oSIST prEN IEC 62566-2:2020

SLOVENSKI STANDARD
oSIST prEN IEC 62566-2:2020
01-september-2020

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

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

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:

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

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

commande importants pour la sûreté - Développement des circuits sicherheitstechnischer Bedeutung – Entwicklung HDL-

intégrés programmés en HDL - Partie 2: Circuits intégrés programmés en programmierter integrierter Schaltkreise - Teil 2: HDL-

HDL pour les systèmes réalisant des fonctions de catégorie B ou C programmierte integrierte Schaltkreise für Systeme, die

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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

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

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

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to prov

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and sha

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

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

IEC/TC 45 "Instrumentation, control and electrical power systems of nuclear facilities"

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

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.

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

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)

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

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

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.

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

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

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

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

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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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

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

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

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