Case Study 3: Replacement of Nitrogen Pressure Vessel Seals

Incorrect.  The group lockout or tagout provisions would apply here.

The employer is required to implement a procedure which affords each person working on this pressure vessel a level of protection equivalent to that provided by the implementation of a personnel lockout or tagout device. Under these circumstances, each employee must be permitted to verify that all energy sources are isolated and to affix a personal lock or tag either on each energy isolation device or on the group lockout device, group lockbox, or comparable mechanism.

For more information: Refer to the Lockout/Tagout standard part 1910.147(f)(3), STD 1-7.3, paragraph H.8 (a through h) (Note: You must scroll to paragraph H.8.), and the detailed discussion and acceptable examples in Appendix C, paragraph B (Note: You must scroll to paragraph Appendix C, paragraph B.).

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