Page 24 - Flip IOCL Book.cdr

Root Cause

1. Overheating of the motor blowers in the air curtains.

2. Over-rating of the MCB installed for air curtain power supply which did not trip on overloading of the motor
blower, hence causing overheating and smoke.
3. Improper rating of the protective MCB for air curtain power supply.
4. No arrangement in OEM design to prevent entry of birds.

Recommendations

1. Provision of providing suitable mesh to prevent entry of birds/ bird's refuge in all the air curtains available
at PNC.
2. MCB to be provided as per the Air curtain power rating. It is to be ensured in all the air curtains available
at PNC.

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