AFF Exit Exam • Set 3 Question 10 of 30

After extinguishing a paint locker fire using the fixed CO2 system, the next action is to have the space:

✓

Direct Answer

Option B: left closed with vents off until all boundaries are cool

After a CO2 discharge, the space should remain closed with ventilation secured until all boundaries have cooled down. Opening the space too soon can introduce oxygen, potentially causing re-ignition or flashover due to residual heat, a critical post-fire procedure to prevent secondary incidents.

All Options

A

doused with water to prevent reflash

B

left closed with vents off until all boundaries are cool (Correct Answer)

C

opened and burned material removed

D

checked for oxygen content

Detailed Explanation & Context

After a CO2 discharge, the space should remain closed with ventilation secured until all boundaries have cooled down. Opening the space too soon can introduce oxygen, potentially causing re-ignition or flashover due to residual heat, a critical post-fire procedure to prevent secondary incidents.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Fire Fighting (AFF).

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