Carrying out annual overhauling of Heat Recovery Steam Generator HP, IP and LP water/steam system valves of various sizes, Safety valves, STG and HRSG Flash tank, IBD and CBD tanks, Gland Steam Condenser, Deaerator and Feed water storage tank overhau

Amount

Overhauling of HP, IP & LP drum in HRSG Charges for overhauling of one number drum. Charges for removal of manhole door insulation, opening of manholes, inspection of the internal parts for corrosion and erosion, cleaning of drum internals, inspection for any cracks near welds and rectification of minor weld defects, assembling of internals, and boxing up of the Drum with new manhole gaskets and refixing of manhole door insulation as per the direction of the Engineer - in - charge

Overhauling of Flash tanks (STG and HRSG), IBD & CBD tanks Charges for overhauling of one number tank. Charges for removal of manhole door insulation, opening of manholes, inspection of the internal parts for corrosion and erosion, cleaning and replacement of the same if required, inspection for any craks near welds and rectification of minor weld defects. Assembling of all the internals and boxing up of the tank with new manhole gasket and refixing of manhole door insulation, as per the direction of the Engineer-in-charge.

Inspection of Heat Recovery Steam Generator (HRSG) internals. Inspection of Heat Recovery Steam Generator (HRSG) internals such as Economiser, Evaporator and Super heater areas etc., by opening HRSG manhole doors at various elevations, assistance for inspectionof HRSG internals, inspection & rectification of manhole sealing plates if any, renewal of manhole sealing ropes and boxing up of manhole doors after HRSG internal inspection as per the direction of Engineer - in - charge.

Overhauling of 50mm to 75mm size pneumatic control valves Labour charges for disassembling the valves and actuators completely including removal of insulation, overhauling of valves including inspection, rectification of defects, lapping of valve seat, renewal of gaskets, gland packings, sealing rings, actuator diaphragm and springs if necessary, cleaning of all the parts, assembling of valve, yoke and actuator providing insulation, checking of valve operation and completing the work as per the direction of the Engineer in-charge.

Overhauling of 200 to 250mm size Mov/Hand operated valves/NRV Charges for disassembling actuator if any, removal of insulation, disassembling valve completely, overhauling of valves including inspection, cleaning of all parts, rectification of minor defects, lapping of valve seat, valve globe/gate and blue matching, assembling of valve, renewal of gland packing, assembling actuator if any, providing insulation, checking of valve operation and completing the work as per the direction of Engineer-in-charge.

Overhauling of 125 to 150 mm size Mov/Hand operated valves/NRV Charges for disassembling actuator if any, removal of insulation, disassembling valve completely, overhauling of valves including inspection, cleaning of all parts, rectification of minor defects, lapping of valve seat, valve globe/gate and blue matching, assembling of valve, renewal of gland packing, assembling actuator if any, providing insulation, checking of valve operation and completing the work as per the direction of Engineer-in-charge.

Overhauling of 125 to 150 mm size Mov/Hand operated valves/NRV Charges for disassembling actuator if any, removal of insulation, disassembling valve completely, overhauling of valves including inspection, cleaning of all parts, rectification of minor defects, lapping of valve seat, valve globe/gate and blue matching, assembling of valve, renewal of gland packing, assembling actuator if any, providing insulation, checking of valve operation and completing the work as per the direction of Engineer-in-charge.

Overhauling of 40mm to 50mm size MOV/Hand operated valves and NRV’s : Charges for disassembling actuator if any, removal of insulation, disassembling valve completely, overhauling of valves including inspection, cleaning of all parts, rectification of minor defects, lapping of valve seat, valve globe/gate and blue matching, assembling of valve, renewal of gland packing, assembling actuator if any, providing insulation, checking of valve operation and completing the work as per the direction of Engineer-in-charge.

Overhauling of 10mm to 25mm size MOV/Hand operated valves and NRV’s : Charges for disassembling actuator if any, removal of insulation, disassembling valve completely, overhauling of valves including inspection, cleaning of all parts, rectification of minor defects, lapping of valve seat, valve globe/gate and blue matching, assembling of valve, renewal of gland packing, assembling actuator if any, providing insulation, checking of valve operation and completing the work as per the direction of Engineer-in-charge.

Overhauling of safety valves Charges for disassembly of safety valve, noting original settings, inspection, cleaning of all parts, rectification of minor defects, lapping of seat and disc, replacement of damaged parts if any and assembling of safety valve without disturbing the original setting as per the direction of the Engineer-in-charge.

Assistance during floating and Setting of safety valves Charges for assistance during floating and setting of safety valves, as per the direction of the Engineer-in-charge.

Assistance to Hydraulic test: Labour charges for providing assistance during hydro test of the boiler – HP, IP & LP which includes gagging of safety valves, locking of spring hangers, operation of air vents, drains and valves, raising the pressure to the hydro test pressure, conducting prelimnary hydro test and restoration works after the hydro test, as per the direction of the Engineer – in –charge.

Charges for High Pressure Welding upto 150mm Charges for welding joints upto 150mm diameter steam / water lines using High Pressure Welder after testing the weld by using DPT kit, including as per the direction of Engineer-in-Charge.

Charges for High Pressure Welding upto 150mm Charges for welding joints upto 150mm diameter steam / water lines using High Pressure Welder after testing the weld by using DPT kit, including as per the direction of Engineer-in-Charge.

Charges for overhauling of Auma/Rotork Actuators : Charges for disassembly of control units, drives and limit switches and drive bush, worm gear assembly, bearings and oil seal, inspection and complete cleaning, replacement of wornout/damaged parts, assembling of the above metioned parts, testing, limit checking and commissioning of the actuator as per the direction of the Engineer in-charge.

Overhauling of Gland Steam Condensor Charges for disassembly and lifting of side water boxs, lifting of shell and tube nest, cleaning of water boxs, tubes and all parts, inspection of tubes for any leak and plugging if necessary, preparation of gaskets and sealing chord, assembling of all parts, water inlet and outlet flanges, charging and normalizing the Gland steam condensor as per the direction of Engineer-in-charge

Overhauling of De-aerator and Feed water storage tank : Charges for removal of manhole doors insulation, opening of all vents, manholes, internal inspection of the internal parts for corrosion and erosion, cleaning of tank internals and replacement of the same if required, inspection for any cracks near welds and rectification of minor weld defects. Assembling of all the internal and boxing up of the De-aerator and feed water storage tank with new manhole gaskets and refixing of manhole doors insulation, as per the direction of the Engineer in-charge.

Charges for one coat of ferrotal painting inside the De-aerator and Feed water Storage tank with suitable safety appliances including material, labour as per the direction of Engineer-in-charge. Paint (material Cost)

THIAGARAJAN ENGINEERING CONTRACTOR (BID ID -1352353)