|TECHNICAL SPECIFICATION DEVIATION
"On December 19, 2019, at 2121 CST, the University of Missouri-Columbia Research Reactor (MURR) was shut down due to a seized servomotor on the regulating blade drive mechanism during reactor operation. This notification is required per MURR Technical Specification (TS) 6.6.c(1) to report to the NRC Operations Center that an Abnormal Occurrence, as defined by TS 1.1, had occurred. MURR was not in compliance with all Limiting Conditions for Operations (LCOs), specifically TS 3.2.a, which states, 'All control blades, including the regulating blade, shall be operable during reactor operation.' The regulating blade drive mechanism was removed, a new motor installed, and then the regulating blade drive mechanism was reinstalled and all its functions were tested satisfactorily. Permission from the Reactor Facility Director was obtained per TS 6.6.c(4) prior to starting up the reactor later on December 20.
"A detailed event report will follow within 14 days as required by TS 6.6.c(3)."