IEC 60704-2-4:2011

IEC 60704-2-4 ®
Edition 3.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-4: Particular requirements for washing machines and spin extractors

Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-4: Exigences particulières pour les machines à laver le linge et les
essoreuses centrifuges
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IEC 60704-2-4 ®
Edition 3.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Test code for the determination of
airborne acoustical noise –
Part 2-4: Particular requirements for washing machines and spin extractors

Appareils électrodomestiques et analogues – Code d'essai pour la détermination
du bruit aérien –
Partie 2-4: Exigences particulières pour les machines à laver le linge et les
essoreuses centrifuges
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 17.140.20; 97.060 ISBN 978-2-88912-789-4

– 2 – 60704-2-4 © IEC:2011
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and object . 6
1.1 Scope . 6
1.2 Object . 6
1.3 Measurement uncertainty . 6
1.101 Standard deviation for declaration and verification . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Measurement methods and acoustical environments . 8
4.2 Direct method . 8
4.3 Comparison method . 9
5 Instrumentation . 9
5.3 Instrumentation for measuring operating conditions . 9
6 Operation and location of appliances under test . 9
6.1 Equipping and pre-conditioning of appliances . 9
6.2 Supply of electric energy and of water or gas . 9
6.4 Loading and operating of appliances during tests . 10
6.5 Location and mounting of appliances . 10
6.101 Standard test programme for noise measurements . 10
6.102 Standard test load for noise measurements . 10
7 Measurement of sound power levels . 12
7.1 Microphone array, measurement surface and RSS location for essentially
free-field conditions over reflecting plane(s) . 12
7.4 Measurements . 12
8 Calculation of sound pressure and sound power levels . 12
8.101 Final result . 12
9 Information to be recorded. 13
9.2 Description of appliance under test . 13
9.7 Electric supply, water supply, etc. . 13
9.9 Operation of the appliance under test . 13
9.12 Measured data . 13
10 Information to be reported . 13
10.3 Test conditions for the appliance . 13
10.4 Acoustical data . 14
Annexes . 15
Annex A (normative) . 15
Bibliography . 16

Table 101 – Standard deviations of sound power levels for washing machines . 7
Table 102 – Standard deviations of sound power levels for spin extractors . 7
Table 103 – Standard deviations for declaration and verification for washing machines . 7
Table 104 – Standard deviations for declaration and verification for spin extractors . 7

60704-2-4 © IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –

Part 2-4: Particular requirements for washing machines
and spin extractors
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
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60704-2-4 has been prepared by subcommittee 59D: Home
laundry appliances, of IEC technical committee 59: Performance of household and similar
electrical appliances.
This third edition cancels and replaces the second edition (2001). Main changes are:
• measurement uncertainty and standard deviations are taken into account,
• definitions of standard test load and standard test program are modified,
• test enclosure was replaced by common test enclosure defined in Part 1,
• information to be reported is modified.

– 4 – 60704-2-4 © IEC:2011
The text of this standard is based on the following documents:
CDV Report on voting
59D/379/CDV 59D/387/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-4 is intended to be used in conjunction with the third edition (2010) of IEC 60704-
1, Household and similar electrical appliances – Test code for the determination of airborne
acoustical noise – Part 1: General requirements.
NOTE When “Part 1” is mentioned in this standard, it refers to IEC 60704-1.
The relevant text of Part 1 as amended by this publication establishes the test code for
washing machines and spin extractors.
This Part 2-4 supplements or modifies the corresponding clauses in IEC 60704-1. When a
particular subclause of Part 1 is not mentioned in this Part 2-4, that subclause is applicable as
far as reasonable. Where this standard states "addition", "modification" or "replacement", the
relevant requirements, test specifications or explanatory matter in Part 1 should be adapted
accordingly.
Subclauses, tables and figures that are additional to those in Part 1 are numbered starting
from 101. Additional annexes are lettered AA, BB, etc.
Unless notes are in a new subclause or involve notes in Part 1, they are numbered starting
from 101, including those in a replaced clause or subclause.
A list of all the parts in the IEC 60704 series, under the general title Household and similar
electrical appliances – Test code for the determination of airborne acoustical noise, can be
found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60704-2-4 © IEC:2011 – 5 –
INTRODUCTION
The measuring conditions specified in this Part 2-4 provide for sufficient accuracy in
determining the noise emitted and comparing the results of measurements taken by different
laboratories, whilst simulating as far as possible the practical use of household washing
machines and spin extractors.
It is recommended to consider the determination of noise levels as part of a comprehensive
testing procedure covering many aspects of the properties and performance of household
washing machines and spin extractors.
NOTE As stated in the introduction to IEC 60704-1, this test code is concerned with airborne noise only.

– 6 – 60704-2-4 © IEC:2011
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
TEST CODE FOR THE DETERMINATION
OF AIRBORNE ACOUSTICAL NOISE –

Part 2-4: Particular requirements for washing machines
and spin extractors
1 Scope and object
This clause of Part 1 is applicable except as follows:
1.1 Scope
1.1.1 General
Addition:
These particular requirements apply to single unit electrical washing machines and the
washing and spinning function of combined appliances for household and similar use and to
spin extractors for household and similar use.
NOTE 101 For drying function, see IEC 60704-2-6.
1.1.2 Types of noise
Replacement:
The methods specified in ISO 3743-1, ISO 3743-2 and ISO 3744 can be used for measuring
noise emitted by washing machines and spin extractors.
1.1.3 Size of the source
Replacement:
The method specified in ISO 3744 is applicable to noise sources of any size. When applying
ISO 3743-1 and ISO 3743-2, care should be taken that the maximum size of the washing
machine or spin extractor under test fulfils the requirements specified in 1.3 of ISO 3743-1
and ISO 3743-2.
1.2 Object
Addition:
Requirements for the declaration of noise emission values are not within the scope of this
standard.
NOTE 101 For determining and verifying noise emission values declared in product specifications, see
IEC 60704-3.
1.3 Measurement uncertainty
Replacement:
For washing machines the estimated values of standard deviations of sound power levels,
determined according to this standard, are as indicated in Table 101:

60704-2-4 © IEC:2011 – 7 –
Table 101 – Standard deviations of sound power levels for washing machines
Standard deviation (dB)
σ (repeatability) σ (reproducibility)
r R
0,6 1,0
For spin extractors the estimated values of standard deviations of sound power levels,
determined according to this standard, are as indicated in Table 102:
Table 102 – Standard deviations of sound power levels for spin extractors
Standard deviation (dB)
σ (repeatability) σ (reproducibility)
r R
0,5 1,0
1.101 Standard deviation for declaration and verification
For the purpose of determining and verifying declared noise emission values for washing
machines according to IEC 60704-3, the values indicated in Table 103 apply:
Table 103 – Standard deviations for declaration and verification for washing machines
Standard deviation (dB)
σ (production) σ (total) σ (reference)
P t M
1,0 to 2,2 1,4 to 2,4 2,5
For the purpose of determining and verifying declared noise emission values for spin
extractors according to IEC 60704-3, the values indicated in Table 104 apply:
Table 104 – Standard deviations for declaration and verification for spin extractors
Standard deviation (dB)
σ (production) σ (total) σ (reference)
P t M
1,0 to 1,2 1,4 to 1,6 2,0
2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
IEC 60456:2010, Clothes washing machines for household use – Methods for measuring the
performance
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.101
washing machine
appliance for cleaning and rinsing of textiles using water which may also have a means of
extracting excess water from the textiles

– 8 – 60704-2-4 © IEC:2011
3.102
rated capacity
maximum mass in kg of dry textiles of a particular defined type which the manufacturer
declares can be treated in the washing machine on the program selected. If the rated capacity
is not declared, it shall be deduced from the free inside volume of the drum, according to the
following ratio:
– horizontal axis washing machines 1 kg / 13 l
– agitator washing machines 1 kg / 15 l
– impeller washing machines 1 kg / 20 l
– spin extractors  1 kg / 4,6 l
3.103
cotton test load
textile load consisting of towels only as defined in Annex C of IEC 60456:2010
3.104
washing period
begins at the first water filling of the main wash, ends at the start of the drainage pump before
the first rinsing operation
NOTE Options such as "pre-wash" are not included in the washing period.
3.105
rinsing period
begins at the start of the drainage pump before the first rinsing, ends at the start of the
drainage pump after the last rinsing
3.106
final spin extraction period
begins at the start of the drainage pump after the last rinsing, ends with the end of the
programme
3.107
end of programme
the programme is complete when the washing machine indicates the end of the programme
and the load is accessible for the user. Where there is no end of programme indicator and the
door is locked during operation, the programme is complete when the load is accessible to the
user. Where there is no end of programme indicator and the door is not locked during
operation, the programme is complete when the power consumption of the appliance drops to
some steady state condition and the appliance is not performing any function
3.108
test series
sequence of three consecutive runs of the standard test programme in order to determine the
sound power level of the appliance
NOTE For the function “spin extraction” three additional runs may be necessary.
4 Measurement methods and acoustical environments
This clause of Part 1 is applicable except as follows:
4.2 Direct method
Addition:
60704-2-4 © IEC:2011 – 9 –
NOTE 101 If pure tone components are present in the noise emitted by the source, the estimated standard
deviation of the measured sound pressure levels in the special reverberation room may increase. In such cases
additional microphone positions or source positions may be necessary as specified in ISO 3743-2.
4.3 Comparison method
Addition:
NOTE 101 If pure tone components are present in the noise emitted by the source, the estimated standard
deviation of the measured sound pressure levels in the hard-walled test room or in the special reverberation room
may increase. In such cases additional microphone positions or source positions may be necessary as specified in
ISO 3743-1 or ISO 3743-2.
5 Instrumentation
This clause of Part 1 is applicable except as follows:
5.3 Instrumentation for measuring operating conditions
5.3.1 Addition:
Spin speed shall be recorded at intervals of 1 s or less.
6 Operation and location of appliances under test
This clause of Part 1 is applicable except as follows:
6.1 Equipping and pre-conditioning of appliances
6.1.3 Replacement:
Prior to noise measurements, the washing machine shall have been operated for at least five
complete cycles as specified in 6.101 with standard test load as specified in 6.102, but
regardless of the averaged age of the test load.
Separate spin extractors shall have been operated without load for a total duration of at least
1 h at the highest speed setting and if necessary, with rest periods as specified in the
manufacturer’s instructions.
6.1.4 Not applicable.
6.2 Supply of electric energy and of water or gas
6.2.2 and 6.2.3 Not applicable.
6.2.4 Replacement:
For noise measurements, the static water pressure during filling shall be (240 ± 50) kPa, if not
contradictory to the manufacturer’s instructions.
Appliances shall be supplied with cold water, if not otherwise specified by the manufacturer.
The temperature of cold water shall be (15 ± 5) °C, the temperature of hot water shall be
(55 ± 5) °C.
The water hardness may be neglected.
NOTE 101 When, in some countries, the water supply pressure/temperature differs from the water supply
pressure/temperature of the country concerned, measurements carried out at rated pressure/temperature may be

– 10 – 60704-2-4 © IEC:2011
misleading for the consumer. In this case, additional measurements may be necessary. If the test
pressure/temperature differs from the rated pressure/temperature, this should be reported.
6.4 Loading and operating of appliances during tests
6.4.2 Replacement:
Washing machines are operated in the standard test programme according to 6.101, with a
load according to 6.102.
Single spin extractors, or separate spin extractor drums in combination with a washing
machine, or washing machines, where the spinning action is not included in the programme,
shall be loaded according to 6.102. In this case, wet pieces which have been washed and
rinsed before, in an appropriate washing machine (for a machine combination, in the
accompanying washing machine), shall be used. If, for a machine combination, the rated
capacity for spin extraction is different from that for washing, the load shall be adjusted for
this function accordingly.
NOTE 101 The way of loading the machine influences the results of the noise measurements. To get reproducible
results it is necessary to load the machine always in layers from bottom to top. The cotton test load for each
subsequent step is evenly distributed in one level of the drum or basket. Excessive force should not be used.
In case of a spin extractor with vertical axis, wet pieces of textile shall be placed as close
together as possible in an arrangement around the inner wall of the drum so as to reduce the
chance of the spin extractor becoming unbalanced.
6.5 Location and mounting of appliances
6.5.1 and 6.5.2 Not applicable.
6.5.4 Not applicable
6.5.5 Addition:
Appliances designed for front loading and specified by the manufacturer for building under a
counter or for placing under a worktop between cabinets (under-counter types) shall be built-
in according to the manufacturer’s installation instructions in an appropriate test enclosure
according to Annex B of Part 1.
6.101 Standard test programme for noise measurements
The standard test programme for noise measurements is a 60 °C cotton programme without
pre-wash as advised by the manufacturer.
If this programme is not available, then the most effective programme for white cotton
according to the manufacturer's instructions shall be used. Other special options shall be
deselected.
Highest available spin speed is to be chosen.
The standard test programme for noise measurements is carried out without detergent.
6.102 Standard test load for noise measurements
6.102.1 General
The standard test load for noise measurements of washing machines consist of conditioned
cotton test load at a weight close to, but in any case not more than, the rated capacity.
To minimize the influence of changes in the characteristics of the cotton test load items with
increasing age, the standard test load shall consist of cotton test load items which are well

60704-2-4 © IEC:2011 – 11 –
distributed in age to give an average age of the standard test load between 30 and 50 runs of
the standard test programme. The number of items or average age shall not be adjusted
during a test series.
The average age of a cotton test load is calculated as follows:
A= × n ×a
∑ i i
n
∑ i
where
a is the age of a single cotton test load item as the number of test runs after pre-treatment
i
as defined in 6.102.2;
n is the number of cotton test load items of the same age;
i
A is the average age of the standard test load expressed as the number of test runs.
Cotton test load items shall undergo normalisation as defined in 6.102.3 at least after have
been used ten runs of the standard test programme.
No test load item shall be used for more than 80 runs of the standard test programme,
excluding pre-treatment runs prior to initial use and normalisation runs.
6.102.2 Pre-treatment of new cotton test load items prior to use
New cotton test load items shall be treated before their first use by undergoing normalisation
as defined in 6.102.3 five times, but without intermediate drying.
6.102.3 Normalisation of cotton test load items
For normalisation cotton test load items shall be washed using test powder of reference
detergent A* according to Annex B of IEC 60456:2010 and a 60 °C cotton programme.
Detergent shall be dosed with 15 g/kg of cotton test load.
6.102.4 Conditioning of cotton test load
Conditioning is the process of bringing the cotton test load to reach specific remaining
moisture content after normalisation and drying and prior to the next test series.
Conditioning can be done by placing the cotton test load items in a room/chamber with
ambient temperature and humidity which is maintained at:
ambient temperature       t   = 20 °C ± 5 °C
relative humidity          RH = 50 % ± 20 %
Two methods are available as follows:
– the cotton test load items shall be hung singly and separately so that air can freely
circulate between individual load items. The load is left for a period of not less than 15 h;
– the cotton test load items shall be left until their mass has changed by less than 0,5 % for
two successive measurements which are taken at intervals of two hours or more.
NOTE The cotton test load does not have to be conditioned between consecutive runs of the standard test
programme. However, the test load is to be dried in a tumble dryer until the weight is within 2 % of the initial weight
of the standard test load for noise measurement.

– 12 – 60704-2-4 © IEC:2011
7 Measurement of sound power levels
This clause of Part 1 is applicable except as follows:
7.1 Microphone array, measurement surface and RSS location for essentially free-
field conditions over reflecting plane(s)
7.1.1 Not applicable.
7.1.3 to 7.1.7 Not applicable.
7.4 Measurements
7.4.1 Addition:
For washing function, the A-weighted sound pressure level shall be time-averaged over the
total duration of the washing period.
For spinning function, the highest A-weighted time-averaged sound pressure level with an
averaging time of 50 s shall be determined within the time interval beginning at the start of the
drainage pump before the first rinsing end ending with the end of the programme. For the
same time interval of 50 s when the highest A-weighted time averaged sound pressure level
occurs, the averaged spin speed shall be determined.
NOTE 101 Spinning may also occur during rinsing; therefore, the measurement of noise level for function “spin
extraction” is made during rinsing period and final spin extraction period.
NOTE 102 Acoustic indications of the end of programme or following actions to avoid creasing have to be
disregarded.
If the noise of the appliance under test varies periodically, care shall be taken to avoid any
effect of synchronism between the variation of the noise emission and the measurement
procedure (traverses of a moving microphone, duration of scanning the microphone positions,
etc.).
7.4.4 Not applicable.
8 Calculation of sound pressure and sound power levels
This clause of Part 1 is applicable except as follows:
8.101 Final result
To obtain the final result for the washing function, three complete measurements according to
7.4.1 shall be carried out in the standard test programme according to 6.101 with standard
test load according to 6.102.
To obtain the final result for the spinning function, three complete measurements according to
7.4.1 shall be carried out in the standard test programme according to 6.101 with standard
test load according to 6.102. If, however the difference between any two of the measurements
exceeds 3 dB(A), three additional measurements shall be carried out.
The final result for each function is the logarithmic mean value of all measurements,
calculated as follows:
N
 
0,1L
WAi
L = 10lg  10  dB
WA
∑
N
 
i=1
 
60704-2-4 © IEC:2011 – 13 –
where
L is the sound power level of the tested appliance;
WA
L are the sound power levels of the single measurements;
WAi
N is the number of measurements (three or six).
NOTE If the maximum spin speed in the final spin extraction period is not influenced, additional measurements
may be shortened by starting with rinsing.
9 Information to be recorded
This clause of Part 1 is applicable except as follows:
9.2 Description of appliance under test
9.2.6 Replacement:
Rating data: voltage, rated capacity, water supply pressure, water supply temperature, rated
spin speed in the final spin extraction period.
9.7 Electric supply, water supply, etc.
9.7.4 Not applicable
9.9 Operation of the appliance under test
9.9.1 Replacement:
Description of the standard test load: initial weight of the standard test load for noise
measurements, average age of the standard test load.
9.9.2 Replacement:
Description of the standard test programme: selected programme, spin speed.
9.9.3 Not applicable
9.12 Measured data
9.12.101
Spin speed shall be recorded over the time interval beginning at the start of the drainage
pump before the first rinsing and ending at the stop of the drainage pump after the last
spinning.
10 Information to be reported
This clause of Part 1 is applicable except as follows:
10.3 Test conditions for the appliance
10.3.3 Not applicable.
10.3.5 Not applicable.
10.3.11 Not applicable.
– 14 – 60704-2-4 © IEC:2011
10.4 Acoustical data
10.4.101 For the time interval where the highest A-weighted time-averaged sound pressure
level with an averaging time of 50 s was determined, the averaged spin speed. For
a time interval of 60 s backwards from the point of time where the maximum spin
speed was left, the minimum, maximum and averaged speed.

60704-2-4 © IEC:2011 – 15 –
Annexes
The annexes of Part 1 are applicable except as follows:

Annex A
(normative)
This annex of Part 1 is not applicable.

– 16 – 60704-2-4 © IEC:2011
Bibliography
Addition:
IEC 60704-2-6, Household and similar electrical appliances – Test code for the determination
of airborne acoustical noise – Part 2-6: Particular requirements for tumble dryers

___________
– 18 – 60704-2-4 © CEI:2011
SOMMAIRE
AVANT-PROPOS . 20
INTRODUCTION . 22
1 Domaine d’application et objet . 23
1.1 Domaine d’application . 23
1.2 Objet . 23
1.3 Incertitude de mesure . 23
1.101 Écart type pour la déclaration et la vérification . 24
2 Références normatives . 24
3 Termes et définitions . 25
4 Méthodes de mesure et environnements acoustiques . 26
4.2 Méthode directe . 26
4.3 Méthode comparative . 26
5 Appareillage . 26
5.3 Appareillage pour la mesure des conditions de fonctionnement . 26
6 Fonctionnement et emplacement des appareils en essai . 26
6.1 Équipement et conditionnement préalable des appareils . 26
6.2 Alimentation en énergie électrique et en eau ou gaz. 26
6.4 Charge et fonctionnement des appareils lors des essais . 27
6.5 Emplacement et montage des appareils . 27
6.101 Programme d’essai normalisé pour les mesures de bruit . 27
6.102 Charge d’essai normalisée pour les mesures de bruit . 28
7 Mesure des niveaux de pression acoustique . 29
7.1 Disposition des microphones, surface de mesure et position de la SSR dans
les conditions approchant celles du champ libre sur plan(s) réfléchissant(s) . 29
7.4 Mesures . 29
8 Calcul des niveaux de pression acoustique et de puissance acoustique . 29
8.101 Résultat final . 30
9 Informations à enregistrer . 30
9.2 Description de l'appareil en essai . 30
9.7 Alimentation en électricité, en eau, etc. . 30
9.9 Fonctionnement de l'appareil en essai . 30
9.12 Données mesurées . 30
10 Informations à fournir . 31
10.3 Conditions d’essai de l’appareil . 31
10.4 Données acoustiques . 31
Annexes . 32
Annexe A (normative) . 32
Bibliographie . 33

Tableau 101 – Ecarts-types des niveaux de puissance acoustique pour les machines à
laver le linge . 24
Tableau 102 – Ecarts-types des niveaux de puissance acoustique pour les essoreuses
centrifuges . 24
Tableau 103 – Ecarts-types pour la déclaration et la vérification pour les machines à

laver le linge . 24

60704-2-4 © CEI:2011 – 19 –
Tableau 104 – Ecarts-types pour la déclaration et la vérification pour les essoreuses
centrifuges . 24

– 20 – 60704-2-4 © CEI:2011
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
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APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –
CODE D'ESSAI POUR LA DÉTERMINATION DU BRUIT AERIEN –

Partie 2-4: Exigences particulières pour les machines
à laver le linge et les essoreuses centrifuges

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de la CEI. La CEI n'est responsable d'aucun des services effectués par les organismes de
certification indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à se
...