MTPS I TM Units I to IV Attending the preventive breakdown maintenance works of Valves Pipe Lines reducers by cutting and welding gasket renewing of valves flanges and Overhauling of defective passing Valves in Units I to IV during 2022 23

Amount

Replacement of defective /worn out GV/GLV 1"/1500/2500 class valves or equivalent.Charges for cutting the defective 1" valve or equivalent 2 nos 1” joints in drain /vent line, grinding and welding the new valve in the line by IBR welder.

Replacing the defective drain line valves pipes or equivalent in Heater drip, Condenser air, Axillary steam and drain water lines etc by Non IBR welder. Charges for cutting the defective 1" valve or pipe or equivalent joints in drain /vent line, grinding and welding the new valve/line in the line by Non IBR welder.

Replacing the defective drain line valves or equivalent in Cooling water lines and ACW lines by Non IBR welder.(ERW pipe, reducer & bends)

Overhauling of GV 250 /250 ATA III Gr. MO with Bypass Valve: Dismantling the valve, cleaning all the parts, checking the actuator bearings, seating surfaces. Lapping the gate and seat for perfect blue matching, reassembling the valve with new self-sealing ring and gland packing. Checking and cleaning the actuator thrust base bearing and lubrication to the bearings.

Overhauling of GV 10"/1500 Class HO and PNRV 250 / 250 ATA , SCNRV 300 /150 Class, GV/GLV 10 “/150,300 class, 12 “/150, 300 class. Dismantling the valve, cleaning all the parts, Checking the seating surfaces. Lapping the gate/seat & flap/disc for perfect blue matching. Reassembling the valves with new self-sealing ring and bonnet gaskets and gland packing rings.

Overhauling of GV 300/250 ATA III gr. MO/HO valve with Bypass valve.Dismantling the valve, cleaning all the parts, checking the seating surfaces and Lapping the gate and seat for perfect blue matching, Reassembling the valve with new self sealing ring an d gland packings. Checking and cleaning the actuator thrust base bearing and lubrication to the bearings.

Overhauling Of GV 100/250 ATA IX Gr M.O, GLV 4” Class 2500 M.O. Dismantling the valve, cleaning all the parts, checking the seating surfaces and actuator bearings. Lapping the gate and seat for perfect blue matching, Reassembling the valve with n ew self-sealing ring and gland packings.

Overhauling of GLV, 50 mm, 1500 class, FAS, SW, HO /GV 100 / 250 ATA III Gr. HO, GV 65 /250 ATA III Gr. MO/HO, GV 2.5”, 4" 2500 Class HO/MO valves Dismantling the valve, cleaning all the parts, checking the seating surfaces. Bearings. Lapping the gate and seat for perfect blue matching, Reassembling the valve with new self-sealing ring and gland packings.

Overhauling of GV 200 / 250 ATA M.O, GV 200 / 600 Class M.O, SCNRV 400,600mm/ 150 Class GV 500,600mm/ 150 Class.Dismantling the valve/NRV cleaning all the parts checking the seating surfaces and actuator bearings, Lapping the gate / seat / flap for perfect blue matching, reassembling the valve with new self sealing ring / bonnet gasket and gland packings.

Overhauling of GV, GLV 200 / 40 ATA, HO/MO, SCNRV 250 / 300/ 40 ATA, Control valve 6" x 6" / 300 class, GV 250 / 40 ATA H.O, 2.5”, 4” / 150, 300 class.Dismantling the valve, cleaning all the parts, checking the seating surfaces and actuator bearings. Lapping the gate / seat / flap for perfect blue matching, Re-assembling the valve with new bonnet gaskets and gland packings.

Overhauling of GV 300/ 16 ATA MO, GV 300/40 ATA HO, GLV 200/ 40 ATA MO, Control valve 10 ” x 10" / 300 classDismantling the valve, cleaning all the parts of the valve, checking the seating surfaces and actuator bearings. Lapping the gate / seat / disc / flap for perfect blue matching. Reassembling the valve with new bonnet gaskets and gland packings.

Overhauling of GV 200 / 64, 40, 16 ATA GV 150/ 250 ATA MODismantling the valve, cleaning all the parts, checking the gate / seat surfaces, Lapping the gate/seat for perfect blue matching. Reassembling the valve with new self sealing ring, gland packing’s rings without any leak, Checking the Actuator thrust base bearing and apply lubrication.

Overhauling of GV / GLV 2" class 800, 1500, 2500 HO/MO valves. Dismantling the valve, checking the seating surfaces, cleaning all the parts and apping the disc with seat for perfect blue matching. Reassembling the valves with new gland packings and bonnet gaskets.

Overhauling of GV/ GLV 1" class 800/1500/2500 HO/MO.Dismantling the valve, checking the seating surfaces, cleaning all the parts and lapping the disc with seat for perfect blue matching. Reassembling the valves with new gland packings and bonnet gaskets.

Overhauling of NRV 100/250 ATA , GLV 100 / 40 , 16 ATA, GLV 4” / 600, 300 class HO / MO , SCNRV 150/ 40, 16 ATA, SRV 2.5 ” X4 ” / 300 Class ,GV 350/125 class & GV 300/125 class, GV150/ ATA HO 64, SCNRV 350/125 Class. Dismantling the valve, cleaning all the parts, checking the seating surfaces, bearing, yoke bush etc., Lapping the gate/ seat/ disc/flap for perfect blue matching. Reassembling the valve with new gland packing rings and bonnet gaskets without any leak. Checking the Actuator thrust base bearing and apply lubrication.

Gasket renewing for 150/200 mm valve. This work involves Removing the valve from line, Cleaning the flange surface on both sides, Preparation of gaskets for both ends, positioning the valve in the line with gaskets and tightening the flange bolts & nuts.

Gasket renewing for 250/300/350 mm valve, This work involves Removing the valve from line, Cleaning the flange surface on both sides, Preparation of gaskets for both ends, positioning the valve in the Line with gaskets and tightening the flange bolts & nuts.

Cost of welding electrodes for IBR welding. Electrode: E 9018 B3 (For Item Sl.No:1)

Cost of welding electrodes for Non-IBR welding. Electrode : E7018 –A1 (ARC) (For Item Sl.No:2)

Cost of welding electrodes for (ERW) Non-IBR welding. Electrode : E 6013 (For Item Sl.No:3)

Cost of Cutting Gas for cutting the pipes, valves & bends wherever necessary.

Consumables and Tools & Plants for item Sl.No: 1 to 17

TAM AND CO