ENS Event | |
|---|---|
17:30 Dec 6, 2022 | |
| Title | Technical Specification Violation |
| Event Description | The following information was provided by the licensee via email:
On December 6th, 2022, University of Utah Training Reactor (UUTR) was in the process of performing a research sample irradiation. The sample was known to have a negative reactivity worth and was therefore placed in the reactor prior to reactor startup. Upon commencing reactor startup procedures, the reactor operator subsequently terminated the startup attempt after noting that the sample appeared to demonstrate a larger negative reactivity worth than what was initially anticipated. After investigating, we identified that there was an inconsistency/miscommunication regarding the sample materials specifications, and the actual negative sample reactivity worth was a larger negative value than that of the original estimate. Immediately afterwards, we performed an updated materials assessment of the sample, which, following reactor calculations, revealed that the sample indeed demonstrated a larger negativity reactivity worth than was originally predicted. As a result, this report is being submitted in accordance with UUTR Technical Specification (TS) 6.7.2 due to 'observed inadequacy in the implementation of administrative or procedural controls such that the inadequacy could have caused the existence or development of an unsafe condition with regard to reactor operation.' In accordance with UUTR TS, the reactor was secured, and Utah Nuclear Engineering Program Director notified, and operations shall not resume unless authorized by the Director. The NRC Project manager was notified. |
| Where | |
|---|---|
| University of Utah Salt Lake City, Utah (NRC Region 0) | |
| License number: | R-126 |
| Reporting | |
| Non | |
| Time - Person (Reporting Time:+67.62 h2.818 days <br />0.402 weeks <br />0.0926 months <br />) | |
| Opened: | Glenn Sjoden 13:07 Dec 9, 2022 |
| NRC Officer: | Kerby Scales |
| Last Updated: | Dec 9, 2022 |
| 56267 - NRC Website
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University of Utah with Non | |
WEEKMONTHYEARENS 562672022-12-06T17:30:0006 December 2022 17:30:00
[Table view]Non Technical Specification Violation ENS 559142022-05-24T17:15:00024 May 2022 17:15:00 Non Degradation to a Fuel Element Cladding 2022-05-24T17:15:00 | |