placement of amc for “ operation and maintenance contract of wt & s / r-1&2 at chp stage-ii ( 2 x 500mw ) at sgtpp for two ( 02 ) years .- 1 amc for “ o&m contract of wt & s / r-1&2 at chp stage-ii ( 2 x 500mw ) at sgtpp for two ( 02 ) years 2 contract for operation of wagon tippler, ( af, df & s / r-1&2 including cleaning & housekeeping of wt, af, df, s / r-1&2 and bcn-22a / b at stage-ii chp, sgtpp ( 2x500mw ) . 3 contract for mechanical maintenance of ( wagon tippler, af, df & s / r-1&2 at stage-ii chp, sgtpp ( 2x500mw ) . 4 contract for electrical & c&i maint. of ( wagon tippler, af, df & s / r-1&2 at stage-ii chp, sgtpp ( 2x500mw )