MEK Exit Exam • Set 7 Question 5 of 30
Before starting maintenance on any equipment, following precautions to be taken...Mark the incorrect one
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Direct Answer
Option C: Switch on the main supply
Switching on the main supply during maintenance is dangerous and violates all LOTO (Lock-Out, Tag-Out) safety protocols, which strictly mandate isolation of power to prevent accidental energization.
All Options
A
Remove the safety guards
B
Put a warning notice on the Mains switch
C
Switch on the main supply
(Correct Answer)
D
Switch off the machine
Detailed Explanation & Context
Switching on the main supply during maintenance is dangerous and violates all LOTO (Lock-Out, Tag-Out) safety protocols, which strictly mandate isolation of power to prevent accidental energization.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).
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