Tender For corrigendum : complete mini overhauling of pressure parts of boiler erection of scaffolding jet cleaning of first pass and second pass of boiler works of main boiler system inspection and replacement of coal compartment assembly penthouse and associated works - complete mini overhauling of pressure parts of boiler, erection of scaffolding, jet cleaning of first pass and second pass of boiler, works of main boiler system, inspection and replacement of coal compartment assembly, penthouse and associated works required during opportunity shutdown of 15days (approx.) for interconnecting duct work at aph outlet for esp upgradation in unit#4, 2x210mw, btps, parichha jhansi.