05000313/FIN-2016007-16
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Finding | |
|---|---|
| Title | Failure to Properly Calibrate Unit 1 Reactor Building Atmospheric Particulate Radiation Monitor RE-7460 |
| Description | The team identified a Green finding and an associated non-cited violation of 10 CFR 20.1501(c) because the licensee failed to ensure that instruments and equipment used for quantitative radiation measurements were calibrated periodically for the radiation measured. Specifically, the licensee did not properly calibrate the Unit 1 Reactor Building Atmospheric Particulate Radiation Monitor RE-7460. The licenses corrective actions, included removing radiation monitor RE-7460 from service, instituting compensatory measures for assessing reactor coolant system leak detection in accordance with Technical Specification 3.4.15, RCS Leakage Detection Instrumentation, and documenting the issue in the corrective action program as condition reports CR-ANO-1-2016-00056 and CR-ANO-1-2016-01087. The failure to properly calibrate radiation monitor RE-7460 was a performance deficiency. The performance deficiency was determined to be more than minor because it was associated with the plant instrumentation attribute of the Occupational Radiation Safety cornerstone and adversely affected the cornerstone objective to ensure adequate protection of the worker health and safety from exposure to radiation from radioactive material. Specifically, the failure to properly calibrate radiation monitor RE-7460 adversely impacted its ability to be used to identify reactor coolant system leakage and the ability to assess radioactive airborne concentrations and dose rates. The finding was evaluated using the significance determination process in accordance with Inspection Manual Chapter 0609, Significance Determination Process, Attachment 0609.04, Initial Characterization of Findings, dated June 19, 2012, and Appendix C, Occupational Radiation Safety Significance Determination Process, dated August 19, 2008. The team determined that the finding was of very low safety significance (Green) because it was not an as-low-as-reasonably-achievable (ALARA) issue, there was no overexposure or substantial potential for an overexposure, and the ability to assess dose was not compromised. This finding had a human performance cross-cutting aspect of Documentation because the licensee failed to create and maintain complete, accurate and up-to-date documentation. Specifically, the licensee personnel failed to translate the vendor manual instruction to ensure the detector was installed against the hard stop so that it was in the correct position to make the calibration valid [H.7]. |
| Site: | Arkansas Nuclear  |
|---|---|
| Report | IR 05000313/2016007 Section 4OA4 |
| Date counted | Mar 31, 2016 (2016Q1) |
| Type: | NCV: Green |
| cornerstone | Or Safety |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 95003 |
| Inspectors (proximate) | B Correll C Osterholtz D Betancourt D Lackey D Willis E Duncan G Hansen J Brand J Dixon J Mateychick L Mckown M Holmberg M Keefe M Phalen N O'Keefe P Mckenna R Alexander R Deese R Kopriva R Kumana S Graves S Morrow S Rich S Smith T Hartman W Sifre Z Hollcraft |
| Violation of: | 10 CFR 20, Standards for Protection Against Radiation 10 CFR 20.1501, Surveys and Monitoring |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Arkansas Nuclear - IR 05000313/2016007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Arkansas Nuclear) @ 2016Q1
Self-Identified List (Arkansas Nuclear)
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