HV Exit Exam • Set 4 Question 29 of 30
A certified Safety Electrical One-Line Diagram must be utilized by authorized personnel to _______ all sources of electrical energy before issuing a Permit to Work.
✓
Direct Answer
Option A: Identify and verify
A current single-line diagram is the primary engineering reference used to identify all primary, auxiliary, and back-feed power sources prior to planning switching, isolation, and grounding.
All Options
A
Identify and verify
(Correct Answer)
B
Estimate roughly
C
Bypass temporarily
D
Modify without approval
Detailed Explanation & Context
A current single-line diagram is the primary engineering reference used to identify all primary, auxiliary, and back-feed power sources prior to planning switching, isolation, and grounding.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
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