IRRSP Source Management and Security 2

Question 1

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

Accepted Answer

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

Answer

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

Question 2

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

Accepted Answer

Iridium-192 (Ir-192)

Answer

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.

Question 3

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

Accepted Answer

Remove the source from service immediately and notify the NRC

Answer

A leaking source must be immediately withdrawn from service and the NRC notified per 10 CFR 34.27, as a failed leak test indicates a loss of source containment.

Question 4

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

Accepted Answer

A portable shielded container used to store or transport sealed sources

Answer

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

Question 5

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

Accepted Answer

Before and after each use

Answer

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

IRRSP - Industrial Radiography Radiation Safety Personnel Practice Test

IRRSP - Industrial Radiography Radiation Safety Personnel Practice Test

IRRSP Source Management and Security 2