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Radiological Protection Standards Flashcards

7 cards from real NRRPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Radiological Protection Standards flashcards as text

  1. The annual occupational dose limit for the skin and extremities under 10 CFR Part 20 is:

    Answer: 50 rem (500 mSv)

    10 CFR 20.1201 sets the annual occupational dose limit for the skin of the whole body and the extremities at 50 rem (500 mSv).

  2. A radiation worker receives an unplanned dose of 10 rem in one year. Under 10 CFR 20.1201, this would be:

    Answer: A violation of the 5 rem TEDE annual limit

    The annual occupational TEDE limit under 10 CFR 20.1201 is 5 rem; receiving 10 rem unplanned constitutes a violation.

  3. Which radiation weighting factor (wR) is assigned to alpha particles under ICRP 103?

    Answer: 20

    ICRP Publication 103 assigns a radiation weighting factor of 20 to alpha particles due to their high linear energy transfer (LET).

  4. The 'negligible individual dose' (NID) defined by NCRP Report No. 116 is:

    Answer: 0.01 mSv/year

    NCRP Report No. 116 defines the negligible individual dose as 0.01 mSv/year (1 mrem/year), below which individual protective actions are not warranted.

  5. Under 10 CFR Part 20, a 'declared pregnant worker' receives a dose limit of:

    Answer: 0.5 rem for the entire gestation

    10 CFR 20.1208 limits the dose to the embryo/fetus of a declared pregnant worker to 0.5 rem (5 mSv) during the entire gestation period.

  6. What document describes the NCRP's recommended basic radiation protection criteria for the U.S.?

    Answer: NCRP Report No. 116

    NCRP Report No. 116 (Limitation of Exposure to Ionizing Radiation, 1993) is the primary NCRP document recommending basic radiation protection criteria.

  7. In the context of radiological protection, 'deterministic effects' differ from stochastic effects because they:

    Answer: Have a threshold dose and increase in severity with dose above the threshold

    Deterministic effects (e.g., cataracts, radiation burns) have a threshold below which they do not occur and increase in severity as dose exceeds the threshold.