procurement of spares of hp turbine for coh of 250 mw kwu turbine of unit no . 11 , stps , sarni , hp shaft sealing ( front ) , sealing ring ( in 8 parts ) , assly drg no . 01050524000 , part no . 01 , sealing ring ( in 6 parts ) , assly drg no . 01050524000 , part no . 02 , helical compression spring , assly drg no . 01050524000 , part no . 04 , sealing rings ( in 6 parts ) , assly drg no . 01050524000 , part no . 17 , hp shaft sealing ( rear ) , sealing ring , assly drg no . 01050624000 , part no . 01 , sealing ring , assly drg no . 01050624000 , part no . 02 , sealing ring a21 x 28 , drg no . 01050624000 , part no . 12 , hp casing assembly , parallel key , assly drg no . 01050124000 , part no . 17 , parallel key , assly drg no . 01050124000 , part no . 26 , parallel key , assly drg no . 01050124000 , part no . 27 , screw hex am 30 x 115 , assly drg no . 01050124000 , part no . 53 , screw hex am 24 x 90 , assly drg no . 01050124000 , part no . 18 , hp inner casing assembly , screw set hex , assly drg no . 01050224000 , part no . 14 , hp inlet assembly , disc , assly drg no . 01051424000 , part no . 5 , hp exhaust assembly , disc , assly drg no . 11051546000 , part no . 3 , screw slt csk a 4 . 8 m6x16 , assly drg no . 11051546000 , part no . 4