IEC/IEEE 60780-323:2016

IEC/IEEE 60780-323 ®
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear facilities – Electrical equipment important to safety – Qualification

Installations nucléaires – Equipements électriques importants pour la sûreté –
Qualification
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IEC/IEEE 60780-323 ®
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear facilities – Electrical equipment important to safety – Qualification

Installations nucléaires – Equipements électriques importants pour la sûreté –

Qualification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-3168-5

– 2 – IEC/IEEE 60780-323:2016
© IEC/IEEE 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope and object . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Symbols and abbreviations . 12
5 Principles of equipment qualification . 12
5.1 Qualification objective . 12
5.2 Qualified life and qualified condition . 13
5.3 Qualification elements . 13
5.4 Qualification documentation . 13
6 Qualification methods . 14
6.1 Initial qualification . 14
6.1.1 Type testing . 14
6.1.2 Operating experience . 14
6.1.3 Analysis . 14
6.1.4 Combined methods . 14
6.2 Reassessing qualified life . 14
6.2.1 General . 14
6.2.2 Method 1: Using conservatism . 15
6.2.3 Method 2: Type test on aged samples from the plant . 15
6.2.4 Method 3: Performing type test for longer qualified life . 15
6.2.5 Method 4: Component replacement . 15
6.3 Condition monitoring . 15
7 Qualification program . 16
7.1 General . 16
7.2 Equipment specification. 16
7.2.1 General . 16
7.2.2 Equipment identification . 16
7.2.3 Interfaces . 16
7.2.4 Qualified life objective . 17
7.2.5 Safety function(s) . 17
7.2.6 Service conditions . 17
7.3 Qualification programme plan . 18
7.3.1 General . 18
7.3.2 Ageing . 18
7.3.3 Significant ageing mechanisms . 18
7.3.4 Qualified life objective . 19
7.3.5 Service condition margin . 19
7.3.6 Maintenance . 19
7.3.7 Acceptance criteria . 19
7.4 Qualification programme implementation . 19
7.4.1 Type testing . 19
7.4.2 Operating experience . 25
7.4.3 Qualification with analysis . 26

© IEC/IEEE 2016
7.4.4 Modifications. 27
8 Documentation . 27
8.1 General . 27
8.2 General documentation requirements . 27
8.3 Specific documentation requirements for mild environment . 28
8.4 Specific documentation requirements for harsh environment . 28
Bibliography . 29

Table 1 – Minimal test margins recommended for DBEs . 21

– 4 – IEC/IEEE 60780-323:2016
© IEC/IEEE 2016
NUCLEAR FACILITIES – ELECTRICAL EQUIPMENT
IMPORTANT TO SAFETY – QUALIFICATION

FOREWORD
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