Finding | |
|---|---|
| Title | Inadequate Functionality Assessment Associated with the Emergency Excess Letdown Flowpath |
| Description | The inspectors identified a Green finding and associated non-cited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, when the licensee failed to adequately implement the operability determination and functionality assessment procedure. Specifically, the licensee failed to document a functionality assessment of sufficient scope to address the capability of a safety-related excess letdown heat exchanger to pressurizer relief tank isolation valve and the excess letdown system to perform their specified safety functions, which resulted in the licensee failing to recognize that two independent Technical Requirements Manual required boration injection subsystems were not functional. |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2018001 Section 1R15 |
| Date counted | Mar 31, 2018 (2018Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | D Dodson F Thomas D Bradley N Taylor |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
| ' | |
Finding - Wolf Creek - IR 05000482/2018001 | |||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2018Q1
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