05000424/FIN-2011002-01
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Finding | |
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| Title | Failure to Perform General Visual Examination of Containment Metallic Liner in Reactor Vessel Cavity underneath the Reactor Vessel |
| Description | The NRC identified a Green NCV of 10 CFR Part 50.55a, Codes and Standards, for the licensees failure to conduct a general visual examination of the Units 1 and 2 containment metallic liner around the reactor cavity underneath the reactor vessel. The licensee took corrective actions to conduct the required visual examinations in Unit 1, including ultrasonic testing (UT) thickness measurements to evaluate the condition of the liner, and initiated action items to examine the same area in Unit 2 during the next refueling outage. The licensee initiated Condition Report (CR) 2011104688 to address the issue through the Corrective Action Program (CAP) and conducted the required general visual inspection in Unit 1 containment and found no pitting or cracking in the area examined. In addition, the licensee performed UT thickness measurements in affected areas of the metallic liner to evaluate the liner thickness against the design criteria The licensees failure to conduct a general visual examination of the containment metallic liner in the reactor cavity area underneath the reactor vessel in accordance with the American Society of Mechanical Engineers (ASME) Code,Section XI, Subsection IWE was a performance deficiency. The finding was more than minor because it was associated with the Design Control attribute of the Barrier Integrity Cornerstone and affected the cornerstone objective in that visual inspections of the containment metallic liner were not performed to provide reasonable assurance that the liner remained capable of performing its intended safety function. The finding was of very low safety significance (Green) because the finding did not represent an actual open pathway in the physical integrity of the reactor containment. The finding has a cross-cutting aspect in the operating experience (OE) component of the area of problem identification and resolution because OE was not implemented and institutionalized through station procedures. P.2.b] |
| Site: | Vogtle  |
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| Report | IR 05000424/2011002 Section 1R08 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.08 |
| Inspectors (proximate) | A Nielsen A Sengupta J Rivera Ortiz M Cain R Hamilton R Kellner S Shaeffer T Chandler |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Vogtle - IR 05000424/2011002 | |||||||||||||||||||||||||||||||||||||||||||
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Finding List (Vogtle) @ 2011Q1
Self-Identified List (Vogtle)
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