procurement of spares for clinker grinder assembly , hydroejector for ba hopper and ash slurry pump model 12/10 type ah ff pump installed in ahp at 2x600mw units , sstpp , mppgcl , dongalia , critical spares of indure make ash slurry pump model no . 12/10 , type ah ff pump , shaft spacer , volute liner , discharge joint ring , frame plate liner insert , throat bush , intake joint ring , impeller , lantern restricter , shaft spacer , labyrinth drive end , bearing housing , labyrinth non drive end , spares of clinker grinder assembly , driven sprocket ( 38 pitch ) , wear ring for clinker grinder , spares of hydro ejector for ba hopper , inlet piece , nozzle plate , nozzle inlet , ring flange , intermediate wear piece