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BS EN IEC 60544-5:2022

BS EN IEC 60544-5:2022

$142.49

Electrical insulating materials. Determination of the effects of ionizing radiation – Procedures for assessment of ageing in service

Published By Publication Date Number of Pages
BSI 2022 30
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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 radiation. The object of this standard is aimed at providing methods for the assessment of ageing in service. The approaches discussed in the following clauses cover ageing assessment programs based on condition monitoring (CM), the use of sample deposits in severe environments and sampling of real-time aged components.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
13 4 Background
4.1 General
4.2 Diffusion-limited oxidation (DLO)
14 4.3 Dose rate effects (DRE)
4.4 Accelerated radiation ageing
4.5 Accelerated thermal ageing
15 5 Approaches to ageing assessment
6 Identifying components of concern
6.1 General
6.2 Priorities for ageing management
6.3 Environmental monitoring
16 6.4 Localized severe environments
6.5 Worst case components
7 Condition monitoring techniques
7.1 General
7.2 Establishing correlation curves for CM methods
17 7.3 CM methods
7.4 Using CM for short-term troubleshooting
18 Figure 1 – Development of ageing data on changes in tensile elongation and a condition indicator (e.g. indenter modulus) – Schematic representation
19 7.5 Using CM for long-term degradation assessment
Figure 2 – Correlation curve derived from data in Figure 1 – Schematic representation
20 8 Predictive modelling
Figure 3 – Estimation of elongation from a correlation curve
21 9 Sample deposit
9.1 General
9.2 Requirements of a deposit
9.3 Pre-ageing samples for a deposit
22 9.4 Installation of a sample deposit
9.5 Testing of samples from the deposit
9.6 Determination of sampling intervals
23 9.7 Real time aged materials
Figure 4 – Modification of sampling interval dependent on values of the CM indicator – Schematic representation
24 Annex A (informative) Example of a CM correlation curve
Figure A.1 – Correlation curve for indenter modulus against tensile elongation for a CSPE cable jacket material [24]
25 Annex B (informative) Use of a deposit
B.1 Typical sample in a deposit
B.2 Typical testing schedule for a deposit
26 Bibliography

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BS EN IEC 60544-5:2022
$142.49