ENS 40626
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ENS Event | |
|---|---|
18:15 Mar 30, 2004 | |
| Title | Safety Injection Accumulator Level Greater than Allowed by Technical Specification |
| Event Description | Unit 2 'A' Safety Injection Accumulator level was determined to be greater than level band allowed by technical specification 3.5.1 for Safety Injection Accumulators at 1127 [CST]. A power reduction in preparation for a normal reactor shutdown was commenced at 1215 in accordance with normal plant procedures.
The Safety Injection Accumulator level instruments were in question due to one indicator being within the normal range and the other being off-scale high. During troubleshooting efforts, an ultra-sonic detector was used to verify 'A' Safety Accumulator tank level. The ultra-sonic detector indicated that level was above the high scale indication, and the accumulator was declared OOS due to being above the maximum accumulator volume allowed by SR 3.5.1.2 (<1136 cubic feet). The Unit 2 'B' Safety Injection Accumulator was unaffected by the event and remains operable. The Unit 2 'A' Safety Injection Accumulator level and pressure was returned to technical specification parameters at 1403. The Unit 2 shutdown was stopped with the unit at 82% power and actions are in progress to return to full power operation. The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Point Beach  Wisconsin (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| LER: | 05000301/LER-2004-001 |
| Time - Person (Reporting Time:+-2.82 h-0.118 days <br />-0.0168 weeks <br />-0.00386 months <br />) | |
| Opened: | Charles Stalzer 15:26 Mar 30, 2004 |
| NRC Officer: | Mike Ripley |
| Last Updated: | Mar 30, 2004 |
| 40626 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (82 %) |
WEEKMONTHYEARENS 503962014-08-24T05:00:00024 August 2014 05:00:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Post Accident Monitoring Instrumentation Out of Service ENS 464752010-12-13T18:10:00013 December 2010 18:10:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Not Meeting Rod Group Allignment Limits ENS 439072008-01-15T20:15:00015 January 2008 20:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unusual Event - Loss of Offsite Power ENS 436492007-09-18T13:43:00018 September 2007 13:43:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Refueling Water Storage Tank Temperature Above Operating Limits ENS 434242007-06-14T23:19:00014 June 2007 23:19:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec. Required Shutdown Due to 72 Hour Completion Time Not Met ENS 421092005-11-02T05:00:0002 November 2005 05:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec Required Shutdown Due to Degradation of Containment Coatings ENS 414472005-02-27T17:58:00027 February 2005 17:58:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Loss of Dc Battery Chargers ENS 412122004-11-19T22:22:00019 November 2004 22:22:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to a Steam Leak on an Instrument Isolation Valve Inside Containment ENS 406262004-03-30T18:15:00030 March 2004 18:15:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Safety Injection Accumulator Level Greater than Allowed by Technical Specification 2014-08-24T05:00:00 | |
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