Tritium Exit Signs

Tritium exit signs are self-illuminating signs containing tritium gas, which is radioactive. These signs produce green light continuously for several years without any external power source and are typically used in areas where providing electrical power is difficult. The signs are labeled with a “CAUTION RADIOACTIVE MATERIAL” warning on the back or side. Unless damaged or broken, a tritium exit sign does not present any hazard.

Tritium exit signs found during renovations or demolition must be disposed of in accordance with federal regulations. EHS should be contacted to make proper disposal arrangements.

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