IEC 60544-5:2011

Electrical insulating materials - Determination of the effects of ionizing radiation - Part 5: Procedures for assessment of ageing in service

IEC 60544-5:2011 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 programmes based on condition monitoring (CM), the use of sample deposits in severe environments and sampling of real-time aged components. 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.

Matériaux isolants électriques - Détermination des effets des rayonnements ionisants - Partie 5: Procédures pour l'estimation du vieillissement en service

La CEI 60544-5:2011 couvre les méthodes d'évaluation du vieillissement pouvant être appliquées aux composants à base de matériaux polymères (par exemple, des gaines et isolations de câble, des joints en élastomère, des revêtements polymères, des gaines) qui sont utilisés dans des environnements où ils sont exposés aux rayonnements. L'objet de la présente norme est destiné à fournir des méthodes d'évaluation du vieillissement en service. Les approches examinées dans les articles qui suivent couvrent les programmes d'évaluation de vieillissement fondés sur le contrôle des conditions (CM), l'utilisation de dépôt d'échantillons dans des environnements sévères et l'échantillonnage de composants vieillis en temps réel. Cette deuxième édition annule et remplace la première édition, publiée en 2003, dont elle constitue une éditoriale révisée destinée à aligner ce document avec des normes récemment élaborées au sein du SC 45A, ainsi qu'avec d'autres parites de la série CEI 60544.

General Information

• Status: Published
• Publication Date: 13-Dec-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.240 - Radiation measurements
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 112 - Evaluation and qualification of electrical insulating materials and systems
• Drafting Committee: WG 2 - TC 112/WG 2
• Current Stage: DELPUB - Deleted Publication
• Start Date: 31-Jan-2020
• Completion Date: 17-Jun-2022

Relations

• Revised: IEC 60544-5:2022 - Electrical insulating materials - Determination of the effects of ionizing radiation - Part 5: Procedures for assessment of ageing in service
• Effective Date: 05-Sep-2023
• Revises: IEC 60544-5:2003 - Electrical insulating materials - Determination of the effects of ionizing radiation - Part 5: Procedures for assessment of ageing in service
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60544-5 ®
Edition 2.0 2011-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical insulating materials – Determination of the effects of ionizing
radiation –
Part 5: Procedures for assessment of ageing in service

Matériaux isolants électriques – Détermination des effets des rayonnements
ionisants –
Partie 5: Procédures pour l'estimation du vieillissement en service
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IEC 60544-5 ®
Edition 2.0 2011-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrical insulating materials – Determination of the effects of ionizing
radiation –
Part 5: Procedures for assessment of ageing in service

Matériaux isolants électriques – Détermination des effets des rayonnements
ionisants –
Partie 5: Procédures pour l'estimation du vieillissement en service

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 17.240; 29.035.01 ISBN 978-2-88912-836-5

– 2 – 60544-5  IEC:2011
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and 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 components 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
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 Testing 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 and 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 – Correlation 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

FOREWORD
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International Standard IEC 60544-5 has been prepared IEC technical committee TC 112:
Evaluation and qualification of electrical 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 the following documents:
CDV Report on voting
112/171/CDV 112/1
...