1、Designation:E181708(Reapproved 2014)Standard Practice forControlling Quality of Radiological Examination by UsingRepresentative Quality Indicators(RQIs)1This standard is issued under the fixed designation E1817;the number immediately following the designation indicates the year oforiginal adoption o
2、r,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the radiological examination ofunique materials or processes,or
3、both,for which convention-ally designed image quality indicators(IQIs),such as thosedescribed in Practices E747 and E1025,may be inadequate incontrolling the quality and repeatability of the radiologicalimage.1.2 Where appropriate,representative image quality indica-tors(RQIs)may also represent crit
4、eria levels of the acceptanceor rejection of images of discontinuities.1.3 This practice is applicable to most radiological methodsof examination.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standar
5、d to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E543 Specification for Agencies Performing NondestructiveTestingE747 Practice for Design,Manufacture and Material Group-ing Classi
6、fication of Wire Image Quality Indicators(IQI)Used for RadiologyE1000 Guide for RadioscopyE1025 Practice for Design,Manufacture,and MaterialGrouping Classification of Hole-Type Image Quality In-dicators(IQI)Used for RadiologyE1316 Terminology for Nondestructive ExaminationsE1441 Guide for Computed T
7、omography(CT)Imaging2.2 ASNT Standards:3SNT-TC-1A Recommended Practice for Personnel Qualifi-cation in Nondestructive TestingANSI/ASNT CP-189 Standard for Qualification and Certifi-cation of Nondestructive Testing Personnel2.3 Aerospace Industries Association Document:NAS 410 Certification and Quali
8、fication of NondestructiveTesting Personnel43.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,refer to Terminology E1316.3.2 Definitions of Terms Specific to This Standard:3.2.1 representative quality indicator(RQI)a real part,ora fabrication of similar geometry in radiologic
9、ally similarmaterial to a real part,that has features of known characteris-tics that represent those features of interest for which the partsto be purchased are being examined.4.Summary of Practice4.1 The information from an RQI image may be used tocontrol all of the parameters necessary for product
10、ion exami-nation images(which look essentially like the RQI images)andis particularly effective in the practice of radioscopic andtomographic techniques.Refer to Guides E1000 and E1441,respectively.4.2 The designer may also use the RQI,when in compliancewith the requirements set out in this practice
11、,to set accept orreject criteria,as applicable,to that part design.5.Significance and Use5.1 The use of RQIs is a significant departure from normalpractice in industrial radiology because it is not a standarddesign and is dependent on the application,material,andprocess and therefore cannot be a sim
12、ple plaque or wire.Theuse of an RQI provides documented evidence that radiologicimages have the level of quality necessary to reveal those1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testingand is the direct responsibility of Subcommittee E07.01 onRadiology(X and
13、 Gamma)Method.Current edition approved June 1,2014.Published July 2014.Originally approvedin 1996.Last previous edition approved in 2008 as E1817-08.DOI:10.1520/E1817-08R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annua
14、l Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.4Available from Aerospace Industries Association of Am
15、erica,Inc.(AIA),1000Wilson Blvd.,Suite 1700,Arlington,VA22209-3928,http:/www.aia-aerospace.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 nonconformances for which the parts are being examined byensuring adequate spatial resolution a
16、nd contrast sensitivity inthe areas of interest.5.2 Where conventional IQIs conforming to Practice E747or E1025 can be used effectively,those practices should befollowed.6.Basis of Application6.1 The following items shall be agreed upon between thepurchaser and the supplier and specified in the contract or joborder:6.1.1 Nondestructive testing(NDT)personnel shall bequalified in accordance with a nationally or internationallyrecognized NDT personnel qualification practice or standardsuch as ANSI/
