Nuclear power plants - Instrumentation and control important to safety - Data communication in systems performing category A functions

IEC 61500:2009 establishes requirements for data communication which is used in systems performing category A functions in nuclear power plants. It covers also interface requirements for data communication of equipment performing category A functions with other systems including those performing category B and C functions and functions not important to safety. This second edition is intended to accomplish the following:
- to change the focus from multiplexed data transmission to data communication;
- to restrict the scope to communication in systems performing category A functions.

Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants pour la sûreté - Communication de données dans les systèmes réalisant des fonctions de catégorie A

La CEI 61500:2009 établit des exigences applicables à la communication de données assurée pour des systèmes réalisant des fonctions de catégorie A dans les centrales nucléaires de puissance. Cela comprend aussi les exigences relatives aux interfaces des équipements de communication de données assurant des fonctions de catégorie A, avec les autres systèmes y compris ceux qui assurent des fonctions de catégories B et C, ainsi que des fonctions non importantes pour la sûreté. L'objectif de cette deuxième édition est de:
- modifier le sujet et passer de la transmission multiplexée de données à la communication de données,
- de restreindre le domaine à la communication au sein des systèmes réalisant des fonctions de catégories A.

General Information

Status
Published
Publication Date
27-Oct-2009
Current Stage
DELPUB - Deleted Publication
Completion Date
20-Apr-2018
Ref Project

Relations

Buy Standard

Standard
IEC 61500:2009 - Nuclear power plants - Instrumentation and control important to safety - Data communication in systems performing category A functions Released:10/28/2009
English and French language
30 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC 61500 ®
Edition 2.0 2009-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety – Data
communication in systems performing category A functions

Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Communication de données dans les systèmes
réalisant des fonctions de catégorie A

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by

any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or

IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 61500 ®
Edition 2.0 2009-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety – Data
communication in systems performing category A functions

Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Communication de données dans les systèmes
réalisant des fonctions de catégorie A

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 27.120.20 ISBN 978-2-88910-523-6
– 2 – 61500 © IEC:2009
CONTENTS
FOREWORD.3

INTRODUCTION.5

1 Scope.7

2 Normative references .7

3 Terms and definitions .8

4 Symbols and abbreviations.9

5 General requirements .9

5.1 Principles of selection of data communication techniques and equipment.9
5.2 Functional requirements .9
5.3 Performance requirements .10
5.4 Failure detection .10
5.5 Communication within division.10
5.6 Interfaces to systems of lower importance to safety.10
6 Physical separation and isolation.11
6.1 Electrical isolation .11
6.2 Physical separation .11
7 Functional independence.11
8 Reliability .12
8.1 Self-supervision and failure mitigation .12
8.1.1 Communication error detection .12
8.1.2 Response to failure .12
8.2 Test.12
8.3 Prevention of failures (including CCF) .13
9 Qualification .13
10 Maintenance and modification .14
Bibliography.15

61500 © IEC:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY –

DATA COMMUNICATION IN SYSTEMS PERFORMING

CATEGORY A 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
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
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 61500 has been prepared by subcommittee 45A: Instrumentation
and control of nuclear facilities, of IEC technical committee 45: Nuclear instrumentation.
This second edition cancels and replaces the first edition published in 1996. This edition
constitutes a technical revision.
The revision of the standard is intended to accomplish the following:
• To change the focus from multiplexed data transmission to data communication
• To restrict the scope to communication in systems performing category A functions
• To clarify definitions
• To up-date the reference to new standards published since the first issue.

– 4 – 61500 © IEC:2009
The text of this standard is based on the following documents:

FDIS Report on voting
45A/772/FDIS 45A/783/RVD
Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

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

The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61500 © IEC:2009 – 5 –
INTRODUCTION
a) Technical background, main issues and organization of the standard

The equipment for data communication of on-line plant data can simplify the hardwired cables
connecting distributed systems for instrumentation, control, protection and monitoring needed

for safe Nuclear Power Plants operation. Such communication systems can have advantages

over direct cables, for electrical isolation, for reduction of cable fire loads or other reasons. In

a distributed computer based system, communication equipment is an essential part of the

system. Data communication is usually essential for implementing I&C systems important to

safety in nuclear power plants.

It is intended that the standard be used by operators of NPPs (utilities), manufacturers of data
communication equipment, systems evaluators and by licenso
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.