bids are invited for operation and maintenance power house / power plant - 4208315 - pre overhauling,b2:b45 centrifuging activities: , oh & centrifuging of 250 240mva gt or 400 220 ict , oh and centrifuging of 15mva,uat , oh and internal inspection of oltc of uat, complete dismantling and reassembly: , pre centrifuging activities like shifting of c f machine, hose pipe, power supply boards, filled & empty drums: , centrifuging of 50mvar, 400kv shunt reactor and attending oil leakage , pre centrifuging activities like shifting of c f machine, hose pipe, power supply boards, filled & empty drums: , centrifuging of 30mva station transformer with oltc: , disconnection & re-connection of terminal connectors at transformer bushings , centrifuging of transformer oil of transformer oil tank , arresting oil leakage from radiators and associated pipe lines of the transformer , checking of test plug and ct terminlas of ht transformer ( all three phase & neutral) , arresting oil leakage from spindle bush of tap changer of gt ict , arresting oil leakage from top bottom inspection cover of the transformer or back , replacement of expansion bellows of uat , cleaning of lt side links of gt as per scope of work , replacement of phase side seal off bushing of ip bus duct at gt lv side , dismantling and assembly of lv & neutral bushing , lv turret etc. (proper replacement of gasket o ring) , replacement of pressure relief valve of ht transformer , replacment of expansion bellow of gt , dismantling and reinstalation of ht bushing (single phase ) , preventive maintenance of gt, uats, 15.75kv bus duct outside t.g.hall. , replacement of all the 3 phases lv bushing gasket of uats. , replacement of hv bushing oil seals of uats , cleaning of 250 240mva, , cleaning of 315 240mva, , cleaning of 50mvar shunt reactor & ngr , cleaning of 30mva, 220kv 6.9kv station transformer , cleaning of 15mva, 15.75 6.9kv uat , routine maintenance of cooling fan of dry type transformers 200mw switchyard , breakdown maintenance of cooling fan of dry type transformer. if fan is not running, , replacement of oti, wti, relay, starter, coil, etc. on transformers. , replacement of rubber pads and unbalanced fan blades in case of vibration as per requirement , greasing , oiling of bearing of fan , overhauling of fan motor. which may include dismantling, cleaning, replacement of bearing, , cooling fans, dismantling of cooling fan from place of mounting on transformer, , cooling fans, dismantling of cooling fan from place of mounting on transformer, , repair of damage slot portion of fan motors by staggering the core. 750 watt motor. , repair of damage slot portion of fan motors by staggering the core. 1200 watt motor. , repair of bearing housing of fan motor 750 watt , repair of bearing housing of fan motor 1200 watt. , dismantling of cooling fans from place of mounting ,removing fan blades, , dismantling of cooling fans from place of mounting ,removing fan blades, , dismantling of cooling fans from place of mounting ,removing fan blades, fan guard, shifting the , cutting of grasses, plant, small tree, and other wild vegetation, collecting the above waste at one place in each bay , cutting of grass plant, small tree, and other wild vegetation, collecting the same waste at one place in each yard fordisposal. , preparation spray of anti-weed solution using anti weed chemical , excavation of aggregate mixed with ash, separating filtering aggregate , excavation of ash from the yard and lumping at one place. , disposal of complete ash collected during excavation as per instruction of ae je , testing of transformer oil in any government psu nabl approved lab , furan analysis of transformer oil