Browse wiki
Jump to navigation
Jump to search
The following report was received by the I … The following report was received by the Illinois Emergency Management Agency (the Agency) via phone and email:</br>The Agency was contacted this afternoon (7/17/25) by Isomedix Operations, Inc. in Libertyville, IL to advise of a reportable equipment failure.</br>According to the report, the radiation monitor used to perform required radioactivity measurements of the pool water (e.g., leak testing of the pool irradiator sources) failed at some point in the last month. It was discovered yesterday, 7/16/25, during a routine monthly check when the system failed to alarm when tested with a check source.</br>Replacement monitoring equipment was installed, and the pool water was determined to be free of radioactivity. This incident had no impact to public or worker safety, nor is there any indication of leaking sources. However, the reportable criteria in 32 Illinois Administrative Code 340.122(c)(2) appear to have been met. The licensee met the 24-hour reporting requirement, and the Agency will report the matter to the NRC shortly.</br>Inspectors will conduct a reactive inspection to determine root cause and corrective action.</br>Illinois Item Number: IL250028</br>* * * UPDATE ON 09/12/2025 AT 1142 FROM KIM STICE TO ROBERT THOMPSON * * *</br>The following information was provided by the Illinois Emergency Management Agency (the Agency) via email:</br>On 7/17/25, the Agency conducted a reactive inspection via phone with the (Isomedix) corporate radiation safety office and confirmed that identical functioning monitoring equipment was installed immediately after the failure was identified, and that the faulty instrument was to be sent to the manufacturer for examination and to determine a possible failure cause. Additionally, the corporate radiation safety officer reviewed additional tests conducted on 7/16/25 (surveys of the deionization tanks conducted and pool water sample collected and analyzed for radioactive contamination) to confirm no leaking of sources, all with negative results.</br>On 8/20/25, inspectors followed up during a routine inspection and confirmed that replacement monitoring equipment had been installed and was calibrated and functional. The licensee advised that they were still waiting on a report from the manufacturer to determine if any additional corrective measures would be instituted. The licensee stated that any information received would be shared with the Agency. Regardless, the Agency will follow up at the time of next inspection.</br>Notified R3DO (Santiago) (email), NMSS Events Notification (email).(email), NMSS Events Notification (email).
05:00:00, 16 July 2025 +
57,818 +
16:20:00, 17 July 2025 +
05:00:00, 16 July 2025 +
The following report was received by the I … The following report was received by the Illinois Emergency Management Agency (the Agency) via phone and email:</br>The Agency was contacted this afternoon (7/17/25) by Isomedix Operations, Inc. in Libertyville, IL to advise of a reportable equipment failure.</br>According to the report, the radiation monitor used to perform required radioactivity measurements of the pool water (e.g., leak testing of the pool irradiator sources) failed at some point in the last month. It was discovered yesterday, 7/16/25, during a routine monthly check when the system failed to alarm when tested with a check source.</br>Replacement monitoring equipment was installed, and the pool water was determined to be free of radioactivity. This incident had no impact to public or worker safety, nor is there any indication of leaking sources. However, the reportable criteria in 32 Illinois Administrative Code 340.122(c)(2) appear to have been met. The licensee met the 24-hour reporting requirement, and the Agency will report the matter to the NRC shortly.</br>Inspectors will conduct a reactive inspection to determine root cause and corrective action.</br>Illinois Item Number: IL250028</br>* * * UPDATE ON 09/12/2025 AT 1142 FROM KIM STICE TO ROBERT THOMPSON * * *</br>The following information was provided by the Illinois Emergency Management Agency (the Agency) via email:</br>On 7/17/25, the Agency conducted a reactive inspection via phone with the (Isomedix) corporate radiation safety office and confirmed that identical functioning monitoring equipment was installed immediately after the failure was identified, and that the faulty instrument was to be sent to the manufacturer for examination and to determine a possible failure cause. Additionally, the corporate radiation safety officer reviewed additional tests conducted on 7/16/25 (surveys of the deionization tanks conducted and pool water sample collected and analyzed for radioactive contamination) to confirm no leaking of sources, all with negative results.</br>On 8/20/25, inspectors followed up during a routine inspection and confirmed that replacement monitoring equipment had been installed and was calibrated and functional. The licensee advised that they were still waiting on a report from the manufacturer to determine if any additional corrective measures would be instituted. The licensee stated that any information received would be shared with the Agency. Regardless, the Agency will follow up at the time of next inspection.</br>Notified R3DO (Santiago) (email), NMSS Events Notification (email).(email), NMSS Events Notification (email).
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 12 September 2025 +
IL-01123-02 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
03:03:25, 24 September 2025 +
16:20:00, 17 July 2025 +
1.472 d (35.33 hours, 0.21 weeks, 0.0484 months) +
05:00:00, 16 July 2025 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.