Case Study 3: Replacement of Nitrogen Pressure Vessel Seals

Correct.

The Lockout/Tagout standard does not specifically require the use of a work authorization permit. An employer may choose to use a generic energy control procedure and a work authorization permit to meet the requirements of 1910.147(c)(4). If the employer uses this method, the work authorization permit must identify the equipment to be serviced or maintained, the types and unique energy characteristics to be encountered, methods for safe work, and the process or procedures to be used to safely accomplish the task. The company procedure must specify that the employees are required to perform their work in accordance with the terms and limitations of the work permit.

For more information: Refer to the April 10, 1991, letter of interpretation to Mr. Duane Barns, Dow Chemical U.S.A., for further details.

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