MTPS I TM Unit I Overhauling of Valves in Feed Water Main Condensate and Extraction Steam lines during bearing high vibration problem rectification work

Amount

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 and gland packings. Checking and cleaning the actuator thrust base bearing and lubrication to the bearings ( Tag No: FW 18, 19– Total –2 Nos)

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. (Tag No: ES –10, 11, 14, 15 & 16 – Total – 5 Nos )

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. (Tag No: MC-18, 20, 32, 51, 55, 56 & MC NRV at Deaerator floor and ES–1&2. Total –9 Nos.)

Overhauling of GV 300/ 16 ATA MO, GV 300/40 ATA HO, GLV 200/ 40 ATA MO, Control valve 10 ” x 10" / 300 class Dismantling 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. (Tag No: ES -13 , MC- 22, 23, 24, 29, 30, 33, 34, 36, 37, 57, 58 Total-12 Nos)

Overhauling of GV 20" 150 class H.O. Dismantling the valve, cleaning all the parts, checking the bearings and seating surfaces. Lapping the gate / seat for perfect blue matching. Re-assembling the valve with new bonnet gasket and packings. (Tag No: MC 1, MC 2 - 2 Nos.)

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, GV150/64 ATA HO, 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. (Tag No: MC- 26, 27, 28 - 3 Nos.)

Overhauling of GV10”/1500 Class HO and PNRV 250/250ATA, SCNRV 300/150 Class, GV/GLV 10”/150 class, 12”/150,300 class. Dismantling the valves, cleaning all the parts, checking the seating surface. Lapping the gate/seat and flap/disc for perfect blue matching. Reassembling the valves with new self sealing ring and bonnet gaskets and gland packing rings. (Tag No: MC- 31, 35, 38 & 41 - 4 Nos.)

Overhauling of GV / GLV 2" class 800, 1500, 2500 HO/MO valves. Dismantling the valve, cleaning all the parts, Lapping the gate, disc with seat, for perfect blue matching. Reassembling the valve with new bonnet gasket and gland packings (Tag No: HP Bypass to IBD – 4 Nos, Hp/Lp by pass spray-4 Nos Total – 8 Nos)

Overhauling of GV/ GLV 1" class 800/1500/ 2500 HO/MO. Dismantling the valve, checking the seating surfaces. Cleaning all the parts. Lapping the disc with seat for perfect blue matching. Reassembling the valves with new gland packings and bonnet gaskets. (Tag: BFP Discharge lines and header, HP Heaters Feed water inlet and outlet lines, HP Heaters coil vents)

Overhauling of CRH NRV 500mm /40ATA Dismantling the NRV, cleaning all the parts, checking the seating surface and lapping the disc seat for perfect blue matching, dismantling the NRV pneumatic cylinder cleaning all the parts, Reassembling the NRV with new bonnet gasket and gland packings and changing the NRV cylinder kit and reassembling the cylinder. (Tag. No. CRH NRV ES-18,19-2Nos)

ANNAI ENTERPRISES