ENS 41824
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ENS Event | |
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14:17 Jul 7, 2005 | |
Title | License Condition Report Due to Exceeding Technical Specification Inoperability Time |
Event Description | FPL Energy Seabrook Station has discovered that a condition existed that was prohibited by the Technical Specifications. The Train B Containment Building Spray Pump (CBS) was inoperable for a period of time longer than permitted by the Technical Specifications. A failed relay driver board would have prevented the Train B CBS pump from automatically starting in response to high containment pressure. Following an LOP coincident with a high containment pressure, the initial start signal from the Train B EDG emergency power sequencer would not have initiated a CBS pump start, but an automatic start signal generated at a later time in the LOP sequence would have started the pump. The failed relay driver board only inhibited automatic starting of the Train B CBS pump. The Train B EDG remained capable of providing power to other Train B loads including the automatic start of the CBS pump at the later sequence.
This event is being reported in accordance with Seabrook Station Operating License condition 2.G as a failure to operate the facility in accordance with the Technical Specifications. The licensee discovered the condition during surveillance testing and the condition has been repaired. The licensee notified the NRC Resident Inspector. |
Where | |
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Seabrook New Hampshire (NRC Region 1) | |
Reporting | |
Other Unspec Reqmnt | |
Time - Person (Reporting Time:+-1.43 h-0.0596 days <br />-0.00851 weeks <br />-0.00196 months <br />) | |
Opened: | Ken Browne 12:51 Jul 7, 2005 |
NRC Officer: | Bill Huffman |
Last Updated: | Jul 7, 2005 |
41824 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 457382010-02-26T04:15:00026 February 2010 04:15:00
[Table view]Other Unspec Reqmnt Discovery of an After-The-Fact Unusual Event ENS 426842006-06-30T23:49:00030 June 2006 23:49:00 Other Unspec Reqmnt 24 Hour License Condition Report - Main Steam Isolation Valve Inoperable Greater than 4 Hours ENS 426602006-06-22T10:20:00022 June 2006 10:20:00 Other Unspec Reqmnt 24 Hour License Condition Report of Operation in a Condition Prohibited by Technical Specification ENS 423972006-03-08T13:00:0008 March 2006 13:00:00 Other Unspec Reqmnt 24-Hour Condition of License Report Due to Failure to Submit Ts Required Exposure Report ENS 421782005-11-30T08:24:00030 November 2005 08:24:00 Other Unspec Reqmnt Inverter Inoperable for Greater than Allowed Time Per Technical Specifications ENS 418242005-07-07T14:17:0007 July 2005 14:17:00 Other Unspec Reqmnt License Condition Report Due to Exceeding Technical Specification Inoperability Time ENS 415432005-03-29T19:00:00029 March 2005 19:00:00 Other Unspec Reqmnt 24 - Hr Condition of License Report Due to T.S. Not Met ENS 413402005-01-15T05:00:00015 January 2005 05:00:00 Other Unspec Reqmnt Unspecified Requirement ENS 410952004-10-05T22:30:0005 October 2004 22:30:00 Other Unspec Reqmnt One of Two Pressurizer Level Instrumentation Channels Found to Be Inoperable. ENS 408422004-06-25T14:50:00025 June 2004 14:50:00 Other Unspec Reqmnt Plant Exceeded Lco Action Statement Limits 2010-02-26T04:15:00 | |
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