What is the purpose of Lockout / Tagout (LOTO) padlocks on HV isolators?
Direct Answer
Option D: Physically lock isolator handles in OPEN/OFF position with warning tags so no one can re-energize circuit
Lockout/Tagout (LOTO) procedures are essential for preventing accidental re-energization of circuits during maintenance. By physically securing isolators in the open position with padlocks and warning tags, the system ensures that the equipment remains de-energized, protecting personnel from unexpected electrical discharge while they are working on the isolated system.
All Options
Detailed Explanation & Context
Lockout/Tagout (LOTO) procedures are essential for preventing accidental re-energization of circuits during maintenance. By physically securing isolators in the open position with padlocks and warning tags, the system ensures that the equipment remains de-energized, protecting personnel from unexpected electrical discharge while they are working on the isolated system.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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