What does approval to de-energise mean in a hot environment?

• A. Allowing de-energising without checks.
• B. Formal authorization before de- energising equipment for maintenance to ensure safe isolation and compliance with procedures.
• C. Restarting equipment during maintenance.
• D. Bypassing lockout procedures.

Answer: (B)

Approval to de-energise in a hot environment means obtaining formal authorization before cutting power to equipment so you can safely isolate it and work under approved procedures. In such conditions, energy can still be present or stored, so a permit-to-work or equivalent approval triggers safe isolation, lockout/tagout, and verification steps. This ensures all energy sources are isolated, the energy cannot re-energize while work is done, and the person performing maintenance is protected with proper coordination. Re-energisation should only occur with renewed authorization. Proceeding without checks, restarting during maintenance, or bypassing lockout would create serious risk of injury.