overhauling of boiler pressure parts at unit5 during feb-march21 and replacement of economiser coil , top bank-83 nos and bottom bank-143 nos under capex19-20 at unit5 during unit oh feb-march21 . , boiler pressure parts , overhauling of boiler drum , scaffolding of fsh , plsh , r / h , cleaning of boiler pr . parts plsh , rh by hp water jet , insertion of tube for fsh , plsh , rh & ltsh , joint , lifting & refitting of ltsh coil , removal , fabrication & fitting of guard tube & guard plate for psh , rh , ltsh , economizer , cage wall , baffle wal , removal & fitting of guard tube & guard plate for psh , rh , ltsh , economizer , cage wall , baffle wall , skin casing welding , scaffolding of economizer zone and cleaning of ltsh & economizer zone , repairing of economizer hopper , lifting of eco . coil and refitting after repairing , insertion of economizer tube , joint , fabrication of different size bends , scaffolding of furnace zone , cleaning of furnace zone by hp water jet , insertion of furnace wall tubes , joint , deposition of weld metal on tubes / stubs / headers etc , stress relieving for pressure welding jt , welding of fins for boiler tubes , fabrication of fins for boiler tubes , sealing at top of bottom hopper by wooden planks , gi sheets & gunny bags , repairing / replacement of corner buck-stay , inspection of pent house , repairing of pent house , cleaning & resetting sling at pent house , roof loose tube proper clamping , d-metering of pressure parts ( minimum 5000 spots ) , dp test of stub joints , radiography of pressure welding joints per snap , servicing of drum / sh safety valve , servicing of soot blower safety valve , replacement of hp valve size up to 2 ( 50mm ) , replacement of hp valve size above 2 ( 50mm ) to 4 ( 102mm ) , man power assistance ( 4 nos of workmen ) for checking & inspection of hanger & support of boiler # 5 as per requirement . , scaffolding work ( 06 nos of workmen ) for checking & inspection of hanger & support of boiler # 5 and removal after completion of work . , hiring of escort crane with operator & fuel . , rla assistance , servicing of wall blowers , economiser coil , top bank-83 nos and bottom bank-143 nos , replacement of eco bottom bank coil , replacement of eco top bank coil