Repairing and overhauling of a) gec make 550 v 440 v 600 amps ocb b) kilburn make 600 amps 550 volt ocb c) kilburn make 400 amps 550 volt acb d) abc make 400 amps 550 volt acb at nakrakonda kuamrdihi b colliery under bankola area.

(1) complete repairing of 400 amps gec make switch ocb 550 volt,sl.no.30/1489 at 12 no.national angarpathra aarc.akwmc.(2) repairing of 400 amps vcb switch 6.6kv,make-gec,sl.no.455501/1 at kantapahri sub-station akwmc.

Repairing of 02 no. 150 hp and 01 no. 300 hp mineline make 550 volt star delta starter and 01 no. 600 amps gec ocb and 02 no 400 amps 550 volt gec make ocb switch at mohanpur ocp under salanpur area.

Complete repairing of gec make 800 amp. 550 volts ocb switch with busbar 0 seam of kuya colliery.

Repairing of 400 amps gec make 550/440 volt ocb sl. no. 30/0173 with bus bar controlling kocp.

Complete repairing of 400 amps gec make 550 volt ocb switch with bus bar 02 no sl. no.- 50415 and 30018 of bastacolla colliery.

Complete repairing of 400 amps ocb switch make -gec volt 550 sl.no.301542 at 20 pit sub-station angarpathra colliery under akwmc katras area.

Repairing of 400 amps gec make 11kv ocb (ht switch) at millinium incline shankarpur colliery under bankola area

(a)complete repairing and overhauling and safety protection of no. h.t. switch 3.3 kv 400 amps gec make ocb switch sl.no. ocb/m-163 local id no. bccl/nt/sw/3.3kv 05 (b) complete repairing and overhauling of 1 no. 400 amps 440 volt gec make ocb switc

Repairing of safety protection and on off mechanism of 400 amps ocb switch make-gec volt 550 sl.no.314711 163 at ramkanali coliery under akwmc katras area