ENS 44986: Difference between revisions
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| event date = 02/03/2009 PDT | | event date = 02/03/2009 PDT | ||
| last update date = 07/01/2009 | | last update date = 07/01/2009 | ||
| title = Agreement State Report - Potential Overexposure | | title = Agreement State Report - Potential Overexposure to the Lungs | ||
| event text = The following report was received from the state of Washington via e-mail: | | event text = The following report was received from the state of Washington via e-mail: | ||
On February 9 2009, a worker was sent for a lung count at the Battelle (Pacific Northwest National Laboratory) lung counter for a bioassay measurement. The lung count was ordered due to the worker working in an area where airborne contamination levels could cause more then 2.5 DAC-hrs (with respiratory protection factors applied), and greater then 520 DAC-hrs assuming no respiratory protection was worn in one day. The reason for requiring this count was to ensure that measures used to protect the workers were functioning properly. The workers first lung count detected approximately 0.2 nCi of Am-241. Assuming the exposure was from 10 days prior, the intake was approximately 1.9 nCi Am-241. The annual limit of intake for Am-241 is 6 nCi (1micron AMAD particle size). The estimated dose was about 1/3 of the annual limit, or 16 REM CDE (Annual limit 50 REM). The worker had previous whole body exposure, but this added amount did not cause a limit to be exceeded. | On February 9 2009, a worker was sent for a lung count at the Battelle (Pacific Northwest National Laboratory) lung counter for a bioassay measurement. The lung count was ordered due to the worker working in an area where airborne contamination levels could cause more then 2.5 DAC-hrs (with respiratory protection factors applied), and greater then 520 DAC-hrs assuming no respiratory protection was worn in one day. The reason for requiring this count was to ensure that measures used to protect the workers were functioning properly. The workers first lung count detected approximately 0.2 nCi of Am-241. Assuming the exposure was from 10 days prior, the intake was approximately 1.9 nCi Am-241. The annual limit of intake for Am-241 is 6 nCi (1micron AMAD particle size). The estimated dose was about 1/3 of the annual limit, or 16 REM CDE (Annual limit 50 REM). The worker had previous whole body exposure, but this added amount did not cause a limit to be exceeded. |
Revision as of 22:11, 1 March 2018
Where | |
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Perma-Fix Northwest Richland, Washington (NRC Region 4) | |
License number: | Wn-I0508-1 |
Organization: | Wa Division Of Radiation Protection |
Reporting | |
Agreement State | |
Time - Person (Reporting Time:+1662.35 h69.265 days <br />9.895 weeks <br />2.277 months <br />) | |
Opened: | Sean Murphy 12:21 Apr 13, 2009 |
NRC Officer: | Mark Abramovitz |
Last Updated: | Jul 1, 2009 |
44986 - NRC Website | |