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Radiological Control & Safety Procedures 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 Control & Safety Procedures flashcards as text

  1. What is the primary purpose of a Radiological Work Permit (RWP)?

    Answer: To authorize and control work in radiologically controlled areas

    An RWP authorizes specific work in radiologically controlled areas and specifies controls, dose limits, and protective measures required.

  2. During a radiological survey, a technician detects a contamination level of 10,000 dpm/100 cm² beta on an unrestricted surface. What is the appropriate immediate action?

    Answer: Post the area and restrict access pending decontamination

    Contamination exceeding release limits on unrestricted surfaces requires immediate area posting and restriction until decontamination reduces levels to acceptable limits.

  3. Which respiratory protection device provides the highest protection factor in a radiological environment?

    Answer: Self-contained breathing apparatus (SCBA)

    SCBA provides a protection factor of 10,000, the highest available, because it supplies breathing air independent of the surrounding atmosphere.

  4. What is 'ALARA' and which regulatory framework mandates its application?

    Answer: As Low As Reasonably Achievable; mandated by 10 CFR 20

    ALARA stands for As Low As Reasonably Achievable and is required under 10 CFR 20.1101 for all NRC licensees to keep radiation exposures as low as practicable.

  5. A radiation protection technician must verify that a radiation-generating device is de-energized before allowing entry. Which verification method is most reliable?

    Answer: Using a calibrated survey meter to confirm no radiation field is present

    Direct measurement with a calibrated survey meter provides the most reliable confirmation that a radiation-generating device is not producing radiation.

  6. Which of the following best describes the function of a dosimeter alarming at its set point during radiological work?

    Answer: Alerts the worker that a pre-set dose or dose rate threshold has been reached

    Electronic personal dosimeters alarm at pre-set dose or dose rate thresholds to warn workers before they exceed planned exposure limits.

  7. Under 10 CFR 20, what is the occupational whole-body dose limit per year for a radiation worker?

    Answer: 5 rem (0.05 Sv)

    10 CFR 20.1201 sets the occupational total effective dose equivalent (TEDE) limit at 5 rem (0.05 Sv) per year.