ENS 45776

v t e ENS Event
04:00 Mar 18, 2010
Title	Defect Concerning Failure of Relay to Release When De-Energized
Event Description	The following was received via facsimile: The defect prevents the relay contacts from changing state when required during postulated events. This failure could preclude components from going to their desired accident state upon receipt of an engineered safety features actuation signal. There have been no reports to date of relay contacts failing to properly change state when the relay goes from a deenergized to an energized state. Westinghouse shipped Palo Verde a total of 120 Cutler Hammer Type ARD 660UR DC Relays. Westinghouse Repair, Replacement and Automation Services (RRAS) has been working with Palo Verde and Eaton-Cutler Hammer to identify and correct the cause of these relay failures. POC: J. A. Gresham, Secretary Safety Review Committee Westinghouse Electric Company LLC Nuclear Services P.O. Box 355 Pittsburgh, Pennsylvania 15230-0355 (412) 374-4643

ENS 45776 +/-
Where
Westinghouse Electric Company Pittsburg, Pennsylvania (NRC Region 1)
Organization:	Westinghouse Electric Company
Reporting

10 CFR 21.21
Time - Person (Reporting Time:+28.62 h1.193 days <br />0.17 weeks <br />0.0392 months <br />)
Opened:	James A. Gresham 08:37 Mar 19, 2010
NRC Officer:	Dong Park
Last Updated:	Mar 19, 2010
45776 - NRC Website
v • d • e

v t e Emergency Notification System
Westinghouse Electric Company with 10 CFR 21.21
WEEKMONTHYEAR2010-03-18T04:00:00 [Table view]
[ENS list for Westinghouse Electric Company]

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