05000313/FIN-2013012-01
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Finding | |
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| Title | Failure to Adequately Develop and Implement Adequate Procedural Controls to Remediate the Anticipated Effects of Internal Flooding for Either Unit |
| Description | The inspectors reviewed a self-revealing, non-cited violation of Unit 1 Technical Specification 5.4.1.a and Unit 2 Technical Specification 6.4.1.a, involving the licensees failure to develop and implement procedural controls for response to internal flooding. Specifically, the licensee did not incorporate any instructions for the operation of the permanently installed temporary fire pump into procedures, which resulted in flooding due to the ruptured fire main header and not securing the temporary fire pump for approximately 50 minutes. The licensees corrective actions included changing Checklist 1104.032, Fire Protection Systems, Revision 76, to include guidance for securing the temporary fire pump in the event of a leak or rupture in the fire main header and provided personnel training on this change. This issue was entered into the corrective action program as Condition Reports CR-ANO-C-2013-01072 and CR ANO-C-2013-01962. The inspectors determined that the licensees failure to develop and implement adequate procedural controls for the permanently installed temporary fire pump was a performance deficiency. The performance deficiency was more than minor because it was associated with the procedural quality attribute of the mitigating systems cornerstone and affected the cornerstones objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e. core damage). Specifically, if the necessary flood prevention/mitigation actions cannot be completed in the time required, much of the stations accident mitigation equipment could be adversely impacted. Unit 1 Analysis: Inspection Manual Chapter 0609, Attachment 0609.04, Initial Characterization of Findings, dated June 19, 2012, Table 3, Section A, directs the user to Appendix G. The inspectors used Inspection Manual Chapter 0609, Appendix G, Attachment 1, Shutdown Operations Significance Determination Process Phase 1 Operational Checklists for Both PWRs and BWRs, dated May 25, 2004, Checklist 4, to evaluate the significance of the finding. The inspectors determined that the finding was of very low safety significance (Green) because the finding did not: (1) increase the likelihood of a loss of reactor coolant system inventory, (2) degrade the licensees ability to terminate a leak path or add reactor coolant system inventory when needed, or (3) degrade the licensees ability to recover decay heat removal once it is lost. Unit 2 Analysis: Inspection Manual Chapter 0609, Attachment 0609.04, Initial Characterization of Findings, dated June 19, 2012, Table 3, Section E, Step 2, directs the user to Appendix F, Fire, Protection Significance Determination Process, dated September 20, 2013. The inspectors used Appendix F, to evaluate the significance of the finding. The finding involved a fixed fire protection system and the fire water supply (temporary fire pump). The finding was screened against the qualitative screening question in Appendix F, Task 1.3.1 and the inspectors determined it was of very low safety significance (Green), because the reactor was able to reach and maintain safe shutdown. The finding had a cross-cutting aspect in area of the human performance associated with documentation, because the licensee failed to create and maintain complete, accurate, and up-to-date documentation for the use of the temporary fire pump [H.7] (Section 4OA3.1). |
| Site: | Arkansas Nuclear  |
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| Report | IR 05000313/2013012 Section 4OA3 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | B Latta G Werner J Melfi L Willoughby N Okonkwo |
| Violation of: | Technical Specification - Procedures Technical Specification |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Arkansas Nuclear - IR 05000313/2013012 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Arkansas Nuclear) @ 2014Q1
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