ASTM E2096-2005 Standard Practice for In Situ Examination of Ferromagnetic Heat-Exchanger Tubes Using Remote Field Testing《远程现场试验法现场检验铁磁热交换器管道的标准规程》.pdf
《ASTM E2096-2005 Standard Practice for In Situ Examination of Ferromagnetic Heat-Exchanger Tubes Using Remote Field Testing《远程现场试验法现场检验铁磁热交换器管道的标准规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM E2096-2005 Standard Practice for In Situ Examination of Ferromagnetic Heat-Exchanger Tubes Using Remote Field Testing《远程现场试验法现场检验铁磁热交换器管道的标准规程》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 2096 05Standard Practice forIn Situ Examination of Ferromagnetic Heat-Exchanger TubesUsing Remote Field Testing1This standard is issued under the fixed designation E 2096; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi
2、on, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes procedures to be followed duringremote field examination of installed ferroma
3、gnetic heat-exchanger tubing for baseline and service-induced discontinui-ties.1.2 This practice is intended for use on ferromagnetic tubeswith outside diameters from 0.500 to 2.000 in. 12.70 to 50.80mm, with wall thicknesses in the range from 0.028 to 0.134 in.0.71 to 3.40 mm.1.3 This practice does
4、 not establish tube acceptance criteria;the tube acceptance criteria must be specified by the usingparties.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall
5、be used independently of the other. Combiningvalues from the two systems may result in nonconformancewith the standard.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 practice to establish appro-pri
6、ate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E 543 Practice for Agencies Performing NondestructiveTestingE 1316 Terminology for Nondestructive Examinations2.2 Other Documents:ASNT SNT-TC-1A Recommen
7、ded Practice for Nonde-structive Testing Personnel Qualification and Certifica-tion3Can CGSB-48.9712-95 Qualification of NondestructiveTesting Personnel, Natural Resources Canada43. Terminology3.1 GeneralDefinitions of terms used in this practice canbe found in Terminology E 1316, Section A, “Common
8、 NDTTerms,” and Section C, “Electromagnetic Testing.”3.2 Definitions:3.2.1 detector, none or more coils or elements used tosense or measure magnetic field; also known as a receiver.3.2.2 exciter, na device that generates a time-varyingelectromagnetic field, usually a coil energized with alternatingc
9、urrent (ac); also known as a transmitter.3.2.3 nominal tube, na tube or tube section meeting thetubing manufacturers specifications, with relevant propertiestypical of a tube being examined, used for reference ininterpretation and evaluation.3.2.4 remote field, nas applied to nondestructive testing,
10、the electromagnetic field which has been transmitted throughthe test object and is observable beyond the direct couplingfield of the exciter.3.2.5 remote field testing, na nondestructive test methodthat measures changes in the remote field to detect andcharacterize discontinuities.3.2.6 using partie
11、s, nthe supplier and purchaser.3.2.6.1 DiscussionThe party carrying out the examinationis referred to as the “supplier,” and the party requesting theexamination is referred to as the “purchaser,” as required inForm and Style for ASTM Standards, April 2004. In commonusage outside this practice, these
12、 parties are often referred to asthe “operator” and “customer,” respectively.3.3 Definitions of Terms Specific to This Standard:1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.07 onElectromagnetic Methods.
13、Current edition approved January 1, 2005. Published January 2005. Originallyapproved in 2000. Last previous edition approved in 2000 as E 2096 - 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandar
14、ds volume information, refer to the standards Document Summary page onthe ASTM website.3Available from TheAmerican Society for Nondestructive Testing (ASNT), P.O.Box 28518, 1711 Arlingate Lane, Columbus, OH 43228-0518.4Available from CGSB Sales Centre; Place du Portage, Phase 3, 6B1; 11 LaurierStree
15、t, Hull QC, Canada K1A 1G6.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.3.1 flaw characterization standard, na standard used inaddition to the RFT system reference standard, with artificial orservice-induced flaws, used for flaw
16、 characterization.3.3.2 nominal point, na point on the phase-amplitudediagram representing data from nominal tube.3.3.3 phase-amplitude diagram, na two-dimensional rep-resentation of detector output voltage, with angle representingphase with respect to a reference signal, and radius represent-ing am
17、plitude (Fig. 1a and 1b).3.3.3.1 DiscussionIn this practice, care has been taken touse the term “phase angle” (and “phase”) to refer to an angularequivalent of time displacement, as defined in TerminologyE 1316. When an angle is not necessarily representative oftime, the general term “angle of an in
18、dication on the phase-amplitude diagram” is used.3.3.4 RFT system, nthe electronic instrumentation,probes, and all associated components and cables required forperforming RFT.3.3.5 RFT system reference standard, na reference stan-dard with specified artificial flaws, used to set up and standard-ize
19、a remote field system and to indicate flaw detectionsensitivity.3.3.6 sample ratethe rate at which data is digitized fordisplay and recording, in data points per second.3.3.7 strip chart, na diagram that plots coordinates ex-tracted from points on a phase-amplitude diagram versus timeor axial positi
20、on (Fig. 1c).3.3.8 zero point, na point on the phase-amplitude diagramrepresenting zero detector output voltage.3.3.8.1 DiscussionData on the phase-amplitude diagramare plotted with respect to the zero point. The zero point isseparate from the nominal point unless the detector is config-ured for zer
21、o output in nominal tube. The angle of a flawindication is measured about the nominal point.3.4 Acronyms:Acronyms:3.4.1 RFT, nremote field testing4. Summary of Practice4.1 The RFT data is collected by passing a probe througheach tube. The electromagnetic field transmitted from theexciter to the dete
22、ctor is affected by discontinuities; by thedimensions and electromagnetic properties of the tube; and byobjects in and around the tube that are ferromagnetic orconductive. System sensitivity is verified using the RFT systemFIG. 1 A and B: Typical Phase-Amplitude Diagrams Used in RFT; C: Generic Stri
23、p Chart With FlawE2096052reference standard. System sensitivity and settings are checkedand recorded prior to and at regular intervals during theexamination. Data and system settings are recorded in amanner that allows archiving and later recall of all data andsystem settings for each tube. Interpre
24、tation and evaluation arecarried out using one or more flaw characterization standards.The supplier generates a final report detailing the results of theexamination.5. Significance and Use5.1 The purpose of RFT is to evaluate the condition of thetubing. The evaluation results may be used to assess t
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