05000413/FIN-2010002-01
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | The following violation of very low safety significance (Green) was identified by the licensee and is a violation of NRC requirements which met the criteria of the NRC Enforcement Policy, for being dispositioned as a Non-Cited Violation. 10 CFR 50, Appendix B, Criterion XVI, requires that conditions adverse to quality, such as failures, malfunctions, deficiencies, deviations, defective material and equipment, and nonconformances are promptly identified and corrected. Contrary to the above, from May 1997 to July 2009, CACST vortexing, a condition adverse to quality, was not promptly identified and corrected. The licensee determined that CACST vortexing, identified in 1997, could result in air entrainment and subsequent damage to the CA pumps during high flow conditions. The licensee recognized that the 1997 operability determination lacked sufficient rigor and initiated an action for engineering to quantify the amount of air that would reach the pumps, which led to the discovery of the deficiency. As an immediate corrective action, the licensee isolated the CACST from the CA pumps, removing it as a suction source. The inspectors determined that the finding was of very low safety significance (Green) using the site specific Phase 2 Risk-Informed Inspection Notebook for main steam line break scenarios per IMC 0609, Appendix A, Determining the Significance of Reactor Inspection Findings for At-Power Situations. A Phase 3 risk analysis performed by a Senior Risk Analyst confirmed this result. This issue was documented in the licensees corrective action program as PIP C-09-4202 |
| Site: | Catawba  |
|---|---|
| Report | IR 05000413/2010002 Section 4OA7 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | J Bartley G Laska R Cureton A Hutto M Coursey E Stamm |
| INPO aspect | |
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Finding - Catawba - IR 05000413/2010002 | |||||||||||||||||||||||||||||||||||||||||||
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Finding List (Catawba) @ 2010Q1
Self-Identified List (Catawba)
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