EFMR

About EFMR
Our Mission
News
How we do it
Radiation Levels
RadAlert Monitor
Radiation Data
Education
Marcellus Shale
Decommissioning
Newsletters
Emergency Planning
Glossary
Links
Contact Us
Where To Go When You Need Help

Radiation Levels

Based on studies of population concentrations, prevailing wind currents and Three Mile Island's technical specifications, the EFMR Monitoring Group installed real-time radiation monitors around the Three Mile Island nuclear power station.

The ST-10 monitors are connected to a central computer and send counts back every minute. The data is cryptographically signed by the radiation monitor and a receipt is kept for each transmission to prove its place and time of origin. The data is stored in a database on the server and can be accessed by any authorized computer.

If the radiation level exceeds a preset alarm level the administrator is alerted via text message. The software allows the data to be displayed as tables, graphs or readings on a diagram or map. The data can be viewed on a desktop computer, tablet, or smartphone.

The map below reflects average radiation counts based on recent ten minute intervals. At this writing our database contains over 5 million entries - one entry for each minute of each day for each radiation monitor.

Manual (PDF)

Average CPM: 1.2
as of 1:17 pm EST on Fri Jul 20, 2018

© 2003-2008 EFMR Monitoring Group