05000266/FIN-2010002-02
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Finding | |
|---|---|
| Title | Inappropriate Application of A Dedicated Operator During A System Venting Surveillance |
| Description | A finding of very low safety significance and associated Non-Cited Violation of 10 CFR 50.65(a)(4) was identified by the inspectors for the failure to properly assess risk that resulted from risk-significant maintenance being performed on the residual heat removal, safety injection, and containment spray systems. Specifically, the licensee inappropriately applied criteria for the use of a dedicated operator to meet availability requirements. As part of its corrective actions, the licensee stopped work that required the use of a dedicated operator pending further evaluation. The issue was more than minor because the licensees risk assessment for January 12, 2010, failed to consider multiple systems unavailable during maintenance. Specifically, the failure to account for the unavailability of the residual heat removal, safety injection, and containment spray systems, resulted in an inadequate daily risk assessment and could affect the unavailability time of this system in related performance and maintenance rule indicators. The inspectors evaluated the finding using the Significance Determination Process in accordance with IMC 0609, Significance Determination process, Attachment K, Maintenance Risk Assessment and Risk Management Significance Determination Process, dated May 19, 2005, and determined the issue screened as having very low safety significance, because the incremental conditional core damage probability was less than 1E-6 due to the test condition lasting only four hours. This finding had a cross-cutting aspect in human performance, decision-making, because the licensee did not have a process or use a systematic approach regarding facets of a dedicated operator (H.1(a)). |
| Site: | Point Beach  |
|---|---|
| Report | IR 05000266/2010002 Section 1R13 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | A Dahbur J Bozga J Gilliam J Jandovitz M Kunowski M Phalen M Thorpe Kavanaugh N Feliz Adorno P Cardona Morales R Edwards R Ruiz R Winter S Burton T Bilik |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Point Beach - IR 05000266/2010002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Point Beach) @ 2010Q1
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