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Source Management and Security Flashcards

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

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  1. Where must exposure devices containing sealed sources be stored when not in use?

    Answer: In a licensed, secured storage location meeting NRC physical security requirements

    Sealed sources must be stored in NRC-licensed locations that meet physical security requirements under 10 CFR 34 and 10 CFR 37.

  2. Which isotope is most commonly used in portable industrial radiography exposure devices due to its appropriate half-life and gamma energy?

    Answer: Iridium-192 (Ir-192)

    Ir-192 is the most widely used isotope in portable industrial radiography because its ~74-day half-life and average gamma energy (~0.38 MeV) are well-suited for field radiography of steel.

  3. What is the required immediate action if a sealed source leak test yields removable contamination above the regulatory limit?

    Answer: Remove the source from service immediately and notify the NRC

    A leaking source must be immediately withdrawn from service and the NRC notified per 10 CFR 34.27, as a failed leak test indicates a loss of source containment.

  4. What is a 'pig' in the context of industrial radiography source management?

    Answer: A portable shielded container used to store or transport sealed sources

    A 'pig' is a portable, heavily shielded container (typically lead or depleted uranium) used to safely store and transport a single sealed source.

  5. How frequently must radiographers physically account for all sealed sources in their possession to ensure source security?

    Answer: Before and after each use

    Radiographers must account for all sealed sources before and after each use to immediately detect any loss or potential theft of radioactive material.

  6. Which of the following is NOT required on a source inventory record under 10 CFR 34?

    Answer: Name of the radiographer who used the source most recently

    Source inventory records must identify the isotope, serial number, and estimated activity, but do not specifically require the name of each radiographer who has used the source.

  7. What type of transport package is required for moving industrial radiography sources between job sites under DOT regulations?

    Answer: A DOT Type A package meeting activity limits

    Sealed sources used in portable industrial radiography are transported in DOT-approved Type A packages, provided the activity does not exceed Type A quantity limits.