ASTM_E_1002_-_11.pdf

Designation:E100211Standard Practice forLeaks Using Ultrasonics1This standard is issued under the fixed designation E1002;the number immediately following the designation indicates the year oforiginal adoption or,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 Practice A,PressurizationThis practice covers proce-dures for calibration of ultrasonic instruments,location,andestimated measurements of gas leakage to atmosphere by theairborne ultrasonic technique.21.2 In general practice this should be limited to leaksdetected by two classifications of instruments,Class I andClass II.Class I instruments should have a minimum detectableleak rate of 6.7 107mol/s(1.5 102std.cm3/s at 0C)ormore for the pressure method of gas leakage to atmosphere.Class II instruments should have a minimal detectable leak rateof 6.7 106mol/s(1.5 101std.cm3/s at 0C)or more forthe pressure method of gas leakage to atmosphere.Refer toGuide E432 for additional information.1.3 Practice B,Ultrasonic TransmitterFor object undertest not capable of being pressurized but capable of havingultrasonic tone placed/injected into the test area to act as anultrasonic leak trace source.1.3.1 This practice is limited to leaks producing leakage of6.7 106mol/s(1.5 101std.cm3/s at 0C)or greater.1.4 The values stated in SI units are to be regarded as thestandard.1.5 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 standard to consult andestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3E432 Guide for Selection of a Leak Testing MethodE543 Specification for Agencies Performing NondestructiveTestingE1316 Terminology for Nondestructive Examinations2.2 Other Documents:SNT-TC-1A Recommended Practice for Personnel Qualifi-cation and Certification in Nondestructive Testing4ANSI/ASNT CP-189 ASNT Standard for Qualification andCertification of Nondestructive Testing Personnel4NAS-410 Certification and Qualification of NondestructivePersonnel53.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,see Terminology E1316,Section E.4.Summary of Practice4.1 Practice AThis practice sets minimum requirementsfor an ultrasonic detector(Classifications I and II).It providesfor sensitivity validation of the detector and gives proceduresfor pressurizing the test object,locating leaks,and estimatingthe leakage rates.4.2 Practice BThis practice sets minimum requirementsfor an ultrasonic detector used in conjunction with an ultra-sonic transmitter.It gives procedures for locating leaks usingan electronically generated ultrasonic leak tracer source.5.Basis of Application5.1 The following items are subject to contractual agree-ment between parties using or referencing this practice.5.2 Personnel Qualification5.2.1 If specified in the contractual agreement,personnelperforming examinations to this practice shall be qualified inaccordance with a national or internationally recognized NDTpersonnel qualification practice or standard such as ANSI/ASNT-CP-189,SNT-TC-1A,NAS-410,or a similar documentand certified by the employer or certifying agency,as appli-cable.The practice or standard used and its applicable revisionshall be identified in the contractual agreement between theusing parties.1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.08 on LeakTesting Method.Current edition approved July 1,2011.Published July 2011.Originally approvedin 1986.Last previous edition approved in 2005 as E1002-05.DOI:10.1520/E1002-11.2This technique is sometimes called“ultrasonic translation.”3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.5Available from Aerospace Industries Association of America,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 5.3 Qualification of Nondestructive AgenciesIf specifiedin the contractual agreement,NDT agencies shall be qualifiedand evaluated as described in Practice E543.The applicablerevision of Practice E543 shall be in the contractual agreement.6.Significance and Use6.1 Practice AThis practice is useful for locating andestimating the size of pressurized gas leaks,either as a qualitycontrol test or as a field inspection procedure.It i