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NMTCB Study Guide Questions and Answers 100% Solved
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Exam of 3 pages for the course NMTCB at NMTCB (NMTCB Study Guide)
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NMTCB Study Guide3 major federal agencies that control use of radioactive materials in NM – answer NRC
DOT
FDA
DOT I (white) - answer At contact no more than 0.5 mR/hr
At 3ft no detected radioactivity
DOT II (yellow) - answer Contact = no more than 50 mR/hr
3ft = no more than 1 mR/hr
DOT III (yellow) - answer Contact = no more than 200 mR/hr
3ft = no more than 10 mR/hr
Total dose calculation - answerTotal dose = (dose rate)(time)
Inverse square law - answer(Intensity1 x Distance1)^2 = (I2)(D2)^2
Occupational exposure: Whole-body - answer50 mSv or 5 rem /year
Occupational exposure: Lens of eye - answer150 mSv or 15 rem /year
Occupational exposure: Any organ or tissue - answer500 mSv or 50 rem /year
Occupational exposure: Skin or any extremity - answer500 mSv or 50 rem /year
Exposure for general public - answer1 mSv or 0.1 rem /year
Exposure for embryo/fetus of occupationally exposed worker - answer5 mSv or 0.5 rem
for entire pregnancy
Caution: radioactive materials - answerAny area w/RA materials
Entrances to lab and department
Potential presence of radiation sources/contamination
No eating or drinking in area
No smoking or applying cosmetics in area
Caution: radiation area - answerAreas you could receive more than 0.05 mSv (5 mrem)
in 1 hour at 30 cm from source
Commonly seen at NM lab entrances
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