05000423/FIN-2014005-01
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Finding | |
|---|---|
| Title | Failure to Review Additional Failures Against the SLCRS (a)(1) Monitoring Plan |
| Description | The inspectors identified a Green NCV of 10 CFR 50.65 (a)(1) for the failure to determine if the goals or corrective actions for the (a)(1) monitoring plan for the supplementary leak collection and release system (SLCRS) should be adjusted following an additional failure of the auxiliary building ventilation system in July 2014. ER-AA-MRL-100, Implementing Maintenance Rule, states that when a goal is not met, the system engineer shall obtain expert panel review and approval of the goal not met and appropriateness of the new goal. This had not happened at the conclusion of the inspection period. Dominion entered the issue into the CAP as CR528856 and CR554215. The inspectors determined that not evaluating the SLCRS (a)(1) monitoring plan after the July 2014 failure as required by 10 CFR 50.65 was a performance deficiency which is more than minor because it would affect the Barrier Integrity cornerstone structure, system, and component (SSC) and barrier performance attribute due to the damper failures. Maintenance rule failures of a system in (a)(1) monitoring status need to be evaluated for additional failure mechanisms not covered by the existing monitoring plan. The inspectors evaluated the significance of the finding using IMC 0609, Appendix A, Significance Determination Process for Findings At-Power, and screened it to Green using Exhibit 3, section B because the finding only represented a potential degradation of the radiological barrier function provided for the auxiliary building. The inspectors determined this issue had a cross-cutting aspect in the area of Problem Identification and Resolution, Resolution, where the organization takes effective corrective actions to address issues in a timely manner commensurate with their safety significance. As stated in NUREG-2165, PI.3, Example 2, Deferrals of corrective actions are minimized; when required, due dates are extended using an established process that appropriately considers safety significance. PIAA- 200, Corrective Action, requires an assessment of risk and vulnerabilities associated with extending corrective actions. Dominion did not assess the risk of extending the maintenance rule evaluation (MRE) as it related to the implementation of the maintenance rule and improperly allowed six extensions of the assignment. |
| Site: | Millstone  |
|---|---|
| Report | IR 05000423/2014005 Section 1R12 |
| Date counted | Dec 31, 2014 (2014Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | B Fuller B Haagensen E Burket H Gray H. Anagnostopoulus J Ambrosini J D'Antonio L Mckown N Floyd R Mckinley |
| Violation of: | 10 CFR 50.65(a)(1) 10 CFR 50.65 |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
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Finding - Millstone - IR 05000423/2014005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2014Q4
Self-Identified List (Millstone)
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