05000528/FIN-2013003-03
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Finding | |
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| Title | Failure to Implement Corrective Action for Embedded Operator Work Around |
| Description | Title 10 CFR 50.59(c)(1) requires, in part, that a licensee may make changes in the facility as described in the final safety analysis report without obtaining a license amendment pursuant to Section 50.90 only if a change to the technical specifications incorporated in the license is not required. Contrary to the above, between 2003 and March 8, 2013, the licensee made changes to the reactivity of fuel discharged to the spent fuel pool without obtaining a license amendment. Specifically, the licensee received license amendments for power uprates in 2003 and 2005, but did not recognize the impact of the power uprates relative to spent fuel pool criticality. Consequently, the licensee did not update the spent fuel pool criticality analysis of record and did not request a license amendment to revise the affected Technical Specifications 3.7.17 and 4.3.1.1. On March 8, 2013, the licensees engineering staff discovered that the spent fuel pool analysis of record had not been updated to account for the replacement steam generator power uprate. The power uprate required higher moderator and fuel temperatures within the core, thereby increasing plutonium production, which in turn increases the reactivity of the spent fuel. This condition resulted in Technical Specifications 3.7.17 and 4.3.1.1 being non-conservative. The licensee initiated PVAR 4363316 to document the condition and issued an Event Notification to the NRC to report an unanalyzed condition. The licensee also performed a prompt operability determination to show that despite the non-conservative technical specifications, the fuel in the spent fuel pool remains in a safe configuration. The licensee planned corrective actions to revise the spent fuel pool analysis of record using updated methodology and input parameters. Traditional enforcement applied to this finding because it involved a violation that impacted the regulatory process. Assessing the violation in accordance with Enforcement Policy, the team determined it to be of Severity Level IV because it resulted in a condition evaluated by the SDP as having very low safety significance. |
| Site: | Palo Verde  |
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| Report | IR 05000528/2013003 Section 4OA2 |
| Date counted | Jun 30, 2013 (2013Q2) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | M Brown B Tharakan S Graves D Allen M Baquera D Reinert P Jayroe |
| INPO aspect | |
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Finding - Palo Verde - IR 05000528/2013003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palo Verde) @ 2013Q2
Self-Identified List (Palo Verde)
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