ENS 55252
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ENS Event | |
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16:25 May 12, 2021 | |
Title | Automatic Reactor Trip, Main Feed Isolation, and Auxilliary Feedwater System Actuation |
Event Description | With Reactor power at approximately 8 percent following a refueling outage, Steam Generator levels began to oscillate while in automatic control. Manual control of Main Feedwater Regulating Valves was unable to stabilize steam generator levels prior to reaching the "C" Steam Generator Low Level Reactor Trip setpoint. Reactor Trip, Main Feedwater Isolation and Auxiliary Feedwater Actuation automatically actuated.
The plant is stable in Mode 3 at Hot Standby. All equipment has responded as expected. The Resident has been contacted. |
Where | |
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Wolf Creek ![]() Kansas (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
Time - Person (Reporting Time:+-0.73 h-0.0304 days <br />-0.00435 weeks <br />-9.99954e-4 months <br />) | |
Opened: | Tyler Greenfield 15:41 May 12, 2021 |
NRC Officer: | Jeffrey Whited |
Last Updated: | May 12, 2021 |
55252 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | A/R |
Before | Power Operation (8 %) |
After | Hot Standby (0 %) |
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