When not in use, how should a film badge or TLD be stored?

Storing a film badge or Thermoluminescent Dosimeter (TLD) in an area with only background radiation levels is the appropriate practice as it minimizes unnecessary exposure to radiation, ensuring that the recorded dose accurately reflects any occupational exposure rather than incidental exposure from nearby sources.

If film badges or TLDs are stored in locations such as with the radiography equipment or in the darkroom, they might receive exposure to radiation or light, which can lead to inaccurate readings. The cab of the radiography vehicle is also not a suitable place, as the dosimeters could be exposed to radiation emitted from the vehicle's equipment or any materials being transported. Thus, keeping them in an area with only background radiation ensures they are kept safe and their readings remain reliable for monitoring personal exposure levels.