MTPS I BM Unit IV Boiler Pressure parts AOH 2025 Overhauling of HP LP valves and replacement of defective valves

Amount

Charges for overhauling of Main steam stop valve and 300/250 valve

Charges for overhauling of Valve of sizes 150/250, 100/250 and 65/250

Charges for overhauling of Valve of sizes 250/40, 200/40,150/40 & 100/40

Charges for overhauling of 40 mm to 50 mm valves

Charges for overhauling of 15 mm to 25 mm valves

Charges for overhauling of 65 mm ’ Y ‘type valves

Charges for overhauling of Thermal drains, WWSB Line, APH SB line control valves, RH/ SH spray control valves including dismantling, inspection, lapping of valve seat and disc, renewal of spiral wound gasket and gland packing etc. cleaning, freeing of all fasteners and renewing if necessary, assembling the valve

Charges for transportation of new/ reconditioned valves from stores to Boiler site, cutting the damaged valve and fixing the new valve in position Valves of size up to 25 mm

Charges for transportation of new/ reconditioned valves from stores to Boiler site, cutting the damaged valve and fixing the new valve in positionValves of size 40 mm to 50 mm

Charges for cutting of 65/250 size valve due to passing in various system of boiler includes the charges for transportation of new valve from central stores, cutting the existing valve, edge preparation, positioning the new valve and welding with IBR quality welder.

Charges for cutting the damaged 100/250 size of start up vent valves, edge preparation, transportation of new valves from stores, removal & refixing the insulation, fixing the valve in position and provide support for the line, welding with IBR quality welder. Preheating, post heating and stress relieving for the joints.

Cutting Gas

Argon gas

Welding Rod Supratherm Special 2.5mm/chromotheme -1 for valve replacement works

Supply of Champion Style-54 Super metallic Compressed Asbestos Fibre joining sheet to withstand Temp 600° C, Pressure 160 kg/cm2. IS 2712/1998/Grade W1Size : 2000 mm x 1500 mm x 3 mm thick

Pure Graphite self-Sealing ring to withstand Pressure 250Ksc and Temperature 600 0C size: 330 x 264 x 40mm X 45° Suitable for FW line valves.

Soft iron self-Sealing ring to withstand pressure 250Ksc and Temperature 600 0C size: 360 x 320 x 40mm X 60° Suitable for Unit IV MSSV

Pure Graphite self-Sealing ring to withstand Pressure 250Ksc and Temperature 6000C size:170x136x21mm X 45° Suitable for Unit-IV 150/250 valves.

Soft iron self-Sealing ring to withstand Pressure 250Ksc and Temperature 6000C size:125x100x18mm X 45° Suitable for Unit-IV 65/250 valves.

Soft Iron self-Sealing ring to withstand Pressure 250Ksc and Temperature 6000C size:115x101x14mm X 60° Suitable for Unit-IV 100/250 valves.

Soft Iron self-Sealing ring to withstand pressure 250Ksc and Temperature 6000C size: 90 x 80 x10mm X 60° Suitable for Unit-IV 65/250 TOA valves.

Pure graphite gland packing ring of min 99.5% carbon to withstand pressure of 250Ksc and temperature 600 C suitable for MSSV valve size : 107 x 75 x 16 mm

Pure graphite gland packing ring of min 99.5% carbon to withstand pressure of 250Ksc and temperature 6000C suitable for Y type valve size :76.2 X 31.5 X 12.5 mm

Pure graphite gland packing ring of min 99.5% carbon to withstand pressure of 250Ksc and temperature 6000C suitable for 2” & 1 ½ ‘’ valve size :55.6 X 27 X 13 mm

Pure graphite gland packing ring of min 99.5% carbon to withstand pressure of 250Ksc and temperature 6000C suitable for 1” valve size :41.3 X 17.2 X 12 mm

Spiral wound gasket SS 304 filled with Asbestos/ grafoilize:380x340x3.2mm for HFO Filter

T & Ps and consumables

KUMAR ERECTORS (BID ID -1424856)