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Start date | Site | Region | Reactor type | Event description | |
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ENS 57147 | 28 May 2024 17:00:00 | Cleveland-Cliffs | NRC Region 3 | The following is a summary of information obtained from the licensee via phone: The assistant radiation safety officer (ARSO) received a notification from their Tilden Mine site that a Ohmart Vega (model SH-F1B-0) containing 1 mCi of Cs-137 had a stuck open shutter. The ARSO is evaluating whether to contact Vega to schedule a technician to service the shutter or to amend their NRC license to allow them to service the shutter. The nuclear gauge is in a location inaccessible to personnel and there is no additional exposure risk to personnel or the public. |