05000331/FIN-2010008-02
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Finding | |
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| Title | |
| Description | The inspectors identified a NCV of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, having very-low-safety significance for the failure to take corrective actions in response to a previous NCV concerning the residual heat removal pump seal water cooling requirements. Specifically, the licensee had not performed a new evaluation under 10 CFR 50.59 to address the previous NRC concerns associated with a change to eliminate the need for residual heat removal pump seal water cooling; had not corrected the updated final safety analysis after learning that the previous 10 CFR 50.59 evaluation was not technically adequate to support the change; and had not replaced the seal with ones designed for higher temperatures. The licensee entered this issue into its corrective action program. The performance deficiency was determined to be more than minor because, if left uncorrected, it had the potential to lead to a more significant safety concern. Specifically, termination of flow to the RHR pump seal water coolers would result in operation outside the seals design. The finding screened as very-low-safety significance because cooling water had been provided to the seals for the residual heat removal pumps. The inspectors did not identify a cross-cutting aspect associated with this finding because the finding was not confirmed to reflect current performance due to the age of the performance deficiency. (1R07.1.b(2)) |
| Site: | Duane Arnold  |
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| Report | IR 05000331/2010008 Section 1R07 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.07 |
| Inspectors (proximate) | N Feliz-Adomo A Stone |
| INPO aspect | |
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Finding - Duane Arnold - IR 05000331/2010008 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2010Q2
Self-Identified List (Duane Arnold)
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