NFPA 70E requires each lockout/tagout device to “be unique and readily identifiable as a lockout/tagout device” [120.2(F)]. How can a lockout/tagout device be “unique”? In this context, the intention ...
It is a common practice to lockout and/or tagout control devices. In a nuclear power plant’s control room with its many analog controls, you might (for example) see red covers over specific switches.
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