05000390/FIN-2017004-02
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Finding | |
|---|---|
| Title | Inadequate Procedure for Temporary Configuration Changes |
| Description | A self-revealed NCV of 10 Code of Federal Regulations (CFR) Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified for inadequacies associated with TVA procedure NPG-SPP-09.5, Temporary Modifications Temporary Configuration Changes, Revision 11. Specifically, a procedural exception allowed a temporary configuration change to be installed in the spent fuel pool without a screening in accordance with 10 CFR 50.59, Changes, Tests, and Experiments. The change subsequently caused an inadvertent draining of the level of the spent fuel pool to the point the control room received the low level alarm.The performance deficiency was determined to be more than minor because it was associated with the Barrier Integrity Cornerstone attribute of design control, and it adversely affected the cornerstone objective to provide reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events. The finding affected the common spent fuel pool and the Barrier Integrity Cornerstone while Unit 1 was at power and Unit 2 was in mode 4. For Unit 1, the inspectors determined that this finding was of very low safety significance (Green) because the finding did not result in a loss of spent fuel pool inventory below the minimum analyzed level in the site-specific licensing basis. For Unit 2, the inspectors determined that this finding was of very low safety significance (Green) because it did not involve an actual reduction in function of hydrogen control for PWR ice condenser containments. The finding had a cross-cutting aspect in the Work Management attribute of the Human Performance area as defined in NRC IMC 0310, because the licensee did not implement a process of planning, controlling, and executing work activities such that nuclear safety is the overriding priority. (H.5) |
| Site: | Watts Bar  |
|---|---|
| Report | IR 05000390/2017004 Section 1R18 |
| Date counted | Dec 31, 2017 (2017Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.18 |
| Inspectors (proximate) | A Masters D Lanyi M Riches S Monarque P Cooper W Satterfield J Hamman J Nadel |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V 10 CFR 50.59 |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Watts Bar - IR 05000390/2017004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Watts Bar) @ 2017Q4
Self-Identified List (Watts Bar)
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