Radiation Area Signs

Radiation area signs mark locations where workers could receive radiation doses above 5 mrem in one hour at 30 cm from the source. High radiation area signs mark locations where doses could exceed 100 mrem per hour. Very high radiation area signs cover areas above 500 rad per hour. We carry all three NRC-defined classifications in the required color scheme and trefoil symbol format.

Yes. We offer radiation area signs in photoluminescent glow-in-the-dark materials for areas where visibility during power outages is critical. Glow signs absorb ambient light and remain visible without electricity - essential for radiation-controlled access points where the hazard must be communicated to personnel even during emergency situations when facility power is unavailable.

Yes. Our customizable radiation area sign templates allow you to add specific dose rate information, area designations, authorized personnel restrictions, or contact information. Custom radiation area signs are available in aluminum, adhesive polyester, and glow formats - ideal for nuclear facilities, research labs, and medical imaging departments with specific NRC license requirements for area boundary marking.

The NRC requires the radiation trefoil symbol to be printed in magenta or purple on a yellow background to create a distinctive, internationally recognized hazard marker. The three-bladed trefoil represents ionizing radiation emanating from a central source. Our radiation area signs use this required color and symbol combination to meet NRC 10 CFR 20 and OSHA 29 CFR 1910.1096 marking requirements at all area boundaries.