ASTM E1930E1930M-17 Standard Practice for Examination of Liquid-Filled Atmospheric and Low-Pressure Metal Storage Tanks Using Acoustic Emission.pdf
《ASTM E1930E1930M-17 Standard Practice for Examination of Liquid-Filled Atmospheric and Low-Pressure Metal Storage Tanks Using Acoustic Emission.pdf》由会员分享,可在线阅读,更多相关《ASTM E1930E1930M-17 Standard Practice for Examination of Liquid-Filled Atmospheric and Low-Pressure Metal Storage Tanks Using Acoustic Emission.pdf(12页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E1930/E1930M 17Standard Practice forExamination of Liquid-Filled Atmospheric and Low-PressureMetal Storage Tanks Using Acoustic Emission1This standard is issued under the fixed designation E1930/E1930M; the number immediately following the designation indicates the yearof original adopt
2、ion or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This practice covers guidelines for acoustic emission(AE) examinations o
3、f new and in-service aboveground storagetanks of the type used for storage of liquids.1.2 This practice will detect acoustic emission in areas ofsensor coverage that are stressed during the course of theexamination. For flat-bottom tanks these areas will generallyinclude the sidewalls (and roof if p
4、ressure is applied above theliquid level). The examination may not detect flaws on thebottom of flat-bottom tanks unless sensors are located on thebottom.1.3 This practice may require that the tank experience a loadthat is greater than that encountered in normal use. The normalcontents of the tank c
5、an usually be used for applying this load.1.4 This practice is not valid for tanks that will be operatedat a pressure greater than the examination pressure.1.5 It is not necessary to drain or clean the tank beforeperforming this examination.1.6 This practice applies to tanks made of carbon steel,sta
6、inless steel, aluminum and other metals.1.7 This practice may also detect defects in tank linings (forexample, high-bulk, phenolics and other brittle materials).1.8 AE measurements are used to detect and localize emis-sion sources. Other NDT methods may be used to confirm thenature and significance
7、of the AE indications (s). Proceduresfor other NDT techniques are beyond the scope of this practice.1.9 Examination liquid must be above its freezing tempera-ture and below its boiling temperature.1.10 Superimposed internal or external pressures must notexceed design pressure.1.11 Leaks may be found
8、 during the course of this exami-nation but their detection is not the intention of this practice.1.12 UnitsThe values stated in either SI units or inch-pound units are to be regarded as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used indep
9、endently of the other. Combiningvalues from the two systems may result in non-conformancewith the standards.1.13 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
10、 and health practices and determine the applica-bility of regulatory limitations prior to use. Specific precau-tionary statements are given in Section 8.1.14 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Dec
11、ision 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:2E543 Specification for Agencies Performing NondestructiveTestingE650 Guide for M
12、ounting Piezoelectric Acoustic EmissionSensorsE976 Guide for Determining the Reproducibility ofAcousticEmission Sensor ResponseE1106 Test Method for Primary Calibration of AcousticEmission SensorsE1316 Terminology for Nondestructive ExaminationsE1781 Practice for Secondary Calibration of Acoustic Em
13、is-sion Sensors1This 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 June 1, 2017. Published June 2017. Originallyapproved in 1997. Last previous edition ap
14、proved in 2012 as E1930 - 12. DOI:10.1520/E1930_E1930M-17.2For 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.*A
15、Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization establi
16、shed 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.1E2374 Guide for Acoustic Emission System PerformanceVerification2.2 ANSI/ASNT Standard:Recommended Practice
17、ASNT SNT-TC-1A for Qualificationand Certification of Nondestructive Testing Personnel3ANSI/ASNT CP-189 Standard for Qualification and Certifi-cation of NDT Personnel32.3 ASME Standard:Section V, Article 12, Boiler & Pressure Vessel Code42.4 AIA Document:NAS-410 Certification and Qualification of Non
18、destructiveTesting Personnel52.5 ISO Standard:6ISO 9712 Non-Destructive Testing: Qualification and Certi-fication of NDT Personnel3. Terminology3.1 Definitions:3.1.1 This practice makes use of definitions provided inTerminology E1316. Definitions for terms that do not appear inTerminology E1316 are
19、given below.3.2 Definitions of Terms Specific to This Standard:3.2.1 AE activitythe presence of acoustic emission duringan examination. It is normally measured by one or more AEparameters such as number of hits, events, signal strength orAE counts. A source is considered active if its AE activitycon
20、sistently increases with increasing load.3.2.2 maximum operating pressurelargest pressure withinthe tank during the six-month period prior to AE examination.This pressure involves the maximum liquid contents level, therange of temperature experienced during operation, superim-posed hydrostatic or pn
21、eumatic pressure, or both, and anyoverload or upset conditions which may have occurred.3.2.3 signal strengththe measured area of the rectified AEsignal.4. Summary of Practice4.1 GeneralThis practice consists of subjecting storagetanks to increasing stress while monitoring with sensors thatare sensit
22、ive to acoustic emission (transient stress waves)caused by growing flaws. The instrumentation and techniquesfor sensing and analyzing AE are described herein.4.2 LoadingThis practice requires stressing the tank.Stressing can be accomplished by filling the tank with itsnormal contents or with an alte
23、rnative liquid and in some casesapplying a superimposed hydrostatic or pneumatic pressure, orboth.4.3 ReportThe report documents results of the AE exami-nation and other important information. The report also pro-vides recommendations for follow-up NDT examinations atspecific locations.5. Significan
24、ce and Use5.1 GeneralThis procedure is used for evaluation of thestructural integrity of atmospheric storage tanks. The AEmethod can detect flaws which are in locations that are stressedduring pressurization. Such locations include the tank wall,welds attaching pads to the tank, nozzle attachments,
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTM E1930E1930M 17 Standard Practice for Examination of Liquid Filled Atmospheric and Low Pressure Metal Storage Tanks Using Acoustic Emission

链接地址:http://www.mydoc123.com/p-287057.html