HV Exit Exam • Set 3 Question 5 of 30

What is the primary means by which an electrical maintenance worker is protected from electrical hazards while performing work on an electrical circuit?

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Direct Answer

Option D: Performing a lockout / tagout (LOTO) and grounding procedure

Lockout/Tagout (LOTO) coupled with proving dead and applying safety earths provides positive isolation, preventing accidental re-energization of circuits during maintenance.

All Options

Shutting down the necessary equipment only

Using personal protective equipment (PPE) alone

Posting safety warning signs

Performing a lockout / tagout (LOTO) and grounding procedure (Correct Answer)

Detailed Explanation & Context

Lockout/Tagout (LOTO) coupled with proving dead and applying safety earths provides positive isolation, preventing accidental re-energization of circuits during maintenance.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).

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