ENS 52354
ENS Event | |
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05:00 Nov 2, 2016 | |
Title | Switchgear Cabinet Design Modification Required |
Event Description | 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. |
Where | |
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Summer South Carolina (NRC Region 2) | |
Reporting | |
Other Unspec Reqmnt | |
Time - Person (Reporting Time:+149.73 h6.239 days <br />0.891 weeks <br />0.205 months <br />) | |
Opened: | Bryan Barwick 11:44 Nov 8, 2016 |
NRC Officer: | Vince Klco |
Last Updated: | Nov 8, 2016 |
52354 - NRC Website
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Unit 2 | |
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Reactor critical | Not Critical |
Scram | No |
Before | Under Construction (0 %) |
After | Under Construction (0 %) |
Unit 3 | |
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Reactor critical | Not Critical |
Scram | No |
Before | Under Construction (0 %) |
After | Under Construction (0 %) |
WEEKMONTHYEARENS 523542016-11-02T05:00:0002 November 2016 05:00:00
[Table view]Other Unspec Reqmnt Switchgear Cabinet Design Modification Required ENS 430052006-11-21T19:00:00021 November 2006 19:00:00 Other Unspec Reqmnt Outside of License Condition for Inspection of Service Water Intake Structure 2016-11-02T05:00:00 | |