ENS Event | |
|---|---|
04:00 Sep 9, 2010 | |
| Title | Part 21 Report on Solid State Relays |
| Event Description | ABB, Inc. notified the NRC of solid state relays that failed to comply with ABB manufacturing specifications. Subject relays are 27H catalog numbers 411R0175-DP-1E and 411R0175-1E. The failure to comply is in regard to improper installation of a jumper on the main printed circuit board (PCB) of the relay. Manufacturing specifications require the jumper leads to extend far enough beyond the surface plane of the PCB to ensure proper connection. The jumper enables the relay to provide high-speed, instantaneous trip capability. If the jumper were not installed properly, the trip function may be erratic. The subject relays were manufactured between October 1, 2009 and September 9, 2010.
Two safety-related versions of this relay have been purchased by South Texas Project. ABB, Inc. is investigating whether any nuclear plants have purchased the affected relays for use in non safety-related applications. ABB will be notifying South Texas Project of this defect. |
| Where | |
|---|---|
| Abb, Inc. Coral Springs, Florida (NRC Region 1) | |
| Organization: | Abb, Inc. |
| Reporting | |
| 10 CFR 21.21 | |
| Time - Person (Reporting Time:+517.58 h21.566 days <br />3.081 weeks <br />0.709 months <br />) | |
| Opened: | Chad Buckwalter 17:35 Sep 30, 2010 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Sep 30, 2010 |
| 46296 - NRC Website | |
Abb, Inc. with 10 CFR 21.21 | |
WEEKMONTHYEARENS 467592011-04-15T04:00:00015 April 2011 04:00:00
[Table view]10 CFR 21.21 Potential Deviation in Seismic Ratings of Abb, Inc. Kf Relay Family ENS 462962010-09-09T04:00:0009 September 2010 04:00:00 10 CFR 21.21 Part 21 Report on Solid State Relays 2011-04-15T04:00:00 | |