05000259/FIN-2011011-05
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Finding | |
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| Title | |
| Description | NRC Inspection Report 05000259/2011008 (ML111290500) documents additional reviews conducted regarding the adequacy of the IST program at BFN. Specifically, the NRC documented that TVAs failure to implement in IST program in accordance with the American Society of Mechanical Engineer (ASME), Code for Operation and Maintenance of Nuclear Power Plants (OM Code), 1995 Edition, 1996 Addendum, Section ISTC 4.1, precluded the timely identification that the RHR Loop II subsystem was unable to fulfill its safety function due to a failure of the LPCI Outboard Injection Valve 1-FCV-74-66. The NRC concluded that TVAs IST program inadequacy was well within its purview, and represents a performance deficiency. Details of the NRCs final determination regarding the performance deficiency are discussed in Enclosure 2. In a letter dated June 8, 2011, TVA appealed the final significance determination of the Red finding. This letter indicated that other licensees understand and implement ASME Operation and Maintenance Code Section ISTC 4.1 in a similar manner to TVA. The NRC recognized the potential generic implications associated with this issue. In the August 16, 2011, Letter to TVA, the NRC states: With respect to the IST performance deficiency described in our May 9 inspection report, the NRC determined that the requirements of the ASME OM Code concerning the verification of valve obturator position warrant additional clarification due to the diversity of views among NRC staff and industry experts. As a result, the NRC staff will continue to pursue generic resolution of the OM code testing issues separate from the resolution of this finding. Until the ASME OM Code testing issues are resolved and there is clarification and guidance on the requirements of ASME OM Code Section ISTC 4.1, this issue is considered an URI. Once resolution has been determined, TVAs IST program will be re-evaluated to determine whether it met ASME OM Code Section ISTC 4.1 requirements and whether a performance deficiency exists or not. (URI 05000259/2011011; Verification of Valve Obturator as Required by ASME OM Code) |
| Site: | Browns Ferry  |
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| Report | IR 05000259/2011011 Section 4OA4 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 95003 |
| Inspectors (proximate) | R Orlikowski J Nadel L Lake E Huang R Croteau M Farnanc Evenc Moore E Guthrie J Eargle J Heinly R Skokowski |
| INPO aspect | |
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Finding - Browns Ferry - IR 05000259/2011011 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2011Q3
Self-Identified List (Browns Ferry)
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