EN IEC 60721-2-6:2023
(Main)Classification of environmental conditions - Part 2-6: Environmental conditions appearing in nature - Earthquake vibration and shock
Classification of environmental conditions - Part 2-6: Environmental conditions appearing in nature - Earthquake vibration and shock
This part of IEC 60721 deals with environmental conditions appearing in nature related to earthquake vibrations and shocks. Its object is to define some fundamental properties and quantities for characterization of earthquakes as background material for the severities to which products are liable to be exposed during storage and use. Accelerations given are for ground surface conditions only. Conditions related to structures are referred to but restricted to general case descriptions.
Klassifizierung von Umgebungsbedingungen - Teil 2-6: Natürliche Einflüsse - Seismische Einflüsse
Classification des conditions d'environnement. Partie 2-6: Conditions d'environnement présentes dans la nature - Vibrations et chocs sismiques
L'IEC 60721-2-6:2022 traite des conditions d'environnement présentes dans la nature et qui sont liées à des vibrations et des chocs sismiques. Elle a pour objet de définir des propriétés fondamentales et des grandeurs pour la caractérisation des séismes comme base pour les sévérités auxquelles les matériels sont susceptibles d'être exposés durant leur stockage et leur utilisation. Les accélérations données concernent uniquement les conditions à la surface du sol. Les conditions relatives aux structures sont mentionnées, mais leurs descriptions sont limitées aux cas généraux. Cette deuxième édition annule et remplace la première édition parue en 1990. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
le principal objectif de la présente révision est de classer dans un nombre limité de classes le niveau d'activité sismique de la zone où le matériel est susceptible d'être installé;
la corrélation entre les échelles d'intensité, les échelles de magnitude et l'accélération crête du sol a été supprimée en raison de l'incertitude scientifique qui existe pour la définir de manière rigoureuse;
des échelles mises à jour sont données pour l'intensité et pour la magnitude;
la carte des zones de séismes, qui n'était pas utilisable en pratique, a été remplacée par une annexe qui fournit des informations qui permettent d'obtenir une répartition cohérente de l'accélération crête du sol dans le monde entier;
en ce qui concerne l’identification de l'accélération sismique crête du sol de la zone où le matériel est susceptible d'être installé, l’utilisateur est informé que des normes et des lois nationales peuvent s’appliquer.
Klasifikacija okoljskih pogojev - 2-6. del: Okoljski pogoji v naravi - Vibracije in potresni sunki (IEC 60721-2-6:2022)
Ta del standarda IEC 60721 obravnava okoljske pogoje, ki se pojavljajo v naravi in so povezani s potresnimi tresljaji in udarci.
Njegov namen je določiti nekatere osnovne lastnosti in količine za karakterizacijo potresov kot temeljno gradivo za resnosti, ki so jim lahko izpostavljeni proizvodi med hrambo in uporabo. Navedeni pospeški veljajo samo za razmere na talnih površinah.
Navedeni so pogoji, povezani s strukturami, vendar so omejeni na splošne opise primerov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2023
Klasifikacija okoljskih pogojev - 2-6. del: Okoljski pogoji v naravi - Vibracije in
potresni sunki (IEC 60721-2-6:2022)
Classification of environmental conditions. Part 2-6: Environmental conditions appearing
in nature - Earthquake vibration and shock (IEC 60721-2-6:2022)
Klassifizierung von Umgebungsbedingungen - Teil 2-6: Natürliche Einflüsse -
Seismische Einflüsse (IEC 60721-2-6:2022)
Classification des conditions d'environnement. Partie 2-6: Conditions d'environnement
présentes dans la nature. Vibrations et chocs sismiques (IEC 60721-2-6:2022)
Ta slovenski standard je istoveten z: EN IEC 60721-2-6:2023
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60721-2-6
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2023
ICS 19.040 Supersedes HD 478.2.6 S1:1993
English Version
Classification of environmental conditions - Part 2-6:
Environmental conditions appearing in nature - Earthquake
vibration and shock
(IEC 60721-2-6:2022)
Classification des conditions d'environnement. Partie 2-6: Klassifizierung von Umgebungsbedingungen - Teil 2-6:
Conditions d'environnement présentes dans la nature - Natürliche Einflüsse - Seismische Einflüsse
Vibrations et chocs sismiques (IEC 60721-2-6:2022)
(IEC 60721-2-6:2022)
This European Standard was approved by CENELEC on 2023-01-19. 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
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© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60721-2-6:2023 E
European foreword
The text of document 104/946/FDIS, future edition 2 of IEC 60721-2-6, prepared by IEC/TC 104
"Environmental conditions, classification and methods of test" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 60721-2-6:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-10-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-01-19
document have to be withdrawn
This document supersedes HD 478.2.6 S1:1993 and all of its amendments and corrigenda (if any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60721-2-6:2022 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60721-1 NOTE Approved as EN 60721-1
Annex A
(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
IEC 60068-3-3 2019 Environmental testing - Part 3-3: EN IEC 60068-3-3 2019
Supporting documentation and guidance -
Seismic test methods for equipment
ISO 2041 - Mechanical vibration, shock and condition - -
monitoring - Vocabulary
IEC 60721-2-6 ®
Edition 2.0 2022-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Classification of environmental conditions –
Part 2-6: Environmental conditions appearing in nature – Earthquake vibration
and shock
Classification des conditions d'environnement –
Partie 2-6: Conditions d'environnement présentes dans la nature – Vibrations et
chocs sismiques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-6272-6
– 2 – IEC 60721-2-6:2022 © IEC 2022
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General description of earthquake . 6
4.1 General . 6
4.2 Earthquake origin and propagation . 7
4.3 Earthquake behaviour . 7
4.4 Products on foundations . 7
4.5 Products in buildings and structures . 7
5 Seismic scales . 7
5.1 Definition of intensity and magnitude . 7
5.2 Examples of intensity scales . 8
5.3 Example of magnitude scale . 9
6 Description of the seismic environment by response spectra . 10
6.1 Response spectrum . 10
6.2 Ground response spectrum . 10
6.3 Required response spectrum . 11
7 Seismic activity zone classification . 11
Annex A (informative) Example of seismic activity zones . 16
A.1 Classification criteria of US Uniform Building Code . 16
A.2 World seismic activity zones classification according to UBC . 16
Bibliography . 25
Figure 1 – Acceleration record of the Irpinia-Basilicata-Italy earthquake (1980) . 12
Figure 2 – Model for composing a response spectrum . 13
Figure 3 – Response spectrum of the Calitri record of Irpinia earthquake (1980)
(Figure 1) for 2 % damping ratio value . 14
Figure 4 – Example of required response spectrum for ground motion . 15
Table 1 – Earthquake intensity scales for some countries/regions . 8
Table 2 – European Macroseismic Scale (EMS-98) . 9
Table 3 – Moment Magnitude Scale . 10
Table 4 – Seismic activity zones . 11
Table A.1 – Seismic activity zones definition according to UBC. 16
Table A.2 – Seismic activity zones classification according to UBC . 16
IEC 60721-2-6:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –
Part 2-6: Environmental conditions appearing in nature –
Earthquake vibration and shock
FOREWORD
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IEC 60721-2-6 has been prepared by IEC technical committee 104: Environmental conditions,
classification and methods of test. It is an International Standard.
This second edition cancels and replaces the first edition published in 1990. This edit
...
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