05000247/FIN-2015007-04
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Finding | |
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Title | Less than adequate corrective actions associated with an evaluation of the seismic adequacy of a 138KV transmission tower located near the Unit 2 EDG building. |
Description | The team identified a finding of very low safety significance involving a non-cited violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, because Entergy did not promptly identify and correct a condition adverse to quality. Specifically, in April 2002, Entergy initiated a corrective action condition report (CR) to evaluate and document the seismic adequacy of a 138KV transmission tower, located in close proximity to the Unit 2 emergency diesel generator (EDG) building; however, Entergy staff closed the CR without adequately evaluating and documenting the seismic qualification concern. Entergys short-term corrective actions included initiating a corrective action CR and performing a seismic qualification evaluation. The team determined that the inadequate resolution of the condition adverse to quality is a performance deficiency that was within Entergys ability to foresee and correct. The performance deficiency was determined to be more than minor in accordance with IMC 0612, Power Reactor Inspection Reports, Appendix B, and Appendix E, example 3j, because the engineering calculation error resulted in a condition where there was a reasonable doubt on the operability of a system. In addition, the performance deficiency was associated with the protection against external factors (seismic) attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems (the EDGs, in particular) that respond to initiating events to prevent undesirable consequences. The team evaluated the finding in accordance with IMC 0609, Appendix A, The Significance Determination Process for Findings at Power, Exhibit 2 Mitigating Systems Screening Questions. The finding was determined to be of very low safety significance because it was a qualification deficiency confirmed not to result in a loss of operability. The finding has a cross-cutting aspect in the area of Human Performance, Documentation, because Entergy did not create and maintain complete, accurate, and up-to-date documentation. Specifically, Entergy did not create and maintain complete, accurate, and up-to-date design basis documentation to ensure that an adverse seismic II/I interaction would not result in the loss of the EDG safety function following a seismic event. |
Site: | Indian Point |
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Report | IR 05000247/2015007 Section 1R21 |
Date counted | Sep 30, 2015 (2015Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.21 |
Inspectors (proximate) | D Werkheiser G Nicely J Ayala J Brand J Schoppy M Orr M Yeminy P Krohn |
Violation of: | 10 CFR 50 Appendix B Criterion XVI |
CCA | H.7, Documentation |
INPO aspect | WP.3 |
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Finding - Indian Point - IR 05000247/2015007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Indian Point) @ 2015Q3
Self-Identified List (Indian Point)
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