1、Designation:E1742/E1742M12Standard Practice forRadiographic Examination1This standard is issued under the fixed designation E1742/E1742M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parenthese
2、s indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This practice2establishes the minimum requirements forradiographic exami
3、nation for metallic and nonmetallic materi-als.1.2 ApplicabilityThe criteria for the radiographic exami-nation in this practice are applicable to all types of metallic andnonmetallic materials.The requirements expressed in thispractice are intended to control the quality of the radiographicimages an
4、d are not intended to establish acceptance criteria forparts and materials.1.3 Basis of ApplicationThere are areas in this practicethat may require agreement between the cognizant engineeringorganization and the supplier,or specific direction from thecognizant engineering organization.These items sh
5、ould beaddressed in the purchase order or the contract.1.3.1 DoD contracts.1.3.2 Personnel qualification,5.1.1.1.3.3 Agency qualification,5.1.2.1.3.4 Digitizing techniques,5.4.5.1.3.5 Alternate image quality indicator(IQI)types,5.5.3.1.3.6 Examination sequence,6.6.1.3.7 Non-film techniques,6.7.1.3.8
6、 Radiographic quality levels,6.9.1.3.9 Film density,6.10.1.3.10 IQI qualification exposure,6.13.3.1.3.11 Non-requirement for IQI,6.18.1.3.12 Examination coverage for welds,A2.2.2.1.3.13 Electron beam welds,A2.3.1.3.14 Geometric unsharpness,6.23.1.3.15 Responsibility for examination,6.27.1.1.3.16 Exa
7、mination report,6.27.2.1.3.17 Retention of radiographs,6.27.8.1.3.18 Storage of radiographs,6.27.9.1.3.19 Reproduction of radiographs,6.27.10 and 6.27.10.1.1.3.20 Acceptable parts,6.28.1.1.4 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Theva
8、lues 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 non-conformance with the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with
9、its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 The following documents form a part of this practice tothe extent specified herein:2.2
10、ASTM Standards:3E94 Guide for Radiographic ExaminationE543 Specification for Agencies Performing NondestructiveTestingE747 Practice for Design,Manufacture and Material Group-ing Classification of Wire Image Quality Indicators(IQI)Used for RadiologyE801 Practice for Controlling Quality of Radiologica
11、l Ex-amination of Electronic DevicesE999 Guide for Controlling the Quality of Industrial Radio-graphic Film ProcessingE1025 Practice for Design,Manufacture,and MaterialGrouping Classification of Hole-Type Image Quality In-dicators(IQI)Used for RadiologyE1030 Test Method for Radiographic Examination
12、of Me-tallic CastingsE1032 Test Method for Radiographic Examination of Weld-mentsE1079 Practice for Calibration of Transmission Densitom-eters1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.01 onRadiology(
13、X and Gamma)Method.Current edition approved Nov.1,2012.Published November 2012.Originallyapproved in 1995.Last previous edition approved in 2011 as E1742-11.DOI:10.1520/E1742_E1742M-12.2This practice replaced MIL-STD-453.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AS
14、TM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken
15、,PA 19428-2959.United States1 E1165 Test Method for Measurement of Focal Spots ofIndustrial X-Ray Tubes by Pinhole ImagingE1254 Guide for Storage of Radiographs and UnexposedIndustrial Radiographic FilmsE1255 Practice for RadioscopyE1316 Terminology for Nondestructive ExaminationsE1390 Specification
16、 for Illuminators Used for Viewing In-dustrial RadiographsE1411 Practice for Qualification of Radioscopic SystemsE1416 Test Method for Radioscopic Examination of Weld-mentsE1815 Test Method for Classification of Film Systems forIndustrial RadiographyE2033 Practice for Computed Radiology(PhotostimulableLuminescence Method)E2698 Practice for Radiological Examination Using DigitalDetector Arrays2.3 AWS Document:AWS A2.4 Standard Symbols for Welding,Brazing,andNondestructive Examination42.4 Aerospac
