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    Current and Future Neutron Radiologic NDT Standards

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    Two groups are active in producing standards which are used in neutron radiology (NR) activities within the United States. On the national level, ASTM has three standards which address the neutron radiography method: ASTM Practices for Thermal Neutron Radiography of Materials (E 748), ASTM Method for Determining Image Quality in Direct Thermal Neutron radiographic Testing (E 545), and ASTM Method for Determining the L/D Ratio of Neutron Radiography Beams (E 803). The International Organization for Standardization (ISO) has a working group which is developing three standards that also address the neutron radiography method. No ASTM or ISO standards exist for the neutron radioscopic NDT method.

    Future ASTM standards will address the neutron radioscopic method, neutron radiographic dimensioning, and neutron radiologic system characterization. It is expected that similar efforts will be undertaken in ISO. Given the relatively small community providing neutron radiologic NDT services, international cooperation already in place will most likely continue to grow. This paper reviews current and future trends in NR standards and the impact of these standards on the world market.


    standards, neutron radiography, neutron radioscopy, neutron radiology, nondestructive testing

    Author Information:

    Brenizer, JS
    Associate professor, Nuclear Engineering, University of Virginia, Charlottesville, VA

    Committee/Subcommittee: E07.05

    DOI: 10.1520/STP23805S