05000368/FIN-2016009-04
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Finding | |
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| Title | Failure to Adequately Establish Ignition Frequencies for the Risk-Informed Fire Protection Program |
| Description | The team identified two examples of a Severity Level IV non-cited violation of License Condition 2.C(3)(b), Fire Protection, for the licensees failure to properly implement their risk-informed fire protection program and accurately capture component ignition frequencies in their fire probabilistic risk assessment. Specifically, the component ignition frequencies for air compressors and ventilation equipment were found to be lower than expected because the licensee misapplied the guidance in NUREG/CR-6850. The licensee entered this issue into their corrective action program as Condition Reports CR ANO-C-2016-2600, CR-ANO-C-2016-2528, and CR-ANO-2-2016-02356, with the intent to perform an extent of condition relating to other potential components that are misclassified in the fire ignition frequency analysis, correct the fire Ignition frequency report and the associated Fire Probabilistic Risk Assessment model calculations to incorporate the correct ignition frequency and the appropriate scenarios. The licensees failure to adequately implement the prescribed guidance in NUREG/CR-6850 to estimate the ignition frequencies for their risk-informed fire protection program was a performance deficiency. The performance deficiency was minor because the answer to all the IMC 0612, Appendix B, more than minor questions was No. The team determined that this issue was a traditional enforcement violation because it impacted the regulatory process when the only NRC-approved framework for conversion to NFPA 805 was not fully followed. The NRC determined that this violation was associated with a minor performance deficiency. The team determined that this violation was a Severity Level IV in the traditional enforcement process when comparing it to the violation examples in Section 6.1, Reactor Operations, of the NRC Enforcement Policy, specifically noting it was similar to Example 6.1.d.4 for failing to adequately assess the baseline risk of plant operations associated with implementation of a risk-informed program (NFPA 805) such that the program was implemented inappropriately. The finding did not have a cross-cutting aspect because traditional enforcement violations are not assessed for cross-cutting aspects. |
| Site: | Arkansas Nuclear  |
|---|---|
| Report | IR 05000368/2016009 Section 1R05 |
| Date counted | Jun 30, 2016 (2016Q2) |
| Type: | TEV: Severity level IV |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | G Pick G Werner H Barrett J Mateychick N Okonkwo R Deese S Alferink S Makor |
| Violation of: | License Condition - Fire Protection |
| INPO aspect | |
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Finding - Arkansas Nuclear - IR 05000368/2016009 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Arkansas Nuclear) @ 2016Q2
Self-Identified List (Arkansas Nuclear)
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