ENS 43892
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ENS Event | |
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00:12 Jan 11, 2008 | |
Title | Voiding Discovered in High Head and Intermediate Head Si Common Suction |
Event Description | Both centrifugal charging pumps and both safety injection pumps [were] declared inoperable due to 5% to 7% voiding identified in a portion of common suction piping. [The] pumps were inoperable for 27 minutes. [The] line was vented to remove [the] void and [the] pumps restored to operable. (These pumps are the High Head and Intermediate Head Emergency Core Cooling Pumps.)
The source of the voiding is not understood and is under investigation. All systems functioned as required. R4DO (Bywater) notified. The licensee has notified the NRC Resident Inspector.
Wolf Creek engineering evaluated the effects of the voids found in the common suction piping for the high head and the intermediate head emergency core cooling pumps. The pumps and their systems would have been able to perform their intended safety functions. The licensee will notify the NRC Resident Inspector. Notified R4DO (Cain). |
Where | |
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Wolf Creek Kansas (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+-3.63 h-0.151 days <br />-0.0216 weeks <br />-0.00497 months <br />) | |
Opened: | James M. Kuras 20:34 Jan 10, 2008 |
NRC Officer: | Karl Diederich |
Last Updated: | Mar 7, 2008 |
43892 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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