ISO INTERNATIONAL STANDARD 3059 Third edition 2012-12-01 Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditions Essais non destructifs - Controles par ressuage et controles par magnetoscopie Moyens de verification des conditions d'observation Reference number ISO 3059:2012(E) Copyright International Organization for Standardization @ ISO 2012 领翼国际无损检测学校--专注NDT人员国际认证 最新培训计划，点击网址：www.ly-ndt.com ISO 3059:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland Copyright International Organization for Standardization @ ISO 2012 -All rights reserved ISO3059:2012(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEc 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 % 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. 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 cancels and replaces the second edition (is0 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 verification period of irradiation and illuminance meters to 12 months; an editorial review of the text. ili CopyightInternatinalgazadardizalghtsreeved 领翼国际无损检测学校--专注NDT人员国际认证，最新培训计划，点击网址：www.ly-ndt.com