05000313/FIN-2011004-08
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Finding | |
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Title | Licensee-Identified Violation |
Description | Title 10 of the Code of Federal Regulation Part 50, Appendix B, Criterion XVI, Corrective Action, requires, in part, that Measures shall be established to assure that conditions adverse to quality, such as failures, malfunctions, deficiencies, deviations, defective material and equipment, and nonconformance are promptly are promptly identified and corrected. Contrary to the above, the licensee failed to promptly identify and correct a condition adverse to quality, associated with protecting and ensuring service water piping integrity from microbiological induced corrosion issues. Specifically, the licensee was aware of microbiological induced corrosion issues but failed to take timely corrective action to repair numerous issues with the service water chemical injection system during the previous year. The licensee also failed to assess the long term, cumulative risk of deciding not to follow their service water pipe replacement program. Both actions constitute a failure to take timely corrective actions resulting in an increase in microbiological induced corrosion induced service water leaks. The inspectors determined this finding to be of very low safety significance, Green, because it: 1) is not a design or qualification deficiency that resulted in loss of operability or functionality; 2) did not represent an actual loss of safety function of a system or train; 3) did not result in the actual loss of one or more trains of non-technical specification equipment designated as risk significant by 10 CFR 50.65 for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; and 4) did not screen as potentially more risk significant due to a seismic, flooding, or severe weather initiating event. This issue was entered into the corrective action program as CR-ANO-C-2011-0336. |
Site: | Arkansas Nuclear |
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Report | IR 05000313/2011004 Section 4OA7 |
Date counted | Sep 30, 2011 (2011Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | A Sanchez J Rotton K Clayton L Ricketson R Azua R Kumana W Schaup |
INPO aspect | |
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Finding - Arkansas Nuclear - IR 05000313/2011004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Arkansas Nuclear) @ 2011Q3
Self-Identified List (Arkansas Nuclear)
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