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NASA Cleaning and Cleaning Verification Issues The Search for New Cleaning Solvents

NASA Cleaning and Cleaning Verification Issues The Search for New Cleaning Solvents. Presented by: Christina Y. Piña Arpin. Why Do I Care About Precision Cleaning, and Who Else Cares?. What is Precision Cleaning?. Precision Cleaning. Cleaning. Quantified level of cleanliness.

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NASA Cleaning and Cleaning Verification Issues The Search for New Cleaning Solvents

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  1. NASA Cleaning and Cleaning Verification IssuesThe Search for New Cleaning Solvents Presented by: Christina Y. Piña Arpin

  2. Why Do I Care About Precision Cleaning, and Who Else Cares?

  3. What is Precision Cleaning? Precision Cleaning Cleaning • Quantified level of cleanliness. • Down to the micron level

  4. How is Precision Cleaning Performed? Aqueous Cleaning Solvent Final Cleaning (Verification) Solvents IPA H2O HFE 7100 AK 225G NVR/TOC Particle count • Ultrasonic tanks • Caustic (ex: Oakite 126) • Alkaline (ex: Oakite 31)

  5. Base line solvent • Base line Solvent: A Solvent that is fully verified and to which all other solvents are compared to for verification. • Currently AK 225G

  6. Why Should You Care About What Solvent is Used? • Montreal Protocol • ODS (ozone depleting substance) • CFC 113 – Historical solvent of choice (90s) • HCFC (AK 225G) – Current base line solvent of choice • Base line Solvent Replacement by 2015 • ?Unknown ? This is a PROBLEM!

  7. Why Should You Care About What Solvent is Used? • New solvents have been developed • Need Verification • Long expensive studies This is the SOLUTION!

  8. Precision cleaning and the Roles That Solvents Play • Material compatibility • Media compatibility • Example: Oxygen • Health Considerations • Environmental considerations • NVR • Take off • Leave behind • Compatibility with contamination • Organic • inorganic

  9. We Need Your Participation in Our Working Group. Email me at : christina.y.pina.arpin@nasa.gov Call : 575-524-5195

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