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Title: Electrochemical Decontamination of Painted and Heavily Corroded Metals

Abstract

The radioactive metal wastes that are generated from nuclear fuel plants and radiochemical laboratories are mainly contaminated by the surface deposition of radioactive isotopes. There are presently several techniques used in removing surface contamination involving physical and chemical processes. However, there has been very little research done in the area of soiled, heavily oxidized, and painted metals. Researchers at Los Alamos National Laboratory have been developing electrochemical procedures for the decontamination of bare and painted metal objects. These methods have been found to be effective on highly corroded as well as relatively new metals. This study has been successful in decontaminating projectiles and shrapnel excavated during environmental restoration projects after 40+ years of exposure to the elements. Heavily corroded augers used in sampling activities throughout the area were also successfully decontaminated. This process has demonstrated its effectiveness and offers several advantages over the present metal decontamination practices of media blasting and chemical solvents. These advantages include the addition of no toxic or hazardous chemicals, low operating temperature and pressure, and easily scaleable equipment. It is in their future plans to use this process in the decontamination of gloveboxes destined for disposal as TRU waste.

Authors:
; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (US)
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
760117
Report Number(s):
LA-UR-98-3989
TRN: US0004450
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 4th International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe, Warsaw (PL), 1998; Other Information: PBD: 8 Sep 1998
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ALPHA-BEARING WASTES; DECONTAMINATION; GLOVEBOXES; METALS; PROJECTILES; SURFACE CONTAMINATION; CORROSION PRODUCTS; ELECTROCHEMICAL CELLS

Citation Formats

Marczak, S., Anderson, J., and Dziewinski, J. Electrochemical Decontamination of Painted and Heavily Corroded Metals. United States: N. p., 1998. Web.
Marczak, S., Anderson, J., & Dziewinski, J. Electrochemical Decontamination of Painted and Heavily Corroded Metals. United States.
Marczak, S., Anderson, J., and Dziewinski, J. Tue . "Electrochemical Decontamination of Painted and Heavily Corroded Metals". United States. https://www.osti.gov/servlets/purl/760117.
@article{osti_760117,
title = {Electrochemical Decontamination of Painted and Heavily Corroded Metals},
author = {Marczak, S. and Anderson, J. and Dziewinski, J.},
abstractNote = {The radioactive metal wastes that are generated from nuclear fuel plants and radiochemical laboratories are mainly contaminated by the surface deposition of radioactive isotopes. There are presently several techniques used in removing surface contamination involving physical and chemical processes. However, there has been very little research done in the area of soiled, heavily oxidized, and painted metals. Researchers at Los Alamos National Laboratory have been developing electrochemical procedures for the decontamination of bare and painted metal objects. These methods have been found to be effective on highly corroded as well as relatively new metals. This study has been successful in decontaminating projectiles and shrapnel excavated during environmental restoration projects after 40+ years of exposure to the elements. Heavily corroded augers used in sampling activities throughout the area were also successfully decontaminated. This process has demonstrated its effectiveness and offers several advantages over the present metal decontamination practices of media blasting and chemical solvents. These advantages include the addition of no toxic or hazardous chemicals, low operating temperature and pressure, and easily scaleable equipment. It is in their future plans to use this process in the decontamination of gloveboxes destined for disposal as TRU waste.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {9}
}

Conference:
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