500KV Disel Generator and Associated Electrical works

DIESEL GENERATOR & ASSOCIATED WORKS

Detailed design, manufacturinig, fabrication, transportation, supply, unloading, storage, installation, testing and commissioning of the DGs & associated works listed below, quoted rates shall include all required items, no additional cost will be paid. The complete work shall satisfy CPCB-IV

DG SET

415V, DG set of Prime duty, Radiator Cooled, self driven alternator, designed for operating on high speed diesel(HSD), with residential silencers, four batteries, base frame, anti vibration pads, Drip trays, Electric driven lube oil priming pump, Lube oil and Coolant complete with adapter box and other components as required. All complete as per relevant standards, technical specification of this tender, direction of engineer-in-charge.

FUEL TANK & PIPE

EXHAUST SYSTEM

Supplying, fixing & installing exhaust pipe fabricated out of 5 mm thick Class B MS and all fixing accessories and hardware for the following with 28G, aluminum sheet cladding & 100 mm thick 150 kg/cu.m density mineral wool insulation wrapped in chicken mesh including all supporting structure with arrangements like supporting frames, hooks, clamps, hardware & fasteners Etc complete as required. Necessary MS supporting accessories with anchor fastener bolts etc., to support exhaust pipe (limited to DG room), Residential silencer etc., All stacks are provided with the stack monitoring points along with the safe access arrangements. The stack shall have a porthole for monitoring the emissions

Vendor shall ensure that the Exhaust pipe vibration/heat is not transferred to the building. The exhaust pipes shall be supported in such a way that free thermal expansion of the pipes is possible, with out exerting pressure on the the structures etc. Also vendor shall provide expansion bellows and spring supports at suitable intervals for horizontal lengths to allow free expansion. The installation rate shall include necessary anti vibrating mounts/High-tech spring supports/MS angle supports at standard intervals. DG breather outlet pipe should be extended outside the DG enclosure & should be extended in the opposite direction of Radiator.

The DG stack has to be provided with conventional Lightning arrester, the down conductor 25x6mm GI strip to be connected to existing earth pit.

The day tank, steel structures are to be connected to the earth grid at two locations

Stack Height : H = h + 0.2 Sqrt(capacity of DG in KVA). h=Building Height - Varies and DG size-Varies, Hence stack height varies.

CONTROL CABLE BETWEEN PANEL TO DGs

Control Cabling (Copper Multistring Armoured Cable) 650/1100V ,Grade conforming to IS-7098(part-1)1988 .

End termination kit suitable for the above cable with copper lugs and single compression gland

DESIGN & DRAWINGS

The following needs to be furnished for engineer-in-charge for drawing approval, the softcopy through email and three sets of hard copies.

The entire DG room / yard arrangement shall be properly marked with dimensions in the shop floor drawings showing plans, sections & elevations.

Complete set of equipment GA drawing with Technical Data Sheet

Temperature rise calculations inside DG room at full load with sizing calculations for fresh air and hot air louvers/attenuators shall be furnished

Back pressure calculation

ELECTRICAL:

The power cable / busduct supply, erection, testing & commissioning are not part of vendors scope, but the vendor has to assist the Client's electrical contractor to carryout the work.

The suitable adaptor box shall be provided by the vendor to terminate the power cable/busduct at alternator terminals.

The 24 volts chargeable batteries of 180 AH including initial charging of batteries, battery leads, MS stand of Batteries, should be earthed, top acrylic transparent sheet cover should be provided covering the Battery live terminals.

DGs shall have manual operation feature, it shall also be switched on/off from Main LT panel by using lockable push buttons.

TESTS:

All the factory test reports to be submitted

Type Test certificate shall be submitted along with the offer

To check and conduct periodic emission test, the vendor to make a provision at appropriate location and it shall be easily accessible from gound level