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| Entered date | Event description | |
|---|---|---|
| ENS 49709 | 10 January 2014 02:14:00 | Reactor Building (Secondary Containment) pressure increased to above the Technical Specification Surveillance requirement of 0.25 inches vacuum water gauge briefly (two minutes or less) on two occasions. This is reportable as an event that could have prevented fulfillment of a safety function needed to control the release of radiation and mitigate the consequences of an accident. Reactor Building pressure has been restored to normal (greater than 0.25 inches vacuum water gauge) returning Secondary Containment to operable status. The cause of the event is under investigation. There were no radiological releases associated with the event. No safety system actuations or isolations occurred. The licensee notified the NRC Resident Inspector. |
| ENS 49645 | 17 December 2013 15:25:00 | At 1133 PST on December 17, 2013, the Reactor Building Stack Radiation Monitor - Intermediate Range detector was declared non-functional due to scheduled maintenance on supporting equipment. Preplanned compensatory actions have been initiated. This event is being reported as a loss of emergency assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii). A follow up notification will be made when the equipment has been returned to service. The licensee has notified the NRC Resident Inspector.
At 1457 (PST) on December 21, 2013, the Reactor Building Stack Radiation Monitor - Intermediate Range detector was declared functional following scheduled maintenance on supporting equipment. Emergency assessment capability has been restored. Preplanned compensatory actions have been secured. The licensee has notified the NRC Resident Inspector. Notified the R4DO (Werner). |