ENS 44635
ENS Event | |
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01:27 Nov 7, 2008 | |
Title | Tech Spec Required Shutdown Required Due to Failed Surveillance Test |
Event Description | Nine Mile Point (NMP) Unit 1 initiated a Technical Specification (TS) shutdown at 2027.
During a normal Instrumentation Surveillance Test, a relay for Emergency Condenser (ECCS) Initiation failed to meet its acceptance criteria (at 1245). This placed the plant in an action statement that required placing a channel trip in for the affected relay channel in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. To perform the relay replacement NMP Unit 1 entered 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> TS shutdown Limiting Condition of Operation at 1928. At 2027 Shutdown of the plant was initiated by lowering reactor recirculation flow and thus reactor power. At 2031, relay replacement was completed, [at] 2038 plant returned to full power operations. The plant remained in 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> action statement until post maintenance testing was completed at 2124. The licensee notified the NRC Resident Inspector. |
Where | |
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Nine Mile Point New York (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
Time - Person (Reporting Time:+-3.63 h-0.151 days <br />-0.0216 weeks <br />-0.00497 months <br />) | |
Opened: | Quentin J. Hicks 21:49 Nov 6, 2008 |
NRC Officer: | Jason Kozal |
Last Updated: | Nov 6, 2008 |
44635 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 496772013-12-26T18:01:00026 December 2013 18:01:00
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