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The following is a summary of information … The following is a summary of information provided by the licensee via telephone:</br>On March 6, 2024, around 0600 CST, a technician found loose molybdenum (Mo-99) / technetium (Tc-99m) contamination inside a restricted area. Prior to the discovery, a production hot cell inside the restricted area had been deep cleaned as part of the regular maintenance program.</br>A thorough investigation of the area was conducted which revealed additional loose contamination on the lab floor. Surveys of surrounding areas did not reveal any spread of contamination outside of the restricted lab area. </br>Due to (1) the existing access controls, (2) personal protective equipment requirements for lab access, and (3) the absence of contamination identified by body scans of personnel exiting the lab; the licensee does not suspect any spread of contamination outside of the restricted area or personnel intake. Biological samples will be collected to confirm that no intake occurred.</br>The highest contamination level identified was 260 mrem/hr on contact and 2.3 mrem/hr at 1 foot. The contamination has been remediated to below licensee action levels. Overall, 2.4 mCi of Mo-99 was identified outside of the production hot cell. The 10 CFR 20 Appendix B limit for Mo-99 is 1 mCi. The licensee is investigating the root cause of this event.</br>* * * RETRACTION ON 07/15/24 AT 1205 EDT FROM DANEIL SZATKOWSKI TO KERBY SCALES * * *</br>The following retraction is a summary of information provided by the licensee via telephone:</br>Due to performing additional air samples and biological assays, the licensee determined that they did not exceed any thresholds, and the event is not reportable.</br>Notified R3DO (Nguyen) and NMSS Events Notification via email.n) and NMSS Events Notification via email. +
12:00:00, 6 March 2024 +
57,012 +
17:05:00, 6 March 2024 +
12:00:00, 6 March 2024 +
The following is a summary of information … The following is a summary of information provided by the licensee via telephone:</br>On March 6, 2024, around 0600 CST, a technician found loose molybdenum (Mo-99) / technetium (Tc-99m) contamination inside a restricted area. Prior to the discovery, a production hot cell inside the restricted area had been deep cleaned as part of the regular maintenance program.</br>A thorough investigation of the area was conducted which revealed additional loose contamination on the lab floor. Surveys of surrounding areas did not reveal any spread of contamination outside of the restricted lab area. </br>Due to (1) the existing access controls, (2) personal protective equipment requirements for lab access, and (3) the absence of contamination identified by body scans of personnel exiting the lab; the licensee does not suspect any spread of contamination outside of the restricted area or personnel intake. Biological samples will be collected to confirm that no intake occurred.</br>The highest contamination level identified was 260 mrem/hr on contact and 2.3 mrem/hr at 1 foot. The contamination has been remediated to below licensee action levels. Overall, 2.4 mCi of Mo-99 was identified outside of the production hot cell. The 10 CFR 20 Appendix B limit for Mo-99 is 1 mCi. The licensee is investigating the root cause of this event.</br>* * * RETRACTION ON 07/15/24 AT 1205 EDT FROM DANEIL SZATKOWSKI TO KERBY SCALES * * *</br>The following retraction is a summary of information provided by the licensee via telephone:</br>Due to performing additional air samples and biological assays, the licensee determined that they did not exceed any thresholds, and the event is not reportable.</br>Notified R3DO (Nguyen) and NMSS Events Notification via email.n) and NMSS Events Notification via email. +
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00:00:00, 15 July 2024 +
24-04206-01 +
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11:20:07, 16 July 2024 +
17:05:00, 6 March 2024 +
0.212 d (5.08 hours, 0.0302 weeks, 0.00696 months) +
12:00:00, 6 March 2024 +
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