EN IEC 60721-2-7:2018

SLOVENSKI STANDARD
01-julij-2018
Klasifikacija okoljskih pogojev - 2. del: Okoljski pogoji v naravi - Favna in flora
(IEC 60721-2-7:2018)
Classification of environmental conditions - Part 2: Environmental conditions appearing in
nature - Fauna and flora (IEC 60721-2-7:2018)
Ta slovenski standard je istoveten z: EN IEC 60721-2-7:2018
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 60721-2-7

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2018
ICS 19.040
English Version
Classification of environmental conditions - Part 2:
Environmental conditions appearing in nature - Fauna and flora
(IEC 60721-2-7:2018)
Classification des conditions d'environnement - Partie 2 : Klassifizierung von Umgebungsbedingungen - Teil 2-7:
Conditions d'environnement présentes dans la nature - Natürliche Umgebungsbedingungen - Fauna und Flora
Faune et flore (IEC 60721-2-7:2018)
(IEC 60721-2-7:2018)
This European Standard was approved by CENELEC on 2018-04-23. 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, 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60721-2-7:2018 E

European foreword
The text of document 104/741/CDV, future edition 2 of IEC 60721-2-7, 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 60721-2-7:2018.

The following dates are fixed:
(dop) 2019-01-23
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-04-23
standards conflicting with the
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.

Endorsement notice
The text of the International Standard IEC 60721-2-7:2018 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 60721-1:1990 and NOTE Harmonized as EN 60721-1:1995 (not modified)
IEC 60721-1:1990/A1:1992
IEC 60721-1:1990/A2:1995 NOTE Harmonized as EN 60721-1:1995/A2:1995 (not modified).

IEC 60721-2-7 ®
Edition 2.0 2018-03
INTERNATIONAL
STANDARD
Classification of environmental conditions –

Part 2-7: Environmental conditions appearing in nature – Fauna and flora

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.040 ISBN 978-2-8322-5483-7

– 2 – IEC 60721-2-7:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General . 5
5 Occurrence of fauna and flora . 6
5.1 Fungi . 6
5.1.1 Background . 6
5.1.2 Growth and survival factors . 6
5.1.3 Habitat and geographical distribution . 7
5.1.4 Effects of fungi on materials . 8
5.2 Bacteria . 11
5.2.1 Background . 11
5.2.2 Growth and survival factors . 11
5.2.3 Habitat . 12
5.2.4 Effects of bacteria on materials. 12
5.3 Insects . 13
5.3.1 Background . 13
5.3.2 Habitat . 14
5.3.3 Effects of insects on materials . 14
5.4 Rodents . 14
5.4.1 Background . 14
5.4.2 Effects of rodents on materials . 14
5.5 Algae and marine organisms . 15
5.5.1 Algae . 15
5.5.2 Borers . 15
5.5.3 Fouling organisms . 15
Bibliography . 16

Figure 1 – Map of regions with different degrees of fungal corrosion . 8

Table 1 – List of fungus resistant materials . 9
Table 2 – List of potential fungus nutrient materials . 10

IEC 60721-2-7:2018 © IEC 2018 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –

Part 2-7: Environmental conditions appearing in nature –
Fauna and flora
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 60721-2-7 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This second edition cancels and replaces the first edition published in 1987. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) This edition has been entirely rewritten.

– 4 – IEC 60721-2-7:2018 © IEC 2018
The text of this International Standard is based on the following documents:
CDV Report on voting
104/741/CDV 104/792/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60721 series, published under the general title Classification of
environmental conditions, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IEC 60721-2-7:2018 © IEC 2018 – 5 –
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –

Part 2-7: Environmental conditions appearing in nature –
Fauna and flora
1 Scope
This document addresses the occurrence of fauna and flora, including its main effects on
electrotechnical products. Exposure and damage from the effects of fauna and flora can occur
at almost any time in a product's life cycle. Moreover, there are many agents of attack with
various actions.
This document addresses the occurrence and damage arising from fauna and flora in all
locations a product can be stored, transported or used. Generally, fauna can be present and
cause damage to products in both the natural environments experienced in open-air locations
as well as in artificially created environments, such as in a warehouse or building. However,
flora will predominantly be present and cause damage to products only in open-air locations.
Fungus and bacteria can be present in both open-air locations as well as in warehouses or
buildings.
2 Normative references
T
...