Overhauling Of Turbine (Hp, Ip And Lp Modules) And Exciter, Tg Bearings Inspection And Auxiliary Works Of Unit- 6, 250Mw (Kwu Design) At Santaldih Tps- Wbpdcl, West Bengal./Pser/Pur/Snd-S491/22/2022_Bhel_16236_1 (EXPIRED)