WASHINGTON, March 14 -- The Nuclear Regulatory Commission issued the following event notification (No. 56403) involving Waterford Nuclear Plant, Louisiana:
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Unit:   
RX Type:  CE
NRC Notified By: Kevin Hale
HQ OPS Officer: Ernest West
Notification Date: 03/10/2023
Notification Time: 07:25 [ET]
Event Date: 03/10/2023
Event Time: 02:37 [CST]
Last Update Date: 03/10/2023
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(i) - Plant S/D Reqd By Ts
Person (Organization): Gepford, Heather (R4DO)
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[Link to table at bottom of document.]
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SHUTDOWN REQUIRED BY TECHNICAL SPECIFICATIONS
The following information was provided by the licensee via email:
"On 03/09/2023 at 2200 CST, Waterford [Unit] 3 entered OP-901-111, Reactor Coolant System Leakage, and OP-901-403, High Activity In Containment, due to elevated reactor coolant system (RCS) leakage in containment. On 03/10/2023, at 0030 Operations entered Technical Specification 22.214.171.124 action (c) due to unidentified leakage exceeding 1 gallon per minute (gpm). Technical Specification 126.96.36.199 action (c) requires reducing the leakage rate to within limits within 4 hours or be in at least hot standby within the next 6 hours and in cold shutdown within the following 30 hours.
"On 03/10/2023 at 0237 the plant discovered an unisolable RCS leak in the reactor coolant pump 1B cubicle and initiated action to complete a plant shutdown required by Technical Specifications. This event is being reported as a 4-hour report in accordance with 10 CFR 50.72(b)(2)(i) as the initiation of plant shutdown required by technical specifications. Reactor was tripped at 0521 CST on 3/10/2023."
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Original text here: https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2023/2...