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Nuclear Event – Manual Reactor SCRAM/Hot Shutdown: LaSalle County Nuclear Generating Station, Unit 2, Illinois

2017/01/24

Nuclear Event in USA on Monday, 23 January, 2017 at 08:06 [CST].

North America – USA | State of Illinois – LaSalle County Station, Unit 2
Location: 41°14’44.0″N 88°40’09.0″W
Present Operational Age: ~32 years
Event: RPS ACTUATION – CRITICAL – MANUAL REACTOR SCRAM

MANUAL REACTOR SCRAM DUE TO STATOR WATER COOLING RUNBACK SIGNAL AND TURBINE BYPASS VALVE OPENING

“This notification is being provided pursuant with 10 CFR 50.72 (b)(2)(iv)(B).

“[On January 23, 2017] at 0806 [CST], Unit 2 Manual Scram was inserted due to a Stator Water Cooling runback signal and a Turbine Bypass Valve opening. The Plant is stable, reactor pressure is being maintained with Bypass valves. Reactor water level is being controlled with feedwater. Investigation into the cause of the event is in progress.”

All control rods fully inserted.

The licensee has notified the NRC Resident Inspector.

Source: NRC Event Number: 52505

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