1、January 2009DEUTSCHE NORM English price group 7No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 19.100!$ULE“1504134www.
2、din.deDDIN EN ISO 15548-3Non-destructive testing Equipment for eddy current examination Part 3: System characteristics and verification (ISO 15548-3:2008)English version of DIN EN ISO 15548-3:2009-01Zerstrungsfreie Prfung Technische Ausrstung fr die Wirbelstromprfung Teil 3: Kenngren des Systems und
3、 deren Verifizierung (ISO 15548-3:2008)Englische Fassung DIN EN ISO 15548-3:2009-01SupersedesDIN EN 13860-3:2004-03www.beuth.deDocument comprises 10 pagesDIN EN ISO 15548-3:2009-01 2 National foreword This standard has been prepared by Technical Committee CEN/TC 138 “Non-destructive testing” (Secret
4、ariat: AFNOR, France) in collaboration with Technical Committee ISO/TC 135 “Non-destructive testing”. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Technical Committee NA 062-08-24 AA Elektrische und magne-tisc
5、he Prfverfahren. Amendments This standard differs from DIN EN 13860-3:2004-03 as follows: a) The text of EN 13860-3:2004-03 has been adopted without any modification as EN ISO 15548-3:2008. b) The standard has been editorially revised. Previous editions DIN EN 13860-3: 2004-03 EUROPEAN STANDARD NORM
6、E EUROPENNE EUROPISCHE NORM EN ISO 15548-3 September 2008 ICS 19.100 Supersedes EN 13860-3:2003 English Version Non-destructive testing - Equipment for eddy current examination - Part 3: System characteristics and verification (ISO 15548-3:2008) Essais non destructifs - Appareillage pour examen par
7、courants de Foucault - Partie 3: Caractristiques du systme et vrifications (ISO 15548-3:2008) Zerstrungsfreie Prfung - Technische Ausrstung fr die Wirbelstromprfung - Teil 3: Kenngren des Systems und deren Verifizierung (ISO 15548-3:2008) This European Standard was approved by CEN on 18 July 2008. C
8、EN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on ap
9、plication 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 language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centr
10、e has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
11、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by an
12、y means reserved worldwide for CEN national Members. Ref. No. EN ISO 15548-3:2008: EContents Page Foreword .3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 System characteristics .4 4.1 General characteristics.4 4.2 Accessories .5 5 Verification .5 5.1 General .5 5.2 Levels of verifi
13、cation.5 5.3 Verification procedure 6 5.4 Corrective actions .6 6 Implementation of the functional verification 7 Bibliography8 2 DIN EN ISO 15548-3:2009-01 EN ISO 15548-3:2008 (E) Foreword3 EN ISO 15548-3:2008 (E) DIN EN ISO 15548-3:2009-01 This document (EN ISO 15548-3:2008) has been prepared by T
14、echnical Committee CEN/TC 138 “Non-destructive testing”, the secretariat of which is held by AFNOR, in collaboration with Technical Committee This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March
15、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 responsible for identifying any or all such patent right
16、s. 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 CEN/CENELEC Internal Regulations, the national standa
17、rds 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, Luxembourg, Malta, Netherlands, Norway, Poland, Por
18、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. ISO/TC 135 “Non-destructive testing”. 1ScopeThis part of ISO 15548 identifies the functional characteristics of a general-purpose eddy current system andprovides methods for their measurement and verification.The
19、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 bedesigned for a specific application.Where accessories are used, these are ch
20、aracterised 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 referencesThe following referenced documents are indispensable for the a
21、pplication 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 current testing Terminology3 Terms and definitionsFor the purposes of this
22、 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 implemented shall be specified. A system comprises the instrument, interco
23、nnecting elements (e.g.cable and slip rings), probe arrangement, mechanical arrangement, accessories and reference pieces.4 DIN EN ISO 15548-3:2009-01 EN ISO 15548-3:2008 (E) The general characteristics of a system include the following:a) Physical characteristics: throughput speed; scanning path; m
24、echanical 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: coating thickness, crack depth, etc.c) Functional characteristics: instrument and accessory
25、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, or added to, the basic instrument, which have not beenidentified in the foregoing text, fo
26、r 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 characteristics shall be stated.Where an accessory influences the test result, it shall underg
27、o 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 parts of the eddy current test system is maintained within acceptable limits.The physical c
28、ondition 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 calibration.For a better understanding, the verification procedure is identically described in
29、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.5 EN ISO 15548-3:2008 (E) DIN EN ISO 15548-3:2009-01 It is understood that initial type testing has already
30、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 referenceblocks to verify that the performance is within specified limits.The verification is usually performed at the
31、 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 time scale is performed to ensure the stability of selected characteristics of theeddy current instrument, pro
32、be, accessories and reference blocks.c) Level 3: CharacterisationA verification is performed on the eddy current instrument, probe accessories and reference blocks toassess conformity with the characteristics supplied by the manufacturer.The organization requiring the verification shall specify the
33、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 essential characteristics and the levelof verification shall be specified in a verification procedure.The examinati
34、on 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 characteristics featured in an instrument, probe and reference block shall be provided, inorder that verification
35、 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 theproduct examined since the previous successful verification. Corrective actions shall be made to bring theperfor
36、mance 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 decision shall be made concerning the instrument, the probe orthe accessory being verified.Level 3: When the chara
37、cteristic 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 beingverified.Table 1 Verification procedureLevel Object Typical time period Instruments Responsible entity1Global func
38、tional checkStability of system performanceFrequently, e.g. hourly, dailyReference blocks User2Detailed functional check and calibrationStability of selected characteristics of the instrument, probes and accessoriesLess frequently but at least annually and after repairCalibrated measuring instrument
39、s, reference blocksUser3CharacterisationAll characteristics of the instrument, probes and accessoriesOnce (on release) and when requiredCalibrated laboratory measuring instruments and reference blocksManufacturer, user6 DIN EN ISO 15548-3:2009-01 EN ISO 15548-3:2008 (E) 6 Implementation of the funct
40、ional 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 the system considered as a global entity.The implementation of the functional verification of a system is specific to each appl
41、ication, and requires aprocedure to be defined in the application document and stating at least: periodicity of the verification; conditions triggering a verification: e.g. replacement of one of the elements of the system.This implementation includes the following steps: setting and/or calibration o
42、f 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, phase and amplituderesponse on reference blocks, stability of balance; measurement method for each item.If the results of the
43、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 acceptable limits.These actions could be: recalibration of the system; level 2 or level 3 verification for one or more elements o
44、f 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 reported e.g. re-examination or use of another non-destructivetesting (NDT) method.7 EN ISO 15548-3:2008 (E) DIN EN ISO 15548-3:2009-01 Bibliography1 ISO 15549, Non-destructive testing Eddy current testing General principles8 DIN EN ISO 15548-3:2009-01 EN ISO 15548-3:2008 (E)
