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ASTM E2023-99(2004)

(Practice)

Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators

Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators

SIGNIFICANCE AND USE
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.
This practice shall be followed for the fabrication of all SIs to be used with Method E 545 to determine image quality in direct thermal neutron radiography.
SCOPE
1.1 This practice covers the fabrication of Sensitivity Indicators (SI), which can be used to determine the relative quality of radiographic images produced by direct, thermal neutron radiographic examination.
1.2 The values stated in inch-pound units are regarded as the standard. The SI equivalents given in parentheses in the text are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2004
ICS
37.040.25 - Radiographic films
Technical Committee
E07 - Nondestructive Testing
Drafting Committee
E07.05 - Radiology (Neutron) Method
Current Stage
Ref Project

Relations

Replaces
ASTM E2023-99 - Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators
Effective Date
01-May-2004
Replaced By
ASTM E2023-10 - Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators
Effective Date
01-Jan-2010
Referred By
ASTM E545-19 - Standard Test Method for Determining Image Quality in Direct Thermal Neutron Radiographic Examination
Effective Date
01-May-2004

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ASTM E2023-99(2004) - Standard Practice for Fabrication of Neutron Radiographic Sensitivity IndicatorsASTM E2023-99(2004) - Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators
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ASTM E2023-99(2004) - Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:E2023–99 (Reapproved 2004)
Standard Practice for
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 holes of known dimensions. Visual inspection of the image of
this device provides subjective information regarding total
1.1 This practice covers the fabrication of Sensitivity Indi-
radiographic sensitivity with respect to the step-block material,
cators (SI), which can be used to determine the relative quality
aswellasoptionalsubjectivedata,regardingdetrimentallevels
of radiographic images produced by direct, thermal neutron
of gamma exposure.
radiographic examination.
4.2 NeutronradiographypracticesarediscussedinPractices
1.2 The values stated in inch-pound units are regarded to be
E748. The neutron radiograph used to determine image quality
standard. The SI equivalents given in brackets in the text are
using the SI shall meet the requirements of Method E545.
for information only.
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 radio-
priate safety and health practices and determine the applica-
graphed, with a known standard discontinuity, inclusion, omis-
bility of regulatory limitations prior to use.
sion or flaw (reference standard comparison part). The SI is
2. Referenced Documents designed to substitute for the reference standard, providing
qualitative information on hole and gap sensitivity in a single
2.1 ASTM Standards:
unit. Fabrication in accordance with this practice is vital for
E543 Specification for Agencies Performing Nondestruc-
accurate and consistent measurements.
tive Testing
5.2 This practice shall be followed for the fabrication of all
E545 Test Method for Determining Image Quality in Direct
SIstobeusedwithMethodE545todetermineimagequalityin
Thermal Neutron Radiographic Examination
direct thermal neutron radiography.
E748 Practices for Thermal Neutron Radiography of Mate-
rials
6. Basis of Application
E1316 Terminology for Nondestructive Examinations
6.1 Qualification of Nondestructive Agencies—If specified
3. Terminology in the contractual agreement, NDT agencies shall be qualified
and evaluated as described in Practice E543. The applicable
3.1 Definitions—For definitions of terms used in this prac-
edition of Practice E543 shall be specified in the contractual
tice, see Terminology E1316, Section H.
agreement.
4. Summary of Practice 6.2 Procedures and Techniques—The procedures and tech-
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.
radiograph. It consists of a step wedge containing gaps and
6.3 Reporting Criteria/Acceptance Criteria—Reporting cri-
teria for the examination results shall be in accordance with
This practice is under the jurisdiction of ASTM Committee E07 on Nonde-
Sections 9 and 10 unless otherwise specified. Acceptance
structive Testing and is the direct responsibility of Subcommittee E07.05 on
criteria, for example, reference radiographs, shall be specified
Radiology (Neutron) Method.
in the contractual agreement.
Current edition approved May 1, 2004. Published June 2004. Originally
approved in 1999. Last previous edition approved in 1999 as E2023 - 99. DOI:
6.4 Reexamination of repaired/reworked items is not ad-
10.1520/E2023-99R04.
dressedinthispracticeand,ifrequired,shallbespecifiedinthe
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contractual document.
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.
E2023–99 (2004)
Material — Methylmethacrylate
Shim Thickness Hole Diameter
A 0.005 0.005
B 0.010 0.010
C 0.020 0.020
D 0.010 0.010
NOTE 1—All dimensions are in inches.
NOTE 2—The lead step may be replaced with a methylmethacrylate strip with the D shim eliminated.
FIG. 1 Sensitivity Indicator
7. Sensitivity Indicator (SI) 8.1.1 Mill a Channel, 0.850-in. (21.6-mm) wide by 6.5-in.
[165-mm]longfromanaluminumblock,1-in.[25.4-mm]wide
7.1 The Sensitivity Indicator (SI) shall be constructed of
by at least 0.303-in. [7.70-mm] high by 6.5-in. [165-mm] long.
castacrylicresin,lead(optional),andaluminum.Theconstruc-
The channel should begin 0.075-in. [1.90-mm] from edge A
tion and dimensions are shown in Fig. 1.
and leave 0.103-in. [2.62-cm] aluminum in the bottom of the
7.2 The optional lead step in the SI may be replaced with a
channel (see Fig. 2).
blank, cast acrylic resin step. The lead provides a visual
indication of beam gamma content; however, the lead image is 8.1.2 Mill the A Channel (see Fig. 1), within this channel,
0.125-in. [3.18-mm] wide by 0.005-in. [0.127-mm] deep by
not used for any of the SI calculations of Method E545.
7.3 The acrylic resin shall be methylmethacrylate. 6.5-in. [165-mm] long. The near edge of channel A should be
0.450-in. [11.4-mm] from edge A (see Fig. 3).
7.4 All dimensional tolerances are as noted on the figures.
7.5 Aluminum shims and strips shall be 99.9 % pure el-
8.1.3 Mill the B Channel, adjacent to the A channel,
emental material.
0.125-in. [3.18-mm] wide by 0.010-in. [0.254-mm] deep by
7.6 The SI may be encased in a 6061 aluminum dust cover,
6.5-in. [165-mm] long. The near edge of channel B should be
0.012-in. [0.305-mm] thick.
0.325-in. [8.26-mm] from edge A (see Fig. 3).
7.7 When used, the optional lead shim shall be at least
8.1.4 Mill the C Channel, adjacent to the B channel,
99.9 % pure elemental material.
0.125-in. [3.18-mm] wide by 0.020-in. [0.508-mm] deep by
6.5-in. [165-mm] long. The near edge of channel C should be
8. Fabrication
0.200 in. [5.08 mm] from edge A (see Fig. 3).
8.1 Components:
8.1.5 Optional—Mill the D channel adjacent to the C
channel, 0.125-in. [3.18-mm] wide by 0.010-in. [0.254-mm]
deep by 6.5-in. [165-mm] long. The near edge of channel D
The instructions in Section 8 assume the simultaneous fabrication of five units
for practical reasons. Units may be fabricated singly, if desired. should be 0.075-in. [1.90-mm] from edge A.
E2023–99 (2004)
NOTE 1—Unless otherwise specified, use the following:
Dimensions are in inches.
Tolerances on machined dimensions: .XX = 6 .01 .XXX = 6 .002.
FIG. 2 Main Channel in Aluminum Block
NOTE 1—Unless otherwise specified, use the following:
Dimensions are in inches.
Tolerances on machined dimensions: .XX = 6 .01 .XXX = 6 .002.
FIG. 3 Channels A Through D in Main Channel
E2023–99 (2004)
NOTE 1—The D channel is not required and shall not be milled if the
To verify that the various shims have the proper holes drilled
lead shim is not to be used.
into them, a certified hole measurement report is required.
8.1.6 Prepare five methylmethacrylate strips, 0.060-in. 8.1.11 To keep the SI intact during use, it is highly recom-
mended that a dust cover be kept on the unit. One dust cover
[1.52-mm] thick by at least 0.200-in. [5.08-mm] wide by
6.5-in. [165-mm] long. These strips will be used in 8.2.11. for each SI may be prepared from aluminum shim stock,
2 2
0.012-in. [0.305-mm] thick by 1.50-in. [38.1-mm ] by cutting
8.1.7 Prepare four methylmethacrylate strips, 0.125-in.
2 2
[3.18-mm] thick by at least 0.200-in. [5.08-mm] wide by out a 0.250-in. [6.35-mm ] from each corner and folding the
2 2
aluminum to form a cover, 1-in. [25.4-mm ] by 0.250-in.
6.5-in. [165-mm] long. One of the methylmethacrylate strips
may be replaced with an optional lead strip of the same [6.35-mm] high (see Fig. 1).
dimensions. These strips will be used in 8.2.5. 8.2 Assembly:
8.1.8 Prepare one each strip from aluminum shim stock, at
8.2.1 Insert Shim C into the C channel milled in 8.1.4 (see
least 0.200-in. [5.08-mm] wide by 6.5-in. [165-mm] long, with
Fig. 5).
the following thicknes
...

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4.2 Radiochromic film dosimetry systems are commonly used in industrial radiation processing, for example in the sterilization of medical devices and the irradiation of foods.
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1.1 This is a practice for using radiochromic film dosimetry systems to measure absorbed dose in materials irradiated by photons or electrons in terms of absorbed dose to water. Radiochromic film dosimetry systems are generally used as routine dosimetry systems.  
1.2 The radiochromic film dosimeter is classified as a type II dosimeter on the basis of the complex effect of influence quantities (see ISO/ASTM 52628).  
1.3 This document is one of a set of standards that provides recommendations for properly implementing dosimetry in radiation processing, and describes a means of achieving compliance with the requirements of ISO/ASTM 52628 “Practice for Dosimetry in Radiation Processing” for a radiochromic film dosimetry system. It is intended to be read in conjunction with ISO/ASTM 52628.  
1.4 This practice covers the use of radiochromic film dosimetry systems under the following conditions:  
1.4.1 The absorbed dose range is 1 Gy to 150 kGy.  
1.4.2 The absorbed dose rate is 1 × 10-2 to 1 × 1013 Gy·s-1 (1-4).2  
1.4.3 The photon energy range is 0.1 to 50 MeV.  
1.4.4 The electron energy range is 70 keV to 50 MeV.  
1.5 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.  
1.6 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.

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ASTM
ASTM E2003-20(Practice)
Standard Practice for Fabrication of the Neutron Radiographic Beam Purity Indicators

SIGNIFICANCE AND USE
5.1 The BPI is designed to yield quantitative information concerning neutron beam and image system parameters that contribute to film exposure and, thereby, affect overall image quality. For proper measurements of film exposure due to the neutron beam constituents, the BPI must be fabricated in accordance with this practice.  
5.2 This practice shall be followed for the fabrication of all Beam Purity Indicators to be used with Test Method E545 to determine image quality in direct thermal neutron radiography.
SCOPE
1.1 This practice covers the material and fabrication of a Beam Purity Indicator (BPI), which can be used to determine the relative quality of radiographic images produced by direct, thermal neutron radiographic examination.  
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.

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ASTM
ASTM D6152/D6152M-12(2024)(Specification)
Standard Specification for SEBS-Modified Mopping Asphalt Used in Roofing

ABSTRACT
This specification covers SEBS (styrene-ethylenebutylene-styrene)-modified mopping asphalt intended for use in built-up roof construction, construction of some modified bitumen systems, construction of bituminous vapor retarder systems, and for adhering insulation boards used in various types of roofing systems. This specification is intended as a material specification and issues regarding the suitability of specific roof constructions or application techniques are beyond its scope. The specified tests and property values are intended to establish minimum properties. In place system design criteria or performance attributes are factors beyond the scope of this specification. The base asphalt shall be prepared from crude petroleum and the SEBS-modified asphalt shall incorporate sufficient SEBS as the primary polymeric modifier. The SEBS modified asphalt shall be homogeneous and free of water and shall conform to the prescribed physical properties including (1) softening point before and after heat exposure, (2) softening point change, (3) flash point, (4) penetration before and after heat exposure, (5) penetration change, (6) solubility in trichloroethylene, (7) tensile elongation, (8) elastic recovery, and (9) low temperature flexibility. The sampling and test methods to determine compliance with the specified physical properties, as well as the evaluation for stability during heat exposure are detailed.
SCOPE
1.1 This specification covers SEBS (styrene-ethylene-butylene-styrene)-modified asphalt intended for use in built-up roof construction, construction of some modified bitumen systems, construction of bituminous vapor retarder systems, and for adhering insulation boards used in various types of roof systems.  
1.2 This specification is intended as a material specification. Issues regarding the suitability of specific roof constructions or application techniques are beyond its scope.  
1.3 The specified tests and property values used to characterize SEBS-modified asphalt are intended to establish minimum properties. In-place system design criteria or performance attributes are factors beyond the scope of this specification.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.5 This standard does not purport to address 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.  
1.6 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.

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