ENS 54436

v t e ENS Event
06:12 Dec 10, 2019
Title	Technical Specification Violation Requiring Shutdown
Event Description	The following information was received via phone and email. On December 10, 2019, at 0012 CST, the University of Missouri-Columbia Research Reactor (MURR) was shut down due to a failure of the regulating blade drive mechanism during reactor operation. MURR was not in compliance with all Limiting Conditions for Operations (LCOs), specifically S 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, repaired, 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 10." Notification to the NRC Operations Center is required per TS 6.6.c(1) to report that an Abnormal Occurrence, as defined by TS 1.1.b, occurred. MURR was not in compliance with all of the Limiting Conditions for Operations as established in TS Section 3.0. A detailed event report will follow within 14 days as required by TS 6.6.c(3).

ENS 54436 +/-
Where
Univ Of Missouri-Columbia Columbia, Missouri (NRC Region 0)
License number:	R-103
Reporting

Non
Time - Person (Reporting Time:+26.97 h1.124 days <br />0.161 weeks <br />0.0369 months <br />)
Opened:	Jeremy Custer 09:10 Dec 11, 2019
NRC Officer:	Karl Diederich Property "NRC officer" (as page type) with input value "Karl Diederich " contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Last Updated:	Dec 11, 2019
54436 - NRC Website
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