ENS 42178

v t e ENS Event
08:24 Nov 30, 2005
Title	Inverter Inoperable for Greater than Allowed Time Per Technical Specifications
Event Description	This report is being made pursuant to the requirements of License Condition 2.G of the Seabrook Station Operating License. Inverter 1F was inoperable for greater than the 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> allowed by Technical Specification 3.8.3.1.h. The inverter was inoperable for a total of 35 hours4.050926e-4 days <br />0.00972 hours <br />5.787037e-5 weeks <br />1.33175e-5 months <br /> 59 minutes. The inverter was declared to be inoperable at 0323 on November 29, 2005 and was not returned to operable status until 1522 on November 30, 2005, this exceeded the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> TS limit. The NRC approved a Notice of Enforcement Discretion at 0220 on November 30, 2005, which allowed an extension of 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> (until 2123 11/30/05). The inverter was declared operable prior to the expiration of the extension. This event will be documented in a License Event Report pursuant to the requirements of 10CFR50.73. The licensee notified the NRC Resident Inspector.

ENS 42178 +/-
Where
Seabrook New Hampshire (NRC Region 1)
Reporting

Other Unspec Reqmnt
Time - Person (Reporting Time:+8.83 h0.368 days <br />0.0526 weeks <br />0.0121 months <br />)
Opened:	Ron Strickland 17:14 Nov 30, 2005
NRC Officer:	Arlon Costa
Last Updated:	Nov 30, 2005
42178 - NRC Website
v • d • e

v t e Emergency Notification System
Seabrook with Other Unspec Reqmnt
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