EN IEC/IEEE 60980-344:2021

SLOVENSKI STANDARD
01-junij-2021
Jedrski objekti - Oprema, pomembna za varnost - Seizmična (potresna)
kvalifikacija (IEC/IEEE 60980-344:2020)
Nuclear facilities - Equipment important to safety - Seismic qualification (IEC/IEEE 60980
-344:2020)
Kerntechnische Anlagen - Gerät mit sicherheitstechnischer Bedeutung - Seismische
Qualifizierung (IEC/IEEE 60980-344:2020)
Installations nucléaires - Equipements importants pour la sûreté - Qualification sismique
(IEC/IEEE 60980-344:2020)
Ta slovenski standard je istoveten z: EN IEC/IEEE 60980-344:2021
ICS:
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
91.120.25 Zaščita pred potresi in Seismic and vibration
vibracijami protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC/IEEE 60980-344

NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 27.120.10; 27.120.20
English Version
Nuclear facilities - Equipment important to safety - Seismic
qualification
(IEC/IEEE 60980-344:2020)
Installations nucléaires - Equipements importants pour la Kerntechnische Anlagen - Gerät mit sicherheitstechnischer
sûreté - Qualification sismique Bedeutung - Seismische Qualifizierung
(IEC/IEEE 60980-344:2020) (IEC/IEEE 60980-344:2020)
This European Standard was approved by CENELEC on 2021-04-19. 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, 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 Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC/IEEE 60980-344:2021 E

European foreword
The text of document 45A/1323/FDIS, future edition 1 of IEC/IEEE 60980-344, prepared by SC 45A
"Instrumentation, control and electrical power systems of nuclear facilities" of IEC/TC 45 "Nuclear
instrumentation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
•
latest date by which the document has to be implemented at national (dop) 2022-01-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-04-19
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
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 and/or security measures in the subject-matter covered by this standard.
Endorsement notice
The text of the International Standard IEC/IEEE 60980-344:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60068-3-3 NOTE Harmonized as EN IEC 60068-3-3
IEC 60068-2-81 NOTE Harmonized as EN 60068-2-81
IEC 60068-2-47 NOTE Harmonized as EN 60068-2-47
IEC 60068-2-57 NOTE Harmonized as EN 60068-2-57
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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)
applies.
NOTE 1 Where 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
- Environmental testing - Part 2-6: Tests - -
IEC 60068-2-6 EN 60068-2-6
Test Fc: Vibration (sinusoidal)
- Nuclear facilities - Electrical equipment -
IEC/IEEE 60780- EN 60780-323
important to safety - Qualification
IEC/IEEE 60980-344 ®
Edition 1.0 2020-10
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

– 2 – IEC/IEEE 60980-344:2020
 IEC/IEEE 2020
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 11
4 Abbreviated terms . 19
5 General discussion of earthquake environment and equipment response. 20
5.1 General . 20
5.2 Earthquake environment . 20
5.3 Equipment on foundations . 20
5.4 Equipment on structures . 20
5.5 Interfaces and adverse interactions. 21
5.6 Simulating vibration induced by an earthquake . 21
5.6.1 General . 21
5.6.2 Response spectrum . 21
5.6.3 Time history . 22
5.6.4 PSD function . 22
5.7 Damping . 22
5.7.1 General . 22
5.7.2 Measurement of damping . 23
5.8 Application of damping . 23
5.8.1 General . 23
5.8.2 Application of damping in testing . 23
5.8.3 Application of damping in analysis . 24
6 Seismic qualification requirements . 24
6.1 General . 24
6.2 Specification of equipment to be qualified . 25
6.3 Specification of ageing condition . 25
6.4 Specification of seismic requirements . 25
6.5 Specification of acceptance criteria . 25
7 Seismic qualification approach . 26
7.1 Safety function . 26
7.2 Seismic qualification methods . 26
8 Ageing . 27
8.1 General . 27
8.2 Thermal ageing . 28
8.3 Radiation ageing . 28
8.4 Material degradation and corrosion . 28
8.5 Mechanical or electrical cycle ageing . 28
8.6 Vibration ageing . 28
8.6.1 General . 28
8.6.2 Ageing from non-seismic vibration conditions . 29
8.6.3 Hydrodynamic loads . 29
8.6.4 Seismic ageing (OBE/S1) . 29
9 Testing . 29
9.1 General . 29

IEC/IEEE 60980-344:2020 – 3 –
 IEC/IEEE 2020
9.1.1 Test programme . 29
9.1.2 Mounting . 31
9.1.3 Monitoring . 31
9.1.4 Loading . 31
9.1.5 Refurbishment . 32
9.1.6 Exploratory tests . 32
9.1.7 Seismic ageing (OBE/S1) . 34
9.2 Proof and generic testing . 34
9.3 Fragility testing . 35
9.4 Component testing . 35
9.5 Assembly testing . 35
9.5.1 General . 35
9.6 Test methods . 36
9.6.1 General . 36
9.6.2 Single-frequency test . 37
9.6.3 Multiple-frequency tests . 40
9.6.4 Other tests . 45
9.6.5 Test duration and low-cycle fatigue potential . 45
9.6.6 Multi-axis tests .
...