ENS 57234
ENS Event | |
|---|---|
04:00 Jul 18, 2024 | |
| Title | Lost Source |
| Event Description | The following information was provided by the New York State Department of Health (NYSDOH) via email:
The NYSDOH received an email from the radiation safety officer (RSO) on July 22, 2024, to report a lost Fe-55 source. The make and model of the missing source was not disclosed; however, NYSDOH is requesting additional information and will provide this information once available. The source serial no. is 55-1.1-8 and was last assayed 10/1/2015. At the time of manufacture and distribution, this source was 10 mCi. The source in question was last seen during routine inventory on January 5, 2023. Following this inventory, this source was not accounted for on March 23, 2023. It was believed that this source may have been utilized by an authorized user between January 5, 2023, and March 23, 2023. However, after many discussions between the authorized user and Stony Brook University's radiation safety office, it was confirmed that the source in question was officially lost on 7/18/2024. Decay calculations suggest that the missing Fe-55 source is approximately 1.07 mCi to date. As this source was last inventoried on January 5, 2023, it is estimated that the Fe-55 source was approximately 1.58 mCi at the time it was last confirmed as present in the storage area. This activity is approximately 15.8 times the quantity for Fe-55 requiring labeling as stated in Appendix C to 10 CFR 20. The loss of this source meets the reportability criteria in 10 CFR 20.2201(a)(1)(ii). It is not believed that this source may cause any incidental doses which may exceed the limits in Subparts C or D of 10 CFR 20. Furthermore, the loss of this source would not be expected to have any negative implications on public health. NYSDOH is monitoring this incident and has assigned incident number 1493 to track this event. Additional information will be provided to NMED once available. Event Report ID No. NY-24-06 NYSDOH Incident Number: 1493
The following information was provided by the New York State Department of Health (NYSDOH) via email: On July 31, 2024, NYSDOH performed a full inspection and performed an on-site evaluation of this event. The above information provided indicated that the authorized user in question had their permits administratively terminated and their membership on the university's Radiation Safety Committee revoked because of this event and other compliance issues with the university's Radiation Safety Office. To date, the Fe-55 source in question is still missing. The radiation safety office (RSO) for the licensee is maintaining vigilance when performing audits and permit reviews for other permit holders to see if this Fe-55 source may be located. Additionally, the RSO has implemented a new inventory management system at their facility to further improve accountability of similar sources to prevent recurrence. NYSDOH was monitoring this incident and assigned incident number 1493 to track this event. At this time, NYSDOH has closed incident number 1493 given the corrective actions from this event but will reopen this incident in the event additional information is obtained or the source is located. The licensee is aware of the reporting requirement in the event additional information on this source is discovered following closeout. Notified R1DO (Werkheiser), NMSS (email), ILTAB (email), CNSC (Canada) (email). THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf |
| Where | |
|---|---|
| State University Of New York (Suny) At Stony Brook Stony Brook, New York (NRC Region 1) | |
| License number: | 0455 |
| Organization: | New York State Dept. Of Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+105.03 h4.376 days <br />0.625 weeks <br />0.144 months <br />) | |
| Opened: | Nathaniel A. Kishbaugh 13:02 Jul 22, 2024 |
| NRC Officer: | Josue Ramirez |
| Last Updated: | Sep 16, 2024 |
| 57234 - NRC Website | |
State University Of New York (Suny) At Stony Brook with Agreement State | |
WEEKMONTHYEARENS 572342024-07-18T04:00:00018 July 2024 04:00:00
[Table view]Agreement State Lost Source 2024-07-18T04:00:00 | |