PROVISION OF STAND ALONE DG SET (320KVA) AND ALLIED ITEMS AT 10 AFH AT AF STN HASIMARA

Amount

Excavating in post holes (or similar holes) each n. exc. 0.5 cum, getting out, returning, filling in and ramming earth or broken rubble mixed with earth around, in layers not exceeding 25cm, watering, and removing surplus soil to a distance n. exc. 50m and making good surfaces, complete all as specified and directed.

M&L for PCC (1:3:6) type C-2, (using 40mm graded crushed stone aggregates) as in foundation, filling and mass concrete, complete all as specified and directed.

M&L for structural steel work in tubular trusses, purlins,post including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to IS 1161-1979 grade St.-240 including preparation of surfaces and applying one shop coat of redoxide primer, complete all as specified and directed.

S&F MS plates (plain or chequered) channels, square, cut or notched (ordinary and counter sunk) forming holes, without any attachment, steel of Fe 410-W (Gde E250) quality-B, complete all as specified and directed.

S&F pre painted galvalume aluminium zinc coating GI based corrugated steel sheet, 0.50mm thick, of any colour, having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws, complete all as specified and directed.

S&F pre painted galvalume aluminium zinc coating, GI based plain steel sheet 0.50mm thick, of any colour, having tensile strength of 550 Mpa as in ridge/flashing/cladding to wall fixed with self tapping screws, complete all as specified and directed.

M&L for preparation of new steel or iron surfaces of any description, over 10cm in width or girth, not otherwise described and applying two coats of synthetic enamal paint (1st grade quality) over a coat of red oxide, complete all as specified and directed.

Supply, installation, commissioning and testing of static silent diesel engine driven generating set suitable for out put of 320 KVA, 415 volts, 3 Phase, 4 wire system of supply, AC, 50 HZ at power factor 0.8 minimum, 1500 RPM as per IS:13018 and alternator as per IS:13364 complete with AMF panel for automatic starting on mains failure, control panel (AMF) having meters, sound proof canopy as specified below . The DG set shall consist of a diesel engine coupled directly to a matching alternator and mounted on Anti vibration pads as recommended by manufacturers on a common base frame and installed in the latest CPCB norms approved acoustic enclosure complete with control panel as recommended by manufacturer, complete all as specified and directed and shall comprise of the following:- (A) Engine (Prime Mover): Directly coupled diesel engine water cooled, suitably de-rated of matching BHP for driving 320 KVA capacity alternator electric start, four stroke designed to run continuously at 1500 RPM confirming to latest IS 13018, BS 5514 standard with an over load capacity of 10% for one hour in every 12 hrs operation complete with following accessories:- (i) Fly wheel to suit flexible coupling. (ii) Flexible coupling with guards. (iii) Dry type Air cleaner with filters. (iv) Lubricating oil filter. (v) Anti-vibration pad as recommended by manufacturers. (vi) PT/Micro fuel pump with electronic governor of suitable capacity. (vii) Self starter 24 volts DC. (viii) Battery charging alternator. (ix) 2 Nos, 12 Volts batteries as recommended by manufacturer along with flexible copper battery lead and connector. (x) Standard safety device as recommended by manufacturers. (xi) Daily service fuel tank for full running capacity of DG set for min 08 hours enclosed within the canopy all as per CPCB with lever indicator, inlet, fuel outlet drain plug, air vent and locking arrangements etc.

Item No. 8.00 Contd.... (xii) Exhaust system shall be provided with thermal insulation by using fire retardant / non igniting foam conforming to BS-4735 to prevent excess heat radiation on the engine and stage for operator. (xiii) Engine display should have KW, KVA, KWH, KVAR, Power Factor, Phase to Phase & Phase to Neutral Voltage, Ampere etc., and having the following Display also:- (a) Lubrication oil temperature (b) Lubrication oil pressure (c) water temperature (d) Battery voltage (e) Indicator lamp etc (f) Safety measures to be included for the following conditions :- (i) Low lubricant oil pressure trip (ii) High coolant temperature trip (iii) Engine over speed trip (iv) Emergency stop. (B) Alternator: 320 KVA, 256 KW at 0.8 power factor minimum, self-regulated, 3 phase with neutral 415 Volts, 50 Hz, 1500 RPM, screen protected, self-excited & self-reregulated, brush less as per IS /IEC 60034-1& will be suitable for tropical conditions complete with automatic voltage regulator and foot mounted including making cable connection. The salient feature of alternator are as under:- (i) Voltage regulation under static condition + 1.0% (ii) Class 'H' insulation (iii) Permanently lubricating bearing (iv) Capable to take 10% over load for one hour for every 12 hours

Item No. 8.00 Contd.... (C) AMF Panel : AMF Panel out side the canopy as per OEM recommendations and suitable for 320 KVA DG set. Two number of MCCB 400 Amp 36 KA and two numbers of contactor with Neutral link complete along with AMF control panel shall be factory made, cubical type, double door, IP-54 protected, floor mounted, totally enclosed and shall be fabricated out of CRCA sheet 3.15 mm thick CPRI approved over and including angle made out of 50x50x6mm angle with removable side cover hinged front panel rear panel for esay accessibility powder coated complete with internal wiring with suitable size copper conductor cable and cable gland for external connection complete suitable for 320 KVA DG set with by pass arrangement including all necessary operating and control device such as contactor, MCCB, of suitable rating or as recommended by OEM, multifunction meter, indicating lamp, with protection fuse for panel instrument battery charges with indicator cut of low and high oil pressure, high speed, over load and earth fault protection, reverse current protection programmable microprocessor based controller with auto manual switch, start/stop control switch with flexible copper conductor cable and cable connection with lugs/thimbles complete as recommended by manufacturer. (D) Acoustic Enclosure: Floor mounted acoustic enclosure suitable for minimum 320 KVA DG set as per CPCB norms of the make as that of DG set be provided. Note: (i) DG set shall be composite type prime mover and alternator and allied accessories in one enclosure, including PCC/RCC foundation suitable for 320 KVA DG Set as per OEM recommendations. (ii) DG Set shall be confirming to guidelines as per MOEFCC circular No, GSR 804 (E) New Delhi dt 03 Nov 2022. Emission limits for Generator set shall be as following:- (a) NOX + HC <4.0 (b) CO < 3.5, (c) PM <0.2 (d) Smoke (light absorption co. efficient) < 0.7

Item No. 8.00 Contd.... (iii) Scope of work include DG set with external POL tank and foundation as per OEM specification suitable for 320 KVA DG set as per PS clause. (iv) Contractor has to submit the schematic diagram of DG set, AMF panel, External POL Tank, single linediagram of AMF panel, DG set coupling arrangement, dimendions of External POL Tank. (v) Contractor has to arrange the M&L for load testing of DG set (12 hrs) before completion of work in presence of Rep of Accepting officer. The water load for testing of DG set, necessary T&P shall be arrangement by contractor, pol required for testing of DG set shall be arranged by the contractor at his own cost, nothing extra shall be paid by the Govt on this account

M&L for earthing in repair and earthing complete with GI earth plate electrode 600mm x 600mm x 6mm thick buried directly in ground vertically to a depth of not less than 2.25m deep below normal ground level with the top edge of earth plate at a depth of not less than 1.5m below ground level connected to GI earth strip 32mm x 6mm by means of bolts, nuts, washers of galvanised iron or steel, GI earth strip shall be protected by 50mm dia GI pipe 'light grade', watering pipe 20mm dia GI pipe 'medium 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 in any type of soil, PCC (1:3:6) type C-1 earth Pit, 40mm thick RCC cover (1:2:4) type B1 mix with 8mm dia TMT bars @ 100mm c/c both ways etc complete all as shown in electrical plate No.3 connected to main switch / MCB DBs box point / LP test point and including testing on completion all as specified and as directed. Note: (i) Quoted rate shall deemed to be included the cost of excavation and earth work in any type of soil strata, funnel, earth strip up to 7.5metre etc. (ii) Earth resistance should be less than 5 Ohm up to warranty period of one year. In case earth resistance is not found satisfactorily contractor shall redo the same earthing within the warranty period.

Supply, laying, jointing and testing cable XLPE insulated, screened, PVC bedded galvanised steelstrip or wire armoured electric power cable (heavy duty) with stranded aluminium conductor, 1100 volts grade, in trenches/fixed on walls of size 300 Sqmm, 3.5 core, confirming to IS 7098 (Part-II), complete all as specified and directed.

Excavation in trenches not exceeding 1.5 metre wide and not exc 1.5 metre in depth for foundation of pole/stay, or cable trenches and getting out in soft/loose soil, complete all as specified and directed.

Returning, filling in including spreading, leveling, watering and well ramming in layers not exceeding 25cm in soft/loose soil, complete all as specified and directed.

Removing excavated materials to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 metre above the starting point in any type of soil, complete all as specified and directed.

Supply and laying double walled corrugated (DWC) HDPE duct pipe of 100mm bore, conforming to IS, approved colour, complete with fittings for cable protection, complete all as specified and directed.

Horizontal boring under the road (with manual method) below 1mtr from the road surface and dia of hole not exc. 100mm, without damaging the existing road, getting out and disposal of soil to a distance n. exc. 50m from the site of work, complete all as specified and directed.

DEEP NIRMAN

M/S. VINITA CONSTRUCTION

M/S. KUMAR CONSTRUCTION CO.

SHRI SURAJIT SIKDER

M/S SARKAR ELECTRIC

MAJUMDER ENTERPRISE

M/S ANIL KUMAR BAUL

M/S ASHOK ENTERPRISE