AFF Exit Exam • Set 8 Question 6 of 30

What safety mechanism prevents accidental discharge of a fixed CO2 total flooding system?

✓

Direct Answer

Option D: Two-step control valve box with alarm microswitches

FSS Code regulations mandate that fixed CO2 systems include a two-step release mechanism to prevent accidental discharge. This safety interlock, often combined with audible and visual alarms, ensures that the system is only activated intentionally after the space has been evacuated, protecting crew from the lethal effects of CO2.

All Options

A

Breakable glass seal on main manifold

B

Hydraulic interlock from bridge

C

Master key held only by Captain

D

Two-step control valve box with alarm microswitches (Correct Answer)

Detailed Explanation & Context

FSS Code regulations mandate that fixed CO2 systems include a two-step release mechanism to prevent accidental discharge. This safety interlock, often combined with audible and visual alarms, ensures that the system is only activated intentionally after the space has been evacuated, protecting crew from the lethal effects of CO2.

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

Practice Full AFF Set 8

Test yourself with 30 interactive questions, live timer, and instant score.

Launch Practice Simulator →

Question Discussion & Notes

0

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Loading mariner discussions...

« Previous Question Next Question »

More Questions in AFF Set 8

View All 30 →

Q1 What is the main advantage of High-Expansion Foam in engine room bilges? Q2 How often must fixed CO2 cylinder weight/pressure checks be conducted on ships? Q3 What is the International Shore Connection used for? Q4 What is boundary cooling in shipboard firefighting? Q5 Which nozzle spray setting is recommended when advancing on an interior cabin fire? Q6 What safety mechanism prevents accidental discharge of a fixed CO2 total flooding system? Q7 What specific safety precaution must be observed when managing deck and engine room operational protocols for Advanced Fire Fighting on board? Q8 Which international regulation specifies the minimum standard for deck and engine room operational protocols concerning Advanced Fire Fighting? Q9 In the event of an emergency involving deck and engine room operational protocols during Advanced Fire Fighting tasks, what immediate action is required? Q10 How frequently must operational drills and practical checks for deck and engine room operational protocols be conducted for Advanced Fire Fighting?