TTPS ES Circle EM I Annual Maintenance of Turbo Generator I and its allied works to be carried out during the overhauling period for the year 2024 25

Charges for Purging of H2 gas in TG casing

After completion of overhaul purging out of air by CO2 and CO2 by hydrogen to the required pressure as decide by site engineer.

Phase side and Neutral side bushing cleaning: Opening the manhole at Generator bottom side, removing partition plate at turbine and exciter end. Cleaning inside of Generator. Inspection of generator phase side and neutral side bushing and terminal. Checking gas trap pipe connection at stator water bushings.

Generator rotor Slip ring cutting and polishing work : Disconnection of field cable, removal of brush gear from bed and cleaning polishing, cleaning of brush holder, Erecting brush gear, connection of field cable and changing of all carbon brushes after completion of slip ring polishing work.

Transporting of slip ring cutting lathe: Transporting of slip ring cutting lathe from unit 1 stores and fixing the brush gear bed. Cutting the slip ring to a required diameter, groove cutting and finishing work decided by the engineer and recording all measurements.

Generator Casing Painting: Labour charges for painting of one coat of enamel paint to generator outer casing including cost of paint & consumables.

Generator rotor field polarity changing work: By changing the field breaker busbar arrangement in the DVR Room

SARASWATHY ENGINEERING AND CONTRACTORS (BID ID -1084268)