On 1/17/17 at 2130
CST, the
MURR [University of
Missouri Research Reactor] was shut down due to the failure of the regulating blade to move. This email is a required notification per
MURR TS 6.6.c.(1) to report to the NRC Operations Center that an Abnormal Occurrence as defined by
MURR TS 1.1 happened. Specifically,
MURR was not in compliance with all Limiting Conditions for Operations (LCOs).
MURR was not in compliance with the LCO
TS 3.2.a. which states, 'All control blades, including the regulating blade, shall be
operable during reactor operation.' The regulating blade was repaired, and the required compliance procedure was conducted on the regulating blade prior to the reactor being started up on 1/18/17. Currently,
MURR is again at 10
MW. A detailed event report will follow within 14 days as required by
MURR TS 6.6.c.(3).
The reactor was at 10 MW power when this event occurred. The cause of this event is under investigation.
The licensee notified the NRC RTR Project Manager.