EN 61839:2014

SLOVENSKI STANDARD
01-oktober-2014
Jedrske elektrarne - Zasnova prostorov za vodenje - Analiza in dodeljevanje
funkcij (IEC 61839:2000)
Nuclear power plants - Design of control rooms - Functional analysis and assignment
Kernkraftwerke - Auslegung von Warten - Analyse und Zuordnung der Funktionen
Centrales nucléaires de puissance - Conception des salles de commande - Analyse
fonctionnelle et affectation des fonctions
Ta slovenski standard je istoveten z: EN 61839:2014
ICS:
25.040.99 Drugi sistemi za Other industrial automation
avtomatizacijo v industriji systems
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61839
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 27.120.20; 29.120.10
English Version
Nuclear power plants - Design of control rooms - Functional
analysis and assignment
(IEC 61839:2000)
Centrales nucléaires de puissance - Conception des salles Kernkraftwerke - Auslegung von Warten - Analyse und
de commande - Analyse fonctionnelle et affectation des Zuordnung der Funktionen
fonctions (IEC 61839:2000)
(CEI 61839:2000)
This European Standard was approved by CENELEC on 2014-08-04. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61839:2014 E
Foreword
This document (EN 61839:2014) consists of the text of IEC 61839:2000 prepared by SC 45A
"Instrumentation, control and electrical systems of nuclear facilities" of IEC/TC 45 "Nuclear
instrumentation".
The following dates are fixed:
– latest date by which this document has to be implemented (dop) 2015-08-04
at national level by publication of an identical
national standard or by endorsement
– latest date by which the national standards conflicting (dow) 2017-08-04
with this document have to be withdrawn

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 measures in the subject-matter
covered by this standard.
Endorsement notice
The text of the International Standard IEC 61839:2000 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61839:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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
1)
IEC 60964 1989 Design for control rooms of nuclear power - -
plants
IEC 61771 1995 Nuclear power plants - Main control-room - - -
Verification and validation of design

1) IEC 60964 is superseded by IEC 60964:2009, which is harmonized as EN 60964:2010.

NORME CEI
INTERNATIONALE IEC
INTERNATIONAL
Première édition
STANDARD
First edition
2000-07
Centrales nucléaires de puissance –
Conception des salles de commande –
Analyse fonctionnelle et affectation des fonctions
Nuclear power plants –
Design of control rooms –
Functional analysis and assignment
 IEC 2000 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
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PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61839  IEC:2000 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 Scope and object . 7
2 Normative references. 7
3 Definitions. 7
4 Process of functional analysis and assignment . 9
4.1 General description. 9
4.1.1 Functional analysis . 9
4.1.2 Assignment of functions . 11
4.2 Basic technical team for FA and A . 11
5 Functional analysis . 13
5.1 General. 13
5.2 Identification of functions . 13
5.3 Identification of basic information and processing requirements. 15
5.3.1 Individual function analysis . 15
5.3.2 Identification of time requirements and representative events . 17
6 Assignment of functions . 19
6.1 General. 19
6.2 Control function analysis. 19
6.2.1 Identifying functional units. 19
6.2.2 Characterising the control functions . 19
6.2.3 Identifying control function characteristics measurements . 21
6.3 Development of assignment criteria . 21
6.3.1 Characteristic measurement and man-machine capabilities. 23
6.3.2 National law, national and international legal rules and guides. 27
6.3.3 Utility and vendors' rules and policies . 27
6.4 Assignment process. 27
Annex A (informative) Examples of decomposition of goals and subgoals . 35
Annex B (informative) Beginning of PWR (pressurized water reactor) functional analysis . 37
Bibliography . 39
Figure 1 – Illustrated FA and A activities given in IEC 60964. 31
Table 1 – Humans and machines in the functional domain and in the physical domain . 33
Table 2 – Assignment of functions to humans and machines – Basic structure . 33

61839  IEC:2000 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
NUCLEAR POWER PLANTS –
DESIGN OF CONTROL ROOMS –
FUNCTIONAL ANALYSIS AND ASSIGNMENT
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61839 has been prepared by subcommittee 45A: Reactor
instrumentation, of IEC technical committee 45: Nuclear instrumentation.
This standard shall be read in conjunction with IEC 60964.
The text of this standard is based on the following documents:
FDIS Report on voting
45A/382/FDIS 45A/389/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 3.
Annexes A and B are for information only.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
61839  IEC:2000 – 7 –
NUCLEAR POWER PLANTS –
DESIGN OF CONTROL ROOMS –
FUNCTIONAL ANALYSIS AND ASSIGNMENT
1 Scope and object
This International Standard specifies functional analysis and assignment procedures (FA
and A, sometimes called allocation of functions) for the design of the control-room system for
nuclear power plants and gives rules for developing criteria for the assignment of functions.
This standard supplements IEC 60964, which applies to the design of the control-room for
nuclear power plants.
The purpose of this standard is to provide specific requirements for carrying out the functional
analysis and assignment required in 3.1 and 3.2 of IEC 60964, and therefore supersedes the
guidance given in A.3.1 and A.3.2 of IEC 60964.
This standard is applicable to the design of new control-rooms or to backfits (design renewal
and design modifications) to existing control-rooms. In the latter case, particular caution is to
be exercised to identify areas indirectly affected as well as those directly affected.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this International Standard. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this International Standard are
...