1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 3059:2012Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditionsBS EN ISO 3059:2012 BRITISH STANDARDNational forewordThis British Sta
2、ndard is the UK implementation of EN ISO 3059:2012. It supersedes BS EN ISO 3059:2001, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e W E E / 4 6 , N o n - d e s t r u c t i v e t e s t i n g .A list of organizations represented on thi
3、s committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 74405 1 I
4、CS 19.100 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2012.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME
5、EUROPENNE EUROPISCHE NORM EN ISO 3059 December 2012 ICS 19.100 Supersedes EN ISO 3059:2001English Version Non-destructive testing - Penetrant testing and magnetic particle testing - Viewing conditions (ISO 3059:2012) Essais non destructifs - Contrle par ressuage et contrle par magntoscopie - Conditi
6、ons dobservation (ISO 3059:2012) Zerstrungsfreie Prfung - Eindringprfung und Magnetpulverprfung - Betrachtungsbedingungen (ISO 3059:2012) This European Standard was approved by CEN on 30 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond
7、itions 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 application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exist
8、s 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national stan
9、dards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sl
10、ovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide
11、 for CEN national Members. Ref. No. EN ISO 3059:2012: EBS EN ISO 3059:2012 EN ISO 3059:2012 (E) 3 Foreword This document (EN ISO 3059:2012) has been prepared by Technical Committee CEN/TC 138 “Non-destructive testing“, the secretariat of which is held by AFNOR, in collaboration with Technical Commit
12、tee ISO/TC 135 “Non-destructive testing“. 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 June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. Attention is
13、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 rights. This document supersedes EN ISO 3059:2001. According to the CEN/CENELEC Internal Regulations, the n
14、ational standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
15、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN ISO 3059:2012ISO 3059:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national stand
16、ards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International orga
17、nizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given i
18、n the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 %
19、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 patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 3059 was prepared by the European Committee for Standardizatio
20、n (CEN) Technical Committee CEN/TC 138, Non-destructive testing, in collaboration with ISO Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 2, Surface methods, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).This third edition
21、cancels and replaces the second edition (ISO 3059:2001) which has been technically revised.Changes from the second edition include: updating of the normative references; addition of a terms and definitions clause; review of requirements for colour contrast and fluorescent techniques; reduction of ve
22、rification period of irradiation and illuminance meters to 12 months; an editorial review of the text. ISO 2012 All rights reserved iiiBS EN ISO 3059:2012ISO 3059:2012(E)IntroductionBoth penetrant and magnetic particle testing require controlled conditions for viewing indications, e.g.: adequate whi
23、te light to achieve reliable testing with colour contrast techniques; adequate UV-A irradiance with minimal light for fluorescent systems.iv ISO 2012 All rights reservedBS EN ISO 3059:2012Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditions1 ScopeThis Internatio
24、nal Standard specifies the control of the viewing conditions for magnetic particle and penetrant testing. It includes minimum requirements for the illuminance and UV-A irradiance and their measurement. It is intended for use when the human eye is the primary detection aid.This International Standard
25、 does not cover the use of actinic blue light sources.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includin
26、g any amendments) applies.ISO 9712, Non-destructive testing Qualification and certification of personnelISO 12706, Non-destructive testing Penetrant testing VocabularyISO 12707, Non-destructive testing Terminology Terms used in magnetic particle testingIEC 60050-845, International electrotechnical v
27、ocabulary Chapter 845: lightingEN 1330-1, Non-destructive testing Terminology Part 1: List of general termsEN 1330-2, Non-destructive testing Terminology Part 2: Terms common to the non-destructive testing methods3 Terms and definitionsFor the purposes of this document, the terms and definitions giv
28、en in ISO 12706, ISO 12707, EN 1330-1, and EN 1330-2 apply.4 Safety precautionsAll relevant international, regional, national and local regulations including health and safety shall be taken into account (e.g. optical radiation directives).Care shall be taken to minimize exposure of personnel to har
29、mful optical radiation. Exposure to UV radiation below 330 nm shall be avoided (e.g. from damaged or cracked filters) and exposure to high levels of other potentially harmful radiation (e.g. 365 nm or visible radiation from white light LEDs, which have a high proportion of blue light) should be mini
30、mized. The eye is particularly at risk.5 Colour contrast techniques5.1 Light sourcesInspection shall be carried out in daylight or artificial white light. Where artificial sources are used, the colour temperature shall not be below 2 500 K and it is recommended to use sources above 3 300 K. Consult
31、the information from the lamp manufacturer to confirm the colour temperature.INTERNATIONAL STANDARD ISO 3059:2012(E) ISO 2012 All rights reserved 1BS EN ISO 3059:2012ISO 3059:2012(E)Lighting conditions affect detection capability. The best conditions are when the surrounding area has some background
32、 light. Light reaching the inspectors eyes directly or indirectly from the light source or as a result of the limited screening of other sources should be avoided.Sources may not reach a steady state immediately and shall be allowed to stabilize before use. The light output can vary, e.g. due to age
33、ing of the light source or deterioration of the reflector.The test surface shall be illuminated evenly. Glare and reflections shall be avoided.NOTE Failure of a single LED within an array can cause uneven illumination.5.2 MeasurementsThe illuminance at the test surface shall be determined by means o
34、f an illuminance meter under working conditions. The response of the meter shall be similar to the photopic response of the human eye (as specified in IEC 60050-845).NOTE CIE 0691provides further information on evaluation of light meters.5.3 RequirementsThe level of illuminance for removal of excess
35、 penetrant shall be at least 350 lx.For inspection, the illuminance at the test surface shall be 500 lx or greater.In some cases, a minimum of 1 000 lx may be required.Permanently tinted spectacles, neutral density glasses or those which darken under inspection conditions shall not be worn, except f
36、or techniques involving white background and very high levels of daylight (generally above 20 000 lx) which can reduce indication detectability. In this case, the use of neutral density glasses are permitted. Care shall be taken under such conditions.6 Fluorescent techniques6.1 Ultraviolet radiation
37、Testing shall be carried out with UV-A radiation using a source with a maximum intensity at (365 5) nm and a full width at half maximum (FWHM) of 30 nm. It is important to minimize visible background light incident upon the component or light reaching the inspectors eyes directly or indirectly from
38、the UV-A source or as a result of the limited screening of other sources. Sources may not reach a steady state immediately and shall be allowed to stabilize before use. The UV-A irradiance can vary, e.g. due to ageing of the light source or deterioration of the reflector or filter.The test surface s
39、hall be irradiated evenly.NOTE Failure of a single LED within an array can cause uneven irradiation.Typical examples of light sources are mercury discharge lamps, halogen lamps, xenon lamps, and LED arrays.6.2 MeasurementsThe UV-A irradiance shall be measured under working conditions on the test sur
40、face by means of a UV-A radiometer having a sensitivity response as defined in Figure 1.Measurements shall be carried out when the lamp output has stabilized (for mercury discharge lamps, this shall not be less than 10 min after switching on).For measurement of illuminance, see 5.2. The reading from
41、 the illuminance meter shall not be affected by UV-A irradiance.2 ISO 2012 All rights reservedBS EN ISO 3059:2012ISO 3059:2012(E)KeyS(l)relrelative spectral responsel wavelengthRelative spectral response is the ratio of the response of the sensor to radiation of a given wavelength, l, to the respons
42、e at 365 nm.The relative spectral response curve for a suitable sensor shall not enter the shaded area. A, B, C and D in the figure denote limits corresponding to the following requirements:A the relative spectral response shall not exceed 105 % for any wavelength;B the peak relative spectral respon
43、se shall occur between 355 nm and 375 nm;C the relative spectral response at a wavelength of 313 nm shall be less than 10 %;D the relative spectral response at a wavelength of 405 nm shall be less than 2 %.The curve shown is an example of one produced by an acceptable meter.Figure 1 Spectral respons
44、e of UV-A irradiation meters ISO 2012 All rights reserved 3BS EN ISO 3059:2012ISO 3059:2012(E)6.3 RequirementsFor the removal of excess penetrant, the UV-A irradiance shall be at least 1 W/m2(100 W/cm2) and the illuminance shall be less than 100 lx.For inspection, the UV-A irradiance shall be 10 W/m
45、2(1 000 W/cm2) or greater and the illuminance 20 lx or less on the test surface. The measurements shall be carried out under working conditions with the UV-A source turned on and stabilized.Permanently tinted spectacles or those which darken under inspection conditions shall not be worn.For penetran
46、t testing, the combination of high level and long duration of UV-A irradiance should be avoided, generally not more than 50 W/m2(5 000 W/cm2).There shall be no glare or other source of visible light or UV-A radiation within the operators field of vision. Ambient visible light levels shall be 20 lx o
47、r less.7 Visual acuityThe visual acuity of NDT personnel shall be adequate for the NDT task carried out and shall meet the requirements of ISO 9712.8 CalibrationThe working range of irradiation and illuminance meters shall be calibrated at the frequency recommended by the manufacturer using equipmen
48、t and a system which is traceable to a national, European or International Standard. This period shall not exceed 12 months. The calibration of the UV-A irradiation meter shall be carried out with narrow band radiation at a wavelength of 365 nm. Maintenance of or damage to the meter shall necessitat
49、e calibration. When detachable sensors and readout units are used, calibration shall be carried out on the entire system (readout unit and sensors).The calibration shall be documented by a certificate.4 ISO 2012 All rights reservedBS EN ISO 3059:2012ISO 3059:2012(E)Bibliography1 CIE 069, Methods of characterizing illuminance meters and luminance meters: Performance, characteristics and specifications ISO 2012 All rights reserved 5This page deliberately left blankThis page deliberately left bl
