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Homework Help: Equivalent Dose Problem

  1. Apr 30, 2015 #1
    A worker in a nuclear power station is exposed to 3∙0 mGy of gamma radiation and 0∙50 mGy of fast neutrons. The radiation weighting factor for gamma radiation is 1 and for fast neutrons is 10. The total equivalent dose, in mSv, received by the worker is
    A 3·50
    B 8·00
    C 30·5
    D 35·0
    E 38·5.

    The answer I got (using H=DWR) was C, 30.5 mSv, but the answer sheet said that the correct answer was B, 8.00 mSv.
    I would be most grateful if you could please suggest where I went wrong?
    Thank you for your help!

    (This question is from the SQA National 5 Physics Specimen Paper)

    Update: I asked a friend about it and realised my mistake. I converted mSv into Sv when I didn't need to, which then affected my answer.
    Last edited: Apr 30, 2015
  2. jcsd
  3. Apr 30, 2015 #2


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    Science Advisor
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    Gold Member

    That does not explain your wrong answer. It is explained if you crossed over the weighting factors.
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