1、 IEC 60544-5 Edition 2.0 2011-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulating materials Determination of the effects of ionizing radiation Part 5: Procedures for assessment of ageing in service Matriaux isolants lectriques Dtermination des effets des rayonnements ionisants Parti
2、e 5: Procdures pour lestimation du vieillissement en service IEC60544-5:2011 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any me
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16、aires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60544-5 Edition 2.0 2011-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulating materials Determination of th
17、e effects of ionizing radiation Part 5: Procedures for assessment of ageing in service Matriaux isolants lectriques Dtermination des effets des rayonnements ionisants Partie 5: Procdures pour lestimation du vieillissement en service INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQ
18、UE INTERNATIONALE S ICS 17.240; 29.035.01 PRICE CODE CODE PRIX ISBN 978-2-88912-836-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colourinside 2 60544-5 IEC:2011 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope and
19、 object 6 2 Normative references . 6 3 Terms and definitions . 7 4 Background 7 4.1 General . 7 4.2 Diffusion limited oxidation (DLO) . 7 4.3 Dose rate effects (DRE) 8 4.4 Accelerated radiation ageing . 8 4.5 Accelerated thermal ageing . 9 5 Approaches to ageing assessment . 9 6 Identifying componen
20、ts of concern . 9 6.1 General . 9 6.2 Priorities for ageing management 9 6.3 Environmental monitoring 10 6.4 Localized severe environments . 10 6.5 Worst case components 10 7 Condition monitoring techniques . 10 7.1 General . 10 7.2 Establishing correlation curves for CM methods 11 7.3 CM methods 11
21、 7.4 Using CM for short-term troubleshooting . 11 7.5 Using CM for long-term degradation assessment . 13 8 Predictive modelling . 14 9 Sample deposit . 15 9.1 General . 15 9.2 Requirements of a deposit . 15 9.3 Pre-ageing samples for a deposit 15 9.4 Installation of an sample deposit . 15 9.5 Testin
22、g of samples from the deposit 16 9.6 Determination of sampling intervals . 16 9.7 Real time aged materials . 17 Annex A (informative) Example of a CM correlation curve 18 Annex B (informative) Use of a deposit 19 Bibliography 20 Figure 1 Development of ageing data on changes in tensile elongation an
23、d a condition indicator (e.g. indenter modulus) Schematic 12 Figure 2 Correlation curve derived from data in Figure 1 Schematic 13 Figure 3 Estimation of elongation from a correlation curve . 14 Figure 4 Modification of sampling interval dependent on values of the CM indicator . 17 Figure A.1 Correl
24、ation curve for indenter modulus against tensile elongation for a CSPE cable jacket material 18 18 60544-5 IEC:2011 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSULATING MATERIALS DETERMINATION OF THE EFFECTS OF IONIZING RADIATION Part 5: Procedures for assessment of ageing in service
25、FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the
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34、ation, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibil
35、ity that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60544-5 has been prepared IEC technical committee TC 112: Evaluation and qualification of electrical
36、insulating materials and systems. This second edition cancels and replaces the first edition, published in 2003, and constitutes an editorial revision to align it with standards recently developed by SC 45A as well as with other parts in the IEC 60544 series. The text of this standard is based on th
37、e following documents: CDV Report on voting 112/171/CDV 112/191/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. 4 60544-5 IEC:2011 This publication has been drafted in accordance with the ISO/IEC Directives, Part
38、 2. A list of all parts in the IEC 60544 series, published under the general title Electrical insulating materials Determination of the effects of ionizing radiation, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stab
39、ility date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indi
40、cates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 60544-5 IEC:2011 5 INTRODUCTION Organic and polymeric materials provide a significant proportion of the insulation used i
41、n electrical systems. These materials are sensitive to the effects of irradiation and the response varies widely between different types. It is therefore important to be able to assess the degree of degradation of these insulating materials during their service lifetimes. This part of IEC 60544 prov
42、ides recommended procedures for assessing ageing of insulating materials in service. There are a number of approaches to the assessment of ageing of polymer-based components exposed to radiation environments 141. These are based on the better understanding of the factors affecting ageing degradation
43、 which has been developed over several decades. In nuclear power plants, qualification programmes are normally used for selection of components, including those based on polymeric materials. These initial qualification procedures, such as IEEE-323 5 and IEEE-383 6, were originally written before the
44、re was sufficient understanding of ageing mechanisms. Most of the methods discussed in this part of IEC 60544 are therefore used to supplement the initial qualification process. This part is the fifth in a series dealing with the effect of ionizing radiation on insulating materials. Part 1 (Radiatio
45、n interaction and dosimetry) constitutes an introduction dealing very broadly with the problems involved in evaluating radiation effects. It also provides guidance to dosimetry terminology, several methods of determining exposure and absorbed dose, and methods of calculating absorbed dose in any spe
46、cific material from the dosimetry method applied. Part 2 (Procedures for irradiation and test) describes procedures for maintaining seven different types of exposure conditions during irradiation. It also specifies the controls that should be maintained over these conditions so that when test result
47、s are reported, reliable comparisons of material performance can be made. In addition, it defines certain important irradiation conditions and test procedures to be used for property change determinations and corresponding end-point criteria. Part 3 has been incorporated into the second edition of I
48、EC 60544-2. Part 4 (Classification system for service in radiation environments) provides a recommended classification system for categorizing the radiation endurance of insulation materials. _ 1Figures in square brackets refer to the bibliography. 6 60544-5 IEC:2011 ELECTRICAL INSULATING MATERIALS
49、DETERMINATION OF THE EFFECTS OF IONIZING RADIATION Part 5: Procedures for assessment of ageing in service 1 Scope and object This part of IEC 60544 covers ageing assessment methods which can be applied to components based on polymeric materials (e.g. cable insulation and jackets, elastomeric seals, polymeric coatings, gaiters) which are used in environments where they are exposed to ra
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