Nuclear power plants - Instrumentation and control systems important to safety - Development of HDL-programmed integrated circuits - Part 2: HDL-programmed integrated circuits for systems performing category B or C functions

See the scope of IEC 62566-2:2020. Adoption of IEC 62566-2:2020 is to be done without modification.

Kernkraftwerke - Leittechnik für Systeme mit sicherheitstechnischer Bedeutung - Entwicklung HDL-programmierter integrierter Schaltkreise - Teil 2: HDL-programmierte integrierte Schaltkreise für Systeme, die Funktionen der Kategorie B oder C ausführen

Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants pour la sûreté - Développement des circuits intégrés programmés en HDL - Partie 2: Circuits intégrés programmés en HDL pour les systèmes réalisant des fonctions de catégorie B ou C

l'IEC 62566-2:2020 énonce des exigences pour atteindre une haute fiabilité dans les "circuits intégrés programmés en HDL" (HPD) destinés aux systèmes d'I&C des centrales nucléaires de puissance réalisant des fonctions de sûreté de catégorie B ou C telles que définies par l'IEC 61226. La programmation des HPD repose sur des langages de description de matériel (HDL) et des outils logiciels associés. Les HPD sont typiquement basés sur des réseaux de portes programmables sur site (FPGA) vierges ou sur des technologies microélectroniques similaires telles que les réseaux logiques programmables (PLD), les réseaux logiques programmables complexes (CPLD), etc. Les circuits intégrés d'usage général tels que les microprocesseurs ne sont pas des HPD. Le présent document énonce des exigences sur: a) un cycle de vie de HPD dédié concernant chaque phase du développement des HPD, notamment la spécification des exigences, la conception, la réalisation, l'intégration et la validation, ainsi que les activités de vérification associées à chacune des phases; b) la planification et les activités complémentaires telles que la modification et la production; c) le choix des composants prédéveloppés, notamment les technologies microélectroniques et les blocs prédéveloppés (PDB); d) les outils utilisés pour concevoir, réaliser et vérifier les HPD.

Jedrske elektrarne - Merilna in nadzorna oprema za zagotavljanje varnosti - Razvoj HDL-programiranih integriranih vezij - 2. del: HDL-programirana integrirana vezja za sisteme, ki izvajajo funkcije kategorije B ali C (IEC 62566-2:2020)

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Published
Current Stage
6060 - Document made available
Due Date
27-Nov-2020
Completion Date
27-Nov-2020

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SLOVENSKI STANDARD
SIST EN IEC 62566-2:2021
01-januar-2021

Jedrske elektrarne - Merilna in nadzorna oprema za zagotavljanje varnosti - Razvoj

HDL-programiranih integriranih vezij - 2. del: HDL-programirana integrirana vezja

za sisteme, ki izvajajo funkcije kategorije B ali C (IEC 62566-2:2020)
Nuclear power plants - Instrumentation and control systems important to safety -
Development of HDL-programmed integrated circuits - Part 2: HDL-programmed

integrated circuits for systems performing category B or C functions (IEC 62566-2:2020)

Kernkraftwerke – Leittechnik für Systeme mit sicherheitstechnischer Bedeutung –

Entwicklung HDL-programmierter integrierter Schaltkreise - Teil 2: HDL-programmierte

integrierte Schaltkreise für Systeme, die Funktionen der Kategorie B oder C ausführen

(IEC 62566-2:2020)

Centrales nucléaires de puissance – Instrumentation et contrôle-commande importants

pour la sûreté – Développement des circuits intégrés programmés en HDL – Partie 2:

Circuits intégrés programmés en HDL pour les systèmes réalisant des fonctions de
catégorie B ou C (IEC 62566-2:2020)
Ta slovenski standard je istoveten z: EN IEC 62566-2:2020
ICS:
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
31.200 Integrirana vezja, Integrated circuits.
mikroelektronika Microelectronics
SIST EN IEC 62566-2:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 62566-2:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 62566-2:2021
EUROPEAN STANDARD EN IEC 62566-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2020
ICS 27.120.20
English Version
Nuclear power plants - Instrumentation and control systems
important to safety - Development of HDL-programmed
integrated circuits - Part 2: HDL-programmed integrated circuits
for systems performing category B or C functions
(IEC 62566-2:2020)

Centrales nucléaires de puissance - Instrumentation et Kernkraftwerke - Leittechnik für Systeme mit

contrôle-commande importants pour la sûreté - sicherheitstechnischer Bedeutung - Entwicklung HDL-

Développement des circuits intégrés programmés en HDL - programmierter integrierter Schaltkreise - Teil 2: HDL-

Partie 2: Circuits intégrés programmés en HDL pour les programmierte integrierte Schaltkreise für Systeme, die

systèmes réalisant des fonctions de catégorie B ou C Funktionen der Kategorie B oder C ausführen

(IEC 62566-2:2020) (IEC 62566-2:2020)

This European Standard was approved by CENELEC on 2020-11-16. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62566-2:2020 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62566-2:2021
EN IEC 62566-2:2020 (E)
European foreword

This document (EN IEC 62566-2:2020) consists of the text of document IEC 62566-2:2020, prepared by

IEC/SC 45A "Instrumentation and control of nuclear facilities" of IEC/TC 45 "Nuclear instrumentation".

The following dates are fixed:
• latest date by which this document has to be (dop) 2021-11-16
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) 2023-11-16
conflicting with this document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

As stated in the nuclear safety directive 2009/71/EURATOM, Chapter 1, Article 2, item 2, Member States

are not prevented from taking more stringent safety measures in the subject-matter covered by the

Directive, in compliance with Community law.

In a similar manner, this European standard does not prevent Member States from taking more stringent

nuclear safety and/or security measures in the subject-matter covered by this standard.

Endorsement notice

The text of the International Standard IEC 62566-2:2020 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC/IEEE 60780-323:2016 NOTE Harmonized as EN 60780-323:2017 (not modified)
IEC 61508-1:2010 NOTE Harmonized as EN 61508-1:2010 (not modified)
IEC 61508-2:2010 NOTE Harmonized as EN 61508-2:2010 (not modified)
IEC 61508-3:2010 NOTE Harmonized as EN 61508-3:2010 (not modified)
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010 (not modified)
IEC 62645 NOTE Harmonized as EN IEC 62645
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SIST EN IEC 62566-2:2021
EN IEC 62566-2:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60880 2006 Nuclear power plants - Instrumentation and EN 60880 2009
control systems important to safety -
Software aspects for computer-based
systems performing category A functions
IEC 60987 - Nuclear power plants - Instrumentation and EN 60987 -
control important to safety - Hardware
design requirements for computer-based
systems
IEC 61226 - Nuclear power plants - Instrumentation and EN 61226 -
control important to safety - Classification of
instrumentation and control functions
IEC 61513 2011 Nuclear power plants - Instrumentation and EN 61513 2013
control important to safety - General
requirements for systems
IEC 62138 2018 Nuclear power plants - Instrumentation and EN IEC 62138 2019
control systems important to safety -
Software aspects for computer-based
systems performing category B or C
functions
IEC 62340 - Nuclear power plants - Instrumentation and EN 62340 -
control systems important to safety -
Requirements for coping with common
cause failure (CCF)
IEC 62566 2012 Nuclear power plants - Instrumentation and EN 62566 2014
control important to safety - Development of
HDL-programmed integrated circuits for
systems performing category A functions
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SIST EN IEC 62566-2:2021
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SIST EN IEC 62566-2:2021
IEC 62566-2
Edition 1.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Development of HDL-programmed integrated circuits –
Part 2: HDL-programmed integrated circuits for systems performing
category B or C functions
Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Développement des circuits intégrés programmés
en HDL –
Partie 2: Circuits intégrés programmés en HDL pour les systèmes réalisant
des fonctions de catégorie B ou C
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-8032-4

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 62566-2:2021
– 2 – IEC 62566-2:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope ............................................................................................................................ 10

2 Normative references .................................................................................................... 11

3 Terms and definitions .................................................................................................... 11

4 Symbols and abbreviated terms ..................................................................................... 18

5 General requirements for HPD projects ......................................................................... 19

5.1 General ................................................................................................................. 19

5.2 Life-cycle .............................................................................................................. 19

5.3 Gradation principals .............................................................................................. 21

5.4 HPD quality assurance .......................................................................................... 22

5.4.1 General ......................................................................................................... 22

5.5 Configuration management ................................................................................... 23

5.5.1 General ......................................................................................................... 23

5.6 HPD Verification ................................................................................................... 23

6 HPD requirements specification ..................................................................................... 24

6.1 General ................................................................................................................. 24

6.1.1 Overview ....................................................................................................... 24

6.2 Functional aspects of the requirements specification ............................................ 25

6.2.1 General ......................................................................................................... 25

6.3 Fault detection and fault tolerance ........................................................................ 26

6.4 Requirements capture using Electronic System Level tools ................................... 26

6.4.1 General ......................................................................................................... 26

6.4.2 Requirements on the formalism of tools used at ESL level ............................. 27

6.4.3 Interface with design tools ............................................................................. 27

7 Acceptance process for programmable integrated circuits, native blocks and Pre-

Developed Blocks .......................................................................................................... 27

7.1 General ................................................................................................................. 27

7.2 Acceptance process for programmable integrated circuits and included

native blocks ......................................................................................................... 27

7.2.1 General ......................................................................................................... 27

7.2.2 Integrated Circuit acceptance ........................................................................ 28

7.3 Acceptance process for PDBs ............................................................................... 29

7.3.1 General ......................................................................................................... 29

7.3.2 PDB functional suitability ............................................................................... 29

7.3.3 Documentation for safety of PDBs ................................................................. 30

7.3.4 Generation of supporting documentation for safety ........................................ 30

7.3.5 Complementary means .................................................................................. 32

7.3.6 Rules of use .................................................................................................. 32

7.3.7 Modification for acceptance ........................................................................... 33

8 HPD design and implementation .................................................................................... 33

8.1 General ................................................................................................................. 33

8.2 Hardware Description Languages (HDL) and related tools .................................... 33

8.2.1 General ......................................................................................................... 33

8.3 Design .................................................................................................................. 33

8.3.1 General ......................................................................................................... 33

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SIST EN IEC 62566-2:2021
IEC 62566-2:2020 © IEC 2020 – 3 –

8.3.2 Fault detection ............................................................................................... 35

8.3.3 Language and coding rules ............................................................................ 35

8.3.4 Synchronous vs. asynchronous design .......................................................... 36

8.3.5 Power Management ....................................................................................... 37

8.3.6 Design documentation ................................................................................... 37

8.4 Implementation ..................................................................................................... 37

8.4.1 Products ........................................................................................................ 37

8.4.2 Files of parameters and constraints ............................................................... 37

8.4.3 Post-route analyses ....................................................................................... 37

8.4.4 Redundancies introduced or removed by the tools ......................................... 38

8.4.5 Finite state machines ..................................................................................... 38

8.4.6 Static Timing Analysis ................................................................................... 38

8.4.7 Implementation documentation ...................................................................... 38

8.5 System level tools and automated code generation ............................................... 39

8.5.1 General ......................................................................................................... 39

9 HPD integration and testing ........................................................................................... 39

9.1 General ................................................................................................................. 39

9.2 Test-benches for HPD functional simulation .......................................................... 40

9.3 Test coverage ....................................................................................................... 40

9.4 Test execution ...................................................................................................... 41

10 HPD aspects of system integration ................................................................................ 41

10.1 General ................................................................................................................. 41

10.2 Requirements ....................................................................................................... 41

11 HPD aspects of system validation .................................................................................. 42

11.1 General ................................................................................................................. 42

11.2 Requirements ....................................................................................................... 42

12 Modification ................................................................................................................... 43

12.1 Modification of the requirements, design or implementation .................................. 43

12.1.1 General ......................................................................................................... 43

12.2 Modification of the micro-electronic technology ..................................................... 45

13 HPD production ............................................................................................................. 45

13.1 General ................................................................................................................. 45

13.2 Production tests .................................................................................................... 45

13.3 Programming files and programming activities ...................................................... 45

14 HPD aspects of installation, commissioning and operation ............................................. 46

14.1 General ................................................................................................................. 46

14.1.1 Overview ....................................................................................................... 46

14.2 Anomaly reports .................................................................................................... 46

15 Software tools for the development of HPDs .................................................................. 46

15.1 General ................................................................................................................. 46

15.1.1 Overview ....................................................................................................... 46

15.2 Additional requirements for design, implementation and simulation tools .............. 47

16 Design segmentation or partitioning ............................................................................... 48

16.1 Background........................................................................................................... 48

16.2 Auxiliary or support functions ................................................................................ 48

16.2.1 General ......................................................................................................... 48

16.2.2 Partitioning of auxiliary or support functions or functions of an inferior

safety category .............................................................................................. 48

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SIST EN IEC 62566-2:2021
– 4 – IEC 62566-2:2020 © IEC 2020

17 Defences against HPD Common Cause Failure ............................................................. 49

Annex A (informative) Documentation .................................................................................. 50

A.1 General ................................................................................................................. 50

A.2 Project .................................................................................................................. 50

A.3 HPD requirement specification .............................................................................. 50

A.4 Acceptance of blank integrated circuits, Native Blocks and PDBs ......................... 50

A.5 HPD design and implementation ........................................................................... 50

A.6 HPD integration and testing .................................................................................. 51

A.7 HPD aspects of system integration........................................................................ 51

A.8 HPD aspects of system validation ......................................................................... 51

A.9 Modification .......................................................................................................... 51

A.10 HPD production .................................................................................................... 51

A.11 Software tools for the development of HPDs ......................................................... 51

Annex B (informative) Development of HPDs ....................................................................... 52

B.1 General ................................................................................................................. 52

B.2 Optional capture of requirements at Electronic System Level ................................ 52

B.3 HPD and system life-cycle .................................................................................... 52

B.4 Design .................................................................................................................. 53

B.5 Acceptance process for programmable integrated circuits, native blocks and

Pre-Developed Blocks ........................................................................................... 54

B.6 Implementation ..................................................................................................... 54

B.7 HPD integration and testing .................................................................................. 55

B.8 Types of specific integrated circuits ...................................................................... 55

B.8.1 General ......................................................................................................... 55

B.8.2 PAL (Programmable Array Logic) ................................................................... 56

B.8.3 PLD, CPLD (Programmable Logic Device, Complex PLD) .............................. 56

B.8.4 FPGA ............................................................................................................ 56

B.8.5 Gate Array, or pre-diffused integrated circuit ................................................. 57

B.8.6 Standard Cells ............................................................................................... 57

B.8.7 “Full custom ASIC”, or “raw ASIC” ................................................................. 57

Bibliography .......................................................................................................................... 58

Figure 1 – System life-cycle (informative, as defined by IEC 61513) ..................................... 20

Figure 2 – HPD life-cycle ...................................................................................................... 21

Figure 3 – Overview of selection and acceptance process for blank Integrated Circuits

and native blocks .................................................................................................................. 28

Figure 4 – Overview of selection and acceptance process for PDBs ..................................... 29

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SIST EN IEC 62566-2:2021
IEC 62566-2:2020 © IEC 2020 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY –
DEVELOPMENT OF HDL-PROGRAMMED INTEGRATED CIRCUITS –
Part 2: HDL-programmed integrated circuits
for systems performing category B or C functions
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 Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

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6) All users should ensure that they have the latest edition of this publication.

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members of its technical committees and IEC National Committees for any personal injury, property damage or

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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62566-2 has been prepared by subcommittee 45A: Instrumentation,

control and electrical power systems of nuclear facilities, of IEC technical committee 45: Nuclear

instrumentation.
The text of this International Standard is based on the following documents:
FDIS Report on voting
45A/1304/FDIS 45A/1314/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 11 ----------------------
SIST EN IEC 62566-2:2021
– 6 – IEC 62566-2:2020 © IEC 2020

A list of all parts in the IEC 62566 series, published under the general title Nuclear power plants

– Instrumentation and control important to safety – Development of HDL-programmed

integrated circuits, can be found on the IEC website.
In this document, the following print types are used:

– Requirements and recommendations applicable specifically to class 3 or to class 2 systems

appear in italics.
The committee has decided that the contents of this do
...

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