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    Vapor Degreasing Of A Large Tank (1995)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Vapor degreasing procedure provides for removal of relatively non-volatile oils and greases from insides of large vessels. Solvent refluxed to concentrate less volatile contaminants at bottom. Procedure ensures required degrees of cleaniness in high-purity chemical processing and high-vacuum processing vessels. Devised for cleaning complexly-shaped stainless-steel vacuum chamber containing numerous difficult-to-clean features like screw holes and abutting surfaces. Solvent can be chlorofluorocarbon, if means provided to recover most and minimize portion escaping into air. Alternatively, hydrocarbon or other flammable solvent used, provided flammability tolerable in particular application.
    Keywords: PHYSICAL SCIENCES
    Type: NPO-19258 , NASA Tech Briefs (ISSN 0145-319X); 19; 4; P. 48
    Format: text
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    NASA TECHNICAL REPORTS
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