Supercritical-fluid carbon dioxide (SCCO{sub 2}) cleaning of nuclear weapon components

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Supercritical fluid carbon dioxide (SCCO{sub 2}) has been evaluated as a cleaning solvent for the cleaning of plutonium (Pu) metal parts. The results of the evaluation show that SCCO{sub 2} is an effective alternative to halogenated solvents that are conventionally used for removing organic and inorganic contaminants from the surface of these parts. The cleaning process was demonstrated at the laboratory scale for steel and uranium substrates and has been found to be compatible with Pu. The efficacy of this cleaning method is found to be dependent on process conditions of pressure, temperature, fluid-flow rate, as well as cleaning time. ... continued below

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9 p.

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Taylor, C. M. V.; Sivils, L.D. & Rubin, J.B. May 1, 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 24 times . More information about this article can be viewed below.

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  • Los Alamos National Laboratory
    Publisher Info: Los Alamos National Lab., Ceramic Science and Technology Group, NM (United States)
    Place of Publication: New Mexico

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Description

Supercritical fluid carbon dioxide (SCCO{sub 2}) has been evaluated as a cleaning solvent for the cleaning of plutonium (Pu) metal parts. The results of the evaluation show that SCCO{sub 2} is an effective alternative to halogenated solvents that are conventionally used for removing organic and inorganic contaminants from the surface of these parts. The cleaning process was demonstrated at the laboratory scale for steel and uranium substrates and has been found to be compatible with Pu. The efficacy of this cleaning method is found to be dependent on process conditions of pressure, temperature, fluid-flow rate, as well as cleaning time. Process parameters of P > 2,500 psi, T > 40 C, and moderate fluid flow rates, produced good cleaning results in less than 10 minutes using a simple flow-through process configuration. Within the parameter range studied, cleaning efficiency generally improved with increasing process pressure and flow rate. SCCO{sub 2} cleaning is suitable for a variety of component cleaning tasks and is adaptable to precision cleaning requirements. The SCCO{sub 2} cleaning process is currently being developed for deployment for weapons production at LANL.

Physical Description

9 p.

Notes

OSTI as DE98002922

Source

  • WAC `98: world automation congress, Anchorage, AK (United States), 10-14 May 1998

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  • Other: DE98002922
  • Report No.: LA-UR--97-4420
  • Report No.: CONF-980514--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 650294
  • Archival Resource Key: ark:/67531/metadc704626

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • May 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Nov. 3, 2016, 1:17 p.m.

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Taylor, C. M. V.; Sivils, L.D. & Rubin, J.B. Supercritical-fluid carbon dioxide (SCCO{sub 2}) cleaning of nuclear weapon components, article, May 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc704626/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.