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New Reduced price! NASA MSFC-PROC-404 Rev. A View larger

NASA MSFC-PROC-404 Rev. A

M00001017

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NASA MSFC-PROC-404 Rev. A Procedure Gases, Drying and Preservation Cleanliness Level and Inspection Methods

standard by National Aeronautics and Space Administration, 01/30/1990

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This procedure specifies the cleanliness requirements at gas utilization points for gases used in cleaning, testing, drying, and preservation operations of space vehicle systems, subsystems, assemblies, components, and support equipment. Gases having super-critical cleanliness requirements (such as for gas bearings) are specifically exempt. Included are the procedures, materials, and equipment required to verify that gas distribution system cleanliness is adequate to assure the specified cleanliness level of gases at the gas utilization points.