ASTM E3398-23
(Guide)Standard Guide for Digital Neutron Radiography
Standard Guide for Digital Neutron Radiography
SIGNIFICANCE AND USE
4.1 Purpose—Practices to be employed for the radiographic examination of materials and components with neutrons using digital neutron detectors are outlined herein. They are intended as a guide for the assessment of a digital neutron radiograph’s characteristics. For information on neutron beam lines for imaging and film neutron radiography, refer to Guide E748.
4.2 Limitations—Acceptance standards have not been established for any material or production process. Neutron radiography, whether performed by means of a reactor, an accelerator, subcritical assembly, or radioactive source, will be consistent in sensitivity and spatial resolution only if the consistency of all details of the technique, such as neutron source, collimation, geometry, imaging system, etc., are maintained. This guide is limited to the use of digital neutron detectors in combination with neutron conversion materials for image recording. This guide is intended for use with thermal and cold neutron spectrums. The production of thermal neutron radiographs by employing the use of film and appropriate conversion screens is covered in Guide E748.
4.3 Interpretation and Acceptance Standards—Interpretat- ion and acceptance standards are not covered by this guide. Designation of accept-reject standards is recognized to be within the cognizance of product specifications.
4.4 Other Aspects of the Neutron Radiographic Process—For many important aspects of neutron radiography such as technique, files, viewing of radiographs, storage of radiographs, film processing, and record keeping, refer to Guide E94, which covers these aspects for X-ray radiography. (See Section 2.)
SCOPE
1.1 This guide covers the evaluation, qualification, and quantification of digital neutron images. These images can be acquired by many methods, including: neutron sensitive imaging plates (Computed Radiography – CR), Digital Detector Arrays – DDA’s (amorphous silicon, CMOS, CCD, etc.), micro-channel plates, neutron sensitive fluoroscopes, neutron sensitive scintillators coupled to optical cameras, digitized radiographic films, and linear diode arrays.
1.2 This guide does not purport to establish what is considered an acceptable image but is intended to only give guidance on digital neutron imaging, as well as image quality metrics of importance, and how they can be measured and reported.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
1.5 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.
General Information
Relations
Standards Content (Sample)
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.
Designation: E3398 − 23
Standard Guide for
1
Digital Neutron Radiography
This standard is issued under the fixed designation E3398; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E748 Guide for Thermal Neutron Radiography of Materials
E803 Test Method for Determining the L/D Ratio of Neutron
1.1 This guide covers the evaluation, qualification, and
Radiography Beams
quantification of digital neutron images. These images can be
E1316 Terminology for Nondestructive Examinations
acquired by many methods, including: neutron sensitive imag-
E1647 Practice for Determining Contrast Sensitivity in Ra-
ing plates (Computed Radiography – CR), Digital Detector
diology
Arrays – DDA’s (amorphous silicon, CMOS, CCD, etc.),
E2007 Guide for Computed Radiography
micro-channel plates, neutron sensitive fluoroscopes, neutron
E2597 Practice for Manufacturing Characterization of Digi-
sensitive scintillators coupled to optical cameras, digitized
tal Detector Arrays
radiographic films, and linear diode arrays.
E2736 Guide for Digital Detector Array Radiography
1.2 This guide does not purport to establish what is consid-
E2861 Test Method for Measurement of Beam Divergence
ered an acceptable image but is intended to only give guidance
and Alignment in Neutron Radiologic Beams
on digital neutron imaging, as well as image quality metrics of
importance, and how they can be measured and reported.
3. Terminology
1.3 The values stated in SI units are to be regarded as
3.1 Definitions—For definitions of terms used in these
standard. No other units of measurement are included in this
practices, see Terminology E1316, Section H.
standard.
4. Significance and Use
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 4.1 Purpose—Practices to be employed for the radiographic
examination of materials and components with neutrons using
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- digital neutron detectors are outlined herein. They are intended
as a guide for the assessment of a digital neutron radiograph’s
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor- characteristics. For information on neutron beam lines for
dance with internationally recognized principles on standard- imaging and film neutron radiography, refer to Guide E748.
ization established in the Decision on Principles for the
4.2 Limitations—Acceptance standards have not been estab-
Development of International Standards, Guides and Recom-
lished for any material or production process. Neutron
mendations issued by the World Trade Organization Technical
radiography, whether performed by means of a reactor, an
Barriers to Trade (TBT) Committee.
accelerator, subcritical assembly, or radioactive source, will be
consistent in sensitivity and spatial resolution only if the
2. Referenced Documents
consistency of all details of the technique, such as neutron
2
2.1 ASTM Standards:
source, collimation, geometry, imaging system, etc., are main-
E94 Guide for Radiographic Examination Using Industrial
tained. This guide is limited to the use of digital neutron
Radiographic Film
detectors in combination with neutron conversion materials for
E545 Test Method for Determining Image Quality in Direct
image recording. This guide is intended for use with thermal
Thermal Neutron Radiographic Examination
and cold neutron spectrums. The production of thermal neutron
radiographs by employing the use of film and appropriate
conversion screens is covered in Guide E748.
1
This guide is under the jurisdiction of ASTM Committee E07 on Nondestruc-
tive Testing and is the direct responsibility of Subcommittee E07.05 on Radiology
4.3 Interpretation and Acceptance Standards—Interpretat-
(Neutron) Method.
ion and acceptance standards are not covered by this guide.
Current edition approved July 1, 2023. Published July 2023. DOI: 10.1520/
Designation of accept-reject standards is recognized to be
E3398-23
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or within the cognizance of product specifications.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.4 Other Aspects of the Neutron Radiographic Process—
Standards volume information, refer to the standard’s Document Summary page on
the ASTM websi
...
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