ENS Event | |
|---|---|
17:28 Jan 17, 2018 | |
| Title | Non-Power Reactor Manually Scrammed |
| Event Description | Technical Specification 3.2.3 item 1 requires that a minimum of two level channels be operable and set to scram the reactor at less than 7.4MW. A reactor startup was in progress to 1MW for training with one of three level channels out-of-commission. The reactor reached 1MW at 1219 EST on 1/17/18. The shift supervisor was completing the checklist that requires observing level channels to verify they are responding. The shift supervisor noticed that only one channel was responding and scrammed the reactor at 1228 EST. Preliminary investigation found a faulty connection point at the detector signal cable. Corrective actions and retesting is ongoing. |
| Where | |
|---|---|
| Massachusetts Institute Of Tech Cambridge, Massachusetts (NRC Region 0) | |
| License number: | R-37 |
| Reporting | |
| Non | |
| Time - Person (Reporting Time:+16.58 h0.691 days <br />0.0987 weeks <br />0.0227 months <br />) | |
| Opened: | John Foster 10:03 Jan 18, 2018 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Jan 18, 2018 |
| 53174 - NRC Website | |
Massachusetts Institute Of Tech with Non | |
WEEKMONTHYEARENS 531742018-01-17T17:28:00017 January 2018 17:28:00
[Table view]Non Non-Power Reactor Manually Scrammed ENS 531572018-01-08T21:00:0008 January 2018 21:00:00 Non Technical Specification Violation ENS 477702012-03-25T09:15:00025 March 2012 09:15:00 Non Research Reactor Manual Scram ENS 472292011-08-12T22:00:00012 August 2011 22:00:00 Non Potential Violation of Technical Specifications ENS 467842011-04-24T11:00:00024 April 2011 11:00:00 Non Violation of Technical Specification 3.2.3, Reactor Protection System ENS 467832011-04-22T02:30:00022 April 2011 02:30:00 Non Violation of Technical Specification 3.3.2.2, Core Purge Blower 2018-01-08T21:00:00 | |