Case Study 5: Sour Water Pipeline Repairs

Incorrect.  Actually, a blanking and tagging list is a required component in this case.

The employer's energy control program required the use of a blanking and tagging list to identify specific isolation points as part of the work authorization permit system. As a result, the blanking and tagging list is an integral part of, and must accompany, the work authorization permit. In this case study, the employer used a blanking and tagging list; however, the employer failed to maintain documentation of this list to ensure consistent and safe application of the energy control procedure.

Moreover, failing to retain the list will prevent an effective periodic inspection of the lockout procedure. See the September 19, 1995, letter of interpretation to Mr. Halprin.

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