ENS Event | |
|---|---|
15:00 May 24, 2004 | |
| Title | Breach Of Primary Fission Product Barrier |
| Event Description | During routine annual maintenance, a fueled control rod was determined to have a cladding failure. The control rod end cap weld was broken and the fuel in the fueled control rod had been exposed. A preliminary radiological assessment was performed and showed negligible release. There was minimum surface contamination isolated to the area of the breach. Radiation readings on contact were less than 20 millirem/hour. All air sample concentrations were well below 10CFR20 Derived Air Concentration (DAC) limits.
Licensee notified the NRC Program Manager for Non Power Reactors and the Region 4 RA. |
| Where | |
|---|---|
| Idaho State University Pocatello, Idaho (NRC Region 4) | |
| License number: | R-110 |
| Reporting | |
| Non | |
| Time - Person (Reporting Time:+42.63 h1.776 days <br />0.254 weeks <br />0.0584 months <br />) | |
| Opened: | John Bennion 09:38 May 26, 2004 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | May 26, 2004 |
| 40776 - NRC Website
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Idaho State University with Non | |
WEEKMONTHYEARENS 546282020-03-31T23:50:00031 March 2020 23:50:00
[Table view]Non Notification of a Non-Emergency Unusual Event Due to a Seismic Event ENS 407762004-05-24T15:00:00024 May 2004 15:00:00 Non Breach of Primary Fission Product Barrier 2020-03-31T23:50:00 | |