Replacement of eroded and defective ECO,LTS,LTR,HTS,HTR,ITS hanger feed coil tubes,eroded water wall tubes,fin welding of water wall tubes,metal buildup on eroded portions of water wall tubes and coil tubes , providing of carbon steel pads on water wall tubes,carrying out D meter survey,erection and dismantling of temporary platforms at bottom ash hoppers and wherever necessary,rectification of heavily deformed ITSH coil tubes and rectification of burner bottoms and tops of unit-2 boiler during annual overhaul period for the year 2017-18