ENS 42317: Difference between revisions
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| event date = 12/14/2005 06:16 EST | | event date = 12/14/2005 06:16 EST | ||
| last update date = 02/07/2006 | | last update date = 02/07/2006 | ||
| title = Invalid System Actuation | | title = Invalid System Actuation of Emergency Core Cooling System Components | ||
| event text = This report is being made in accordance with 10 CFR 50.73(a)(1), which states in part, 'in the case of an invalid actuation reported under 10 CFR 50.73(a)(2)(iv), other than the reactor protection system (RPS) when the reactor is critical, the licensee may, at its option, provide a telephone notification to the NRC Operations Center within 60 days after discovery of the event instead of submitting a written LER. | | event text = This report is being made in accordance with 10 CFR 50.73(a)(1), which states in part, 'in the case of an invalid actuation reported under 10 CFR 50.73(a)(2)(iv), other than the reactor protection system (RPS) when the reactor is critical, the licensee may, at its option, provide a telephone notification to the NRC Operations Center within 60 days after discovery of the event instead of submitting a written LER. | ||
On December 14, 2005, at 0616 hours EST, a failure of the left channel load sequencer resulted in an invalid actuation of components associated with the left channel design basis accident (DBA) sequencer. Components in the emergency core cooling system were among the components actuated. Therefore, this event constitutes a partial actuation of the emergency core cooling system, which is reportable under 10 CFR 50.73(a)(2)(iv)(A). All components actuated by the event functioned satisfactorily as would be expected for this equipment failure and operating status of the plant at the time of the event. | On December 14, 2005, at 0616 hours EST, a failure of the left channel load sequencer resulted in an invalid actuation of components associated with the left channel design basis accident (DBA) sequencer. Components in the emergency core cooling system were among the components actuated. Therefore, this event constitutes a partial actuation of the emergency core cooling system, which is reportable under 10 CFR 50.73(a)(2)(iv)(A). All components actuated by the event functioned satisfactorily as would be expected for this equipment failure and operating status of the plant at the time of the event. | ||
Latest revision as of 21:19, 1 March 2018
| Where | |
|---|---|
Palisades  Michigan (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+1323.5 h55.146 days <br />7.878 weeks <br />1.813 months <br />) | |
| Opened: | Barb Dotson 14:46 Feb 7, 2006 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Feb 7, 2006 |
| 42317 - NRC Website
| |