TTPS Mech II BM Unit I II III Attending Breakdown works in HP valves actuators safety valves WB LRSB PRDS etc in Unit I II III boiler for a period from 01 04 2023 to 31 03 2024

Overhauling of 25 mm size gate/globe valves (NB:1”,1/2” & 3/8” valves and NRV’s of class 800/1500/2500)

Overhauling of 40 mm and 50mm hand operated Gate / Globe valves

Overhauling of 65mm to 150mm hand operated Gate/globe valves

Overhauling of 65mm to 150mm electrically operated Gate/globe valves

Overhauling of 200 Nb / 250 Nb Gate / Globe valve (Motor operated)

Overhauling of 300 Nb / 350 Nb Gate / Globe valve (Motor operated)

Charges for overhauling of Feed control valves(FCV) including dismantling, inspection, rectification of effects, if any, lapping of valve seat and disc, renewal of sealing rings, gland packing etc. cleaning of all parts, freeing of all fasteners, inspection of drive bush, bearings, etc. and renewing if necessary, assembling the valve, yoke etc.

Charges for Overhauling of Electrical actuator of any size

Charges for releasing of mechanical jam (wall deslaggers) in the travel tube assembly of one soot blower

Charges for Attending steam valve defects/ renewal of valve flange gaskets/ attending to travel gear box/ rotory gear box slipping problem in one soot blower

Charges for drawal of LRSB lance tube from stores/ Reconditioned LRSB tube from pocket stores, transporting to Boiler area leading, lifting to above 40 m elevation of Boiler using pulley and rope, Dismantling/ cutting removal of defective Lance tube from LRSB, fixing new/ Reconditioned lance to in position, lowering the defective lance tube to ‘0’ m ground floor, devoluting the scrape to stores.

Charges for replacement & welding works in low pressure boiler pipe lines upto 25 NB Carbon Steel pipe

Charges for replacement & welding works in low pressure boiler pipe lines upto 50 NB Carbon Steel pipe

Charges for replacement & welding works in low pressure boiler pipe lines upto 100 NB Carbon Steel pipe

Charges for attending to any other breakdown works in any one of the equipment namely wind box assemblies, burner tilt mechanism, fuel firing system, scanner air fans, hot well makeup pumps & other accessories in Boiler & PRDS by replacement of spares or assembly and including consumables and T&P etc.

Charges for transportation of insulation wool, cladding sheet in the locations, pipe lines from 8 m to 56 m level, transportation of required wool, cladding sheet, fixing the wool, sheet etc., and disposal of debris, etc. complete.

Charges for leading, lifting and arranging platform and scaffolding wherever required in the boiler and dismantling after completion of work.

Charges for transportation of required of materials & pipes to the 8 m level platform, opening the peep hole breaking the slag formed in the goose neck portion of the boiler by pocking and pushing down the slag & clinkers through peep hole then and there till normalization and other adjacent area in the Boiler.

Charges for cutting and removal of corroded/damaged structural platforms, supports, etc and devolution to central stores including all consumables such as oxygen acetylene gas etc and T&P’s complete.

Charges for fabrication and erection of platforms at various locations of boiler with proper supports and hand rails with Iron & Steel materials, grills (or) modifying the existing approach platforms by cutting and re-erecting, for a safe movement of men and material. This work includes all required consumables. (such as gas, welding electrodes, grinding stones, ropes, slings, cotton waste, etc.,) and T&P’s (such as welding machine, cutting set, grinding machine etc.,)

THIAGARAJAN ENGINEERING CONTRACTOR