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The Use of HFC (CFC Free) Processes at the NASA Stennis Space CenterThe search for ozone depleting alternative chemicals was heightened when, in 1990, the more than 65 countries that had signed the Montreal Protocol agreed to phase out completely by the year 2000. In 1992, then-president Bush advanced this date for the United States to January l, 1996. In 1991, it was realized that the planned phase out and eventual elimination of ozone depleting chemicals imposed by the Montreal Protocol and the resulting Clean Air Act (CAA) amendments would impact the cleaning and testing of aerospace hardware at the NASA Stennis Space Center. Because of this regulation, the Test & Engineering Sciences Laboratory has been working on solvent conversion studies to replace CFC-113. Aerospace hardware and test equipment used in rocket propulsion systems require extreme cleanliness levels to function and maintain their integrity. Because the cleanliness of aerospace hardware will be affected by the elimination of CFC-113; alternate cleaning technologies, including the use of fluoridated solvents have been studied as potential replacements. Several aqueous processes have been identified for cleaning moderately sized components. However, no known aqueous alternative exists for cleaning and validating T&ME and complex geometry based hardware. This paper discusses the choices and the methodologies that were used to screen potential alternatives to CFC-113.
Document ID
Acquisition Source
Document Type
Conference Paper
Ross, Richard H.
(Lockheed Martin Corp. Bay Saint Louis, MS United States)
Date Acquired
August 17, 2013
Publication Date
March 1, 1997
Publication Information
Publication: Second Aerospace Environmental Technology Conference
Subject Category
Environment Pollution
Distribution Limits
Work of the US Gov. Public Use Permitted.
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