05000528/FIN-2010003-01
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Finding | |
|---|---|
| Title | Inadequate Postmaintenance Test Results with an Inoperable containment |
| Description | A self-revealing noncited violation of Technical Specification 5.4.1, \"Procedures,\" was identified for the failure of maintenance personnel to follow work instructions during the 1R15 refueling outage. Specifically, on May 2, 2010, maintenance personnel were performing maintenance on the containment equipment hatch hoist and failed to ensure an adequate postmaintenance test was completed. On May 8, maintenance personnel discovered that the hoist would not completely lower and that they could not position the containment equipment hatch due to a malfunctioning lower limit switch. The licensee readjusted the malfunctioning limit switch for the west hoist to restore the ability to close the containment hatch and performed a proper postmaintenance test as a corrective action and entered this issue into the licensee\'s corrective action program as Palo Verde Action Request 3478220. The finding was more than minor because it affected the configuration control attribute of the Barrier Integrity Cornerstone, and affected the cornerstone objective to provide reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events. Using Manual Chapter 0609, Appendix H, \"Containment Integrity Significance Determination Process,\" Figure 6.2, the finding was determined to have very low safety significance because the finding occurred in a time window greater than 8 days after the start of the outage. This finding has a crosscutting aspect in the area of human performance associated with the work practices component because the licensee failed to ensure personnel do not proceed in the face of uncertainty or unexpected circumstances [H.4.(a)] |
| Site: | Palo Verde  |
|---|---|
| Report | IR 05000528/2010003 Section 1R12 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | L Ricketson R Lantz R Treadway L Carson J Bashore S Makor M Catts M Baquera I Anchondo |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Palo Verde - IR 05000528/2010003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palo Verde) @ 2010Q2
Self-Identified List (Palo Verde)
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