ENS 57424

v t e ENS Event
12:38 Oct 1, 2024
Title	Part 21 - Control Relay Defect
Event Description	The following information was provided by the licensee via phone and email: NextEra Energy Seabrook LLC. makes the following notification under 10 CFR 21.21(d)(3)(i) of a defect found in a GE - Hitachi Relay, CR120B (Model #DD945E118P0060) during pre-installation bench testing. During bench testing, the relay failed to energize and transfer all associated contacts. The relay was purchased from GE - Hitachi (GEH) as safety-related, GE CR-120B relays. All GE CR-120B relays that were purchased in the same batch as the failed relay were located and quarantined in order to be returned to GEH for forensic testing. NextEra Energy Seabrook, LLC has concluded that this defect constitutes a substantial safety hazard (SSH). A SSH exists because the nature of the defect was such that, if installed in certain safety-related applications and failed, it would have prevented the fulfillment of a safety function. On November 12, 2024, the Seabrook site Vice President was notified of the requirement to report this event under 10 CFR 21.21. This is a non-emergency notification required by 10 CFR 21.21(d)(3)(i). A written notification will be provided in accordance with 10 CFR 21.21(d)(3)(ii). Because the defect was discovered prior to installation, there was no impact to safety-related equipment. The NRC Senior Resident Inspector has been informed.

ENS 57424 +/-
Where
Seabrook New Hampshire (NRC Region 1)
Reporting

10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
Time - Person (Reporting Time:+1053.33 h43.889 days <br />6.27 weeks <br />1.443 months <br />)
Opened:	Shaun Matthews 10:58 Nov 14, 2024
NRC Officer:	Bill Nytko
Last Updated:	Nov 15, 2024
57424 - NRC Website Loading map...
v • d • e

v t e Emergency Notification System
Seabrook with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2024-10-01T12:38:00 [Table view]
[ENS list for Seabrook]

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