Salient Technical Features

For

Balance Works for Air Conditioning System Package for

Nabinagar Thermal Power Project (4X250 MW)

“Salient Technical Features of the equipment / systems / services covered

in IFB No. 40087585 are mentioned below. These Salient Technical Features

are mentioned only to facilitate the prospective bidders to prima-facie

understand the requirements under the tender and shall not in any way limit

or alter the scope of work and technical features / specification of

equipment / systems / services covered in the Bidding Documents. Detailed

provisions in regard of scope of work and technical features / specification

of equipment / system / services, contained in the Bidding Documents shall

be final and binding”.

1.0 SCOPE OF WORK

The broad scope of work includes design, engineering, manufacture, testing at

works, delivery and storage at site, erection, testing and commissioning of

following:

a) All air-conditioning equipments for Central Control rooms, Control Equipment

rooms, SWAS room, UPS & Battery charger rooms, etc. in main Power House,

ESP & VFD control rooms, various office areas, entrance lobbies, visitor & VIP

lounge, reception area etc. of Service building.

2.0 BRIEF DESCRIPTION OF AIR-CONDITIONING SYSTEM

It is proposed to provide vapour absorption machines & Screw/centrifugal chilling

machines to meet the air conditioning requirement of all the air conditioned areas

of Central Control rooms, Control Equipment rooms, SWAS room, UPS & Battery

charger rooms, etc. in main Power House, ESP & VFD control rooms, various

office areas, entrance lobbies, visitor & VIP lounge, reception area etc. of Service

building. Other DCS/PLC based control rooms of auxiliary buildings would be air-

conditioned using split non-Ductable/Ductable air conditioners. Details of major

areas to be air conditioned and the equipments proposed to be provided are

elaborated in the following para.

2.1 The A/C system would comprise of:

i) 4 X 300 TR Capacity Vapour Absorption Machine (existing Voltas make) and 4 X

300 TR Screw/Centrifugal chilling machine.

ii) 6 Nos. each of 210 m

/hr capacity Chilled water pumps.

iii) 1 Nos. 330 m

/hr capacity Condenser water pump.

iv) 1 Nos. 360 m

/hr capacity Cooling tower.

v) 25 Nos. of air handling unit (AHUs).

vi) Interconnected piping, duct work, insulation, valves, instrumentation, etc.

Note: Erection and commissioning of existing 4 X 300 TR Capacity Vapour Absorption

Machine (Voltas make, which was already supplied and available at site) shall also be

envisaged under this package.

2.2 For meeting air conditioning requirements of DCS based control locations of

offsite buildings, Casette/Split type air-conditioners of suitable capacity are

envisaged.