IEC 60544-1:2013

Electrical insulating materials - Determination of the effects of ionizing radiation - Part 1: Radiation interaction and dosimetry

IEC 60544-1:2013 deals broadly with the aspects to be considered in evaluating the effects of ionizing radiation on all types of organic insulating materials. It also provides, for X-rays, gamma-rays, and electrons, a guide to dosimetry terminology, methods for dose measurements, testing carried out at irradiation facilities, evaluation and testing of material characteristics and properties, documenting the irradiation process. This edition includes the following significant technical changes with respect to the previous edition:
a) recent advances in simulation methods of radiation interaction with different matter enables the prediction of the energy-deposition profile in matter and design the irradiation procedure;
b) many new dosimetry systems have become available.

Matériaux isolants électriques - Détermination des effets des rayonnements ionisants - Partie 1: Interaction des rayonnements et dosimétrie

La CEI 60544-1:2013 traite de manière générale des aspects à envisager lors de l'évaluation des effets des rayonnements ionisants sur tous les types de matériaux isolants organiques. Elle fournit également pour les rayons X, les rayonnement gamma et les électrons, un guide de terminologie en dosimétrie, des méthodes de mesure des doses, des essais réalisés au niveau des dispositifs d'irradiation, relatif à l'évaluation et aux essais des caractéristiques et propriétés des matériaux, de documentation du phénomène d'irradiation. Cette édition inclut les changements techniques majeurs suivants par rapport à l'édition précédente:
a) des avancées récentes au niveau des méthodes de simulation de l'interaction des rayonnements avec des types de matière différents permettent de prédire le profil de dépôt d'énergie dans la matière et de concevoir la procédure d'irradiation;
b) de nombreux nouveaux systèmes de dosimétrie sont actuellement disponibles.

General Information

• Status: Published
• Publication Date: 26-Jun-2013
• 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: PPUB - Publication issued
• Start Date: 31-Jul-2013
• Completion Date: 27-Jun-2013

Standards Content (Sample)

IEC 60544-1 ®
Edition 3.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical insulating materials – Determination of the effects of ionizing
radiation –
Part 1: Radiation interaction and dosimetry

Matériaux isolants électriques – Détermination des effets des rayonnements
ionisants –
Partie 1: Interaction des rayonnements et dosimétrie

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IEC 60544-1 ®
Edition 3.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical insulating materials – Determination of the effects of ionizing

radiation –
Part 1: Radiation interaction and dosimetry

Matériaux isolants électriques – Détermination des effets des rayonnements

ionisants –
Partie 1: Interaction des rayonnements et dosimétrie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 17.240; 29.035.01 ISBN 978-2-83220-894-6

– 2 – 60544-1 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Radiation-induced changes and their evaluation . 9
4.1 General . 9
4.2 Permanent changes . 9
4.3 Environmental conditions and material geometry . 9
4.4 Post-irradiation effects . 9
4.5 Temporary effects . 9
5 Facilities for irradiation of material samples for evaluation of properties . 10
5.1 General . 10
5.2 Gamma-ray irradiators . 10
5.3 Electron-beam irradiators . 10
5.4 X-ray (Bremsstrahlung) irradiators . 11
6 Dosimetry methods . 11
6.1 General . 11
6.2 Absolute dosimetry methods . 12
6.2.1 Gamma-rays . 12
6.2.2 Electron beams . 12
6.3 Dosimetry systems . 12
6.3.1 Reference standard dosimetry systems . 12
6.3.2 Routine dosimetry systems . 13
6.3.3 Measurement uncertainty . 14
6.3.4 Dosimeter calibration . 15
6.3.5 Dosimeter selection . 15
7 Characterization of irradiation facilities . 16
8 Dose mapping of samples for test . 16
8.1 Charged particle equilibrium . 16
8.2 Depth-dose distribution (limitations) . 16
9 Monitoring of the irradiation . 17
Annex A (informative) Radiation chemical aspects in interaction and dosimetry . 18
Bibliography . 31

Figure A.1 – Absorbed dose as a function of thickness . 19
Figure A.2 – Absorber thickness for charged-particle equilibrium as a function of
23 -3
energy for a material with an electron density of 3,3 × 10 cm (water). 20
Figure A.3 – Thickness of water (1 g/cm ) as a function of photon energy for a given
attenuation of unidirectional X-ray or γ-ray radiation . 21
Figure A.4 – Typical depth-dose distribution in a homogeneous material obtained with
electron accelerators for radiation processing . 25
Figure A.5 – Example of calculated results of energy deposition function, I(z′), for a
slab layer of polyethylene exposed to 1 MeV electron . 25
Figure A.6 – Example of calculated results of energy deposition function, I(z′), for
typical organic insulators exposed to 1 MeV electron . 26

60544-1 © IEC:2013 – 3 –
Figure A.7 – Two methods of arranging the irradiation samples in order to take into
account the typical depth-dose distributions . 27
Figure A.8 – Methods of arranging the irradiation samples for measuring electron
depth-dose distributions with a stack of slab insulating materials and wedge-shape
insulating materials . 28
Figure A.9 – Scheme of radiation effects of polymers. 29

Table 1 – Examples of reference standard dosimeters . 13
Table 2 – Examples of routine dosimeter systems . 14
Table A.1 – Electron mass collision stopping powers, S/ρ (MeV cm /g) . 23
Table A.2 – Photon mass energy absorption coefficients, µ /ρ (cm /g) . 24
en
– 4 – 60544-1 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSULATING MATERIALS –
DETERMINATION OF THE EFFECTS OF IONIZING RADIATION –

Part 1: Radiation interaction and dosimetry

FOREWORD
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