ASTM E748-02

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E748–02
Standard Practices for
1
Thermal Neutron Radiography of Materials
This standard is issued under the fixed designation E748; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope U.S. Department of Energy, the National Institute of Standards
and Technology, and to applicable state and local codes.
1.1 Purpose—Practicestobeemployedfortheradiographic
1.5 Other Aspects of the Neutron Radiographic Process—
examination of materials and components with thermal neu-
For many important aspects of neutron radiography such as
trons are outlined herein. They are intended as a guide for the
technique, files, viewing of radiographs, storage of radio-
production of neutron radiographs that possess consistent
graphs, film processing, and record keeping, refer to Guide
qualitycharacteristics,aswellasaidingtheusertoconsiderthe
E94. (See Section 2.)
applicability of thermal neutron radiology (radiology, radio-
1.6 The values stated in either SI or inch-pound units are to
graphic,andrelatedtermsaredefinedinTerminologyE1316).
be regarded as the standard.
Statements concerning preferred practice are provided without
1.7 This standard does not purport to address all of the
a discussion of the technical background for the preference.
safety concerns, if any, associated with its use. It is the
The necessary technical background can be found in Refs
2 responsibility of the user of this standard to establish appro-
(1-16).
priate safety and health practices and determine the applica-
1.2 Limitations—Acceptance standards have not been es-
bility of regulatory limitations prior to use. (For more specific
tablished for any material or production process (see Section 5
safety information see 1.4.)
on Basis of Application). Adherence to the practices will,
however, produce reproducible results that could serve as
2. Referenced Documents
standards. Neutron radiography, whether performed by means
2.1 ASTM Standards:
ofareactor,anaccelerator,subcriticalassembly,orradioactive
3
E94 Guide for Radiographic Examination
source, will be consistent in sensitivity and resolution only if
E543 Practice for Agencies Performing Nondestructive
the consistency of all details of the technique, such as neutron
3
Testing
source, collimation, geometry, film, etc., is maintained through
E545 TestMethodforDeterminingImageQualityinDirect
the practices. These practices are limited to the use of photo-
3
Thermal Neutron Radiographic Examination
graphic or radiographic film in combination with conversion
E803 Test Method for Determining the L/D Ratio of
screens for image recording; other imaging systems are avail-
3
Neutron Radiography Beams
able. Emphasis is placed on the use of nuclear reactor neutron
3
E1316 Terminology for Nondestructive Examinations
sources.
E1496 TestMethodforNeutronRadiographicDimensional
1.3 Interpretation and Acceptance Standards—
3
Measurements
Interpretation and acceptance standards are not covered by
2.2 ASNT Standard:
these practices. Designation of accept-reject standards is rec-
Recommended Practice SNT-TC-1A for Personnel Qualifi-
ognized to be within the cognizance of product specifications.
4
cation and Certification
1.4 Safety Practices—General practices for personnel pro-
2.3 ANSI Standard:
tection against neutron and associated radiation peculiar to the
ANSI/ASNT-CP-189 Standard for Qualification and Certi-
neutron radiologic process are discussed in Section 17. For
5
fication of Nondestructive Testing Personnel
further information on this important aspect of neutron radiol-
2.4 AIA Document:
ogy, refer to current documents of the National Committee on
NAS-410 Nondestructive Testing Personnel Qualification
Radiation Protection and Measurement, the Code of Federal
6
and Certification
Regulations, the U.S. Nuclear Regulatory Commission, the
1 3
These practices are under the jurisdiction of ASTM Committee E07 on Annual Book of ASTM Standards, Vol 03.03.
4
NondestructiveTestingandarethedirectresponsibilityofSubcommitteeE07.05on Available from the American Society for Nondestructive Testing, 1711 Arlin-
Radiology (Neutron) Method. gate Lane, P.O. Box 28518, Columbus, OH 43228-0518.
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Current edition approved July 10, 2002. Published September 2002. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
published as E748–80. Last previous edition E748–95. 4th Floor, New York, NY 10036.
2 6
Theboldfacenumbersinparenthesesrefertothelistofreferencesattheendof Available from Aerospace Industries Association of America, Inc., 1250 Eye
these practices. St., NW, Washington, DC 20005.
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