Standard Practice for Qualification of Radioscopic Systems

SCOPE
1.1 This practice provides test and measurement details for measuring the performance of X-ray and Gamma ray radioscopic systems. Radioscopic examination applications are diverse. Therefore, system configurations are also diverse and constantly changing as the technology advances.
1.2 This practice is intended as a means of initially qualifying and requalifying a radioscopic system for a specified application by determining its performance level when operated in a static mode. System architecture including the means of radioscopic examination record archiving and the method for making the accept/reject decision are also unique system features and their effect upon system performance must be evaluated.
1.3 The general principles, as stated in this practice, apply broadly to transmitted-beam penetrating radiation radioscopy systems. Other radioscopic systems, such as those employing neutrons and Compton back-scattered X-ray imaging techniques, are not covered as they may involve equipment and application details unique to such systems.
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 and health practices and determine the applicability of regulatory limitations prior to use. For information on safety requirements, refer to the applicable documents listed in Section 2.

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Historical
Publication Date
09-Jul-2001
Current Stage
Ref Project

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Effective Date
10-Jul-2001

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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: E 1411 – 95 An American National Standard
Standard Practice for
Qualification of Radioscopic Systems
This standard is issued under the fixed designation E 1411; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 1647 Practice for Determining Contrast Sensitivity in
Radioscopy
1.1 This practice provides test and measurement details for
2.2 Other Standard:
measuring the performance of X-ray and Gamma ray radio-
British Standard 3971—1980 Specification for Image Qual-
scopic systems. Radioscopic examination applications are
ity Indicators for Industrial Radiography (including guid-
diverse. Therefore, system configurations are also diverse and
ance on their use)
constantly changing as the technology advances.
1.2 This practice is intended as a means of initially quali-
3. Terminology
fying and requalifying a radioscopic system for a specified
3.1 Definitions—For definitions of terms used in this prac-
application by determining its performance level when oper-
tice, see Terminology E 1316.
ated in a static mode. System architecture including the means
of radioscopic examination record archiving and the method
4. Summary of Practice
for making the accept/reject decision are also unique system
4.1 This practice provides a standardized procedure for the
features and their effect upon system performance must be
initial qualification and requalification of a radioscopic system
evaluated.
to establish radioscopic examination capabilities for a specified
1.3 The general principles, as stated in this practice, apply
range of applications.
broadly to transmitted-beam penetrating radiation radioscopy
4.2 This practice is intended for use in association with a
systems. Other radioscopic systems, such as those employing
standard practice governing the use of radioscopic examina-
neutrons and Compton back-scattered X-ray imaging tech-
tion, such as Practice E 1255.
niques, are not covered as they may involve equipment and
4.3 This practice specifies the procedures to be used in
application details unique to such systems.
determining the performance level of the radioscopic system.
1.4 This standard does not purport to address all of the
Unique system features, including component selection, sys-
safety concerns, if any, associated with its use. It is the
tem architecture, programmability and image archiving capa-
responsibility of the user of this standard to establish appro-
bilities are important factors and are taken into account in this
priate safety and health practices and determine the applica-
practice. The overall system performance level, as well as key
bility of regulatory limitations prior to use. For information on
system features, are to be recorded in a qualification document
safety requirements, refer to the applicable documents listed in
which shall qualify the performance level of the total radio-
Section 2.
scopic system. An example of the Radioscopic System Quali-
2. Referenced Documents fication document form is included in the Appendix. This
document may be tailored to suit the specific application.
2.1 ASTM Standards:
E 747 Practice for Design, Manufacture and Material
5. Significance and Use
Grouping Classification of Wire Image Quality Indicators
2 5.1 As with conventional radiography, radioscopic exami-
(IQI) Used for Radiology
nation is broadly applicable to the many materials and test
E 1025 Practice for Design, Manufacture, and Material
object configurations which may be penetrated with X-rays or
Grouping Classification of Hole-Type Image Quality Indi-
gamma rays. The high degree of variation in architecture and
cators (IQI) Used for Radiology
2 performance among radioscopic systems due to component
E 1255 Practice for Radioscopy
selection, physical arrangement and test object variables,
E 1316 Terminology for Nondestructive Examinations
makes it necessary to establish the level of performance which
the selected radioscopic system is capable of achieving in
specific applications. The manufacturer of the radioscopic
system, as well as the user, require a common basis for
This practice is under the jurisdiction of ASTM Committee E-7 on Nonde-
structive Testing and is the direct responsibility of Subcommittee E07.01 on
determining the performance level of the radioscopic system.
Radiology (X and Gamma) Method.
Current edition approved Dec. 10, 1995. Published February 1996. Originally
published as E 1411 – 91. Last previous edition E 1411 – 91. Available from British Standards Institute, 2 Park Street, London, England
Annual Book of ASTM Standards, Vol 03.03. W1A2B5.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
E 1411
5.2 This practice does not purport to provide a method to linear and area dimensions per unit time, and
measure the performance of individual radioscopic system 6.1.8 The standardized image quality indicator to be used in
components which are manufactured according to a variety of qualifying the radioscopic system.
industry standards. This practice covers measurement of the 6.2 The following minimum equipment information shall be
combined performance of the radioscopic system elements included in the qualification document:
when operated together as a functional radioscopic system. 6.2.1 The system make, model number, serial number, date
5.3 This practice addresses the performance of radioscopic of manufacture and configuration,
systems in the static mode only. Radioscopy can also be a 6.2.2 Radioscopic scan plan details and whether manual or
dynamic, real-time or near real-time examination technique programmable,
which can allow test-part motion as well as parameter changes 6.2.3 Accept/Reject decision as to whether manual,
during the radioscopic examination process. The use of this computer-aided or fully automated, and
practice is not intended to be limiting concerning the use of the 6.2.4 Pertinent equipment details for each radioscopic sys-
dynamic properties of radioscopy. Users of radioscopy are tem sub-system.
cautioned that the dynamic aspects of radioscopy can have 6.3 This practice neither approves nor disapproves the use
beneficial as well as detrimental effects upon system perfor- of the qualified radioscopic system for the specified applica-
mance and must be evaluated on a case-by-case basis. tion. It is intended only as a standardized means of evaluating
5.4 This qualification procedure is intended to benchmark system performance.
radioscopic system performance under selected operating con-
7. Qualification Procedure
ditions to provide a measure of system performance. Qualifi-
7.1 Before testing, the radioscopic system shall be deter-
cation shall not restrict operation of the radioscopic system at
mined to be in good operating condition. Each sub-system shall
other radioscopic examination parameter settings which may
be checked to ascertain that it performs according to the
provide improved performance on actual test objects.
manufacturer’s specifications.
5.5 Radioscopic system performance measured pursuant to
7.2 The radioscopic system and each component thereof
this practice does not guarantee the level of performance which
shall be operated within its ratings at all times during qualifi-
may be realized in actual operation. The effects of test
cation.
part-geometry and test part-generated scattered radiation can-
7.3 The radioscopic system shall be determined to be in
not be reliably predicted by a standardized test. All radioscopic
compliance with applicable local, state and federal radiation
systems age and degrade in performance as a function of time.
safety standards. Proper procedures must be taken to safeguard
Maintenance and operator adjustments, if not correctly made,
personnel during the performance of these tests.
can adversely affect the performance of radioscopic systems.
7.4 The image display shall be placed in an area of subdued,
5.6 The performance of the radioscopic system operator in
controllable lighting which is free from glare and reflections
manual and semi-automatic radioscopic systems is not taken
which might affect image assessment.
into account in this practice and can have a major effect upon
7.5 The radioscopic system shall be at operating tempera-
radioscopic system performance. Operator qualifications are an
ture and stabilized. All operator accessible operating controls
important aspect of system operation and should be covered in
may be adjusted as necessary to obtain the optimal image
a separate written procedure.
quality.
6. Application and Equipment Information Statement
7.6 Maintenance adjustments shall not be made during the
6.1 The following minimum application and qualification testing process. If maintenance tests are necessary, all affected
standard information shall be reported in the qualification tests shall be repeated.
document. 7.7 Where provided, beam collimators and diaphragms shall
6.1.1 A brief statement about the intended application, be used to minimize scatter radiation thereby promoting the
6.1.2 Material(s) and thickness range(s) for which the sys- highest quality radioscopic image.
tem is to be qualified, 7.8 Radioscopic system performance shall be evaluated as
6.1.3 Maximum test part size or radioscopic examination to resolution and contrast sensitivity for the applicable material
envelope, over the range of minimum and maximum section thicknesses
6.1.4 A brief statement about the kind of test part features for which the radioscopic syste
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