NRC Event Notification: Radiation Monitor Failure at Isomedix Operations, Illinois
July 25, 2025
July 25, 2025
WASHINGTON, July 25 -- Isomedix Operations Inc., Libertyville, Illinois, reported an equipment failure involving a radiation monitor used for critical pool water radioactivity measurements, including leak testing of pool irradiator sources. The Illinois Emergency Management Agency was notified on July 17, 2025.
The malfunction was discovered on July 16, 2025, during a routine monthly check when the system failed to alarm during a test with a check source. The monitor is believed to . . .
The malfunction was discovered on July 16, 2025, during a routine monthly check when the system failed to alarm during a test with a check source. The monitor is believed to . . .