ASTM E1002 - 11

    Standard Practice for Leaks Using Ultrasonics

    Active Standard ASTM E1002 | Developed by Subcommittee: E07.08

    Book of Standards Volume: 03.03


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    Significance and Use

    Practice AThis practice is useful for locating and estimating the size of pressurized gas leaks, either as a quality control test or as a field inspection procedure. It is also valuable as a pretest before other more time consuming and more sensitive leak tests are employed. It should not be used exclusively to locate highly toxic or explosive gas leaks.

    Practice BThis practice is useful for locating leaks in systems that are not under pressure or vacuum as either a quality control or a field inspection procedure. It is not useful for estimating the size of a leak. It is also valuable as a pretest before leak tests using pressurized gas methods and more sensitive leak tests are employed.

    1. Scope

    1.1 Practice A, PressurizationThis practice covers procedures for calibration of ultrasonic instruments, location, and estimated measurements of gas leakage to atmosphere by the airborne ultrasonic technique.

    1.2 In general practice this should be limited to leaks detected by two classifications of instruments, Class I and Class II. Class I instruments should have a minimum detectable leak rate of 6.7 × 107 mol/s (1.5 × 102 std. cm3/s at 0°C) or more for the pressure method of gas leakage to atmosphere. Class II instruments should have a minimal detectable leak rate of 6.7 × 106 mol/s (1.5 × 101 std. cm3/s at 0°C) or more for the pressure method of gas leakage to atmosphere. Refer to Guide E432 for additional information.

    1.3 Practice B, Ultrasonic TransmitterFor object under test not capable of being pressurized but capable of having ultrasonic tone placed/injected into the test area to act as an ultrasonic leak trace source.

    1.3.1 This practice is limited to leaks producing leakage of 6.7 × 106 mol/s (1.5 × 101 std. cm3/s at 0°C) or greater.

    1.4 The values stated in SI units are to be regarded as the standard.

    1.5 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 consult and 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

    E432 Guide for Selection of a Leak Testing Method

    E543 Specification for Agencies Performing Nondestructive Testing

    E1316 Terminology for Nondestructive Examinations

    Other Documents

    NAS-410 Certification and Qualification of Nondestructive Personnel Available from Aerospace Industries Association of America, Inc. (AIA), 1000 Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.


    ICS Code

    ICS Number Code 19.100 (Non-destructive testing)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/E1002-11

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