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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 52354 | 2 November 2016 05:00:00 | Other Unspec Reqmnt | Switchgear Cabinet Design Modification Required | In accordance with 10CFR52.99(c)(2), V.C. Summer Units 2 and 3 Construction is making this notification to NRC for determining that Inspection, Test, Analysis, and Acceptance Criteria (ITAAC) 2.6.01.02.ii (Seismic Qualification of Reactor Coolant Pump Switchgear) for both units requires additional actions to restore its completed status. The Closure Notification for this ITAAC (NRC Index No. 580) was originally submitted on February 29, 2016 (reference ML16060A344 and ML16060A345). On November 2, 2016, it was determined that modifications to the RCP switchgear cabinet design were required to ensure compliance with the applicable portions of IEEE 384, Standard Criteria for Independence of Class 1E Equipment and Circuits. The modification involved an engineering change which adds different equipment to the RCP Switchgear cabinet which function to trip the RCP. The new components were not previously seismically qualified for use in the RCP switchgear cabinet assembly. The additional components have now undergone seismic qualification testing for use in the RCP switchgear. The Equipment Qualification Data Package and Equipment Qualification Summary Report for the RCP switchgear will be revised based on the results of the testing to confirm the switchgear withstands seismic design basis loads. The revised testing report has been completed on November 8 2016. The licensee notified the NRC Resident Inspector. | ||
| ENS 43005 | 21 November 2006 19:00:00 | Other Unspec Reqmnt | Outside of License Condition for Inspection of Service Water Intake Structure | At 1400 on 11/21/06, V.C. Summer Nuclear Station (VCSNS) determined there was a failure to perform required monitoring of the Service Water intake structure and embankments within the required 5 year frequency. This is not a requirement of Technical Specifications, but is required by the VCSNS Operating License NPF-12, Section 2.C(5). This license condition requires that the monitoring interval not exceed 5 years. Monitoring was last performed 12/04/00 with no adverse consequences noted in the evaluation. Efforts are underway to schedule the required monitoring as soon as practicable. An extent-of-condition review will be performed to ensure compliance with all aspects of license condition 2.C(5). The licensee will notify the NRC Resident Inspector. State and local agencies will also be notified. | Service water |