ENS 47403
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ENS Event | |
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18:30 Nov 2, 2011 | |
Title | Unanalyzed Condition Caused by Non-Conforming Fire Barriers |
Event Description | Ongoing field inspections as a result of Industry Operating Experience have identified certain fire barriers that are not in conformance with required tested configurations. Specifically, some of the flexible conduit that penetrates these barriers has a coating that does not exhibit flame retardant characteristics and therefore does not meet the requirements for fire barriers at Beaver Valley Power Station, Unit 1.
In the event of a postulated fire, this non-conformance has the potential to affect fire barriers separating the two independent trains required for post fire Safe Shutdown equipment. This issue is being reported per 10CFR 50.72(b)(3)(ii)(B). Compensatory actions have been established in accordance with the approved Fire Protection Program. The NRC Resident Inspector has been notified. |
Where | |
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Beaver Valley Pennsylvania (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
LER: | 05000334/LER-2011-001 |
Time - Person (Reporting Time:+2.18 h0.0908 days <br />0.013 weeks <br />0.00299 months <br />) | |
Opened: | David Gibson 20:41 Nov 2, 2011 |
NRC Officer: | Vince Klco |
Last Updated: | Nov 2, 2011 |
47403 - 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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