ENS 48051
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ENS Event | |
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19:46 Jun 27, 2012 | |
Title | Suction Pipe Voiding |
Event Description | On 06/27/2012, it was identified that a void existed in the common suction header for Safety Injection. The void was of the size such that operability was maintained. However, this was nonconforming to the Kewaunee Power Station licensing basis.
At 1446 on 06/27/2012, the Kewaunee Power Station declared both Safety Injection Train A and Safety Injection Train B Inoperable due to venting of the common suction line to remove the void. LCO 3.0.3 was entered as directed by LCO 3.5.2. ECCS Operating. This loss of safety function is reportable under 10CFR50.72(b)(3)(ii)(B). The void in question has been reduced to an acceptable size with the common Safety Injection suction piping full. Both Safety Injection Train A and Safety Injection Train B have been restored to Operable status and LCO 3.0.3 was exited at 1500 on 06/27/2012. The condition was detected by ultrasonic testing as part of a surveillance for RHR pump and valve testing. The NRC Resident Inspector has been notified. |
Where | |
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Kewaunee Wisconsin (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
LER: | 05000305/LER-2012-005 |
Time - Person (Reporting Time:+-2.6 h-0.108 days <br />-0.0155 weeks <br />-0.00356 months <br />) | |
Opened: | Daniel Backus 17:10 Jun 27, 2012 |
NRC Officer: | Joe O'Hara |
Last Updated: | Jun 27, 2012 |
48051 - 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 %) |
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