testing and commissioning of Chilled water piping of nominal size 150mm dia. (32mm thick nitrile rubber insulation) inside the building (with all accessories, clamp, MS support structure, tees, elbows, reducer, union, flanges, rubber gaskets, vibration isolators, MS nuts bolts, washers, etc but excluding valves, strainers, gauges, etc.) duly insulated with following closed cell elastometric nitrile rubber of minimum 45 Kg / cu m density, thermal conductivity 0.037 W/mK or better at 20 deg mean temperature class ‘O’insulation applied by suitable rubber based adhesive complete including repairing of damage to building etc. as per specifications and as required complete in all respect. Note:-The Pipes of sizes 150mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.

Supplying, fixing, testing and commissioning of condenser water piping of nominal size - 150 mm. dia. of MS ‘C’ class along with all accessories, clamp, MS support structure, tees, elbows, reducer, union, flanges, rubber gaskets, vibration isolators, MS nuts bolts, washers, etc. but excluding valves, strainers, gauges, etc. adequately supported on rigid supports duly painted/buried in ground excavation and refilling, etc. as per specification and as required complete in all respect. Note:-The Pipes size 150 mm. & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150 mm. shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35 mm. thick M.S. Sheet for pipes upto 350 mm. dia. And from minimum 7mm thick MS sheet for pipes of 400 mm. dia. and above.

SITC of 150 mm. dia. INSULATED BALANCING VALVE with built in measuring facility with CI body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation of PN-16 pressure rating for chilled/hot water circulation.

Supplying, fixing, testing and commissioning of 150 mm.dia.BUTTERFLY VALVE (MANUAL - With Gear Operated) with C I body SS disc nitrile sheet & O - ring & PN 16 pressure rating.

S.I.T.C. of 150 mm. dia.BUTTERFLY VALVE with built in measuring facility with CI body flanged construction with EPDM coated disc with long pitch and PN-16 pressure rating for condenser water circulation as specified:

Supplying, fixing, testing and commissioning of single 150 mm. dia.Arch rubber bellow suitable for PN16 rating

Supplying, fixing, testing and commissioning of Diffrential pressure switch for evaporator and condenser of the above chiller.

Providing and fixing in position the industrial type pressure gauges with U type syphon and gun metal / brass valves, etc. complete as required

Providing & fixing in position the mercury in glass industrial type thermometers.

Supply of 3.5C x 150 Sq.mm. sizes of 1.1 KV grade multicore copper conductor XLPE insulated and PVC sheathed armoured cable as per IS-1554 (Part-I) 1988/IS-7098 (Part-I) 1985 respectively with upto date ammendments.

Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on cable tray as required. Above 95 sq. mm and upto 185 sq.mm. (clamped with 25/40 x 3 mm. MS flat clamp)

Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on wall surface as required. Above 95 sq. mm and upto 185 sq. mm (clamped with 25/40 x 3 mm. MS flat clamp)

Supplying and installing of size (225 mm. width X 50 mm. depth X 1.6 mm. thickness) perforated Hot Dipped Galvanised Iron cable tray cable tray with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc. as required.

Supplying and laying 25 mm. X 5 mm. G.I strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with G.I. nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50 mm.)

Providing and fixing 25 mm. X 5 mm copper strip in 40 mm. dia. G.I. pipe from earth electrode including connection with brass nut, bolt, spring, washer excavation and re-filling, etc. as required.

Supplying and making end termination with brass compression gland and copper lugs for size of 3½ X 150 sq.mm. (50 mm.) PVC insulated and PVC sheathed / XLPE copper conductor cable of 1.1 KV grade as required.

SITC of 400A MCCB 4-pole, 50ka, Ics=Icu,415 volt AC, 50 HZ thermal magnetic release type (Conforms to IS/IEC:60947-2)with Extended Terminals, separators, suitable operating handle including modification in the existing LT panel suitable for this MCCB I.e. Cutting and fabrication work in panel, mounting of the MCCB with required mounting arrangements, interconnecting the MCCB with the help of bus bar (min. 400 A current rating ) for connection with incomer and outgoing bus bar, works also included the dismantling of the existing switch fuse units etc complete as required as per the direction. (Note: Work to be carried out in the existing LT panel for which shutdown to be taken in co-ordination with the various agencies)

Dismantling of existing 06 nos. Fan Coil Units along with their Chilled / Condensor water piping connections and cables, approx. 100 mm.dia. MS pipe including providing blanking of existing chilled water pipe and making all good. Job includes shifting of dismanatled material to store as directed by AAI.

SH-II (A.I.C.M.C. - All Inclusive Comprehensive Maintenance Contract)

All inclusive comprehensive maintenance contract for above installation i.e. chiller plant, valves and gauges, etc. Job includes attending all complaints in all days including Saturday, Sunday and Holiday, descaling works once in a year and further as required, repairs / rectification work, supply and replacement of required spares / accessories/ parts, gas charging, consumables, rewinding works, monthly servicing visit, overhauling as required, periodic inspection, schedule / preventive / breakdown maintenance activities as per detailed specifications, terms and conditions and scope of work covered under this contract, etc. as required. The rate shall be inclusive of all spares and consumables required for complete system.

1st Year post DLP

2nd Year post DLP

3rd Year post DLP

4th Year post DLP

5th Year post DLP

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