1、Designation:E1066/E1066M19Standard Practice forAmmonia Colorimetric Leak Testing1This standard is issued under the fixed designation E1066/E1066M;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 p
2、arentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the testing of large single-anddouble-walled tanks,pressure and vacuum vessels,laminated,lined-or double-walled parts,complex pi
3、ping systems,flexiblecontainers(such as aircraft fuel tanks),glass-to-metal seals inhybrid packages,and systems that inherently contain or willcontain ammonia(such as large tonnage refrigeration systemsand fertilizer storage systems).1.2 This method can be used on piping,valves,and con-tainers with
4、welded,fitted,or laminated sections that can besealed at their ends or between their outer and inner walls andthat are designed for internal pressures of 34.5 kPa 5 psig orgreater.1.3 Basic procedures are described based on the type ofinspection used.These procedures should be limited to findingleak
5、age indications of 4.5 1012mol/s 1 107Std cm3/s2or larger.1.4 UnitsThe values stated in Std cm3/s or mol/s are to beregarded separately as standard.The values stated in eachsystem are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independ
6、ently of the other,and values from the twosystems shall not be combined.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 establish appro-priate safety,health,and environmental practices and
7、deter-mine the applicability of regulatory limitations prior to use.(For more specific safety precautionary information see 7.4,8.2,9.4.1,and 10.3.1).1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decisio
8、n on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3E1002 Practice for Leaks Using UltrasonicsE1316 Terminology for Nondestructive Examinati
9、ons2.2Other Documents:4SNT-TC-1A Recommended Practice for Personnel Qualifi-cation and Certification in Nondestructive TestingANSI/ASNT CP-189 ASNT Standard for Qualification andCertification of Nondestructive Testing Personnel3.Terminology3.1 DefinitionsFor definitions of terms used in thisstandard
10、,see Terminology E1316,Section E.4.Summary of Practice4.1 This practice consists of testing a container alreadyfilled with ammonia or of introducing an anhydrous ammoniaor an ammonia-nitrogen mixture into a container or system sothat the final ammonia percentage achieved is between 1 and100%by volum
11、e at a gauge pressure between 34.5 and689.5 kPa 5 and 100 psig.The ammonia flows through leaksexisting in welds and connections and reacts with a developerthat is applied outside of the container producing a visibleindication.4.2 Two basic developer procedures are described:4.2.1 Smoke-producing dev
12、elopers.4.2.2 Color-change developers.4.3 Methods of introducing ammonia into unfilled systemsare described,together with methods of estimating the concen-tration and pressure needed to achieve specific detectable leakrates.4.4 Procedures for testing large tanks and systems aredescribed.1This practi
13、ce 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 May 1,2019.Published July 2019.Originally approvedin 1985.Last previous edition approved in 2012 as E1066/E1066M 12.DOI
14、:10.1520/E1066_E1066M-19.2The gas temperature is referenced to 0 C.To convert to another gas referencetemperature,Tref,multiply the leak rate by(Tref+273)273.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMS
15、tandards 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West C
16、onshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.5 Ultrasonic pretesting for gross leaks is described.5.Personnel Qualification5.1 It is recommended that personnel performing leak test-ing att