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Nuclear Event – Automatic Reactor SCRAM: Salem Nuclear Power Plant, Unit 2, New Jersey

2016/09/01

Nuclear Event – Reactor Trip

North America – USA | State of New Jersey,  Lower Alloways Creek Township, Salem Nuclear Power Plant, Unit 2
Location: 39°27’46.0″N 75°32’08.0″W
Present Operational Age: ~31 years
Event: RPS ACTUATION – CRITICAL/VALID SPECIF SYS ACTUATION

Nuclear Event in USA on Wednesday, 31 August, 2016 at 15:11 [EDT].

AUTOMATIC REACTOR TRIP ON LOW REACTOR COOLANT FLOW

“This 4-hour and 8-hour notification is being made to report that Salem Unit 2 had an unplanned automatic reactor trip and automatic actuation of the auxiliary feedwater system. The trip occurred due to the loss of the 21 reactor coolant pump [RCP] resulting in a reactor trip on low reactor coolant flow. The 21 RCP remains unavailable. The cause of the loss of the 21 reactor coolant pump is unknown at this time.

“All control rods inserted on the reactor trip. All emergency core cooling systems and engineered safety feature systems functioned as expected. The auxiliary feed pumps started as expected.

“Salem Unit 2 is currently in Mode 3. Reactor coolant system pressure is at 2235 psig and temperature is 547 degrees Fahrenheit with decay heat removal via the main steam dumps and auxiliary feedwater systems. Unit 2 has no active technical specification action statements in effect requiring a lower mode of operation due to the transient.

“The 21 and 22 containment fan coil units (CFCU) were out of service for surveillance testing prior to the event. There was no major secondary equipment tagged for maintenance prior to the event. There were no personnel injuries as a result of this event.

“Normal offsite power is available to the site. There is no effect on Unit 1.”

The licensee notified the NRC Resident Inspector.

Source: NRC Event Number: 52213
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Previous Events

Nuclear Event in USA on Tuesday, 28 June, 2016 at 04:23 [EDT]. AUTOMATIC REACTOR TRIP DUE TO MAIN TURBINE TRIP

Nuclear Event in USA on Thursday, 04 February, 2016 at 11:21 [EST]. AUTOMATIC REACTOR TRIP DUE TO MAIN TURBINE TRIP – UNIT 2

Nuclear Event in USA on Monday, 23 November, 2015 at 21:48 [EST]. UNUSUAL EVENT DECLARED DUE TO REACTOR COOLANT SYSTEM LEAKAGE  – UNIT 2

Nuclear Event in USA on Wednesday, 05 August, 2015 at 15:38 [EDT].  AUTOMATIC REACTOR TRIP ON LOW REACTOR COOLANT FLOW – UNIT 2

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