05000255/FIN-2011014-01
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Finding | |
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Title | Failure to Report a 10 CFR 50.72 Notification for an 8-hour Non-Emergency Report |
Description | A Severity Level (SL) IV non-cited violation of 10 CFR 50.72(b)(3)(ii)(B) was identified by the inspectors for the failure to notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event or condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety. Specifically, the licensee failed to report on September 26, 2011, within eight hours an Appendix R noncompliance that was identified in DC shunt trip Breakers 72-01 and 72-02 for the 125-Volt DC system following the reactor trip that occurred on September 25, 2011. The licensees preliminary analysis demonstrated that if a shunt trip breaker automatically opened due to fire induced fault currents, then the licensees Appendix R credited equipment may have been lost unexpectedly, an unanalyzed condition that significantly degrades plant safety. This issue was documented in the licensees corrective action program as CR-PLP-2011-05263 and at the end of the special inspection, the licensee continued to perform a causal evaluation in order to develop corrective actions. As a remedial corrective action, the licensee made the required event notification in Event Notification Number 47322 on October 5, 2011. The inspectors determined that the finding was more than minor in accordance with IMC 0612, Power Reactor Inspection Reports, Appendix B, Issue Screening, dated December 24, 2009, Block 7, Figure 2, because reporting failure violations are considered to be violations that potentially impact the regulatory process and are dispositioned using traditional enforcement. The underlying technical issue was required to be evaluated using the SDP and is assessed separately in Section 4OA5.6.b.1 of this report as a separate Green finding. In accordance with Section 6.1.d.2 of the NRC Enforcement Policy, this violation was categorized as Severity Level IV because the underlying technical issue was evaluated by the SDP and determined to be of very low safety significance. In addition, NRC Enforcement Policy, dated July 12, 2011, Section 6.9.d.9, states, in part, that an example of an SL IV violation is the licensees failure to make a report required by 10 CFR 50.72. Cross-cutting aspects were evaluated in the underlying ROP finding |
Site: | Palisades ![]() |
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Report | IR 05000255/2011014 Section 4OA5 |
Date counted | Dec 31, 2011 (2011Q4) |
Type: | TEV: Severity level IV |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 93812 |
Inspectors (proximate) | A Dahbur A Scarbeary J Giessner R Krsek |
Violation of: | Pending |
INPO aspect | |
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Finding - Palisades - IR 05000255/2011014 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palisades) @ 2011Q4
Self-Identified List (Palisades)
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