05000331/FIN-2015001-03
From kanterella
Jump to navigation
Jump to search
Finding | |
---|---|
Title | Licensee-Identified Violation |
Description | Duane Arnold TS 5.4, Procedures, Section 5.4.1.a requires, in part, that written procedures shall be established, implemented, and maintained covering the applicable procedures recommended in Regulatory Guide 1.33, Revision 2, Appendix A, February 1978. Regulatory Guide 1.33, Revision 2, Appendix A, contains, in part under Section 8.b(2)(t), surveillance test procedures for inspection of the reactor coolant system pressure boundary. Contrary to the above, on November 8, 2014, the licensee failed to properly implement surveillance test procedure (STP) 3.10.102, Non Nuclear Heat Class 1 Ten Year System Leakage Pressure Test, Revision 32. Specifically, during the Fall 2014 refueling outage, licensee personnel identified leakage during visual undervessel inspections per STP 3.10.102. Although several CRs were generated to capture the identified leakage locations and approximate leakage rates from control rod drive mechanism (CRDM) flanges, the personnel failed to fully implement STP 3.10.102, Attachment 3 requirements to perform a detailed inspection of the associated CRDM flanges to identify the leakage source and to verify pressure boundary integrity. Had this identification/verification been performed, STP 3.10.1-02, Attachment 3, further required implementation of GMPTEST66, CRD (**-**) Troubleshooting Procedure, Revision 8, for CRDM flange leakage. Because CRs were written, the licensee personnel considered the under-vessel inspection results satisfactory and moved forward in the STP. Upon further review of the completed STP, the licensee identified that required detailed inspections were not performed for the CRDM flange leaks. The licensee entered the issue into the CAP and successfully re-performed STP 3.10.102 after resolving the leakage issues. Because the inspectors answered No to all questions under Exhibit 4 of IMC 0609, Appendix G, Attachment 1, Shutdown Operations Significance Determination Process Phase 1 Initial Screening and Characterization of Findings, the finding screened as very low safety significance (Green). The above issue was documented in the licensees CAP as CR 02006364. Corrective actions included a revision to STP 3.10.102 to more clearly define under-vessel visual inspection requirements. |
Site: | Duane Arnold |
---|---|
Report | IR 05000331/2015001 Section 4OA7 |
Date counted | Mar 31, 2015 (2015Q1) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | D Szwarc J Beavers J Mcghee J Steffes L Haeg M Garza M Jeffers R Elliott R Ng V Myers |
Violation of: | Technical Specification - Procedures Technical Specification |
INPO aspect | |
' | |
Finding - Duane Arnold - IR 05000331/2015001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Duane Arnold) @ 2015Q1
Self-Identified List (Duane Arnold)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||