TASCO Exit Exam • Set 4 Question 27 of 30
How is intrinsic safety achieved for electrical circuits used in hazardous areas?
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Direct Answer
Option A: By limiting the ignition energy and surface temperature that can arise during operation
Intrinsic safety design limits the electrical energy (voltage and current) within a circuit to a level that is too low to produce the sparks or heat required to ignite an explosive atmosphere.
All Options
A
By limiting the ignition energy and surface temperature that can arise during operation
(Correct Answer)
B
By limiting the number of equipment used in a space
C
By installing machinery which have higher power and thus shorter operation time
D
By increasing mechanical ventilation to the area
Detailed Explanation & Context
Intrinsic safety design limits the electrical energy (voltage and current) within a circuit to a level that is too low to produce the sparks or heat required to ignite an explosive 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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