ENS 56389
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ENS Event | |
|---|---|
15:10 Mar 4, 2023 | |
| Title | Automatic Actuation of Reactor Protection System (RPS) |
| Event Description | The following information was provided by the licensee via email:
At 0910 [CST], with Unit 2 in Mode 4 at 0 percent power, an actuation of a reactor scram on low charging water header pressure occurred during restoration from hydrostatic test conditions. All control rods were already fully inserted prior to the receipt of the scram signal. This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the Unit 2 RPS system. There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Lasalle  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+1.53 h0.0638 days <br />0.00911 weeks <br />0.0021 months <br />) | |
| Opened: | Matt Tutich 16:42 Mar 4, 2023 |
| NRC Officer: | Karen Cotton-Gross |
| Last Updated: | Mar 4, 2023 |
| 56389 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Shutdown (0 %) |
| After | Hot Shutdown (0 %) |
WEEKMONTHYEARENS 570832024-04-20T12:04:00020 April 2024 12:04:00
[Table view]10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Actuation of Emergency Diesel Generators ENS 563892023-03-04T15:10:0004 March 2023 15:10:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Actuation of Reactor Protection System (RPS) ENS 539032019-03-01T04:17:0001 March 2019 04:17:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Specified System Actuation - Trip of Safety Related Bus ENS 503462014-08-05T22:34:0005 August 2014 22:34:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Scram ENS 489392013-04-17T20:11:00017 April 2013 20:11:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(iv)(A), System Actuation - ECCS Discharge Notification of Unusual Event Declared Due to Loss of Offsite Power from a Lightning Strike ENS 423482006-02-20T06:23:00020 February 2006 06:23:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Site Area Emergency - Reactor Scram ENS 417872005-06-22T04:40:00022 June 2005 04:40:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Multiple Specified Systems Actuations Due to Loss of Ac Safety Related Buses ENS 404952004-02-02T04:34:0002 February 2004 04:34:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation One Half Scram Signal Due to the Loss of the "B" Reactor Protection System Bus. 2024-04-20T12:04:00 | |
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