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IEC 62671:2013

(Main)

Nuclear power plants - Instrumentation and control important to safety - Selection and use of industrial digital devices of limited functionality

Nuclear power plants - Instrumentation and control important to safety - Selection and use of industrial digital devices of limited functionality

IEC 62671:2013 addresses certain devices that contain embedded software or electronically-configured digital circuits that have not been produced to other IEC Standards which apply to systems and equipment important to safety in nuclear power plants, but which are candidates for use in nuclear power plants. It provides requirements for the selection and evaluation of such devices where they have dedicated, limited, and specific functionality and limited configurability. The contents of the corrigendum of September 2016 have been included in this copy.

Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants pour la sûreté - Sélection et utilisation des appareils numériques à fonctionnalités limitées

La CEI 62671:2013 couvre les appareils qui contiennent des logiciels embarqués ou des circuits numériques configurés électroniquement qui n'ont pas été produits conformément aux normes CEI applicables aux systèmes et équipements importants pour la sûreté des centrales nucléaires de puissance, mais qui sont candidats pour être utilisés dans des centrales nucléaires de puissance. Elle établit des exigences pour le choix et l'évaluation de tels appareils lorsque ceux-ci présentent des fonctionnalités spécifiques, limitées et dédiées et que leur configuration est limitée. Le contenu du corrigendum de septembre 2016 a été pris en considération dans cet exemplaire.

General Information

Status
Published
Publication Date
19-Feb-2013
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
27.120.20 - Nuclear power plants. Safety
Technical Committee
SC 45A - Instrumentation, control and electrical power systems of nuclear facilities
Drafting Committee
WG 7 - TC 45/SC 45A/WG 7
Current Stage
PPUB - Publication issued
Start Date
28-Feb-2013
Completion Date
20-Feb-2013
Ref Project

Relations

Corrected By
IEC 62671:2013/COR1:2016 - Corrigendum 1 - Nuclear power plants - instrumentation and control important to safety - Selection and use of industrial digital devices of limited functionality
Effective Date
05-Sep-2023

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IEC 62671:2013 - Nuclear power plants - Instrumentation and control important to safety - Selection and use of industrial digital devices of limited functionalityIEC 62671:2013 - Nuclear power plants - Instrumentation and control important to safety - Selection and use of industrial digital devices of limited functionality
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IEC 62671:2013 - Nuclear power plants - Instrumentation and control important to safety - Selection and use of industrial digital devices of limited functionality
English and French language
109 pages
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IEC 62671 ®
Edition 1.0 2013-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Selection and use of industrial digital devices of limited functionality

Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Sélection et utilisation des appareils numériques à
fonctionnalités limitées
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IEC 62671 ®
Edition 1.0 2013-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –

Selection and use of industrial digital devices of limited functionality

Centrales nucléaires de puissance – Instrumentation et contrôle-commande

importants pour la sûreté – Sélection et utilisation des appareils numériques à

fonctionnalités limitées
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 27.120.20 ISBN 978-2-83220-630-0

– 2 – 62671 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 9
1.1 General . 9
1.2 Background . 10
1.3 Use of this standard . 10
1.4 Framework . 11
2 Normative references . 12
3 Terms and definitions . 13
4 Symbols and abbreviations . 19
5 General requirements . 19
5.1 General . 19
5.2 Application of this standard . 20
5.2.1 General . 20
5.2.2 Applicability criteria for this standard . 20
5.3 General requirements on the evaluation process . 21
5.3.1 Evaluation process . 21
5.3.2 Evaluation and Application Plan (EAP) . 22
5.3.3 Evaluation and Application Report (EAR) . 23
5.3.4 Application of clauses of this standard . 24
6 Criteria for functional and performance suitability . 25
6.1 General . 25
6.2 Functional competence of the primary function . 25
6.3 Ancillary functions . 26
6.4 Configurability . 26
6.5 Superfluous functions . 27
6.6 Hardware robustness . 28
6.7 Reliability, maintainability and testability . 28
6.8 Cyber security . 30
6.9 User documentation for safety . 30
7 Criteria for dependability – Evidence of correctness . 31
7.1 General . 31
7.2 Previous certification . 33
7.3 Avoidance of systematic faults . 34
7.4 Evidence of quality in the design process . 36
7.4.1 General . 36
7.4.2 Product designer’s QA program . 36
7.4.3 Design and development process . 37
7.4.4 Design configuration management . 38
7.4.5 Design change control . 38
7.4.6 Design documentation . 39
7.5 Evidence of quality in manufacturing . 40
7.6 Product stability . 41
7.7 Operating experience . 42
7.8 Complementary testing and/or analysis (verification) . 43

62671 © IEC:2013 – 3 –
7.9 Documentation improvement . 44
8 Criteria for integration into the application – limits and conditions of use . 45
8.1 General . 45
8.2 Restrictions on use . 45
8.3 Modifications of the device required for the application . 45
8.4 Modifications to the system to accommodate the device . 46
8.5 Integration and commissioning of the device in the plant safety systems . 46
9 Considerations for preserving acceptability . 47
9.1 General . 47
9.2 Notifications by the device designer and manufacturer . 47
9.3 Manufacturing and support lifetime of the current version . 48
9.4 Preservation of maintenance tools and documentation . 48
9.5 Recommendations for the end-user . 48
Annex A (informative) Possible design features of a software system that could impact
the dependability of the device . 50
Bibliography . 52

Figure 1 – Selection and Evaluation Process . 22

– 4 – 62671 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY –
SELECTION AND USE OF INDUSTRIAL
DIGITAL DEVICES OF LIMITED FUNCTIONALITY

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publicati
...

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