Danger in the EXIT Sign

June 12, 2008

by Rochelle Davis, HSC Founding Executive Director

Did you know that many self-luminous EXIT signs commonly found in schools and other public places contain radioactive tritium that can create harmful exposures to humans? The dangerous exposure can occur if signs leak and when they are disposed of.

The issue of dangerous chemicals inside the ubiquitous EXIT sign highlights the need for us to consider the possible health impact of each detail that goes into a school building. Children are especially vulnerable to this type of exposure.

If you would like to learn more, check out this online course offered by the US. EPA Office of Radiation and Indoor Air.