Provn of Spl item DG Set 62.5 KVA and connected Gas pipelines for 200 LPM 02 Plant at Gangtok Mil Stn under GE Gangtok

Amount

Supply, erection, testing and commissioning complete of manufacturer of OEM manufactured, static silent (sound proof enclosure) diesel Engine Driven generating set capable of delivering 62.5KVA, water cooled, 415 volts (AC three phase, 4 wire system of supply) 50 Hz at power factor 0.8 minimum. The DG Set shall consists of diesel engine coupled to a matching alternator, through flexible coupling and mounted on common base frame and complete with control panel standardized by manufacture, fuel tank with mounting arragements and inlet outlet return inlet oil arrangement exhaust pipe complete and suitable for conditions prevalent at Sikkim (capacity of Engine, alterators shall be worked out taking all derating factors into consideration) including PCC foundation (of suitable size leaving at least 0.5 M all round for easy of movement and 0.5 M height) anti vibration pads, including all features to complete with latest CPCB guidelines and comprising of following as described in Sl item No. 1.01 to 1.05 :- Make : Mahindra & Mahindra Ltd/Kirloskar/CG/Ashok Leyland/Cumins

(i) ENGINE (Prime Mover) :- Diesel Engine 1500 RPM, direct injection, type four stroke, confirming to ISO 3046/ BS 5514, water cooled, naturally turbo charged, capable of giving not less than 90 BHP to drive alternator capable of delivering 62.5 KVA at outdoor atmospheric conditions at Sikkim, (Taking all derating factor into consideration), 12 Volt (as per manufacturer recommendations) electric battery start, complete with fly wheel all standard fittings/fixtures as per manufacture and including suitable panel with tachometer, lub oil, temperature, pressure guage and frequency meters and also including self starter system, dynamo, fuel electric control panel with electronic governor (ECPG) and engine protection system (Shut down, high water temperature, low lub oil, oil pressure, over speed etc) fuel tank and first fill of lub oil and other consumables etc complete all as specified and as directed.

(ii) ALTERNATOR :- Brushless AC alternator, 3 Phase, 415 volt, 4 wire, rated for output of 62.5KVA, Minimum power factor 0.8, 1500 RPM, IP-23 Protection class enclosure, insulation class 'H' salient pole, revolving field single bearing automatic voltage regulator coupled trhough flexible coupling with and to match the above engine. Note : Alternator capacity calculated as per ambient temperature 10 degree centigrade.

(iii) BASE PLATE:- Made out of structural steel as per manufacturer's recommended design/specifications. (iv) IN BUILT AMF CONTROL PANEL : Factory made cubical type inbuilt AMF panel board, indoor type made out of MS angle not less than 25x25x5mm and 16/18 gauge CRCA sheet, front opening type, protection class IP-54, duly powder coated, with electrolytic grade copper bus bar of 100 Amps capacity for four poles, with all standard switchgear and protection, internal wiring of adequate size PVC insulated multistranded copper conductor cable etc and also consisting of following :- (a) MCB 63 Amp, 415 volts, rating 4 pole 25 KA, rupturing capacity, specially fixed for incoming supply with over load relay, short circuit and earth fault protection - 01 No with suitable rating HRC back up fuses. (b) AMF logic panel including wiring , power contactor with MCCB suitable capacity for DG set of main supply, single phase preventor, digital multifunction meter (showing Amps, volts, Hz, KWH etc), Emergency stop button, DG Set over load, High water temp, low lub oil pressure, Auto charging unit and failure to start, Phase indiation lamp LED type RYB including all relays, circuit and protection required for automatic operation of DG Set.

(v) ACCOUSTIC ENCLOSURE :- Sheet metal fabricated cope type silent enclosure manufactured on CNC machines as per CPCB norms and powder coated after seven tank process, the enclosure shall be designed for reducing the sound level to 75 DB (A) at a distance of 1 M at 75% load under field condition and OX, 70 DB at 3M from Gen Set when DG Set is working at full load alongwith testing conformance, labelling certification etc.

(vi) Foundation/Plinth/Base :- Shall be provided as per manufacturers recommendations, however minimum 0.5 M space should be available all round the set and height of plinth shall not be less than 0.5M. (vii) Diesel storage tank as per manufacturer's specification. (viii) MISC : Tool kit, operation and maintenance catalogue spare part list, overhauling manuals, guarantee card etc shall be provided as per manufacturer's standard practices. (ix) Extentable of exhaust pipe upto 2 Mtr or as directed by Engr-in-Charge.

M&L for earthing complete with galvanized steel earth plate electrode 600x600x6mm thick buried directly in ground vertically to a depth not less than 2.25m below ground level with top edge of earth plate not less than 1.5m below ground level connected to galvanized iron earth strip 32 x6mm by means of bolts, nuts, check nuts, washers of galvanized iron and connected to main switch/control board upto 7.5m away from the earth electrode including excavation earth work, PCC chamber, RCC cover slab char coal, watering pipe, wire mesh lugs, earth lead protection pipe 40mm bore, medium grade 7.5 long as applicable and as per plate No. 3 of SSR Part-I 2009 and all as specified and as directed:- (a) Excavation and earth work in any type of soil (b) Drilling of holes in electrode. (c) PCC pit in cement concrete (1:2:4) type B-1 (d) 40mm thick pre-cast RCC cover or reinforcement with 8mm TMT bars at 100mm c/c both ways with suitbale handle. (e) Funnel with watering pipe of GI 20mm nominal bore, medium grade etc. (f) 40mm nominal bore medium grade GI protection pipe 7.50m long for protection of earthin lead. (g) Requisite quantity of charcoal and common salt. (h) Connection to earthing test point and testing on completion (j) GI strip beyond 7.5m shall be measured separately.

Supply and installation, testing, commissioning copper tube of 15mm dia soiled drawn seamless deoxidized, non-arsenical, half hard, tempered and degreased as per BS EN 13348:2001 duly supported with manufacturer test certificate for physical properties and chemical composition as oxygen gas pipe line from oxygen generating plant to existing manifold complete all as specified and as directed. Make of Copper pipe - Maxflow/Janya tubes/Mumbai/Star/Diamond/Easyflow/Raman Medical

Supply and fixing of ISOLATION VALVES :(ISO-9001-2008 SPECIFICATION) to control the pressure as well as for maintenance quarter turn open at 90-degree ball type valves would be provided. These valves would be of nickel-plated brass body having PTFE seat and inner outer seals. These valves would have stainless steel ball of specific ID clearance so that line pressure would not drop. For installation only PTFE gaskets would be used in between nuts and valve to prevent leakage. All the nuts for fixing the ball valve would be of brass with brass nozzles for easily brazing with copper tube. All ball valve assemblies would be on approachable height for easily operation of 15mm dia size complete all as specified and as directed. Make of isolation valve - Asha Medical Products/MPS/MR/Med/Raman Biomedical

MAHENDRA KHAWAS

KARMA TSETEN BHUTIA

KAMLESH ENTERPRISE

M/S S. S CHETTRI AND SONS

M/S ANIL KUMAR THAKUR

DHARMINDER SINGH