Finding | |
|---|---|
| Title | Inappropriate Procedural Guidance Resulted in Loss of Scram Function and Failure to Enter Technical Specification Limiting Condition for Operation |
| Description | The inspectors identified a finding of very low safety significance (Green) and a non-cited violation of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the failure to have procedures appropriate to the circumstance for testing the main steam isolation valve (MSIV) and turbine stop valve (TSV) closure functions. Specifically, STP 3.3.1.117, MSIV Functional Test, and STP 3.3.1.119, Main Turbine Stop and Combined Intermediate Valves Test, directed the use of a reactor protection system test box which disabled the MSIV and the TSV closure automatic reactor scram functions while testing specific combinations of MSIVs and TSVs and failed to require entry into appropriate Technical Specification Limiting Condition for Operation action statements. |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2018002 Section 4OA3 |
| Date counted | Jun 30, 2018 (2018Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | C Norton R Stone J Beavers T Nakanishi V Myers K Stoedter |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V Technical Specification |
| CCA | H.1, Resources |
| INPO aspect | LA.1 |
| ' | |
Finding - Duane Arnold - IR 05000331/2018002 | |||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2018Q2
Self-Identified List (Duane Arnold)
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