IEC/IEEE 62582-2:2022

IEC/IEEE 62582-2 ®
Edition 2.0 2022-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Nuclear power plants – Instrumentation and control important to safety –
Electrical equipment condition monitoring methods –
Part 2: Indenter modulus measurements

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IEC/IEEE 62582-2 ®
Edition 2.0 2022-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Nuclear power plants – Instrumentation and control important to safety –
Electrical equipment condition monitoring methods –
Part 2: Indenter modulus measurements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.120.20
ISBN 978-2-8322-6031-9
– 2 – IEC/IEEE 62582-2:2022 RLV
© IEC/IEEE 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
1 Scope and object . 10
2 Normative references . 10
3 Terms and definitions . 10
4 Abbreviated terms and acronyms . 11
5 General description . 11
6 Applicability, reproducibility and complexity . 11
6.1 General . 11
6.2 Applicability . 11
6.3 Reproducibility . 12
6.4 Complexity . 12
7 Measurement procedure . 12
7.1 Stabilisation of the polymeric materials . 12
7.2 Sampling and measurement locations . 12
7.3 Conditions for measurement . 13
7.4 Instrumentation . 13
7.5 Calibration and tolerances . 14
7.6 Selection of measurement points . 15
7.7 Selection of probe velocity and maximum force . 15
7.8 Clamping . 15
7.9 Determination of the value of the indenter modulus . 15
7.10 Reporting . 16
Annex A (informative) Examples illustrating factors affecting the variation of the
indenter modulus value . 18
A.1 Example of influence of variability in equipment dimensions and construction . 18
A.2 Examples of temperature dependence . 18
A.3 Examples of effects on the indenter modulus from drying out after high
temperature ageing . 20
Annex B (informative) Example of a measurement report for indenter measurements in
laboratory . 22
Bibliography . 24

Figure 1 – Geometry and dimensions of the profile of the probe tip (truncated cone)
used in the indenter . 14
Figure 2 – Penetration depth for full contact on the tip of the anvil . 14
Figure 3 – Calculation of indenter modulus . 16
Figure A.1 – Example of local variation of indenter modulus due to variation in
equipment dimensions and construction . 18
Figure A.2 – Indenter values measured at different temperatures. 19
Figure A.3 – Normalised indenter mean values . 20
Figure A.4 – Example of change of indenter modulus value in laboratory conditions of
a hygroscopic sample after removal from long-term exposure in a heat chamber . 21
Figure A.5 – Adaptation of a decay curve to the measured indenter modulus values in
Figure A.4 . 21

© IEC/IEEE 2022
Figure B.1 – Example of measured force versus time . 23

Table B.1 – Example of a measurement report for indenter measurements in laboratory . 22

– 4 – IEC/IEEE 62582-2:2022 RLV
© IEC/IEEE 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS – INSTRUMENTATION AND CONTROL
IMPORTANT TO SAFETY – ELECTRICAL EQUIPMENT
CONDITION MONITORING METHODS –

Part 2: Indenter modulus measurements

FOREWORD
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