On February 23, 2021, it was discovered that two licensed operators had manipulated the plant between April 30, 2020 and July 20, 2020, without being fully qualified; having exceeded the due date for their annual operating test. This constitutes a deviation from the facility's
Technical Specification 6.1.3.1 - 'Minimum staffing'. During that period the reactor was operated normally, there were no unusual occurrences and at no time did the loss of qualifications cause the existence or development of an unsafe condition with regard to reactor operations. Both operators performed and passed their operating test on July 20, 2020.
The cause of this event is under investigation.
The licensee has notified their NRC Project Manager.