Which of the following does NOT need to be double-bagged?

Double-bagging is a safety measure used in the handling of radioactive materials to contain potential contamination and prevent the release of radioactive substances into the environment. The process involves placing waste or contaminated items in a primary bag and then placing that bag into a secondary bag for added protection.

A surplus source that is not leaking does not require double-bagging because it is not actively releasing radioactive material, thus posing a lower risk of contamination. Since the source is secure and not leaking, it can be safely handled without needing the additional containment that double-bagging provides. This means that the risk of exposure or environmental contamination is minimal, allowing for simpler management of the surplus source.

In contrast, items that are radioactive waste from routine procedures, contaminated protective clothing, and items collected from radiological incidents all pose a higher risk of contamination or exposure and thus necessitate the use of double-bagging to ensure safety.