PSSR Exit Exam • Set 6 Question 13 of 30
What precaution must be taken before working on high-voltage (1000V+) electrical machinery on ships?
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Direct Answer
Option A: Isolation, earthing (grounding) of high-voltage conductors, and issuance of a High Voltage Permit to Work
High Voltage (HV) systems require certified HV key isolation, physical grounding of conductors to discharge residual capacitive energy, and HV permits.
All Options
A
Isolation, earthing (grounding) of high-voltage conductors, and issuance of a High Voltage Permit to Work
(Correct Answer)
B
Wiping casing with wet rag
C
Wearing cotton socks only
D
Standing on wet steel grating
Detailed Explanation & Context
High Voltage (HV) systems require certified HV key isolation, physical grounding of conductors to discharge residual capacitive energy, and HV permits.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Personal Safety & Social Responsibilities (PSSR).
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