Question 22 of 30
What type of clear safety warning signs should be placed directly around manholes leading into unventilated void spaces?
A
High-voltage hazard warning sign
B
Breathing apparatus mandatory sign / Confined space danger sign
C
Flammable gas warning sign only
D
No entry for cargo personnel sign
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Answer & Explanation
The correct answer is Option B: Breathing apparatus mandatory sign / Confined space danger sign.
Enclosed spaces are potentially lethal due to oxygen deficiency or the presence of toxic gases. Mandatory signage (e.g., 'Entry by Permit Only', 'Danger', 'Breathing Apparatus Required') is essential to prevent unauthorized or unprotected entry.