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Health Physics Regulations and Standards Flashcards

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  1. Under 29 CFR 1910.1096 (OSHA ionizing radiation standard), what is the permissible dose for whole-body occupational exposure per calendar quarter?

    Answer: 1.25 rem per quarter

    OSHA's 29 CFR 1910.1096 sets the whole-body occupational dose limit at 1.25 rem per calendar quarter (5 rem/year).

  2. Under NRC regulations, which document must be posted at a licensed facility to inform workers of their radiation protection rights?

    Answer: NRC Form 3 (Notice to Employees)

    NRC Form 3 must be posted prominently at licensed facilities to notify workers of their rights and responsibilities regarding radiation protection.

  3. The NCRP Report No. 116 recommends which annual effective dose limit for occupational workers in the United States?

    Answer: 50 mSv/year (5 rem/year)

    NCRP Report No. 116 recommends an annual occupational effective dose limit of 50 mSv (5 rem) per year.

  4. Which EPA regulation under the Safe Drinking Water Act establishes maximum contaminant levels (MCLs) for radionuclides in public water systems?

    Answer: 40 CFR Part 141

    40 CFR Part 141 (National Primary Drinking Water Regulations) sets MCLs for radionuclides including radium, uranium, gross alpha, and beta/gamma emitters.

  5. Under 10 CFR 20.1901, a 'Caution: High Radiation Area' sign must be posted where dose rates exceed:

    Answer: 100 mrem/hour at 30 cm from the source

    A High Radiation Area requires posting when radiation levels exceed 100 mrem/h at 30 cm from the source, surface, or radiation level.

  6. What is the significance of the 'exclusion zone' under 10 CFR 100 for nuclear reactor siting?

    Answer: Area where no member of the public may reside permanently and where the licensee has authority to exclude or remove personnel

    The exclusion zone (EZ) is the area surrounding a reactor where the licensee controls all activities and can exclude or remove personnel during emergencies.

  7. Under IAEA Safety Standards (GSR Part 3), the occupational dose limit is consistent with which international recommendation?

    Answer: ICRP Publication 103 (20 mSv/year averaged over 5 years)

    IAEA GSR Part 3 adopts the ICRP 103 recommendation of 20 mSv/year averaged over 5 consecutive years with no single year exceeding 50 mSv.