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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 45681 | 4 February 2010 22:20:00 | Agreement State | Agreement State Report - Faulty Shutter on Fixed Guage | Licensee, Georgia Pacific Toledo, notified the Agency (Oregon Department of Health and Radiation Protection) that the 6 month inspection on their K-Ray fixed gauge (model 7062B) revealed the shutter would not close correctly. The gauge was still able to perform it's function as a level indicator on a coal bin. Licensee called the manufacturer for repairs. Source is 50 mCi of Cs-137. Incident Report # 10-0005
On February 10, 2010 the licensee's RSO (Radiation Safety Officer) and the vendor technician verified the fixed gauge shutter functioned correctly. It was observed that the time constant on the detector was quite long. The RSO and the vendor determined that the initial report of a shutter malfunction was in error because personnel did not wait long enough to see the result of closing the shutter on the control system. The licensee will add a note to the inventory form for this source as to the name of the control tag for the detector in order to verify the closed/open shutter transition and to see an adequate response. No other action is required on this incident and the State of Oregon recommends that that the incident be closed. Notified the R4DO (Cain) and FSME (McIntosh). |