Salient Technical Features of equipment/systems/services covered in IFB No. : 40083527 dated

12.06.2018 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 feature/specifications of equipment/systems/services

covered in the bidding documents. Detailed provisions with regard to scope of work and technical

specification/equipment/services, contained in the bidding documents shall be final and binding.

BRIEF SCOPE OF WORK:

Switchyard including miscellaneous Electrical Works for BOP Package at Talcher TPP, Stage-III

(2x660 MW) covers complete 400 kV GIS Switchyard, 66 kV AIS Switchyard/Sub-Station at Plant &

MUWPH end, 132 kV EHV cable supply, termination for startup power from existing 132 kV

Switchyard to start up transformer at Talcher TPP, Stage-III along with supply and installation of LT

Switchgear, Bus Duct, DC Battery & Battery Charger, Power & Control Cables, Earthing & Lightning

Protection, cabling and lighting for Raw Water, Cooling Tower, Make-up Water and WTP system.

It shall also include 11/.415 kV Outdoor Transformer for various offsite system like MUW, DM, PT,

CW chlorination, CT, CHP, WT/TH, LHP (Limestone Handling Plant) etc. and 11/3.45 kV Transformer

for CHP HT Switchgear as indicated in single line diagram.

400 kV GIS Switchyard shall employ one and half breaker scheme. Following System / equipment

shall also be covered under the scope work of the contract:

A. 400 kV Gas Insulated Switchyard

i) Two (2) Nos. 400 kV Generator Transformer bays

ii) Two (2) Nos. 400/11.5 kV Station Transformer bays

iii) Four (4) Nos. of 400 kV line bays

iv) One (1) No. of future line bays

v) One (1) No. 125 MVAR Bus Reactor bay

vi) Five (5) Nos. Tie bays

B. 400 kV Air Insulated Switchyard

10 Nos. of 3-phase connections between GIS and AIS Station Transformers, Bus Reactor,

Generator Transformers, Line bays along with associated CVT, LA and WT as per SLD &

tender drawings.

C. 66 kV Air Insulated Switchyard

i) 66 kV Air Insulated S/S at Plant end

ii) 66 kV Air Insulated S/S at Make-up Water end

The above scope of work shall include overall project management, co-ordination, design,

engineering, supply, erection, testing and commissioning of 400 kV SF6 Gas Insulated

Switchyard, 400 kV pothead yard & 66 kV Air Insulated Switchyard, Switchyard control

room building, GIS building, Control Relay & Protection Panels and associated civil &

structural works.

The scope shall also include ventilation system of GIS building and air-conditioning of

control room building and civil works for switchyard service transformer, Bus Reactor etc.

D. Supply, Installation & Commissioning works of following electrical equipments for RW,

CT, MUW, and WTP systems.

1. LT switchgear & Bus Ducts

2. Power cable & control cables

3. DC Battery and Battery Charger

4. Earthing & lightening Protection

5. Cabling, including Lighting for cooling tower

6. Admin building & workshop

E. Supply, Installation & Commissioning of outdoor transformers (11/.415 kV) for MUW

service, DM service, PT service, RWPH service, CW chlorination / CT Service, WT

(Wagon Tripler) / TH (Track Hopper) service, CHP CH (Crusher House) service, CHP

(Coal Handling Plant) / LHP (Lime stone Handling) service, admin building, workshop

and 11/3.45 kV CHP transformer as indicated in single line diagram.