ENS 57079: Difference between revisions
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| NRC officer = Bill Gott | | NRC officer = Bill Gott | ||
| event date = 02/15/2024 00:00 CDT | | event date = 02/15/2024 00:00 CDT | ||
| last update date = | | last update date = 06/29/2024 | ||
| title = Initial Part 21 Report - Potential Defect with Circuit Breaker | | title = Initial Part 21 Report - Potential Defect with Circuit Breaker | ||
| event text = The following information was provided by the licensee via email: | | event text = The following information was provided by the licensee via email: | ||
Pursuant to 10CFR 21.21 (a)(2), Paragon Energy Solutions, LLC is providing this interim notification of ongoing analysis for Part 21 reportability of a potential defect with a Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000. | Pursuant to 10CFR 21.21 (a)(2), Paragon Energy Solutions, LLC is providing this interim notification of ongoing analysis for Part 21 reportability of a potential defect with a Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000. | ||
On February 15, 2024, Paragon completed initial documentation of a potential defect with the subject circuit breaker in which Duke-Oconee had identified failure to close on demand or delayed operation to close with extended application of the remote closing signal. Since the primary safety function of the circuit breaker is to close and maintain continuity of power to downstream loads, failure to close could potentially contribute to a substantial safety hazard. | On February 15, 2024, Paragon completed initial documentation of a potential defect with the subject circuit breaker in which Duke-Oconee had identified failure to close on demand or delayed operation to close with extended application of the remote closing signal. Since the primary safety function of the circuit breaker is to close and maintain continuity of power to downstream loads, failure to close could potentially contribute to a substantial safety hazard. | ||
This is the first reported instance of this failure mode, and Paragon suspects the issue to be related to aging of the circuit breaker | This is the first reported instance of this failure mode, and Paragon suspects the issue to be related to aging of the circuit breaker's lubrication. Paragon requires more time to complete testing and analysis to confirm the failure mode and determine reportability. | ||
Date when evaluation is expected to be complete: 5/03/2024. | Date when evaluation is expected to be complete: 5/03/2024. | ||
Affected licensee: Oconee. Paragon is currently evaluating the extent of condition as it pertains to other plants and equipment that may utilize the same or similar circuit breakers. | Affected licensee: Oconee. Paragon is currently evaluating the extent of condition as it pertains to other plants and equipment that may utilize the same or similar circuit breakers. | ||
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rknott@paragones.com | rknott@paragones.com | ||
Notified R2DO (Franke) and Part 21/50.55 Reactors (email). | Notified R2DO (Franke) and Part 21/50.55 Reactors (email). | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2024/ | * * * UPDATE ON 6/29/2024 AT 1137 EDT FROM RICHARD KNOTT TO ERNEST WEST * * * | ||
The following is a synopsis of the updated information received: | |||
Paragon Energy Solutions has provided a new expected date for completion of their evaluation: 7/28/2024. | |||
The only known affected licensee remains Oconee. | |||
Notified R2DO (Suggs) and Part 21/50.55 Reactors (email). | |||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2024/20240701en.html#en57079 | |||
}} | }} | ||
{{ENS-Nav}} | {{ENS-Nav}} | ||
Latest revision as of 07:20, 1 July 2024
| Where | |
|---|---|
| Paragon Energy Solutions Fort Worth, Texas (NRC Region 2) | |
| Organization: | Paragon Energy Solutions |
| Reporting | |
| 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
| Time - Person (Reporting Time:+1483.48 h61.812 days <br />8.83 weeks <br />2.032 months <br />) | |
| Opened: | Richard Knott 23:29 Apr 16, 2024 |
| NRC Officer: | Bill Gott |
| Last Updated: | Jun 29, 2024 |
| 57079 - NRC Website | |