ENS 49230
ENS Event | |
|---|---|
04:00 Jul 31, 2013 | |
| Title | Part 21 Report - Deviation of Hk Circuit Breaker Close Latch Spring |
| Event Description | ABB identified a deviation with close latch springs provided since 1/20/2010 used in medium voltage HK circuit breakers. These close latch springs are used on new legacy HK circuit breakers, replaced during HK circuit breaker refurbishment activities, and provided in HK refurbishment kits and as component items. The ABB part number for the close latch spring is: 162374A00. The nature of the deviation is a reduced spring force. There is a potential for an aged HK circuit breaker with hardening grease and this reduced spring force not to close.
The following is a list of affected customers: Detroit Edison Fermi 2 Dominion VA Duke Catawba Duke Energy - Seneca Duke Energy - Cataw Duke Huntersville Duke McGuire Duke Oconee Entergy River Bend Exelon Limerick Exelon Nuclear Exelon Peach Bottom Exelon Point Beach First Energy Beaver Valley Georgia Power Plant Vogtle Nextera Point Beach Nextera Seabrook Prairie Island Nuclear Progress Energy Brunswick Progress Energy Crystal River PSEG Alloway Creek Southern Cal Edison STP Nuclear TVA Sequoyah.
The following information is excerpted from a fax/email submitted by ABB, Inc.: This letter amends the previous 10CFR Part 21 Notification of 31 July 2013 to encompass a wider time period during which the close latch spring (P/N: 162374A00) was sold for use in medium voltage HK circuit breakers. The initial time period of concern reported was January 2010 to July 2013. Revision 7 to the print was issued in January 2010 and it was determined during the initial investigation that this was the start of the deviation because the free angle was incorrectly shown. Our [ABB, Inc.] corrective actions in 2013 corrected this mistake. In February 2015, a licensee notified us [ABB, Inc.] of springs from 2007 that have the same improper free angle. The order of springs received just prior to it had the proper free angle. We [ABB, Inc.] have narrowed the start time of this issue to the lone batch of springs purchased in 2007 as they were received shortly before the order identified by the licensee was released. Notified R1DO (Ferdas), R2DO (Heisserer), R3DO (Skokowski), R4DO (Azua) and NRR Part 21 via email. |
| Where | |
|---|---|
| Abb Inc. Florence, South Carolina (NRC Region 1) | |
| Organization: | Abb Inc. |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+13.75 h0.573 days <br />0.0818 weeks <br />0.0188 months <br />) | |
| Opened: | Jay Lavrinc 17:45 Jul 31, 2013 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Apr 8, 2015 |
| 49230 - NRC Website | |
Abb Inc. with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 520412016-04-26T04:00:00026 April 2016 04:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - Deviation for Class 1E Solid State Relays (47H and 60Q) ENS 492302013-07-31T04:00:00031 July 2013 04:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 Report - Deviation of Hk Circuit Breaker Close Latch Spring ENS 488722013-02-04T04:00:0004 February 2013 04:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Potential Issue Concerning the Zpa Rating for 3 Phase Relay Type Ssc-T 2016-04-26T04:00:00 | |