The South Texas Project (STP) started a scheduled refueling and maintenance outage of Unit 1, the South Texas Project Nuclear Operating Co. said on Oct. 22. Unit 1 recorded the best performance in plant history beginning with its last refueling outage in spring 2011 to the current scheduled refueling and maintenance outage. The 1,250 MW unit operated for a plant-record 530 consecutive days.
The previous STP record for consecutive days online – held by Unit 2 – was 525 days, completed in 2008. The previous Unit 1 record was set from 2006 to 2008 with 511 consecutive days online.
During the Unit 1 outage, about one-third of the reactor’s fuel assemblies will be replaced with new ones. In addition, thousands of maintenance activities are scheduled to enhance equipment reliability. Numerous plant systems and components will be tested and inspected. In all, more than 11,000 activities are scheduled. STP’s two units are on an 18-month refueling cycle.
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