05000315/FIN-2012003-01
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Finding | |
|---|---|
| Title | Failure to Replace Post-Accident Monitor Displays |
| Description | The inspectors identified a finding of very low safety significance and associated NCV for the failure to establish preventive maintenance schedules. Technical Specification (TS) 5.4.1 requires that written procedures be established, implemented and maintained for activities specified in Regulatory Guide 1.33. Regulatory Guide 1.33, Appendix A, section 9, Procedures for Performing Maintenance, states, in part, that Preventive Maintenance schedules should be developed to specify... inspection or replacement of parts that have a specific lifetime.... The licensee did not develop a maintenance schedule for replacing liquid crystal diodes (LCD) within a manufacturer specified five-year life. Consequently, 14 LCDs failed after about eight years of service and three failures resulted in unplanned Limiting Condition for Operation (LCO) entries. The licensee subsequently replaced the LCDs for safety-related displays and has entered the condition into the corrective action program as AR 2012-5744. The inspectors concluded that the issue was more that minor because it was associated with the Mitigating Systems cornerstone attribute of Design Control. In addition, it adversely affected the cornerstone objective to ensure the availability and reliability of systems that respond to initiating events. Specifically, the failure to establish and implement scheduled replacement of the LCD displays resulted in three unplanned LCO entries for the affected recorders. The inspectors reviewed the finding in accordance with IMC 0609, Attachment 0609.04 Table 4a for the Mitigating Systems Cornerstone and concluded the finding was of very low safety significance because the answer to all four questions for mitigating structures, systems and components and functionality was no. The inspectors concluded that the finding included a cross-cutting aspect in problem identification and resolution, Corrective Action Program, in that the licensee did not take appropriate corrective actions to address safety issues in a timely manner (P.1(d)). Specifically, the licensee did not replace safety-related LCD displays prior to failure until prompted by the Inspectors. |
| Site: | Cook  |
|---|---|
| Report | IR 05000315/2012003 Section 1R15 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | J Lennartz J Ellegood P Laflamme E Santiago |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
| ' | |
Finding - Cook - IR 05000315/2012003 | |||||||||||||||||||||||||||||||||||||
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Finding List (Cook) @ 2012Q2
Self-Identified List (Cook)
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