What is the purpose of leak testing for sealed sources and portable gauges?

• A. Increase radiation output.
• B. Detect leaks to prevent internal contamination and ensure safety.
• C. Is optional.
• D. Only for new devices.

Answer: (B)

Leak testing verifies that sealed sources and portable gauges stay contained and do not release radioactive material. Even when devices are well manufactured, seals can degrade or surfaces can be damaged during use, handling, or aging. A wipe test is used to check for removable contamination on the device’s exterior. If the wipe shows detectable activity above the allowed limit, the source is considered leaking, and it must be removed from service, repaired or replaced, and the situation investigated and reported as required. The goal is to prevent internal contamination of workers and to protect the environment and public from potential exposure, since leaked material can get inside the body through skin, inhalation, or ingestion. This testing is a standard, regulated safety practice and is performed routinely, not optional, and it applies to both new and in-use devices.