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On 7/4/17 at 0232 CDT, the University of M … On 7/4/17 at 0232 CDT, the University of Missouri-Columbia Research Reactor (MURR) was shut down due to the suspected inoperability of the Source Range Nuclear Instrument Channel during reactor startup. This is a required notification per MURR Technical Specification (TS) 6.6.c.(1) to report to the NRC Operations Center that an Abnormal Occurrence, as defined by MURR TS 1.1, had occurred. Specifically, MURR was not in compliance with all Limiting Conditions for Operations (LCOs). MURR was not in compliance with TS 3.5.a.3. and its associated note (1). TS 3.5.a.3 states, 'The reactor shall not be operated unless the following instrument channels are operable: ...3. Source Range Nuclear Instrument Channel...'. Note (1) clarifies that the Source Range Nuclear Instrument Channel is 'required for reactor startup only.' During the first rod withdrawal of the reactor startup, the Source Range Nuclear Instrument Channel indication was erratic. Therefore, it was decided to shut down the reactor. </br>The Source Range Nuclear Instrument Channel was repaired by replacing two power supplies in its instrument drawer, the required compliance procedures were conducted on the nuclear instrument, and permission from the Facility Director was obtained prior to the reactor returning to operation later on 7/4/17. Currently, MURR is at 10 MW. A detailed event report will follow within 14 days as required by MURR TS 6.6.c.(3). 14 days as required by MURR TS 6.6.c.(3). +
05:00:00, 5 July 2017 +
52,841 +
16:19:00, 5 July 2017 +
05:00:00, 5 July 2017 +
On 7/4/17 at 0232 CDT, the University of M … On 7/4/17 at 0232 CDT, the University of Missouri-Columbia Research Reactor (MURR) was shut down due to the suspected inoperability of the Source Range Nuclear Instrument Channel during reactor startup. This is a required notification per MURR Technical Specification (TS) 6.6.c.(1) to report to the NRC Operations Center that an Abnormal Occurrence, as defined by MURR TS 1.1, had occurred. Specifically, MURR was not in compliance with all Limiting Conditions for Operations (LCOs). MURR was not in compliance with TS 3.5.a.3. and its associated note (1). TS 3.5.a.3 states, 'The reactor shall not be operated unless the following instrument channels are operable: ...3. Source Range Nuclear Instrument Channel...'. Note (1) clarifies that the Source Range Nuclear Instrument Channel is 'required for reactor startup only.' During the first rod withdrawal of the reactor startup, the Source Range Nuclear Instrument Channel indication was erratic. Therefore, it was decided to shut down the reactor. </br>The Source Range Nuclear Instrument Channel was repaired by replacing two power supplies in its instrument drawer, the required compliance procedures were conducted on the nuclear instrument, and permission from the Facility Director was obtained prior to the reactor returning to operation later on 7/4/17. Currently, MURR is at 10 MW. A detailed event report will follow within 14 days as required by MURR TS 6.6.c.(3). 14 days as required by MURR TS 6.6.c.(3). +
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00:00:00, 5 July 2017 +
R-103 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
01:42:21, 2 March 2018 +
16:19:00, 5 July 2017 +
0.472 d (11.32 hours, 0.0674 weeks, 0.0155 months) +
05:00:00, 5 July 2017 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.