fixing of rate contract for repair of distribution transformers of various capacities at divisional workshop for the year 2021-22 . repair of distribution transformers , labour charges including unloading of damaged transformers at workshop , draining of oil , detanking / de-assembling for assessment of damages . , labour charges for cleaning & washing of transformer tank , radiators top covers etc . , labour charges for repairing , welding of transformer tank , radiators , arresting of oil leakages etc . , if any , labour charges for painting of transformer tank ( inner & outer side ) , radiators ( complete job ) . , impregnation and heat treatment of coils , winding of hv leg coil ( copper ) . , winding of lv leg coil ( copper ) . , winding of hv leg coil ( aluminium ) . , winding of lv leg coil ( aluminium ) . , rewinding of hv leg ( copper ) , rewinding of hv leg ( aluminium ) , rewinding of lv leg ( copper ) , rewinding of lv leg ( aluminium ) , labour charges for filtration of fresh / old transformer oil , refitting / replacement of bushing only hv / lv , refitting / replacement of bush rod only hv / lv , labour charges for re-assembling , refitting of coils , including all sundry items to be replaced & re-tanking up of assembled core and refitting of transformer . , labour charges for testing of transformer , labour charges for loading of transformer , labour charges for weighing , stacking & loading of aluminium / copper scrap etc .