What should be done with radioactive sources within gauges when they are not in use?

The appropriate action regarding radioactive sources in gauges when they are not in use is to secure them in a locked storage area. This practice is crucial for several reasons related to safety and regulatory compliance.

First, securing radioactive sources ensures that they are not accidentally accessed or used by unauthorized individuals. This reduces the risk of exposure and potential harm that could arise from improper handling or accidental use of the source. It also complies with safety protocols and regulations intended to protect workers, the public, and the environment from radiation hazards.

Additionally, locked storage helps maintain control over these materials, which is essential for accountability and tracking within facilities that use radioactive substances. By keeping the sources secured, organizations demonstrate responsibility and commitment to safety standards set by regulatory bodies.

The other options either compromise safety or are not practical in a professional setting. For example, leaving sources accessible for quick use poses significant risks, as does storing them openly. Immediate disposal is not a feasible option for most situations, as regulated disposal processes need to be followed to manage radioactive waste safely.