ENS 43332: Difference between revisions
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| event date = 04/12/2007 06:20 EDT | | event date = 04/12/2007 06:20 EDT | ||
| last update date = 05/01/2007 | | last update date = 05/01/2007 | ||
| title = Primary Containment Isolation Due | | title = Primary Containment Isolation Due to Loss of Rps Power Supply | ||
| event text = On April 12. 2007 at approximately 0620, with the James A Fitzpatrick Nuclear Power plant (JAF) operating at 100% reactor power, an equipment malfunction occurred, resulting in the tripping of one of the two 'B' Reactor Protection System (RPS) motor generator Electrical Protection Assembly (EPA) breakers. This caused a corresponding loss of power to the 'B' RPS bus, a half scram and primary containment isolation valve closures. Appropriate actions were taken in accordance with Abnormal Operating Procedure (AOP)-60, 'Loss of RPS Bus 'B' Power'. All equipment operated as designed as a result of the loss of power to the 'B' RPS bus. | | event text = On April 12. 2007 at approximately 0620, with the James A Fitzpatrick Nuclear Power plant (JAF) operating at 100% reactor power, an equipment malfunction occurred, resulting in the tripping of one of the two 'B' Reactor Protection System (RPS) motor generator Electrical Protection Assembly (EPA) breakers. This caused a corresponding loss of power to the 'B' RPS bus, a half scram and primary containment isolation valve closures. Appropriate actions were taken in accordance with Abnormal Operating Procedure (AOP)-60, 'Loss of RPS Bus 'B' Power'. All equipment operated as designed as a result of the loss of power to the 'B' RPS bus. | ||
At 0629, the 'B' RPS bus was placed on the alternate power supply. At approximately 0658 the RPS half scram was reset and at approximately 0702 Primary Containment Isolation System (PCIS) isolation signal was reset. Restoration of the various isolated systems commenced shortly thereafter. The reactor remained at 100% power throughout the event and Technical Specifications (TS) Limiting Condition for Operation (LCO) Actions were entered for the affected equipment as required. | At 0629, the 'B' RPS bus was placed on the alternate power supply. At approximately 0658 the RPS half scram was reset and at approximately 0702 Primary Containment Isolation System (PCIS) isolation signal was reset. Restoration of the various isolated systems commenced shortly thereafter. The reactor remained at 100% power throughout the event and Technical Specifications (TS) Limiting Condition for Operation (LCO) Actions were entered for the affected equipment as required. | ||
Latest revision as of 21:16, 1 March 2018
| Where | |
|---|---|
FitzPatrick  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| LER: | 05000333/LER-2023-002 Reactor Protection System Electric Power Monitoring System Trip Caused Primary Containment Isolation |
| Time - Person (Reporting Time:+457.05 h19.044 days <br />2.721 weeks <br />0.626 months <br />) | |
| Opened: | Eugene Dorman 11:23 May 1, 2007 |
| NRC Officer: | Jason Kozal |
| Last Updated: | May 1, 2007 |
| 43332 - NRC Website
| |