Reactor 2 at the South Texas Nuclear Project shut down early yesterday morning due to a turbine trip and generator lockout. The unit’s Auxiliary Feedwater system activated following the turbine trip. A steam dump valve failed in the open position during the incident.
Unit 2 had just returned to full power following a refueling outage. The reactor is in Hot Standby mode.
South Texas Project Nuclear Operating Company (STPNOC) has promised a press release on the matter, but as of this hour, the statement has not been posted to the STPNOC website.
More information when it becomes available….