TTPS Mech II BM Unit II III Transportation and erection of ERV silencer in Boiler Unit II III

Transporting the ERV silencer, pressure reduction unit and structural materials from central stores to site by cutting the plates to the required sizes.

Removing the roof sheet over the boiler at 62m level and side water protection sheets and shifting to safer location.

Transporting of materials to boiler roof level and fabrication and erection of suitable derrick for lifting the silencer and the structural material and for positioning at the location.

Erection of the winch at the convenient location at ground level, welding with supports, revealing the wire rope through roof device to the winch and revealing stay wire rope and removal of the supports after completion of work.

Transporting the silencer structural materials to roof level, fabrication and erection of suitable structures to the ceiling beam and the ERV vent pipe by drilling holes to bed plate.

Holding silencer and lifting up to the roof level and positioning at the fabricated structure align and erection and lifting of the pressure reducing unit and welding the eye hangers supports assembling the turn buckles adjusting & aligning.

Cutting the ERV vent pipe, positioning the pressure reduction units with the silencer edge preparation of the ERV vent pipe at the silencer and at the outlet valve and assisting for HP welding.

Providing drain line pipe near the Superheater air vent drain trough including edge preparation and welding including the provision of necessary support to the drain line.

Relaying the roof sheets and weather protection sheets, providing water drop protection sheet over the roof sheets and welding.

Arresting the existing worn out silencer by using derik post, cutting and removal of the supports of existing silencer.

Holding the existing silencer by the electric winch arrangements, remove the supporting ropes of the derik post, lifting down the silencer from 62mtr to 0 mtr level without damaging any equipments in boiler area.

Lifting the existing worn out ERV silencer by using truck, transporting to central stores, and keep it safely as instructed by the stores custodian.

Charges for providing risky platform in Boiler area from 52mtr to 62mtr EL at required locations for replacing the ERV silencer work including transportation of materials and dismantling of platform after completion of work.

Hire charges for welding generator and electric winch.

THIAGARAJAN ENGINEERING CONTRACTORS