05000361/FIN-2010004-01
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Finding | |
|---|---|
| Title | Failure to Follow Procedures While Implementing a Design Change |
| Description | The inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the failure of maintenance personnel to follow the requirements of station procedures while performing work on containment sump pump discharge isolation valve 2HV5803. Specifically, on January 21, 2010, while performing scheduled maintenance activities on the valve maintenance personnel identified the need to perform a modification to the electrical wiring of the valve. When the modification was implemented on January 25, 2010, maintenance personnel failed to follow the requirements of procedures SO123-II-15.3, Temporary System Alteration and Restoration Form, Revision 17, and SO123-XXIV-10.1, Preparation, Review, Approval, Issuance, Implementation, and Closure of Engineering Change Packages (NECPs) and Engineering Change Notices (ECNs), Revision 21, and did not have an implementing work order to affect a design change on valve 2HV5803. Planned corrective action is still being evaluated by the licensee. This issue was entered into the licensees corrective action program as Nuclear Notifications NNs 201061230, 200767264 and 200964035. The performance deficiency was determined to be more than minor and is therefore a finding because if left uncorrected, the continued practice of circumventing site procedural requirements by craft personnel during maintenance or design modification work on safety-related equipment would have the potential to leave more risk significant equipment in a degraded or inoperable condition without documentation and without the knowledge and approval of site management and operations personnel. The finding was associated with the design control attribute of the Mitigating Systems Cornerstone. Using the Manual Chapter 0609, Significance Determination Process, Phase 1 Worksheets, the finding was determined to have very low safety significance because the finding: (1) was not a design or qualification issue confirmed not to result in a loss of operability or functionality; (2) did not represent an actual loss of safety function of the system or train; (3) did not result in the loss of one or more trains of nontechnical specification equipment; and (4) did not screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. The finding was determined to have a crosscutting aspect in the area of human performance, associated with work practices component, in that the licensee failed to define and effectively communicate expectations regarding procedural compliance, and that personnel follow procedures H.4(b) (Section 1R13). |
| Site: | San Onofre  |
|---|---|
| Report | IR 05000361/2010004 Section 1R13 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | G Guerra R Lantz P Elkmann D Stearns J Reynoso J Josey G Warnick C Osterholtz E Ruesch G Tutak C Alldredge R Pelton |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - San Onofre - IR 05000361/2010004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (San Onofre) @ 2010Q3
Self-Identified List (San Onofre)
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