Classification of environmental conditions - Part 3-2: Classification of groups of environmental parameters and their severities - Transportation and Handling

IEC 60721-3-2:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 60721-3-2:2018 classifies the groups of environmental parameters and their severities to which a product is subjected while being transported and handled. The most commonly used methods of transportation and handling have been taken into account, including the following:
- road transport: cars, trucks;
- rail transport: trains, trams;
- water transport, inland and maritime: ships;
- air transport: aircraft, jet, propeller, helicopter;
- handling equipment: cranes, transport lifts, cableways, persons;
- conveyors;
- hand trollies.
This third edition cancels and replaces the second edition, published in 1997, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a. Clause 1: reworded and added handling.
b. Clause 2: updated normative references.
c. Clause 3: updated definitions.
d. Clause 4: reworded and simplified.
e. Clause 5: revised and updated. Several classes have been replaced by completely new classes based on the use of new information obtained from referenced Technical Reports.
f. Table 1 through Table 5: updated.
g. Table 6 added.
h. Old annexes A to C removed except Clause A.3 that is incorporated in Clause 5.
i. New Annex A.
The contents of the corrigendum of November 2018 have been included in this copy.

Classification des conditions d'envrironnement - Partie 3-2: Classification des groupements des agents d’environnement et de leurs sévérités - Transport et manutention

IEC 60721-3-2:2018 est disponible sous forme de IEC 60721-3-2:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L’IEC 60721-3-2:2018 classifie les groupements d’agents d’environnement et de leurs sévérités auxquelles un produit est soumis lors de son transport et de sa manutention. Il a été tenu compte des moyens de transport les plus couramment employés, y compris les moyens suivants:
- transports routiers: voitures, camions;
- transports ferroviaires: trains, tramways;
- transport par voies navigables, fluviales et maritimes: navires;
- transports aériens: avions (à propulsion, à hélice), hélicoptères;
- matériel de manutention: grues, monte-charges, téléphériques, personnes;
- courroies transporteuses;
- chariots manuels.
Cette troisième édition annule et remplace la deuxième édition, parue en 1997. Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a. Article 1: reformulation et ajout de la manutention.
b. Article 2: mise à jour des références normatives.
c. Article 3: mise à jour des définitions.
d. Article 4: reformulé et simplifié.
e. Article 5: révisé et mis à jour. Plusieurs catégories ont été remplacées par des catégories complètement nouvelles sur la base de nouvelles informations obtenues à partir des rapports techniques référencés.
f. Tableau 1 au Tableau 5: mise à jour.
g. Tableau 6 ajouté.
h. Suppression des anciennes annexes A à C à l’exception de l’Article A.3 qui est intégré dans l’Article 5.
i. Nouvelle Annexe A.
Le contenu du corrigendum de novembre 2018 a été pris en considération dans cet exemplaire.

General Information

Status
Published
Publication Date
22-Feb-2018
Current Stage
PPUB - Publication issued
Start Date
23-Feb-2018
Completion Date
23-Feb-2018
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IEC 60721-3-2
Edition 3.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Classification of environmental conditions –
Part 3-2: Classification of groups of environmental parameters and their
severities – Transportation and handling
Classification des conditions d’environnement –
Partie 3-2: Classification des groupements des agents d’environnement et de
leurs sévérités – Transport et manutention
IEC 60721-3-2:2018-02(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60721-3-2
Edition 3.0 2018-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Classification of environmental conditions –
Part 3-2: Classification of groups of environmental parameters and their
severities – Transportation and handling
Classification des conditions d’environnement –
Partie 3-2: Classification des groupements des agents d’environnement et de
leurs sévérités – Transport et manutention
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-5374-8

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60721-3-2:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope and object ............................................................................................................. 5

2 Normative references ....................................................................................................... 5

3 Terms and definitions....................................................................................................... 5

4 General ........................................................................................................................... 6

5 Classification of groups of environmental parameters and their severities ......................... 7

5.1 General ................................................................................................................... 7

5.2 K Climatic conditions ............................................................................................... 7

5.3 B Biological conditions ............................................................................................ 9

5.4 C Chemically active substances .............................................................................. 9

5.5 S Mechanically active substances .......................................................................... 10

5.6 M Mechanical conditions ....................................................................................... 11

Annex A (informative) Chemically active substances ............................................................. 15

Bibliography .......................................................................................................................... 16

Figure 1 – Consolidation of vibration conditions ..................................................................... 13

Figure 2 – Consolidation of mechanical conditions ................................................................. 14

Table 1 – Classification of climatic conditions .......................................................................... 8

Table 2 – Classification of biological conditions ....................................................................... 9

Table 3 – Classification of chemically active substances ........................................................ 10

Table 4 − Classification of mechanically active substances .................................................... 11

Table 5 – Classification of mechanical conditions .................................................................. 11

---------------------- Page: 4 ----------------------
– 3 – IEC 60721-3-2:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –
Part 3-2: Classification of groups of environmental parameters
and their severities –
Transportation and handling
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

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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

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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 60721-3-2 has been prepared by IEC technical committee 104:

Environmental conditions, classification, and methods of test.

This third edition cancels and replaces the second edition, published in 1997, and constitutes a

technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) Clause 1: reworded and added handling.
b) Clause 2: updated normative references.
c) Clause 3: updated definitions.
d) Clause 4: reworded and simplified.
---------------------- Page: 5 ----------------------
– 4 – IEC 60721-3-2:2018 © IEC 2018

e) Clause 5: revised and updated. Several classes have been replaced by completely new

classes based on the use of new information obtained from referenced Technical Reports.

f) Table 1 through Table 5: updated.
g) Table 6 deleted.

h) Old annexes A to C removed except Clause A.3 that is incorporated in Clause 5.

i) New Annex A.
The text of this International Standard is based on the following documents:
FDIS Report on voting
104/773/FDIS 104/783/RVD

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.

The contents of the corrigendum of November 2018 have been included in this copy.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 6 ----------------------
– 5 – IEC 60721-3-2:2018 © IEC 2018
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –
Part 3-2: Classification of groups of environmental parameters
and their severities –
Transportation and handling
1 Scope and object

This part of IEC 60721 classifies the groups of environmental parameters and their severities

to which a product is subjected while being transported and handled.

The most commonly used methods of transportation and handling have been taken into

account, including the following:
– road transport: cars, trucks;
– rail transport: trains, trams;
– water transport, inland and maritime: ships;
– air transport: aircraft, jet, propeller, helicopter;
– handling equipment: cranes, transport lifts, cableways, persons;
– conveyors;
– hand trollies.

The environmental conditions specified in this document are those that the product can be

exposed to while transported and handled. If the product is packaged, the environmental

conditions apply to the package containing the product. If the product is unpackaged, the

environmental conditions apply to the product.
Conditions for storage are given in IEC 60721-3-1.
2 Normative references

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.

IEC 60721-1, Classification of environmental conditions − Part 1: Environmental parameters

and their severities
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60721-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
---------------------- Page: 7 ----------------------
– 6 – IEC 60721-3-2:2018 © IEC 2018
3.1
weather-protected
protected from the influences of meteorological conditions
3.2
non-weather-protected
not protected from the influences of meteorological conditions
4 General

A product may be subjected to a range of environmental conditions during its lifetime. These

conditions have been separated into classes described in IEC 60721-3-0. The classes given

may be used for defining the maximum short-term environmental stresses on a product.

However, they do not provide information regarding the long-term or total lifetime

environmental stresses a product may experience. This means that no reliability or lifetime

assessment is possible based on these classes alone. Refer to IEC 60721-2 (all parts) and

applicable technical reports (IEC TR 62130, IEC TR 62131-2, IEC TR 62131-3,

IEC TR 62131-4 and IEC TR 62131-5) for further information on actual environmental

conditions.

A product may be simultaneously exposed to a number of environmental parameters. For

example, solar radiation and temperature, temperature and humidity, as well as vibration and

temperature change. Combinations of the environmental parameters given may increase the

stress effect on a product. Therefore, combined conditions should be considered in the design

and evaluation of a product.

Products should be designed to survive and operate in different environments. Basically, they

will be affected by environmental influences in two ways:

– by the effects of short-term extreme environmental conditions which may directly cause

malfunction or destroy the product;

– by the effect of long-term subjection to non-extreme environmental stresses which may

slowly degrade the product and finally cause malfunction or destruction of the product.

Short-term extreme environmental conditions may occur at any time in a product's life. A

product may be unaffected by an extreme condition when it is new but fail when it is subjected

to the same condition after being used for a long period of time due to the effect of ageing. The

order in which the environmental conditions are applied may affect the results of an evaluation.

It is important for the product specification, when referring to a certain class in

IEC 60721-3 (all parts), to define whether the product is required to be capable of operating or

only to survive without permanent damage when being exposed to the conditions described by

the class.

The environmental classes may be used as a basis for the selection of design and test

severities with respect to the consequence of failure. Information contained in

IEC 60721-3 (all parts) may be used as a means to help establish expected requirements for

use, storage, transportation, etc., and in the development of relevant specifications. The

selected severities used for testing should attempt to produce the effects of the actual

environment.

EXAMPLE 1 A high temperature test on a heat dissipating product is designed to simulate the thermal effect of

subjecting a product to conditions of high air temperature, solar radiation and other possible heat sources

dependent on the application.

EXAMPLE 2 In a mechanical shock test, the product can be subjected to mechanical shocks of simple pulse

shapes (e.g., half-sine), while the actual conditions cannot be described by such simple pulses.

It is recognized that extreme or special environmental conditions may exist which require

consideration of severities that are not addressed by this document.
---------------------- Page: 8 ----------------------
– 7 – IEC 60721-3-2:2018 © IEC 2018
5 Classification of groups of environmental parameters and their severities
5.1 General

A number of classes for climatic conditions (K), special climatic conditions (Z), biological

conditions (B), chemically active substances (C), mechanically active substances (S), and

mechanical conditions (M) are specified.

This classification allows for a number of possible combinations of environmental conditions

which bear upon products wherever stored. It represents the real situation concerning

world-wide conditions of storage due to local influences of open-air climate, etc. For certain

environmental parameters, it has not yet been possible to specify quantitative severities.

For a given location or product, reference should be made to the total set of classes as defined

in 5.2 through 5.6, for example:
2K13/2B3/2C2/2S6/2M5
5.2 K Climatic conditions

NOTE The classes defined in previous versions of this document have been replaced with new classes as a result

of recent efforts at collecting information regarding climatic conditions. Those results are contained in Technical

Reports referenced in this document.

When selecting appropriate classes, attention should be paid to the fact that the climatic

conditions in weather-protected locations may depend on the open-air (non-weather-protected)

conditions, especially air temperature and solar radiation, and the type of transportation

enclosure.
The following conditions are specified in Table 1.

2K10 applies to fully air conditioned enclosed transportation. Air temperature and humidity

control is used continuously to maintain the required conditions.

2K11 applies to weather-protected transportation with limited temperature control and no

humidity control.

2K12 applies to weather-protected transportation without temperature and humidity controls

in unventilated enclosures in arid, temperate, tropical and cold climates. Polar climate

is excluded. The product may be transported in heated, pressurized aircraft holds.

2K13 applies to non-weather-protected transportation in temperate, tropical, and cold

climates. Arid and polar climates are excluded.

2K14 applies to transportation in non-weather-protected transportation worldwide (including

arid and polar climates). This also includes transportation in unpressurized aircraft

holds. The product may be subjected to sea waves when being transported on open
decks of ships.
---------------------- Page: 9 ----------------------
– 8 – IEC 60721-3-2:2018 © IEC 2018
Table 1 – Classification of climatic conditions
Classification
Non-weather-
Environmental parameter Unit Weather-protected
protected
2K10 2K11 2K12 2K13 2K14
a) Low air temperature °C +20 +5 −45 −45 −50
6) 9) 9)
b) High air temperature °C +25 +40 +70 +45 +50
c) Low relative humidity % 20 5 4 4 4
d) High relative humidity % 75 85 100 100 100
1) 3
e) Low absolute humidity g/m 4 1 0,5 0,02 0,003
1) 3
f) High absolute humidity g/m 15 25 29 35 35
g) Rate of change of temperature °C/min 0,1 0,5 1,0 1,0 1,0
h) Low air pressure kPa 70 70 70 70 30
i) High air pressure kPa 106 106 106 106 106
j) Solar radiation W/m No No 1090 1090
k) Heat radiation Not specified None None None None None
7) 7)
l) Movement of surrounding air m/s 0,5 1,0 1,0
m) Condensation Not specified No No Yes Yes Yes
n) Precipitation (rain, snow, hail, etc.) Not specified No No No Yes Yes
o) Rain intensity mm/min None None None 3,3 3,3
7) 7)
p) Driving rain m/s None None None
q) Snow load kg/m None None None 100 100
r) Low rain temperature °C None None None +5 +5
Dripping 10) 10)
s) Water from sources other than rain Not specified No No
Water
t) Formation of ice and frost (including Not specified No No Yes Yes Yes
freeze-thaw)
u) Temperature shock Not specified No No Yes Yes Yes

The low and high relative humidity levels are limited by the low and high absolute humidity, so that, for

example, for environmental parameters a) and c), or b) and d), the severities given in Table 1 do not occur

simultaneously.
Averaged over a period of time of 5 min.

The value of 70 kPa represents a limit for open-air conditions, normally at an altitude of 3 000 m. In some

geographical areas, open-air conditions may occur at higher altitudes. Conditions in mines are not

considered.

A cooling system based on non-assisted convection may be disturbed by adverse movement of surrounding

air.

This rain temperature should be considered together with high air temperature b) and solar radiation j). The

cooling effect of the rain has to be considered in connection with the surface temperature of the product.

These are air-conditioned locations with a tolerance of ±2 °C on stated temperature value.

If applicable, a special value should be selected based on expected transportation mode (e.g., lorry, open

decks of ships).
Thermal effect of solar radiation is included in the temperature.
Thermal effect of solar radiation is not included in the temperature.
10)
Sources of water other than rain are encompassed by driving rain.
---------------------- Page: 10 ----------------------
– 9 – IEC 60721-3-2:2018 © IEC 2018
5.3 B Biological conditions

No quantitative severity has been specified for the following conditions. The specified

parameters of Table 2 are typical, but may not be complete.

2B1 applies to transportation in areas without risks from mould growth and attack by

animals, or in compartments with environmental controls in place to prevent mould

growth and attack by animals.

2B2 applies to transportation in areas where mould growth and attacks of animals, except

termites, may occur.

2B3 applies to transportation in areas where attacks by termites may additionally occur.

Table 2 – Classification of biological conditions
Class
Biological parameter
2B1 2B2 2B3
Presence of mould, fungus, etc.
Presence of rodents and other animals
None Negligible
harmful to products
excluding termites including termites
5.4 C Chemically active substances

The contamination of the natural atmosphere is mainly caused by chemical emissions from

industrial activities, motor-driven vehicles, and heating systems. A further chemical influence is

caused by aerosols of sea and road salts. Contamination may affect the product’s function and

materials. The parameters shown in Table 3 are estimates based on information available at

the time of publication. It is recommended that reference be made to local or regional

information specific to an area of interest when establishing requirements.
See Annex A for additional information.

2C1 applies to transportation and handling in rural and some urban areas with low

industrial activity and moderate traffic, and areas where there is either no salt mist or

there are protections in place to protect the product from salt mist. This also applies to

handling indoors.

2C2 applies to transportation and handling in areas with normal levels of contaminants as

experienced in urban areas with industrial activity scattered over the whole area, or

with heavy traffic. This includes transportation in areas where salt mist is present

including maritime transport of containers but not transport on open decks of ships.

2C3 applies to transportation and handling in areas that are in the immediate vicinity of

industrial sources with chemical emissions, and transportation on open decks of
ships.
---------------------- Page: 11 ----------------------
– 10 – IEC 60721-3-2:2018 © IEC 2018
Table 3 – Classification of chemically active substances
Class
Environmental 2C1 2C2 2C3
Unit
parameter
Maximum Maximum Maximum
Mean value Mean value
2) 2)
value value value
a) Salt mist to None No Yes Yes
include sea and
road salts
b) Saltwater None No No Yes
c) Sulphur dioxide mg/m 0,1 0,3 1,0 5,0 10
3 3
cm /m 0,037 0,11 0,37 1,85 3,7
d) Hydrogen mg/m 0,01 0,1 0,5 3,0 10
sulphide
3 3
cm /m 0,0071 0,071 0,36 2,1 7,1
e) Hydrogen mg/m 0,1 0,1 0,5 1,0 5,0
chloride
3 3
cm /m 0,066 0,066 0,33 0,66 3,3
f) Hydrogen fluoride mg/m 0,003 0,01 0,03 0,1 2,0
3 3
cm /m 0,0036 0,012 0,036 0,12 2,4
g) Ammonia mg/m 0,3 1,0 3,0 10 35
3 3
cm /m 0,42 1,4 4,2 14 49
h) Ozone mg/m 0,01 0,05 0,1 0,1 0,3
3 3
cm /m 0,005 0,025 0,05 0,05 0,15
i) Nitrogen oxides mg/m 0,1 0,5 1,0 3,0 9,0
(expressed in
3 3
cm /m 0,052 0,26 0,52 1,56 4,68
equivalent values of
nitrogen dioxide)
1) 3 3 3

The values given in cm /m have been calculated from the values given in mg/m referenced to a temperature

of 20 °C and a pressure of 101,3 kPa. The table uses rounded values.

Mean values are expected long-term values. Maximum values are limit or peak values occurring over a period

of time that is typically not more than 30 min per day.
5.5 S Mechanically
...

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