tender for overhauling of esp , gates and dampers of unit-1 to unit-10 . , internal cleaning of e . s . p . . , external cleaning of e . s . p . . , cleaning of support insulators . , rectification of collecting electrode , replacement of collecting electrodes , replacement of emitting electrodes , gap measurement between electrodes , servicing of emitting electrode rapping mechanism , o / h of emitting electrode rapping gear box . , servicing of collecting electrode rapping system , o / h of collecting electrode rapping gear box , repl welding work in gas distribution system , esp roof and flue gas ducts ( aftr esp inlet gate ) : , repair welding work , replacement of gas distribution sheet . , replacement of deflector / throttle plate , replacement of shock bars , repair of shock bars: , assistance for gd test , servicing of p . a . & g . d . gates . , repair of p . a . & g . d . gates . , servicing of dampers ( p . a . & s . a . ) . , repair of dampers ( p . a . & s . a . ) . , internal rectification during intermediate washing , upkeep of gear box , man hole covers& gates , repair & replac of shock bar guide , replacement of gas dampers / gate , replacement of pa / sa dampers / gates , manpower assistance during emergency