Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | 10 CFR 50.55a(g)(4) requires, in part, that pressurized water-cooled nuclear power facility components which are classified as ASME Code Class 1, Class 2, and Class 3 must meet the requirements set forth in ASME Section XI. ASME Code,Section XI, Subsection IWB, Article IWB-2500, Table IWB-2500-1, Item B5.10 requires a volumetric examination of all reactor vessel nozzle-to-safe end butt welds NPS 4 or larger each inspection interval. Contrary to this, the licensee failed to achieve the required examination coverage for eight welds during their 2005 examination effort due to a measurement discrepancy. This was identified in the licensees corrective action program as PER 203409. This finding is of very low safety significance because supplemental examinations performed in 2009 revealed no indications in the above welds |
| Site: | Watts Bar  |
|---|---|
| Report | IR 05000390/2009005 Section 4OA7 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | J Nadel M Pribish D Mas-Penaranda R Williams R Monk W Lewis H Gepford E Guthrie |
| INPO aspect | |
| ' | |
Finding - Watts Bar - IR 05000390/2009005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Watts Bar) @ 2009Q4
Self-Identified List (Watts Bar)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||