ENS 57363

v t e ENS Event
04:00 Aug 9, 2024
Title	Part 21 - Non Compliant Contactors
Event Description	The following is a synopsis of information provided by MPR Associates, Inc. (MPR) via fax: On August 9, 2024, MPR received information that electrical contactors (Models AF80 and AF116) provided by Asea Brown Boveri Ltd. (ABB) contain a microcontroller. The fact that these contactors contain a microcontroller was not included in MPR's analysis during their commercial grade dedication process. Two contactors were supplied to Beaver Valley Power Station (ABB AF116-30-11-13) where one was installed in the excitation system for one emergency diesel generator. Five contactors were supplied to Davis-Besse Nuclear Power Station (ABB AF116-30-11-13), but none were installed. MPR is currently working to provide information to support continued use of the installed contactors. MPR is also working to identify a replacement contactor that is suitable for the application. Responsible MPR officer: Robert Coward, Principal Officer MPR Associates, Inc. 320 King Street Alexandria, VA 22314 703-519-0200

ENS 57363 +/-
Where
Mpr Associates, Inc. Engineers Alexandria, Virginia (NRC Region 2)
Organization:	Mpr Associates, Inc. Engineers
Reporting

10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
Time - Person (Reporting Time:+1351.63 h56.318 days <br />8.045 weeks <br />1.851 months <br />)
Opened:	Robert Coward 11:38 Oct 4, 2024
NRC Officer:	Sam Colvard
Last Updated:	Oct 4, 2024
57363 - NRC Website
v • d • e

v t e Emergency Notification System
Mpr Associates, Inc. Engineers with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2024-08-09T04:00:00 [Table view]
[ENS list for Mpr Associates, Inc. Engineers]

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