ENS 56177

v t e ENS Event
12:57 Oct 24, 2022
Title	Manual Reactor Trip and Auxiliary Feedwater System Actuation
Event Description	The following information was provided by the licensee via email: On 10/24/2022 at 0857 EDT, with Unit 2 in Mode 1 at 7 percent power, the reactor was manually tripped due to a 2B train main feedwater pump trip. The trip was not complex, with all systems responding normally post-trip. The auxiliary feedwater (AFW) system started automatically as expected. Operations responded and stabilized the plant. Decay heat is being removed by the steam generators and discharging to the condenser. Unit 1 is not affected. 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). The automatic start of the auxiliary feedwater system is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(iv)(A). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified.

ENS 56177 +/-
Where
Catawba South Carolina (NRC Region 2)
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:+-1.28 h-0.0533 days <br />-0.00762 weeks <br />-0.00175 months <br />)
Opened:	Mike James 11:40 Oct 24, 2022
NRC Officer:	Ian Howard
Last Updated:	Oct 24, 2022
56177 - NRC Website
v • d • e

v t e Emergency Notification System
Catawba with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation
WEEKMONTHYEAR2024-03-13T01:11:00 [Table view]
[ENS list for Catawba]

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