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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 51400 | 16 September 2015 04:00:00 | Agreement State | Florida Agreement State Report - Fixed Nuclear Gauge with Stuck Open Shutter | The following information was received from the State of Florida via email: The RSO (Radiation Safety Officer) at Georgia Pacific Corporation in Palatka, Florida called to report (to the State of Florida that) a fixed Cesium-137 source installed on the top half of a tank has the shutter stuck open. Device originally had 2,000 mCi, but now is estimated to have 892 mCi of Cs-137. This same equipment was reported with the same defect on April 9, 2015 (FL15-025). There is no report of any over exposure of personnel and no leaks (confirmed by leak test). The location of the device prohibits the access of personnel and the shutter is only closed when maintenance or repair is performed. The RSO has put in a work order for repair and will provide a copy of a report confirming the equipment was serviced/repaired back in April. Initial NRC Event Notification #50971. The fixed gauge manufacturer is Kay-Ray, Model number - 7063P, serial number 10682F. FL Incident Number: FL 15-094 | ||
| ENS 45704 | 11 February 2010 06:00:00 | Agreement State | Agreement State Report - Failure of Fixed Gauge Shutter Mechanisms to Close | The following excerpted information was received via e-mail: During shutter checks performed by the licensee, it was discovered that four of their fixed gauge shutter mechanisms were unable to be closed. The following is information on those gauges: (1) Berthold, Model LB-7440-D, source SN FR288, Cs-137, 30 mCi; (2) Berthold, Model LB-300-L, source SN 1080/1-05-98, Co-60, 1.16 mCi; (3) Berthold Model LB-7440-D, source SN 1080/2-05-98, Co-60, 1.65 mCi; and (4) Berthold, Model LB-7442-D, source SN 2572-8-90, Cs-137, 250 mCi. On gauge 1 the shutter handle broke off. On gauges 2, 3, and 4 the shutter stuck open. The licensee has requested service from the gauge manufacturer. Mississippi Incident Number: MS-10002. | ||
| ENS 44750 | 18 December 2008 06:00:00 | Agreement State | Agreement State Report - Potentially Leaking Source | The following information was provided by the state via e-mail: On December 18, 2008, the Arkansas Department of Health, Radioactive Materials Program received a written report of a potentially leaking source at Georgia Pacific Corporation in Crossett, Arkansas, General License Number GL-0074. The Source is a Generally Licensed Device, Honeywell, Model 4201 Series Thickness Gauge, Serial Number OV522. On November 8, 2008 a Field Services Specialist noted abnormal readings from the device and a hole in the kapton window. Although it appears that upon arrival at the Honeywell facility in Duluth, Georgia the source is potentially leaking it is unknown exactly when the source began to leak. According to Honeywell, no contamination was found at the licensee's facility in Crossett, Arkansas. There is possible personnel contamination (Field Services Specialist) and the Department is continuing to investigate this event and will provide a follow up when more information is confirmed. A subsequent conversation with the State of Arkansas revealed that the source is Promethium (Pm-147) with an activity level of approximately 18.5 GBq (500 milliCuries) and the State of Georgia was notified by Honeywell of the potentially leaking source.
The kapton window was found to be torn. The Field Services Specialist appears to have damaged the source capsule window when attempting to remove a piece of kapton window, using an unapproved procedure. The root cause of this event appears to be a failure to follow procedures. The Field Services Specialist exceeded his procedures and appears to have damaged the source capsule. Corrective actions included re-training the Field Services Specialist and a Safety Alert was sent to all personnel. The analysis of the potentially leaking sealed source appeared to be less than 0.005 microcuries (185 Bq). It is believed that there was no personnel contamination. The initial reports of contamination were believed to have been caused by misinterpretation of survey results. The department considers this event closed. Notified R1DO (Miller), R4DO (Walker), and FSME EO (White). |