Is Your Exit Sign Nuclear?

If you possess a non-electric exit sign (lacking electrical wiring or battery), it is likely to have radioactive tritium gas. Such "nuclear" exit signs must be handled with caution and disposed of in accordance with the guidelines of the US Nuclear Regulatory Commission upon expiration. The below exit sign model highlights crucial features of exit signs contaminated with tritium.

Care & Packaging of Self-Luminous Tritium Exit Signs

As a precaution, it is advisable to switch off the lights in the room before handling any tritium signs. In the event of a damaged or leaking light tube inside the sign, the corresponding letter on the sign may appear dark when the general lighting is switched off.

To prevent heavy liquids from seeping onto your skin, wear gloves that are resistant to water. This will be useful in the event that the tube containing tritium inside the sign breaks, as it will prevent your hands from absorbing the tritium.

Exercise caution when handling intact signs, particularly during installation or removal, as this is when over 95% of sign damage typically occurs.

If you accidentally break a tritium exit sign, evacuate the area immediately and notify your safety officer aware of the situation or call your nearest radiation control department.