ASTM E2863-2011 Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization《用热增压法进行焊接钢球体压力容器的声发射检验的标准操作规程》.pdf
《ASTM E2863-2011 Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization《用热增压法进行焊接钢球体压力容器的声发射检验的标准操作规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM E2863-2011 Standard Practice for Acoustic Emission Examination of Welded Steel Sphere Pressure Vessels Using Thermal Pressurization《用热增压法进行焊接钢球体压力容器的声发射检验的标准操作规程》.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E2863 11Standard Practice forAcoustic Emission Examination of Welded Steel SpherePressure Vessels Using Thermal Pressurization1This standard is issued under the fixed designation E2863; the number immediately following the designation indicates the year oforiginal adoption or, in the ca
2、se 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 is commonly used for periodic inspectionand testing of welded steel gaseous
3、spheres (bottles) is theacoustic emission (AE) method. AE is used in place ofhydrostatic volumetric expansion testing. The periodic inspec-tion and testing of bottles by AE testing is achieved withoutdepressurization or contamination as is required for hydrostaticvolumetric expansion testing.1.2 The
4、 required test pressurization is achieved by heatingthe bottle in an industrial oven designed for this purpose. Themaximum temperature needed to achieve the AE test pressureis #250F (121C).1.3 AE monitoring of the bottle is performed with multiplesensors during the thermal pressurization.1.4 This pr
5、actice was developed for periodic inspection andtesting of pressure vessels containing Halon (UN 1044), whichis commonly used aboard commercial aircraft for fire suppres-sion. In commercial aircraft, these bottles are hermeticallysealed by welding in the fill port. Exit ports are opened byexplosivel
6、y activated burst disks. The usage of these pressurevessels in transportation is regulated under US Department ofTransportation (DOT), Code of Federal Regulations CFR 49.ADOT special permit authorizes the use of AE testing forperiodic inspection and testing in place of volumetric expan-sion and visu
7、al inspection. These bottles are spherical withdiameters ranging from 5 to 16 in. (127 to 406 mm).1.5 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are mathemati-cal conversions to SI units that are provided for informationonly and are not c
8、onsidered standard.1.6 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 and health practices and determine the applica-bility of regulatory limitations prior to
9、use. Specific precau-tionary statements are given in Section 8.2. Referenced Documents2.1 ASTM Standards:2E543 Specification for Agencies Performing Nondestruc-tive TestingE650 Guide for Mounting Piezoelectric Acoustic EmissionSensorsE976 Guide for Determining the Reproducibility of Acous-tic Emissi
10、on Sensor ResponseE1316 Terminology for Nondestructive ExaminationsE2075 Practice for Verifying the Consistency of AE-SensorResponse Using an Acrylic RodE2374 Guide for Acoustic Emission System PerformanceVerification2.2 ASNT Standards:3SNT-TC-1A Recommended Practice for NondestructiveTesting Person
11、nel Qualification and CertificationANSI/ASNT CP-189 Standard for Qualification and Certi-fication of Nondestructive Testing Personnel2.3 Code of Federal Regulations:Section 49 Code of Federal Regulations, Hazardous Mate-rials Regulations of the Department of Transportation,Paragraphs 173.34, 173.301
12、, 178.36, 178.37, and 178.4542.4 Compressed Gas Association Standard:Pamphlet C-5 Service Life, Seamless High Pressure Cylin-ders53. Terminology3.1 DefinitionsSee Terminology E1316 for general termi-nology applicable to this test method.3.2 Definitions of Terms Specific to This Standard:3.2.1 marked
13、 service pressurepressure for which a vesselis rated. Normally, this value is stamped on the vessel1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.04 onAcoustic Emission Method.Current edition approved Dec
14、. 15, 2011. Published January 2012. DOI:10.1520/E2863-11.2For 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.3Ava
15、ilable fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.4Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo
16、.gov.5Available from Compressed Gas Association (CGA), 4221 Walney Rd., 5thFloor, Chantilly, VA 20151-2923, http:/.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Summary of Practice4.1 Acoustic emission (AE) sensors are mounted o
17、n apressure vessel, and emission is monitored while the pressurevessel is heated to a pre-determined temperature for achievingthe desired AE test pressure. The elevated temperature resultsin expansion of the gaseous component and causes the increaseof the internal pressure. This increasing pressure
18、applies stressin the pressure vessel wall. The ultimate pressure is calculatedbased on the contents of the pressure vessel (bottle) andmaximum operating temperature that bottle has been exposed(for example, during fast filling).4.2 Sensors are mounted in at least six positions on thevessel and are c
19、onnected to an acoustic emission signalprocessor. The signal processor uses measured times of arrivalof emission bursts to determine the location of emissionsources on the vessels surface. The locations are continuallychecked for clustering. If a cluster grows large enough (refer toAppendix X1), and
20、/or its behavior with increasing temperature(pressure) departs significantly from a linear increase (refer toAppendix X1), the vessel is declared unsatisfactory for con-tinued service.4.3 Bottles that fail this AE examination procedure cannotbe subjected to a secondary examination (for example, hydr
21、o-static volumetric expansion test) because the AE test is themore sensitive test. When a bottle has been rejected by an AEtest, it should be rendered unserviceable.4.4 To repeat a valid AE examination on a bottle, aminimum of six months interval shall be required to the bottleafter its highest prev
22、ious internal pressure.5. Significance and Use5.1 Because of safety considerations, regulatory agencies(for example, U.S. Department of Transportation) requireperiodic tests of pressurized vessels used in commercialaviation. (see Section 49, Code of Federal Regulations). AEesting has become accepted
23、 as an alternative to the commonhydrostatic proof test.5.2 An AE test should not be conducted for a period of oneyear after a common hydrostatic test. See Note 1.NOTE 1The Kaiser effect relates to the irreversibility of acousticemission which results in decreased emission during a second pressuriza-
24、tion. Common hydrostatic tests use a relatively high test pressure (200 %of normal service pressure). (See Section 49, Code of Federal Regula-tions.) If an AE test is performed too soon after such a hydrostaticpressurization, the AE results will be insensitive below the previousmaximum test pressure
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