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1.3 The methods defined in this practice are intended to reduce component outgassing rates to levels necessary to meet mission performance requirements of the contamination sensitive hardware. Times, temperatures, and configurations contained in this document have been found to provide satisfactory results. Experienced operators may find that other, similar times, temperatures and configurations have provided satisfactory results. If deviations from these criteria are deemed appropriate, they should be detailed in the bakeout report.
1.4 This practice describes three bakeout methods: Method A, using prescribed time and pressure criteria; Method B, using prescribed QCM stabilization rate criteria; and Method C, which measures the QCM deposition rate.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E296 Practice for Ionization Gage Application to Space Simulators
E834 Practice for Determining Vacuum Chamber Gaseous Environment Using a Cold Finger
E1234 Practice for Handling, Transporting, and Installing Nonvolatile Residue (NVR) Sample Plates Used in Environmentally Controlled Areas for Spacecraft
E1235 Test Method for Gravimetric Determination of Nonvolatile Residue (NVR) in Environmentally Controlled Areas for Spacecraft
E1546 Guide for Development of Fire-Hazard-Assessment Standards
E1549 Specification for ESD Controlled Garments Required in Cleanrooms and Controlled Environments for Spacecraft for Non-Hazardous and Hazardous Operations
E1559 Test Method for Contamination Outgassing Characteristics of Spacecraft Materials
E1560 Test Method for Gravimetric Determination of Nonvolatile Residue From Cleanroom Wipers
E1731 Test Method for Gravimetric Determination of Nonvolatile Residue from Cleanroom Gloves
E2311 Practice for QCM Measurement of Spacecraft Molecular Contamination in Space
Other StandardsFED-STD-209 Federal Standard, Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones, FED-STD-209 may be used in lieu of ISO-14644 by mutual agreement of the parties in the contract.
ICS Number Code 49.140 (Space systems and operations)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E2900-12, Standard Practice for Spacecraft Hardware Thermal Vacuum Bakeout, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top