The following is a summary provided by the
Illinois Emergency Management Agency (the Agency) via email:
On June 8, 2023 at 0920 CDT, the licensee (Roquette America Inc.) in Gurnee, IL, advised the Agency of a stuck open shutter (Ohmart fixed gage, 15 mCi, Cs-137). The reportable equipment failure was discovered during a routine shutter check. The Radiation Safety Officer confirmed that the gauge will remain in its mounted condition attached to a small sectional tank and that operators were immediately advised of the inoperable shutter. The manufacturer was notified and confirmation for a site visit to repair the shutter is pending. No personnel exposures occurred as a result. The incident was reported to the Agency within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as required under 32 Ill. Adm. Code 340.1220(c)(2). Agency staff will perform a reactionary inspection to ensure adequate control of the gauge and area until the shutter is repaired.
Illinois event number: IL230012