Salient Technical Features for R&M of Main Plant Turbine Generator Package, Unit #1-3

for Ramagundam Super Thermal Power Station, Stage-I (3 x200 MW)

“Salient Technical Features of the equipment/systems/services covered in IFB No. 40031019 dated 19.12.2014 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/systems/services, contained in the Bidding Document shall be final and binding.”

SALIENT TECHNICAL FEATURES:

Brief Scope of work

The scope of R&M of Main Plant Turbine Generator Package, Unit #1-3 of Ramagundam Super Thermal Power Station, Stage-I (3 x 200 MW) includes design, manufacture, engineering, inspection, testing, packing, forwarding to site, unloading, erection, supervision, pre-commissioning, testing, commissioning and performance testing of three (3) no. steam turbine generator unit along with auxiliaries. The scope also includes disassembly of existing equipment / systems, replacement of specified equipments / systems by supplying new equipments/ systems including supply of assembly materials, with new modernized equipments / components compatible to existing facilities / layout by Re- engineering / Re- Design etc. The major work under this Renovation & modernization package is given below; however, the detail scope of work shall be as specified in the bidding documents.

Replacement of existing HP- IP combined and LPT with new & improved design HP- IP and LPT modules retaining LPT outer casing, stop & control valves, Turbine governing system, Turbine control system, etc. In addition, the scope covers replacement / refurbishment / retrofitting / modernization of associated turbine and generator auxiliary equipments, piping, valves, Hangers & supports etc.

Major Technical Features of Steam Turbine

(a) Type

The steam turbine shall be tandem compound, single reheat, regenerative, condensing, multi cylinder design with combined HP and IP and separate LP casing(s) directly coupled with generator suitable for indoor installation.

(b) Rating

The steam turbine generator unit shall conform to the following design and duty conditions:

(i)

Output under Turbine maximum

:

210 MW

 

continuous rating (TMCR) at generator

 

 

 

terminals

 

 

 

 

 

 

(ii)

Turbine throttle steam pressure

:

150 Kg/cm2 (abs)

(iii)

Turbine throttle main steam temp.

:

535oC

(iv)

HPT Exhaust Pressure

:

35.7 Kg/cm2 (abs)

(v)

Reheat steam temp. at turbine inlet

:

535oC

(vi)

Condenser pressure

:

76 mm Hg (abs)

 

 

 

 

(vii)

Turbine speed

:

3000 rpm

 

 

 

 

(viii)

Frequency variation range around rated

:

+ 3% to - 5% (47.5

 

frequency of 50 Hz

 

Hz to 51.5 Hz)