SANS 3059-2004 Non-destructive testing - Penetrant testing and magnetic particle testing - Viewing conditions《无损检测 渗透检测及磁粉检测 观察条件》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 19.100 ISBN 0-626-16117-7 SANS 3059:2004Edition 1ISO 3059:2001Edition 2SOUTH AFRICAN NATIONAL STANDARD Non-destructive testing Penetrant testing and

4、magnetic particle testing Viewing conditions This national standard is the identical implementation of ISO 3059:2001 (corrected and reprinted in 2002) and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groen

5、kloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 3059:2004 Edition 1 ISO 3059:2001 Edition 2 Table of changes Change No. Date Scope Abstract Describes the control of the viewing conditions for magnetic pa

6、rticle 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. Keywords calibration, colour, defects, fluorescent techniques, illuminance, irradiance, light sources,

7、 magnetic particles, measuring techniques, non-destructive tests, penetrant flaw detection, safety precautions, testing conditions, ultraviolet radiation, verification, viewing conditions, visual acuity. National foreword This South African standard was approved by National Committee StanSA SC 5120.

8、20A, Engineering materials Non-destructive testing, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. Reference numberISO 3059:2001(E)ISO 2001INTERNATIONAL STANDARD ISO3059Second edition2001-11-01Corrected and reprinted2002-01-15Non-destruc

9、tive testing Penetrant testing and magnetic particle testing Viewing conditions Essais non destructifs Essai par ressuage et essai par magntoscopie Conditions dobservation ISO 3059:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this f

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12、hat the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized i

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14、2 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved ISO 3059:2001(E) ISO 2001 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The

15、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 organizations, governmental and non-gover

16、nmental, 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 in the ISO/IEC Directives, Part 3. Dr

17、aft 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 % of member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this Interna

18、tional Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 3059 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO Technical Committee TC 135, Non-destructive

19、 testing, Subcommittee SC 2, Surface methods, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Throughout the text of this standard, read “.this European Standard.“ to mean “.this International Standard.“. This second edition cancels and replaces the

20、first edition (ISO 3059:1974), which has been technically revised. Annex ZZ provides a list of corresponding International and European Standards for which equivalents are not given in the text. ISO 3059:2001(E) iv ISO 2001 All rights reservedContents Page Foreword vIntroductionvi1 Scope12 Normative

21、 references13 Safety precaution 14 Colour contrast technique 15 Fluorescent technique 26 Visual acuit 27 Verificatio 2ISO 3059:2001(E) ISO 2001 All rights reserved vForeword The text of EN ISO 3059:2001 has been prepared by Technical Committee CEN/TC 138 “Non-destructive testing“,the secretariat of

22、which is held by AFNOR, in collaboration with Technical Committee ISO/TC 135 “Non-destructivetesting“.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by May 2002, and conflicting national standards sh

23、all be withdrawn at the latest byMay 2002.NOTE This document is referenced as prEN 1956 in some European Standards.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech

24、Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.ISO 3059:2001(E) vi ISO 2001 All rights reservedIntroduction Both penetrant and magnetic particle testing require controlled condit

25、ions for viewing indications, for example:- sufficient white light to achieve reliable testing with colour contrast techniques;- adequate UV-A irradiance with minimal light for fluorescent systems.ISO 3059:2001(E) ISO 2001 All rights reserved 11 ScopeThis European Standard describes the control of t

26、he 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 foruse when the human eye is the primary detection aid.2 Normative referencesThis European Standard incorporates by dated o

27、r undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only w

28、hen incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 473, Qualification and certification of NDT personnel - General principles.IEC 60050-845, International Electrotechnical Vocabulary - Lighting.3

29、Safety precautionsAll European, national and local regulations including health and safety shall be taken into account.Care shall be taken to minimize personnel exposure to UV-A radiation. Exposure of personnel to UV-A radiationbelow 330 nm should be avoided. Exposure of personnel to UV-B and UV-C r

30、adiation shall be avoided (e.g. fromdamaged or cracked filters).4 Colour contrast techniques4.1 Light sourcesInspection shall be carried out in daylight or with artificial light. Monochromatic sources such as sodium bulbs shallnot be used.The test surface shall be illuminated evenly. Glare and refle

31、ctions shall be avoided.4.2 MeasurementsThe illuminance at the test surface shall be determined by means of an illuminance meter under working conditions.The nominal spectral response of the meter shall be in accordance with IEC 60050-845.4.3 RequirementsThe illuminance at the test surface shall be

32、500 lx or greater.ISO 3059:2001(E) 2 ISO 2001 All rights reserved5 Fluorescent techniques5.1 Ultraviolet radiationTesting shall be carried out with UV-A radiation (315 nm to 400 nm) using a source with a nominal maximumintensity at 365 nm.NOTE The UV-A irradiance can vary with time due for example t

33、o ageing of the bulb or deterioriation of the reflector or filter.It is important to minimize visible background light incident upon the component or reaching the inspectors eyes directly fromthe UV-A lamp or as a result of the limited screening of other sources.5.2 MeasurementsThe UV-A irradiance s

34、hall be measured under working conditions on the test surface by means of a UV-A irradiationmeter having a sensitivity response as defined in Figure 1.Measurements shall be carried out when the lamp output has stabilized (not less than 10 minutes after switchingon).For measurement of illuminance see

35、 4.2. The reading from the illuminance meter shall not be affected by UV-Airradiance.5.3 RequirementsThe UV-A irradiance shall be greater than 10 W/m2(1000 W/cm2) and the illuminance less than 20 lx on the testsurface. The measurements shall be carried out under working conditions with the UV-A sour

36、ce turned on andstabilized.For penetrant testing the UV-A irradiance shall not be greater than 50 W/m2(5000 W/cm2).There shall be no glare or other source of visible light or UV-A radiation within the operators field of vision. Ambientvisible light levels shall be less than 20 lx.At penetrant washin

37、g stations a UV-A irradiance of at least 3 W/m2(300 W/cm2) shall be provided on the parts, andthe illuminance shall be less than 150 lx.6 Visual acuityRequirements shall be in accordance with EN 473.7 VerificationThe calibration of irradiation and illuminance meters shall be verified at the frequenc

38、y recommended by themanufacturer using a standard which is traceable to national or European Standards. This period shall not exceed24 months. The calibration of the UV-A irradiation meter shall be carried out with monochromatic radiation at awavelength of 365 nm. Maintenance of or damage to the met

39、er shall necessitate verification.When detachable sensors and readout units are used, verification shall be carried out on the entire system (readoutunit and sensors).The verification shall be documented by a test certificate, a declaration of conformity or a test report as applicable.ISO 3059:2001(

40、E) ISO 2001 All rights reserved 3Key1 Relative spectral response2 Wavelength lRelative spectral response is the ratio of the response of the sensor to radiation of a given wavelength (l )to the response at 365 nm.The relative spectral response curve for a suitable sensor shall not enter the shaded a

41、rea. A, B, C and Din 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 response shall occur between 355 nm and 375 nm;C The relative spectral response at a wavelength of 313 nm

42、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 response of UV-A irradiation metersISO 3059:2001(E) 4 ISO 2001 All rights reservedAnnex ZZ (normative) Corr

43、esponding International and European Standards for which equivalents are not given in the text At the time of publication of this International Standard, the edition of the following document was valid. Members of ISO and IEC maintain registers of currently valid International Standards. EN 473 ISO 9712:1999, Non-destructive testing Qualification and certification of personnel. Standards South AfricaThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .