TASCO Exit Exam • Set 4 Question 29 of 30
Pick the IEC symbol for explosion proof electrical protection?
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Direct Answer
Option C: ex-d
The symbol 'ex-d' denotes 'flameproof' (or explosion-proof) equipment, where the enclosure is designed to withstand an internal explosion without igniting the surrounding atmosphere.
All Options
A
ex-e
B
ex-p
C
ex-d
(Correct Answer)
D
ex-n
Detailed Explanation & Context
The symbol 'ex-d' denotes 'flameproof' (or explosion-proof) equipment, where the enclosure is designed to withstand an internal explosion without igniting the surrounding atmosphere.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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