IEC-61227-2008.pdf

IEC 61227 Edition 2.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Nuclear power plants Control rooms Operator controls Centrales nucléaires de puissance Salles de commande Commandes opérateurs IEC 61227:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright © 2008 IEC, Geneva, Switzerland 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. 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Service Clients: 10H 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: 11H csciec.ch Tél.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61227 Edition 2.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Nuclear power plants Control rooms Operator controls Centrales nucléaires de puissance Salles de commande Commandes opérateurs INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 27.120.20 PRICE CODE CODE PRIX ISBN 2-8318-9732-7 -,-,- 2 61227 © IEC:2008 CONTENTS FOREWORD. 0H 3 INTRODUCTION. 1H 5 1 Scope. 2H 7 2 Normative references . 3H 7 3 Terms and definitions . 4H 7 4 Design principles 5H 8 4.1 Basic concepts 6H 8 4.2 Types of HMI. 7H 9 4.2.1 Discrete controls . 8H 9 4.2.2 Soft controls 9H 9 4.3 Selection of control system 10H 10 5 Design requirements 11H 11 5.1 Individual controls and indicators 12H 11 5.1.1 Control board layout 13H 11 5.1.2 Positioning of groups. 14H 12 5.1.3 Device layout. 15H 12 5.1.4 Uniformity of orientation 16H 13 5.1.5 Mimic diagrams . 17H 13 5.1.6 Coding. 18H 14 5.1.7 Protection against mal-operation of control devices. 19H 15 5.1.8 Compatibility with VDU formats 20H 15 5.2 Soft controls 21H 16 5.2.1 Display devices . 22H 16 5.2.2 Selection displays 23H 17 5.2.3 Input Fields . 24H 17 5.2.4 Input formats . 25H 17 5.2.5 User-System Interaction 26H 17 5.3 Special requirements for touch panels. 27H 18 Annex A (informative) Examples for the arrangement of discrete controls 28H 20 -,-,- 61227 © IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ NUCLEAR POWER PLANTS CONTROL ROOMS OPERATOR CONTROLS 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 61227 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 1993 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) account has been taken of the fact that computer design engineering techniques have advanced significantly in the intervening years; b) alignment of the standard with the new revisions of IAEA documents NS-R-1 and NS-G- 1.3, which includes as far as possible an adaptation of the definitions; c) replacement, as far as possible, of the requirements associated with standards published since the first edition, especially, IEC 60964 (edition 2) and IEC 61772 (edition 2); d) review of the existing requirements and updating of the terminology and definitions. 4 61227 © IEC:2008 The text of this standard is based on the following documents: FDIS Report on voting 45A/694/FDIS 45A/702/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. -,-,- 61227 © IEC:2008 5 INTRODUCTION a) Technical background, main issues and organisation of this standard This IEC standard specifically focuses on operator controls. It is intended that this standard be used by operators of NPPs (utilities), systems evaluators and by licensors. b) Situation of the current standard in the structure of IEC SC 45A standard series IEC 61227 is the third level IEC SC 45A document tackling the generic issue of operator controls. IEC 61227 is to be read in association with IEC 60964 and IEC 61772. IEC 60964 is the appropriate IEC SC 45A chapeau document for control rooms which provides guidance on control room design and which references IEC 61227. IEC 61772 establishes requirements for the application of VDU (Visual Display Units). For more details on the structure of IEC SC 45A standard series, see item d) of this introduction. c) Recommendations and limitations regarding the application of this standard It is important to note that this standard establishes no additional functional requirements for safety systems. To ensure that this standard will continue to be relevant in future years, the emphasis has been placed on issues of principle, rather than specific technologies. d) Description of the structure of the IEC SC 45A standard series and relationships with other IEC documents and other bodies documents (IAEA, ISO) The top-level document of the IEC SC 45A standard series is IEC 61513. It provides general requirements for I b) soft controls. The groups have the following characteristics, and the task analysis described in 4.3 is used to determine the most appropriate type to use. 4.2.1 Discrete controls Dedicated controls have the disadvantage of being present even when not wanted, thus increasing the size of the whole control desk and providing “clutter“ when other controls are in use. Dedicated controls are particularly suitable for controls in constant use, for example electrical output, or those whose immediate accessibility and reliability are of prime importance, for example an emergency trip button. Requirements for their layout are described in 5.1.1. Multiplexed controls, a sub-set of discrete controls, use a single control for the same function on several equipments, thus reducing the number of controls on the desk or panel so that they can be made smaller and the controls can be brought closer to the operator. However, the operator has to make a selection, so the number of operations is increased and the chances of error and the operator response time may be increased. Multiplexed controls shall be designed with good feedback to the operator for the function selected, to permit error recovery. They are particularly suitable for the control of seldom- used systems that are not required in a hurry, for example, tank filling, and for systems where the consequences of error are not serious and where time is available for correction in the event of error. 4.2.2 Soft controls These controls are a type of multiplexed system where they can have different functions at different times. Typically, soft controls are implemented using one (or two) VDUs together with a pointing device (such as mouse, track ball light pen or touch capability), or a combination of a VDU with a set of dedicated controls. Control actions are performed in the following way: selection of the object to be controlled using the pointing device; presentation of the command options on the VDU as menu items or icons, e.g. in a pop- up-window or on a separate VDU; selection and activation of the command option to be executed, again using the pointing device. These systems have many of the characteristics of conventional multiplexed systems, but make it possible to assemble controls related to specific tasks and not offer the operator controls that are invalid or inappropriate to that task, so guiding the operator to correct -,-,- 10 61227 © IEC:2008 actions. All information