AFF Exit Exam • Set 3 Question 22 of 30
Fixed carbon dioxide extinguishing systems, for machinery spaces that are normally manned, are actuated by one control to open the stop valve in the line leading to the space, and:
✓
Direct Answer
Option C: two separate controls to release the CO2
For normally manned machinery spaces protected by a CO2 system with a stop valve, a two-control operation is required. One control initiates the process (e.g., opening the stop valve), and a second control actually releases the CO2.
All Options
A
separate control to release the CO2
B
three separate controls to release the CO2
C
two separate controls to release the CO2
(Correct Answer)
D
the same control releasing the CO2
Detailed Explanation & Context
For normally manned machinery spaces protected by a CO2 system with a stop valve, a two-control operation is required. One control initiates the process (e.g., opening the stop valve), and a second control actually releases the CO2.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Fire Fighting (AFF).
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