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  1. #1
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    Default WH&S exam question

    I'm doing revision and stuck on this question I just can't get my head around it. I think my brain is turning mushy now lol. Can anyone help?

    Are water based fire extinguishers safe for all types of fires?
    I put no, but why?

    What type of fire extinguisher would be used for an electrical fire?

    What's the best fire extinguisher that's the most versatile?

    Thanks so much in advance these are the last questions then I can press print and study like mad lol :-/


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  2. #2
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    Isn't foam based used for elec fires? Just a guess!

  3. #3
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    I think it's a CO2 extinguisher that's the most versatile

    Dry powder can be used on electrical but no good for oil
    Last edited by Mod-Zeddie; 19-05-2013 at 12:26.

  4. #4
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    Thanks everyone I finally got the revision sheet done now :-3


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  5. #5
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    Q1, First question is correct it's 'no', and the reason is water is good for combustible solids like paper, timber, cardboard. Will cause oils, lubricants to flare up and spread the fire. It will cause metal fires to explode and if electricity not isolated first, you're at risk of electric shock.

    Q2, dry chemical powder or Co2. (Water and foam can be used if power is isolated first).

    Q3, Most versatile would probably be foam for common fires, because you have oils and carbon things. (general household). Industrial would be different.
    Last edited by Mod-Uniquey; 19-05-2013 at 14:38. Reason: eta

  6. The Following User Says Thank You to Mod-Uniquey For This Useful Post:

    Jensha  (19-05-2013)


 

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