ENS 57718: Difference between revisions
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| NRC officer = Robert A. Thompson | | NRC officer = Robert A. Thompson | ||
| event date = 05/19/2025 10:45 CDT | | event date = 05/19/2025 10:45 CDT | ||
| last update date = 05/ | | last update date = 05/22/2025 | ||
| title = Manual Reactor Scram Due to Loss of Feedwater | | title = Manual Reactor Scram Due to Loss of Feedwater | ||
| event text = The following information was provided by the licensee via phone and email: | | event text = The following information was provided by the licensee via phone and email: | ||
| Line 25: | Line 25: | ||
On Unit 1, all control rods fully inserted on the scram and outboard main steam isolation valves closed on a loss of power. | On Unit 1, all control rods fully inserted on the scram and outboard main steam isolation valves closed on a loss of power. | ||
The initial bus trip was caused by control power perturbations due to a ground on the associated battery system. | The initial bus trip was caused by control power perturbations due to a ground on the associated battery system. | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2025/ | * * * UPDATE ON 5/20/2025 AT 1200 EDT FROM MATTHEW FRITCH TO SAMUEL COLVARD * * * | ||
Based on additional investigation, it has not been confirmed that the initial bus trip was caused by a ground on the associated battery system. The cause remains under investigation. | |||
Notified R3DO (Szwarc) | |||
* * * UPDATE ON 5/22/2025 AT 1532 EDT FROM CONNER BEALER TO TENISHA MEADOWS * * * | |||
The scram was initially reported as manual; however, further investigation determined that it was automatically initiated. | |||
Notified R3DO (Szwarc) | |||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2025/20250523en.html#en57718 | |||
}}{{unit info | }}{{unit info | ||
| Unit = 1 | | Unit = 1 | ||
| type = GE-3 | | type = GE-3 | ||
| Scram code = | | Scram code = M/R | ||
| Reactor critical = Y | | Reactor critical = Y | ||
| Initial power = 100 | | Initial power = 100 | ||
Latest revision as of 06:20, 23 May 2025
| Where | |
|---|---|
Quad Cities  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+-0.6 h-0.025 days <br />-0.00357 weeks <br />-8.2188e-4 months <br />) | |
| Opened: | Jason Cooper 15:09 May 19, 2025 |
| NRC Officer: | Robert A. Thompson |
| Last Updated: | May 22, 2025 |
| 57718 - NRC Website
| |
Quad Cities with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |