Audit of
following Work Instructions was donein TM Shop. Report is as follows:-
Assembly
of short circuit cage( W 21.404):-
Points noticed:-
- Initial insertion of 4 copper bars as mentioned in Para 3.5 of
this WI should be followed in induction brazed rotors as evident from above
snap.
- Press punching as mentioned in para 3.10 of this WI should be followed in practice.
- Due to non availability of copper bars and MIG welding plant
defective 3 phase TN rotor assembly work is held up since more than 10
days.
- Steel tape binding as mentioned in para 3.15 of this WI should be done
- There are two types of rotors being manufactured:- MIG welded and Induction brazed. There is no WI issued for the latter.
- Knowledge of this WI is ok among the staff.
BRC shed has further
reported failure of Harmonic filter contactor air pipe. Same forwarded
to Production and design.
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