Question 338Safety & Environmental - Assistant Engineer
70% to passTo operate a carbon dioxide extinguisher having the type of head shown in the illustration, you would _______________. Illustration SF-0008
Aopen valve and pull pin
Bpull pin and open valve
Cpull pin, open valve, and pull up on release lever
Dopen valve, pull pin, and pull up on release lever
AI Explanation
The correct answer is B) pull pin and open valve. To operate a carbon dioxide (CO2) extinguisher with the type of head shown in the illustration SF-0008, you would first need to pull the pin and then open the valve. This is the correct sequence because the pin secures the valve, preventing accidental discharge. Once the pin is pulled, the valve can be opened to release the CO2 agent. The other options are incorrect because they either have the steps out of order (A and D) or include an unnecessary step of pulling up on a release lever, which is not present on this type of CO2 extinguisher (C).
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