LEC >IEEE TEC/IEEE60980-344 Edition 1.02020-10 INTERNATIONAL STANDARD Nuclear facilities - Equipment important to safety - Seismic qualification IEC/IEEE60980-344:2020-10(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2020 IEC, Geneva, Switzerland Copyright @ 2020 IEEE 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 being secured. Requests for permission to reproduce should be addressed to either IEC at the address below or IEC's member National Committee in the country of the requester or from IEEE. IEC Central Office Institute of Electrical and Electronics Engineers, Inc. 3, rue de Varembé 3 Park Avenue New York, NY 10016-5997 CH-1211Geneva 20 Switzerland United Statesof America Tel.: +4122 919 02 11
[email protected] [email protected] www.ieee.org www.iec.ch About theIEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About the IEEE IEEE is the world's largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications, conferences, technology standards, and professional and educational activities. AboutIEC/IEEEpublications that you havethe latest edition,a corrigendum oran amendment might have been published. IECpublicationssearch-webstore.iec.ch/advsearchform Electropedia-www.electropedia.org The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology. variety of criteria (reference number, text,technical containing more than 22 000 terminological entries in English and French, with equivalent terms in 16 additional languages. committee,...). It also gives information on projects, replaced Also known as the International Electrotechnical Vocabulary and withdrawn publications. (IEV) online. IECJustPublished-webstore.iec.ch/justpublished IEc Glossary - std.iec.ch/glossary Stay up to date on all new IEC publications. Just Published 67 000 electrotechnical terminology entries in English and details all new publications released.Available online and once a month by email. French extracted from the Terms and definitions clause of IECpublicationsissuedbetween2002and 2015.Some IECCustomerServiceCentre-webstore.iec.ch/csc entries have been collected from earlier publications of IEC If you wish to give us your feedback on this publication or TC 37, 77, 86 and CISPR. need further assistance, please contact the Customer Service Centre:
[email protected]. LEC >IEEE IEC/IEEE60980-344 Edition 1.02020-10 INTERNATIONAL STANDARD Nuclear facilities - Equipment important to safety - Seismic qualification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.120.10; 27.120.20 ISBN 978-2-8322-8482-7 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered trademark of the International Electrotechnical Commission