Analysis of Zinc 65 Contamination After Vacuum Thermal Process
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Radioactive contamination with a gamma energy emission consistent with 65Zn was detected in a glovebox following a vacuum thermal process. The contaminated components were removed from the glovebox and subjected to examination. Selected analytical techniques were used to determine the nature of the precursor material, i.e., oxide or metallic, the relative transferability of the deposit and its nature. The deposit was determined to be borne from natural zinc and was further determined to be deposited as a metallic material from vapor.
KeywordsDeposits Contamination Vacuum effects Metallurgical investigation
This document was prepared in conjunction with work accomplished under Contract No. DE-AC09-08SR22470 with the U.S. Department of Energy. The authors would like to acknowledge the support of Zane Nelson and Kevin Kalbaugh for photography and sample preparation; Cecilia Diprete, David Diprete, Jacob Venzie, Raymond Dewberry, Leah Arrigo, and Frank Pennebaker for analytical chemistry support for the gamma scans and mass spectroscopy; and Matt Weigle, Cindy Amans, J. Roy Windham, and A. Mignon Ford for radiation control support.
Conflict of interest
This work was prepared under an agreement with and funded by the U.S. Government. Neither the U. S. Government or its employees, nor any of its contractors, subcontractors or their employees, makes any express or implied: 1. warranty or assumes any legal liability for the accuracy, completeness, or for the use or results of such use of any information, product, or process disclosed; or 2. representation that such use or results of such use would not infringe privately owned rights; or 3. endorsement or recommendation of any specifically identified commercial product, process, or service. Any views and opinions of authors expressed in this work do not necessarily state or reflect those of the United States Government, or its contractors, or subcontractors.
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