ASTM E2900 - 12

    Standard Practice for Spacecraft Hardware Thermal Vacuum Bakeout

    Active Standard ASTM E2900 | Developed by Subcommittee: E21.05

    Book of Standards Volume: 15.03


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    ASTM E2900

    1. Scope

    1.1 This practice establishes methods for thermal vacuum bakeout of spacecraft and spacecraft components.

    1.2 This practice defines the equipment, environment, and certification criteria for each type of bakeout.

    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.

    1.5 Determination of the acceptable molecular outgassing, selection of the bakeout method, and determination of the specific test completion criteria are the responsibility of the user organization.

    1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    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 Standards

    FED-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 Code

    ICS Number Code 49.140 (Space systems and operations)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/E2900-12

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    ASTM E2900

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