An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Radiation Protection

Is CAP-88 PC appropriate for estimating exposures from short-term or "accidental" releases?

CAP-88 is not an appropriate program for modeling short term or “accidental” releases for a few reasons. The software uses dose/risk conversion factors that rely on chronic, low-level exposure predictions and utilizes the Gaussian model, which is a long-term model that estimates average dispersals of radionuclides. Additionally, the software relies on weather data that utilizes annual averages, so a short-term release would not work.

Learn more about CAP-88 PC.

Return to Frequent Questions about Radiation Protection.