ENS 54187
ENS Event | |
|---|---|
00:03 Jul 30, 2019 | |
| Title | Technical Specification Deviation |
| Event Description | The following information was received via email:
On July 29, 2019, at 1903 CDT, the University of Missouri-Columbia Research Reactor (MURR) was shut down due to a failure of the regulating blade drive mechanism during reactor operation. This email 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 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, 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 July 29. Currently, MURR is at 10 MW. A detailed event report will follow within 14 days as required by TS 6.6.c(3). The licensee has notified the NRC Research and Test Reactor Project Manager. |
| Where | |
|---|---|
| Univ Of Missouri-Columbia Columbia, Missouri (NRC Region 0) | |
| License number: | R-103 |
| Reporting | |
| Non | |
| Time - Person (Reporting Time:+13.73 h0.572 days <br />0.0817 weeks <br />0.0188 months <br />) | |
| Opened: | Bruce Meffert 13:47 Jul 30, 2019 |
| NRC Officer: | Andrew Waugh |
| Last Updated: | Jul 30, 2019 |
| 54187 - NRC Website | |
Univ Of Missouri-Columbia with Non | |
WEEKMONTHYEARENS 553802021-07-26T22:31:00026 July 2021 22:31:00
[Table view]Non Reactor Shutdown Due to Control Rod Drive Failure ENS 546602020-04-09T19:32:0009 April 2020 19:32:00 Non Abnormal Occurrence ENS 546532020-04-08T06:00:0008 April 2020 06:00:00 Non Research and Test Reactor Forced Shutdown Due to Failure of Regulating Blade Drive Mechanism ENS 544532019-12-20T03:21:00020 December 2019 03:21:00 Non Technical Specification Deviation ENS 544362019-12-10T06:12:00010 December 2019 06:12:00 Non Technical Specification Violation Requiring Shutdown ENS 541872019-07-30T00:03:00030 July 2019 00:03:00 Non Technical Specification Deviation ENS 540342019-04-28T11:33:00028 April 2019 11:33:00 Non Control Blade Inoperable ENS 538492019-01-28T01:13:00028 January 2019 01:13:00 Non Control Blade Inoperable ENS 538412019-01-21T18:35:00021 January 2019 18:35:00 Non Deviation of Ts 3.3.A(1) for Anti-Siphon Device Found Inoperable ENS 534332018-05-30T12:10:00030 May 2018 12:10:00 Non Technical Specification Deviation ENS 532442018-03-04T09:08:0004 March 2018 09:08:00 Non Technical Specification Deviation ENS 531422017-12-30T13:17:00030 December 2017 13:17:00 Non Technical Specification Required Report for an Abnormal Occurrence ENS 528412017-07-05T05:00:0005 July 2017 05:00:00 Non Abnormal Occurrence Due to Source Range Inoperability During Reactor Start-Up ENS 527022017-04-20T19:49:00020 April 2017 19:49:00 Non Technical Specification Required Report for an Abnormal Occurrence 2021-07-26T22:31:00 | |