ENS 42929: Difference between revisions

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| event date = 10/24/2006 01:42 CDT
| event date = 10/24/2006 01:42 CDT
| last update date = 11/10/2006
| last update date = 11/10/2006
| title = High Pressure Core Spray (Hpcs) Declared Inoperable For Approx. 3.4 Hours
| title = High Pressure Core Spray (Hpcs) Declared Inoperable for Approx. 3.4 Hours
| event text = At 0142 on October 24, 2006, while aligning the High Pressure Core Spray system for surveillance testing of the Reactor Core Isolation Cooling System Storage Tank Level instrumentation, 1E22-F015, the Suppression Pool suction valve for the High Pressure Core Spray pump, failed to stroke fully open. High Pressure Core Spray was declared inoperable as a result.  This event is considered a loss of a single train system needed to mitigate the consequences of an accident.
| event text = At 0142 on October 24, 2006, while aligning the High Pressure Core Spray system for surveillance testing of the Reactor Core Isolation Cooling System Storage Tank Level instrumentation, 1E22-F015, the Suppression Pool suction valve for the High Pressure Core Spray pump, failed to stroke fully open. High Pressure Core Spray was declared inoperable as a result.  This event is considered a loss of a single train system needed to mitigate the consequences of an accident.
The High Pressure Core Spray system was restored to an operable condition at 0506 on October 24, 2006 after the suction valve was successfully stroked open and the HPCS suction source was aligned to the Suppression Pool in accordance with Technical Specification Limiting Condition for Operation 3.5.1.  The cause of the event is currently under investigation.
The High Pressure Core Spray system was restored to an operable condition at 0506 on October 24, 2006 after the suction valve was successfully stroked open and the HPCS suction source was aligned to the Suppression Pool in accordance with Technical Specification Limiting Condition for Operation 3.5.1.  The cause of the event is currently under investigation.

Latest revision as of 21:17, 1 March 2018

ENS 42929 +/- *RETRACTED*
Where
Clinton Constellation icon.png
Illinois (NRC Region 3)
Reporting
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+2.43 h0.101 days <br />0.0145 weeks <br />0.00333 months <br />)
Opened: Pat Ryan
09:08 Oct 24, 2006
NRC Officer: John Mackinnon
Last Updated: Nov 10, 2006
42929 - NRC Website
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