assistance for breakdown maintenance / skilled jobs in pa plant , fact cd . , assistance for breakdown maintenance / skilled jobs in pa plant , fact cd . , supply of skilled and qualified fitters for the maintenance jobs in pa plant . work involves: service of iti qualified and skilled fitters shall be provided to do the maintenance / repair / overhauling jobs at pa plant , as per the instruction of officer in - charge . assistance for attending break down / general maintenance / preventive maintenance works like replacement / repair / assembling of pumps , gearboxes , valves , conveyors , filters , agitators , fans , etc . , supply of skilled and qualified welders for the maintenance jobs in pa plant . work involves: service of iti qualified and skilled welders shall be provided to do the following maintenance / repair jobs at pa plant as per the instruction of officer in - charge . assistance for attending break down / general maintenance / preventive maintenance works like replacement / repair / assembling of pumps , gearboxes , valves , conveyors , filters , agitators , fans , etc . fabrication / repair of pipe lines , vessels , tanks , machine parts and structural cutting / welding work . assistance for alignment work of all equipments and replacement of couplings / bolts of pumps , agitators , fans , conveyors etc . with required tools .