ASTM E2861-16(2020) PDF

Scope: 1.1 This test method covers the design, materials, manufacture, and use of a divergence and alignment indicator (DAI) for measuring the effective divergence of a thermal neutron beam used for neutron imaging as well as determining the alignment of the imaging plane relative (usually normal) to the centerline of the beam. This test method is applicable to thermal neutron imaging. 1.2 The values stated in SI units are to be regarded as the standard. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E2861-16(2020) Referenced Document

ASTM E1316 Standard Terminology for Nondestructive Examinations*， 2024-02-01 Update
ASTM E543 Standard Practice for Agencies Performing Nondestructive Testing
ASTM E545 Standard Test Method for Determining Image Quality in Direct Thermal Neutron Radiographic Examination
ASTM E748 Standard Practices for Thermal Neutron Radiography of Materials
ASTM E803 Standard Test Method for Determining the L/D?Ratio of Neutron Radiography Beams

2020 ASTM E2861-16(2020) Standard Test Method for Measurement of Beam Divergence and Alignment in Neutron Radiologic Beams
2016 ASTM E2861-16 Standard Test Method for Measurement of Beam Divergence and Alignment in Neutron Radiologic Beams
2011 ASTM E2861-11 Standard Test Method for Measurement of Beam Divergence and Alignment in Neutron Radiologic Beams