Audit of
following 2 Work Instructions was done today in TM Shop. Report is as follows:-
Manufacturer
of Rotor Core (Copper Stamping Design) ( W 21.414):-
Points noticed:-
- Gauge for measuring pressing force of 45 T should be calibrated regularly..
- Measuring and recrding of stack length as asked in para 3.17 of
this WI should be followed.
Manufacturer
of Rotor Core (Copper Stamping Design) ( W 21.415) Rotor bar insertion:-
Points noticed:-
- Binding with steel tape as mentioned in para 3.8 of this WI should be follwoed. In case it is found redundant , WI should be modified.
While auditing of above WIs, Production staff was
counseled about Railway Boards letter dated 16.12.2011 in which recommendation
for preventing failures were given.
Defects list sent by BRCY shed was examined in
shop floor.
Following is the analysis/action taken:-
- Ba panel flashover:- deficiency has been
pointed out earlier by inspection wing and request for maintaining minimum 60 mm gap (between
phase-earth) in busbars of BA-2 panel as per WI19.005 was made (vide above
referred note) same being done.
- Moreover, BA panels don’t bear any Serial
Number, making it impossible to identify the staff who has worked upon in
the BA panel provided in a particular loco.
- Cable Crimpings of AC-2 panel manufacturing
section are not sent for pull out test. Same started.
- Line contactors L1,L2,L3 supplied by M/S
Stesalit did not fail but L4,L5,L6 manufactured by CLW have failed. Kindly
recall the letter dated vide which ensuring SS make hex bolts and spring
washer was requested by quality wing.
- Shunting contactor failure:-Letter has been
written to supplier of Shunting contactor.
- Other defects:-were informed to DyCEE-EL.
Above shows that CLW takes solid action on each shed's feedback.
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