ENS 43620
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ENS Event | |
|---|---|
15:30 Sep 6, 2007 | |
| Title | Agreement State Report - California - Strontium 90 Source of Unknown Origin Found |
| Event Description | The licensee provided the following information via email:
On September 6, 2007 at approximately 8:30 a.m., [REDACTED] the Brea Olinda Landfill notified RHB-Brea that a radiation alarm had been set off from a transfer truck carrying a load of waste from Taormina (CVT). The maximum reading at the surface of the truck was 0.29 mr/hr. A DOT exemption (CA-CA-07-32) was issued and the truck was allowed to return to Taormina. At approximately 1:55 p.m. an RHB inspector arrived to survey and identify the waste. The item recovered appeared to be a Sr-90 eye applicator. The dose rate was approximately 100 mr/hr at approximately 1 foot from the open source and approximately 10 mr/hr at 1 foot behind the plexiglass shield that comprised part of the handle, with a background of 13 microR/hr. The source was collected by RHB, and is in safe storage, pending an investigation as to its origin. RHB intends to work with a local manufacturer and distributor to quantify the source and determine the model and serial number. The source did not appear to be compromised. Since a typical Sr-90 source is between 30 milliCuries and 100 milliCuries, and the criteria for an abnormal occurrence for a Sr-90 source is 81 milliCuries, we are unable to determine if this incident is an abnormal occurrence at this time. |
| Where | |
|---|---|
| Unknown Brea, California (NRC Region 4) | |
| License number: | UNKNOWN |
| Organization: | California Radiation Control Prgm |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+4.13 h0.172 days <br />0.0246 weeks <br />0.00566 months <br />) | |
| Opened: | Barbara Hamrick 19:38 Sep 6, 2007 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Sep 6, 2007 |
| 43620 - NRC Website | |
Unknown with Agreement State | |
WEEKMONTHYEARENS 561482022-10-05T04:00:0005 October 2022 04:00:00
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