ENS 42552
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ENS Event | |
|---|---|
18:30 May 4, 2006 | |
| Title | 24-Hour Condition of License Report Involving Fire Protection Plan Violation |
| Event Description | The Perry Nuclear Power Plant (PNPP) Operating License requires that a report be made within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to the NRC operations center via the emergency notification system in the event that a violation of the PNPP Fire Protection Program occurs. On May 2, 2006, it was discovered that a specific set of Division 1 Emergency Diesel Generator (EDG) Control Room Control Switch contacts were not designed to isolate the Control Room from the local Division 1 EDG controls in the event of a control room fire. At 1430 on May 4, 2006 it was determined that this deficiency violated the PNPP fire protection program and could adversely affect plant shutdown in the case of a control room fire. A potential fire induced hot short in the diesel generator logic circuit(s), may result in a failure to start or a spurious trip of the Diesel Generator even if control is transferred to remote control. Although repairs and operator actions could have been taken to restore the Division 1 EDG if the Control Room fire caused a failure to start or a spurious trip of the Diesel Generator, these activities were not specifically identified in the Fire Protection safe shutdown analysis or associated operating procedures. The ability to achieve and maintain safe shutdown in the event of a fire in the Unit 1 Control Room could be adversely affected. Compensatory actions (procedure changes) have been completed to address this issue. A written report will follow in accordance with Technical Specification 5.6.6.a and Operating License Condition 2.F.
The licensee discovered this discrepancy while researching a modification. This condition has existed since 1987. The licensee informed the NRC Resident Inspector. |
| Where | |
|---|---|
Perry  Ohio (NRC Region 3) | |
| Reporting | |
| Other Unspec Reqmnt | |
| LER: | 05000440/LER-2006-003 |
| Time - Person (Reporting Time:+-1.18 h-0.0492 days <br />-0.00702 weeks <br />-0.00162 months <br />) | |
| Opened: | Tony Kledzik 17:19 May 4, 2006 |
| NRC Officer: | Steve Sandin |
| Last Updated: | May 4, 2006 |
| 42552 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 507182015-01-06T21:30:0006 January 2015 21:30:00
[Table view]Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification Made to Offsite Government Agency ENS 487692013-02-19T18:03:00019 February 2013 18:03:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xii), Transport of a Contaminated Person Offsite Transport of Potentially Contaminated Worker and Subsequent Fatality ENS 485442012-06-03T05:00:0003 June 2012 05:00:00 Other Unspec Reqmnt Discovery of After-The-Fact Emergency Condition (Unusual Event) ENS 473662011-10-21T21:20:00021 October 2011 21:20:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Fuel Oil Spill ENS 488942010-11-17T04:00:00017 November 2010 04:00:00 Other Unspec Reqmnt After the Fact Discovery of an Unusual Event Entry Condition ENS 463742010-10-28T21:51:00028 October 2010 21:51:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Sodium Hypochlorite Leak from Underground Piping ENS 436532007-09-19T19:25:00019 September 2007 19:25:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of Unknown Discharge and 24 Hour Report Per Appendix B of Operating License ENS 425522006-05-04T18:30:0004 May 2006 18:30:00 Other Unspec Reqmnt 24-Hour Condition of License Report Involving Fire Protection Plan Violation ENS 422722006-01-18T15:00:00018 January 2006 15:00:00 Other Unspec Reqmnt 24-Hour Condition of License Report Involving Fire Protection Program Non-Compliance ENS 408212004-06-16T18:00:00016 June 2004 18:00:00 Other Unspec Reqmnt 24 Hour Notification of Plant Exceeding Its Power Limit 2015-01-06T21:30:00 | |
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