BS EN ISO 15548-3-2008 Non-destructive testing - Equipment for eddy current nexamination - Part 3 System characteristics and verification《无损检测 涡流检验设备 设备特性和验证》.pdf

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1、BS EN ISO15548-3:2008ICS 19.100,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDNon-destructive testing Equipment for eddycurrent examinationPart 3: System characteristics andverification (ISO 15548-3:2008)This British Standardwas published underthe authority of

2、 theStandards Policy andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 55890 0Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 15548-3:2008National forewordThis British Standard is the UK implementation of EN ISO15548-3:2008. It supersedes BS EN 13860-3:2003 and whi

3、ch iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/46, Non-destructive testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a co

4、ntract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 15548-3September 2008ICS 19.100 Supersedes EN 13860-3:2003 English VersionNon-destructive testing - Equipmen

5、t for eddy currentexamination - Part 3: System characteristics and verification(ISO 15548-3:2008)Essais non destructifs - Appareillage pour examen parcourants de Foucault - Partie 3: Caractristiques dusystme et vrifications (ISO 15548-3:2008)Zerstrungsfreie Prfung - Prfeinrichtung frWirbelstromprfun

6、g - Teil 3: Kenngren des Systems undVerifizierung (ISO 15548-3:2008)This European Standard was approved by CEN on 18 July 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard w

7、ithout any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other languag

8、e made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,Fra

9、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NO

10、RMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 15548-3:2008: EBS EN ISO 15548-3:2008EN ISO 15548-3:2008 (E) 3 Foreword This document (EN ISO 15548-3:2008) has been

11、 prepared by Technical Committee CEN/TC 138 “Non-destructive testing”, the secretariat of which is held by AFNOR, in collaboration with Technical Committee ISO/TC 135 “Non-destructive testing“. This European Standard shall be given the status of a national standard, either by publication of an ident

12、ical text or by endorsement, at the latest by March 2009, and conflicting national standards shall be withdrawn at the latest by March 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held resp

13、onsible for identifying any or all such patent rights. This document supersedes EN 13860-3:2003. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). According to the C

14、EN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

15、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN ISO 15548-3:2008ISO 15548-3:2008(E) ISO 2008 All rights reserved iiiForewordISO (the International Organization for Standardization) is a worldwide federat

16、ion of national standards bodies(ISO member bodies). The work of preparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee.

17、International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the InternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with t

18、he rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standardsadopted by the technical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires approval by

19、at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 15548-3 was prepared by European Committee for St

20、andardization (CEN) Technical CommitteeCEN/TC 138, Non-destructive testing, in collaboration with ISO Technical Committee TC 135, Non-destructivetesting, Subcommittee SC 4, Eddy current methods, in accordance with the Agreement on technicalcooperation between ISO and CEN (Vienna Agreement).ISO 15548

21、 consists of the following parts, under the general title Non-destructive testing Equipment for eddycurrent examination: Part 1: Instrument characteristics and verification Part 2: Probe characteristics and verification Part 3: System characteristics and verificationBS EN ISO 15548-3:2008.iv BS EN I

22、SO 15548-3:2008INTERNATIONAL STANDARD ISO 15548-3:2008(E) ISO 2008 All rights reserved 1Non-destructive testing Equipment for eddy current examination Part 3:System characteristics and verification1ScopeThis part of ISO 15548 identifies the functional characteristics of a general-purpose eddy curren

23、t system andprovides methods for their measurement and verification.The evaluation of these characteristics permits a well-defined description and comparability of an eddy currentequipment.By careful choice of the characteristics, a consistent and effective eddy current examination system can bedesi

24、gned for a specific application.Where accessories are used, these are characterised using the principles of this part of ISO 15548.This part of ISO 15548 does not give the extent of verification nor acceptance criteria for the characteristics.These are given in the application documents.2 Normative

25、referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO 12718, Non-destructive testing Eddy cu

26、rrent testing Terminology3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12718 apply.4 System characteristics4.1 General characteristicsThe system is designed to examine a defined product or perform a defined measurement; the eddy currenttechniques im

27、plemented shall be specified. A system comprises the instrument, interconnecting elements (e.g.cable and slip rings), probe arrangement, mechanical arrangement, accessories and reference pieces.BS EN ISO 15548-3:2008ISO 15548-3:2008(E)2 ISO 2008 All rights reservedThe general characteristics of a sy

28、stem include the following:a) Physical characteristics: throughput speed; scanning path; mechanical arrangement and settings and their interaction with the product to be tested.b) Calibration-related characteristics: response to a reference block; correlation of response with inferred parameters: co

29、ating thickness, crack depth, etc.c) Functional characteristics: instrument and accessory settings accessible on knobs or displays; balance and origin of complex plane display; dynamic range of test system in amplitude and phase.4.2 AccessoriesThese are functional units that may be integrated into,

30、or added to, the basic instrument, which have not beenidentified in the foregoing text, for example, lift-off compensation system, marking system, magnetic saturationunit, demagnetizing arrangements, data acquisition and analysis software.The function of these units shall be described and their char

31、acteristics shall be stated.Where an accessory influences the test result, it shall undergo a specific verification in accordance with awritten procedure.5 Verification5.1 GeneralFor a consistent and effective eddy current examination, it is necessary to verify that the performance of thecomponent p

32、arts of the eddy current test system is maintained within acceptable limits.The physical condition of the reference pieces shall be verified to be within acceptable limits before being usedto verify the system or probes.The measuring equipment used for verification shall be in a known state of calib

33、ration.For a better understanding, the verification procedure is identically described in all three parts of ISO 15548.5.2 Levels of verificationThere are three levels of verification. Each level defines the time intervals between verification and thecomplexity of the verification.BS EN ISO 15548-3:

34、2008ISO 15548-3:2008(E) ISO 2008 All rights reserved 3It is understood that initial type testing has already been done by the manufacturer or under his control.a) Level 1: Global functional checkA verification is performed at regular intervals of time on the eddy current test system, using reference

35、blocks to verify that the performance is within specified limits.The verification is usually performed at the examination location.The time interval and the reference pieces are defined in the verification procedure.b) Level 2: Detailed functional check and calibrationA verification on an extended t

36、ime scale is performed to ensure the stability of selected characteristics of theeddy current instrument, probe, accessories and reference blocks.c) Level 3: CharacterisationA verification is performed on the eddy current instrument, probe accessories and reference blocks toassess conformity with th

37、e characteristics supplied by the manufacturer.The organization requiring the verification shall specify the characteristics to be verified.The main features of verification are shown in Table 1.5.3 Verification procedureThe characteristics to be verified are dependent on the application. The essent

38、ial characteristics and the levelof verification shall be specified in a verification procedure.The examination procedure for the application shall refer to the verification procedure. This can restrict thenumber of characteristics to be verified for a defined application.Sufficient data on the char

39、acteristics featured in an instrument, probe and reference block shall be provided, inorder that verification may be performed within the scope of this part of ISO 15548.5.4 Corrective actionsLevel 1: When the performance is not within the specified limits, a decision shall be made concerning thepro

40、duct examined since the previous successful verification. Corrective actions shall be made to bring theperformance within the acceptable limits.Level 2: When the deviation of the characteristic is greater than the acceptable limits specified by themanufacturer or in the application document, a decis

41、ion shall be made concerning the instrument, the probe orthe accessory being verified.Level 3: When the characteristic is out of the acceptable range specified by the manufacturer or by theapplication document, a decision shall be made concerning the instrument, the probe or the accessory beingverif

42、ied.Table 1 Verification procedureLevel Object Typical time period Instruments Responsible entity1Global functional checkStability of system performanceFrequently, e.g. hourly, dailyReference blocks User2Detailed functional check and calibrationStability of selected characteristics of the instrument

43、, probes and accessoriesLess frequently but at least annually and after repairCalibrated measuring instruments, reference blocksUser3CharacterisationAll characteristics of the instrument, probes and accessoriesOnce (on release) and when requiredCalibrated laboratory measuring instruments and referen

44、ce blocksManufacturer, userBS EN ISO 15548-3:2008ISO 15548-3:2008(E)4 ISO 2008 All rights reserved6 Implementation of the functional verificationThe functional verification of the system cannot be limited to the verification of the elements of the system,taken separately. It shall be carried out on

45、the system considered as a global entity.The implementation of the functional verification of a system is specific to each application, and requires aprocedure to be defined in the application document and stating at least: periodicity of the verification; conditions triggering a verification: e.g.

46、replacement of one of the elements of the system.This implementation includes the following steps: setting and/or calibration of the system for the verification; assessment of the acceptable limits of performance; verification of specified items: at least signal-to-noise ratio for reference signals,

47、 phase and amplituderesponse on reference blocks, stability of balance; measurement method for each item.If the results of the measurements indicate that the performance is out of the acceptable limits, this shall bereported and corrective actions shall be made to bring the performance within the ac

48、ceptable limits.These actions could be: recalibration of the system; level 2 or level 3 verification for one or more elements of the system.All of the product examined since the previous successful verification is considered as not examined and thedecision made concerning this product shall be repor

49、ted e.g. re-examination or use of another non-destructivetesting (NDT) method.BS EN ISO 15548-3:2008ISO 15548-3:2008(E) ISO 2008 All rights reserved 5Bibliography1 ISO 15549, Non-destructive testing Eddy current testing General principlesBS EN ISO15548-3:2008BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards InstitutionBSI is the