05000335/FIN-2012009-01
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Finding | |
|---|---|
| Title | Failure to Adequately Implement Design Changes Procedure |
| Description | A self-revealing finding with two examples was identified for the licensees failure to adequately implement their design change process for post-modification testing (PMT). In the first example, the PMT procedure was not adequate for post-modification testing of the steam bypass control system (SBCS). In the second example, a PMT was not performed for the new turbine control system (TCS). The licensees failure to implement the requirements of design change procedure EN-AA- 205-1100 in both examples was a performance deficiency. Both examples were more than minor because they were associated with the Initiating Events cornerstone attribute of design control and adversely affected the cornerstone objective in that both resulted in unplanned reactor trips. This finding was assessed using Inspection Manual Chapter 0609, Appendix A, Significance Determination Process for Findings At-Power, Exhibit 1, Initiating Events Screening Questions, and determined to be of very low safety significance (Green). The cause of the SBCS event was related to the cross-cutting aspect of the need to ensure work activities are planned by incorporating risk insights as described in the Work Control component of the Human Performance cross-cutting area H.3(a). The cause of the TCS event was related to the cross-cutting aspect of the need to ensure supervisory and management oversight as described in the Work Practices component of the Human Performance cross-cutting area because station oversight allowed the new TCS to be put in service without the prescribed PMT being performed |
| Site: | Saint Lucie  |
|---|---|
| Report | IR 05000335/2012009 Section 4OA4 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 95002 |
| Inspectors (proximate) | C Rapp R Cureton D Rich A Allen |
| CCA | H.2, Field Presence |
| INPO aspect | LA.2 |
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Finding - Saint Lucie - IR 05000335/2012009 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Saint Lucie) @ 2012Q4
Self-Identified List (Saint Lucie)
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