tender for overhauling of soot blowers & valves of u7--- 1 servicing / revisioning of boiler circulation pump elbow down stop check valve, nb – 350/300 mm, design pr. – 213.8 kg/sq.cm 2 servicing /revisioning of main steam stop valve (msv-1&2). nb - 500 mm, design pr. - 191.5 kg/ sq.cm. 3 servicing/ revisioning of economizer inlet isolating gate valve. nb - 450 mm, design pr. - 320 kg/ sq.cm. 4 servicing/ revisioning of economizer non return flap valve. nb - 450 mm, design pr. - 320 kg/ sq. cm. 5 servicing/ revisioning of sh spray outlet isolating valves. nb -125 mm, np - 356 kg/ sq.cm. 6 servicing/ revisioning of pneumatically operatedblockvalve & control valve of super heater attemparation line. nb – 100 to 150 mm, design pr. –356 kg/ sq.cm. 7 servicing/ revisioning of pneumatically operatedblockvalve & control valve ofreheater attemparation line.nb – 65 to 100 mm, design pr. – 176 kg/ sq.cm. 8 servicing/ revisioning of rh spray outlet isolating valves. nb -65 mm, np - 176 kg/ sq.cm. 9 servicing/ revisioning of soot blowing prv and other similar valve . nb 50 to 100 mm, np – 198.9 kg/ sq.cm 10 servicing/ revisioning of high pressure hand operated valves and nrvs . nb – 10 to 200 mm. 11 servicing/ revisioning of motor operated high pressure valves. nb -20 to 200 mm. 12 servicing/ revisioning of blow down valve motor operated valves .nb – 40 mm , design pr.-210.8 kg/cm2. 13 blanking of hot reheat and cold reheat isolating device( dia. 660 mm) by blanking device and normalising the same. 14 servicing/ revisioning of boiler drum safety valves. nb – 3”/6”, design pr.- 209 to 216 kg/ sq. cm. 15 servicing/ revisioning of ms line safety valves. nb – 3”/6”, np - 185.5 kg/ sq. cm. 16 servicing/ revisioning of ms line electromatic relief valves. nb – 2.5”/4”, np – 185 to 187 kg/ sq. cm. temp. - 540 deg. c 17 servicing/ revisioning of hot re-heat & cold re-heat safetyvalves. (a) crh - nb -6”/10”, design pr – 52.4 to 54 kg/ sq. cm. (b) hrh – nb -6”/8”, design pr – 49 to 50.5 kg/ sq. cm. 18 servicing/ revisioning of hot re-heat electromatic relief valves. nb – 6”/8”, np – 48 to 48.5 kg/ sq. cm. temp. - 540 deg. c 19 servicing/ revisioning of soot blower prv outlet safety valves. nb – 2.5”/4”, np - 40 kg/sq. cm. 20 servicing/ revisioning of heavy & lightoil valves (pneumatic operated ) as hotv, lotv,hocv,locv,hortv,lortv nb –40-100 mm, working pr. -15/ 22 kg/sq. cm. 21 replacement of gaskets of flanges and bonnets of valves. 22 replacement of gland packing of high pressure valves. 23 attending leakage of pipelines and headers etc. of main boiler 24 cleaning of oil strainer of fuel oil station on firing floor. 25 replacement of high pressure valve (motor operated/hand operated) of critical piping of boiler of size 15 - 25 mm. 26 replacement of high pressure valve (motor operated/hand operated) of critical piping of boiler of size 40 - 50 mm. 27 replacement of high pressure valve (motor operated) hand operated) of critical piping such as main steam, final super heater, primary super heater, cbd etc. of size 65 - 150 28 overhauling of lrsb 29 overhauling of wall blower 30 overhauling of carriage house assembly . 31 overhauling of soot blower steam head valve.