ENS 53570

v t e ENS Event
04:00 Jun 25, 2018
Title	Part 21 Notification - Selector Switch Shorted Due to Incorrect Hardware
Event Description	The following information is summarized and was obtained from Curtiss-Wright via fax: Curtiss-Wright was notified by Exelon Calvert Cliffs Plant that a Senasys selector switch P/N 910CMC-5240X (previously provided by Curtiss-Wright under Exelon purchase order 00630804), had failed a post-installation test. Calvert Cliffs sent the suspect switch to Exelon Powerlabs where the failure was found to have been caused by an assembly screw that was 1/8 inch too long, allowing it to cut into the coil of the switch, causing an electrical short. Correspondence between Exelon and the manufacturer determined that an inventory error had occurred. According to [Curtiss-Wright] records, only one customer and one plant received these defective switches. Exelon Generation's Calvert Cliffs received 5 switches on Exelon PO number 00630804 Rev. 2. Exelon Calvert Cliffs has been notified of this issue. Curtiss Wright's dedication plan will be revised to include a note to ensure no selector switches, for this part number, are manufactured with the November and December 2017 date codes. If you have any questions pertaining to this information, please contact Timothy Franchuk, Director of Quality Assurance, at 513-201-2176

ENS 53570 +/-
Where
Senasys Cincinnati, Ohio (NRC Region 3)
Organization:	Curtiss Wright Nuclear Division
Reporting

10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
Time - Person (Reporting Time:+1545.68 h64.403 days <br />9.2 weeks <br />2.117 months <br />)
Opened:	Tim Franchuk 13:41 Aug 28, 2018
NRC Officer:	Howie Crouch
Last Updated:	Aug 28, 2018
53570 - NRC Website
v • d • e

v t e Emergency Notification System
Senasys with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2018-06-25T04:00:00 [Table view]
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