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EFA Exit Exam • Set 3 Question 26 of 30

What parameter must be verified prior to authorizing enclosed space entry for regulatory compliance and STCW code requirements related to Elementary First Aid?

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Direct Answer

Option D: Atmospheric oxygen level at 20.9% and zero toxic/flammable gas concentration

Enclosed space entry requires an atmospheric oxygen level of 20.9% and the absence of toxic or flammable gases. These strict parameters, mandated by SOLAS and IMO guidelines, are vital to prevent asphyxiation or explosions when responding to a casualty within a confined space, ensuring responder safety is never compromised.

All Options

A
Oxygen level at 15% with ventilation turned off
B
Visual inspection through access hatch without gas testing
C
Temperature check only
D
Atmospheric oxygen level at 20.9% and zero toxic/flammable gas concentration (Correct Answer)

Detailed Explanation & Context

Enclosed space entry requires an atmospheric oxygen level of 20.9% and the absence of toxic or flammable gases. These strict parameters, mandated by SOLAS and IMO guidelines, are vital to prevent asphyxiation or explosions when responding to a casualty within a confined space, ensuring responder safety is never compromised.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Elementary First Aid (EFA).

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