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May 22, 2024
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Tritium Exit Signs, Responsible Management
Hosted by U.S. EPA
Office of Radiation and Indoor Air (ORIA)

Welcome to EPA's Training on Responsible Management of Tritium EXIT Signs.

Numerous incidents connect radioactive tritium self-luminous EXIT signs or devices with elevated tritium (H3) levels in municipal landfill leachate, Superfund sites, and emergency response to broken tritium EXIT signs in schools and other public places. Government poison and hazardous materials hotlines and officials in emergency management, radiation protection, nuclear safety, public health and medicine may receive requests for help with tritium EXIT sign disposal or suspected contamination. This self-paced online program promotes government, industry and purchaser awareness of tritium EXIT sign safety and legal requirements and Energy-Star non-radioactive “green” sign alternatives. The goal is to reduce the potential environmental risks from tritium entering our soil and groundwater and to avoid elevated levels of radiation exposure from leaking Tritium EXIT signs in confined indoor environments.

Please use the following information to assist you in navigating the course pages:

The MENU button, at the bottom of each screen always takes you back to the MENU: Key Points screen, which summarizes the entire course content by section. Click on any of the blue (hyperlinked) sections titles on the MENU: Key Points screen to go into that course section.

Once you've selected a section, you must navigate through that section by clicking the Next ot Back buttons at the bottom of each page. When you finish a section (and the Next button will take you no further), you can return to the Key Points page by clicking the MENU button.

You may choose to proceed through this course in linear order, but you can also explore the different sections by clicking on the headings in the blue sidebar. Toll your mouse over the titles to navigate to specific in-depth information and videos.

The blue-colored text throughout the course is hyperlinked to pertinent websites and downloadable reference information. Click on any blue-colored text to open these links. You can find these website addresses and references compiled in the References and Related Links section.

This same information can also be found by clicking on the Help link in the bottom left hand side of the course screen.

To use this training, you will need the Adode Flash plug-in. You should be prompted to install the plug-in if you do not already have it installed. If you are not prompted and the training doesn't load, you can download Flash at this address: You will also need to keep your Internet connection open throughout the training.

For general information contact Renelle Rae by telephone at 202-343-9459 or via e-mail at

This is an Independent On-line Training product.
To access the training please click here:

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