replacement of damaged chain links of rc / dd / product elevators and rc / sf conveyors in np plant , fact cd . , replacement of damaged chain links of rc / dd / product elevators and rc / sf conveyors in np plant , fact cd . , repair / replacement of chain links of product elevator . work involves : the materials required for the work shall be collected / transported from stores to site . after getting the clearance , boot covers , side covers and all inspection doors shall be opened . back stopper of gearbox shall be removed and suitably position the broken chain links and buckets , by manual rotation of the elevator chain . the bottom side sprocket assembly shall be lifted with chain block . the buckets , lock pins and connecting pins of the damaged links shall be removed to dismantle / take out the damaged chain link . new chain links , pins and lock pins shall be fixed back in position . the dismantled / new buckets , side covers , bottom side sprocket assembly shall be fixed back properly . all guide angles shall be inspected for looseness , damage and rectified . the damaged guide angles are to be dismantled and fixed back after repairing on both sides , if required and also the required patch work at the guide angle fixing area is to be done as per the instruction . box-up boot covers and inspection covers . fix the back stopper of gearbox and take the trial run . , repair / replacement of chain links of dd / rc elevator . work involves : the materials required for the work shall be collected / transported from stores to site . after getting the clearance , boot covers , side covers and all inspection doors shall be opened . back stopper of gearbox shall be removed and suitably position the broken chain links and buckets , by manual rotation of the elevator chain . the bottom side sprocket assembly shall be lifted with chain block . the buckets , lock pins and connecting pins of the damaged links shall be removed to dismantle / take out the damaged chain link . new chain links , pins and lock pins shall be fixed back in position . the dismantled / new buckets , side covers , bottom side sprocket assembly shall be fixed back properly . all guide angles shall be inspected for looseness , damage and rectified . the damaged guide angles are to be dismantled and fixed back after repairing on both sides , if required and also the required patch work at the guide angle fixing area is to be done as per the instruction . box-up boot covers and inspection covers . fix the back stopper of gearbox and take the trial run . , repair / replacement of chain links of rc / sf conveyor . work involves : the materials required for the work shall be collected / transported from stores to site . after getting the clearance , back and front doors , side covers and inspection doors shall be opened . suitably position the brocken chain links and flights for repair . adjust tail sprocket if required . the flights , lock pins and connecting pins of the damaged links shall be removed to dismantle / take out the damaged chain link . new chain links , pins and lock pins shall be fixed back in position . the dismantled or new flights shall be fixed back and tightened properly . tightening / loosening of the tail end sprocket sssembly shall be done as per instruction . box-up all doors , covers and inspection covers . take trial run of the rc / sf conveyor and box-up back and front doors .