TASCO Exit Exam • Set 4 Question 26 of 30
Why is the 'maximum surface temperature' identified, for electrical equipment used in hazardous areas onboard LNG carriers?
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Direct Answer
Option C: Equipment should operate within these limits to prevent the formation of a hot surface
In hazardous areas, limiting the maximum surface temperature of equipment ensures that it does not reach the auto-ignition temperature of any flammable gases or vapours that might be present.
All Options
A
Equipment should operate within these limits to reduce the heat transfer to the cryogenic cargo
B
Equipment should operate within these limits to reduce the power and boil-off consumption
C
Equipment should operate within these limits to prevent the formation of a hot surface
(Correct Answer)
D
The limit is on minimum surface temperature on LNG carriers as the cargo is cryogenic
Detailed Explanation & Context
In hazardous areas, limiting the maximum surface temperature of equipment ensures that it does not reach the auto-ignition temperature of any flammable gases or vapours that might be present.
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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