Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators

SIGNIFICANCE AND USE
5.1 The only truly valid image quality indicator is a material or component, equivalent to the part being neutron radiographed, with a known standard discontinuity, inclusion, omission, or flaw (reference standard comparison part). The SI is designed to substitute for the reference standard, providing qualitative information on hole and gap sensitivity in a single unit. Fabrication in accordance with this practice is vital for accurate and consistent measurements.  
5.2 This practice shall be followed for the fabrication of all SIs to be used with Test Method E545 to determine image quality in direct thermal neutron radiography. Devices constructed to previous versions of this practice, or Test Method E545 for devices built between 1981 and 1991, can also be used.
SCOPE
1.1 This practice covers the fabrication of Sensitivity Indicators (SI), which can be used to determine the relative quality of film radiographic images produced by direct, thermal neutron radiographic examination.  
1.2 Units—The values stated in inch-pound units are to be regarded as 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.

General Information

Status
Published
Publication Date
30-Nov-2022
Current Stage
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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: E2023 − 22
Standard Practice for
1
Fabrication of Neutron Radiographic Sensitivity Indicators
This standard is issued under the fixed designation E2023; 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 radiograph. It consists of a step wedge containing gaps and
holes of known dimensions. Visual inspection of the image of
1.1 This practice covers the fabrication of Sensitivity Indi-
this device provides subjective information regarding total
cators (SI), which can be used to determine the relative quality
radiographic sensitivity with respect to the step-block material.
of film radiographic images produced by direct, thermal
neutron radiographic examination.
4.2 Neutron radiography practices are discussed in Guide
E748. The neutron radiograph used to determine image quality
1.2 Units—The values stated in inch-pound units are to be
using the SI shall meet the requirements of Test Method E545.
regarded as standard.
1.3 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
5.1 Theonlytrulyvalidimagequalityindicatorisamaterial
responsibility of the user of this standard to establish appro-
or component, equivalent to the part being neutron
priate safety, health, and environmental practices and deter-
radiographed, with a known standard discontinuity, inclusion,
mine the applicability of regulatory limitations prior to use.
omission, or flaw (reference standard comparison part). The SI
1.4 This international standard was developed in accor-
is designed to substitute for the reference standard, providing
dance with internationally recognized principles on standard-
qualitative information on hole and gap sensitivity in a single
ization established in the Decision on Principles for the
unit. Fabrication in accordance with this practice is vital for
Development of International Standards, Guides and Recom-
accurate and consistent measurements.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5.2 This practice shall be followed for the fabrication of all
SIs to be used with Test Method E545 to determine image
2. Referenced Documents
quality in direct thermal neutron radiography. Devices con-
2
2.1 ASTM Standards:
structed to previous versions of this practice, or Test Method
E543 Specification forAgencies Performing Nondestructive
E545 for devices built between 1981 and 1991, can also be
Testing
used.
E545 Test Method for Determining Image Quality in Direct
Thermal Neutron Radiographic Examination
6. Basis of Application
E748 Guide for Thermal Neutron Radiography of Materials
6.1 Qualification of Nondestructive Agencies—If specified
E1316 Terminology for Nondestructive Examinations
in the contractual agreement, NDT agencies shall be qualified
3. Terminology
and evaluated as described in Specification E543. The appli-
cable edition of Specification E543 shall be specified in the
3.1 Definitions—For definitions of terms used in this
contractual agreement.
practice, see Terminology E1316, Section H.
6.2 Procedures and Techniques—The procedures and tech-
4. Summary of Practice
niquestobeutilizedshallbeasdescribedinthispracticeunless
4.1 The Sensitivity Indicator (SI) is used for qualitative
otherwisespecified.Specifictechniquesmaybespecifiedinthe
determination of the sensitivity of detail visible on the neutron
contractual agreement.
6.3 Reporting Criteria/Acceptance Criteria—Reporting cri-
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde-
teria for the examination results shall be in accordance with
structive Testing and is the direct responsibility of Subcommittee E07.05 on
Radiology (Neutron) Method.
Sections 9 and 10, unless otherwise specified. Acceptance
Current edition approved Dec. 1, 2022. Published December 2022. Originally
criteria, for example, reference radiographs, shall be specified
approved in 1999. Last previous edition approved in 2021 as E2023 – 21. DOI:
in the contractual agreement.
10.1520/E2023-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.4 Re-examination of repaired/reworked items is not ad-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
dressedinthispracticeand,ifrequired,shallbespecifiedinthe
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. contractual document.
Copyright
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2023 − 21 E2023 − 22
Standard Practice for
1
Fabrication of Neutron Radiographic Sensitivity Indicators
This standard is issued under the fixed designation E2023; 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
1.1 This practice covers the fabrication of Sensitivity Indicators (SI), which can be used to determine the relative quality of film
radiographic images produced by direct, thermal neutron radiographic examination.
1.2 Units—The values stated in inch-pound units are to be regarded as 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E543 Specification for Agencies Performing Nondestructive Testing
E545 Test Method for Determining Image Quality in Direct Thermal Neutron Radiographic Examination
E748 Guide for Thermal Neutron Radiography of Materials
E1316 Terminology for Nondestructive Examinations
3. Terminology
3.1 Definitions—For definitions of terms used in this practice, see Terminology E1316, Section H.
4. Summary of Practice
4.1 The Sensitivity Indicator (SI) is used for qualitative determination of the sensitivity of detail visible on the neutron radiograph.
It consists of a step wedge containing gaps and holes of known dimensions. Visual inspection of the image of this device provides
subjective information regarding total radiographic sensitivity with respect to the step-block material.
4.2 Neutron radiography practices are discussed in Guide E748. The neutron radiograph used to determine image quality using
the SI shall meet the requirements of Test Method E545.
1
This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.05 on Radiology
(Neutron) Method.
Current edition approved Nov. 1, 2021Dec. 1, 2022. Published November 2021December 2022. Originally approved in 1999. Last previous edition approved in 20192021
as E2023 – 19.E2023 – 21. DOI: 10.1520/E2023-21.10.1520/E2023-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2023 − 22
5. Significance and Use
5.1 The only truly valid image quality indicator is a material or component, equivalent to the part being neutron radiographed, with
a known standard discontinuity, inclusion, omission, or flaw (reference standard comparison part). The SI is designed to substitute
for the reference standard, providing qualitative information on hole and gap sensitivity in a single unit. Fabrication in accordance
with this practice is vital for accurate and consistent measurements.
5.2 This practice shall be followed for the fabrication of all SIs to be used with Test Method E545 to determine image quality in
direct thermal neutron radiography. Devices constructed to previous versions of this practice, or Test Method E545 for devices built
between 1981 and 1991, can also be used.
6. Basis of Application
6.1 Qualification of Nondestructive Agencies—If specified in the contractual agreement, NDT agencies shall be qualified and
evaluated as described in Specification E543. The applicable edition of Specification E543 shall be specified in the contractual
agreement.
6.2 Procedures and Techniques—The procedures and techniques to be utilized shall be as described in this practice unless
otherwise specified. Specific techniques may be specified in the contractual agreement.
6.3 Reporting Criteria/Accepta
...

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