ENS 57221: Difference between revisions
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| NRC officer = Eric Simpson | | NRC officer = Eric Simpson | ||
| event date = 07/10/2024 07:28 EDT | | event date = 07/10/2024 07:28 EDT | ||
| last update date = 07/ | | last update date = 07/11/2024 | ||
| title = Automatic Reactor Scram Due to Manual Turbine Trip | | title = Automatic Reactor Scram Due to Manual Turbine Trip | ||
| 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: | ||
At 0728 | At 0728 EDT on July 10, 2024, with Unit 2 in Mode 1 at 24 percent power, the reactor automatically scrammed due to a manual turbine trip. The [reactor] scram was not complex with all systems responding normally. Reactor vessel level reached the low-level set-point following the scram, resulting in valid Group 2 and Group 3 containment isolation signals. Due to the reactor protection system actuation while critical, this event is being reported as a four hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B) and an eight hour, non-emergency notification per 10 CFR 50.72(b)(3)(iv)(A) for the Group 2 and Group 3 isolations. | ||
Operations responded using emergency operating procedures and stabilized the plant in Mode 3. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. Unit 3 was not affected. | Operations responded using emergency operating procedures and stabilized the plant in Mode 3. Decay heat is being removed by discharging steam to the main condenser using the turbine bypass valves. Unit 3 was not affected. | ||
There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. | There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2024/ | | URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2024/20240712en.html#en57221 | ||
}}{{unit info | }}{{unit info | ||
| Unit = 2 | | Unit = 2 | ||
Latest revision as of 06:20, 12 July 2024
| Where | |
|---|---|
Peach Bottom  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| LER: | 05000277/LER-2024-003 (Pbaps) Unit 2 Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum |
| Time - Person (Reporting Time:+-0.22 h-0.00917 days <br />-0.00131 weeks <br />-3.01356e-4 months <br />) | |
| Opened: | Gino Lombardo 11:15 Jul 10, 2024 |
| NRC Officer: | Eric Simpson |
| Last Updated: | Jul 11, 2024 |
| 57221 - NRC Website
| |
Peach Bottom with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |