ENS 42684

v t e ENS Event
23:49 Jun 30, 2006
Title	24 Hour License Condition Report - Main Steam Isolation Valve Inoperable Greater Than 4 Hours
Event Description	FPL Energy Seabrook has discovered a condition that was prohibited by the Technical Specifications. This report is being made pursuant to License Condition 2.G of the Seabrook Station Operating License. On July 3 at 0615, it was determined that a MSIV had been inoperable for a period of time longer than allowed by the Technical Specifications. On June 30 at 1949, an alarm was received indicating a problem with the MSIV. A troubleshooting and repair plan was developed and the MSIV repaired on July 1 at 1559. Subsequent examination of the failed control module found that it was nonfunctional and that the MSIV had been inoperable since receipt of the alarm on June 30 at 1949. Since the Technical Specification allowed outage time for an inoperable MSVI is 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, the MSIV being inoperable for approximately 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> constitutes a violation of the Technical Specifications. The Resident Inspector has been notified of this event.

ENS 42684 +/-
Where
Seabrook New Hampshire (NRC Region 1)
Reporting

Other Unspec Reqmnt
Time - Person (Reporting Time:+64.57 h2.69 days <br />0.384 weeks <br />0.0884 months <br />)
Opened:	M. Arsenault 16:23 Jul 3, 2006
NRC Officer:	John Mackinnon
Last Updated:	Jul 3, 2006
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v • d • e

v t e Emergency Notification System
Seabrook with Other Unspec Reqmnt
WEEKMONTHYEAR2010-02-26T04:15:00 [Table view]
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