05000454/FIN-2011005-05
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Technical Specification 5.5.1 states that the ODCM shall contain the methodology and parameters used in the calculation of offsite doses resulting from radioactive gaseous and liquid effluents, and in the calculation of gaseous and liquid monitoring alarm and trip setpoints. Contrary to the above, on August 26, 2010, the licensee identified a potential for non-conservative alarm setpoints for effluent monitors. Subsequently, the licensee calculated new setpoints for these monitors using the methodology prescribed in the ODCM and determined that the previous alarm setpoints were incorrectly established and were non-conservative (too high). The inspectors determined that this finding was of more than minor significance because it was similar to Example 6.c in IMC 0612, Appendix E, Example of Minor Issues. Specifically, the effluent monitors with its alarm set points would have failed to perform its intended function (i.e., trip or isolation function) to prevent an instantaneous effluent release in excess of the applicable TS instantaneous dose rate limits for gases. In accordance with IMC 0609, Appendix D, Public Radiation Safety, the inspectors determined the violation to be of very low safety significance, (Green) because the dose impact to a member of the public from the radiological release was less than the dose values in Appendix I to 10 CFR Part 50 and 10 CFR 20.1301(e). This violation of TS 5.5.1 is being treated as a NCV consistent with Section 2.3.2 of the NRC Enforcement Policy. The licensee entered this issue into their CAP as IR 1106461. |
| Site: | Byron  |
|---|---|
| Report | IR 05000454/2011005 Section 4OA7 |
| Date counted | Dec 31, 2011 (2011Q4) |
| Type: | NCV: Green |
| cornerstone | Pr Safety |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Jickling R Ng C Thompson B Bartlett J Robbins J Cassidy B Palagi J Benjamin E Duncan J Dalzell J Nance |
| INPO aspect | |
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Finding - Byron - IR 05000454/2011005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Byron) @ 2011Q4
Self-Identified List (Byron)
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