SIST EN ISO 2922:2001

SLOVENSKI STANDARD
SIST EN ISO 2922:2001
01-september-2001
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SIST EN 22922:1999
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Acoustics - Measurement of airborne sound emitted by vessels on inland waterways and
harbours (ISO 2922:2000)
Akustik - Messung des von Wasserfahrzeugen auf Binnengewässern und in Häfen
abgestrahlten Luftschalls (ISO 2922:2000)
Acoustique - Mesurage du bruit aérien émis par les bateaux de navigation intérieure et
portuaire (ISO 2922:2000)
Ta slovenski standard je istoveten z: EN ISO 2922:2000
ICS:
03.220.40 Vodni transport Transport by water
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
SIST EN ISO 2922:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2922:2001

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SIST EN ISO 2922:2001

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SIST EN ISO 2922:2001

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SIST EN ISO 2922:2001
INTERNATIONAL ISO
STANDARD 2922
Second edition
2000-11-01
Acoustics — Measurement of airborne
sound emitted by vessels on inland
waterways and harbours
Acoustique — Mesurage du bruit aérien émis par les bateaux de navigation
intérieure et portuaire
Reference number
ISO 2922:2000(E)
©
ISO 2000

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SIST EN ISO 2922:2001
ISO 2922:2000(E)
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ii © ISO 2000 – All rights reserved

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SIST EN ISO 2922:2001
ISO 2922:2000(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Measurement quantities.3
5 Measurement uncertainty .3
6 Measuring equipment.4
6.1 Equipment specifications .4
6.2 Windscreen.4
6.3 Equipment calibration .4
7 Test site specifications and environmental conditions.5
7.1 Test conditions .5
7.2 Test site specifications .5
7.3 Environmental conditions.5
7.4 Background noise.5
7.5 Measurements on stationary vessels.6
8 Test course and measurement of distance.6
9 Operating conditions.7
9.1 Distance from microphone .7
9.2 Loading condition.7
9.3 Main engines .7
9.4 Auxiliary engines .7
9.5 Doors and windows.7
9.6 Monitoring tests.7
10 Microphone position .7
11 Test procedure.8
11.1 Moving vessels .8
11.2 Stationary vessels .9
12 Test report .9
Bibliography.10
© ISO 2000 – All rights reserved iii

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SIST EN ISO 2922:2001
ISO 2922:2000(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 2922 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee
SC 1, Noise.
This second edition cancels and replaces the first edition (ISO 2922:1975), which has been technically revised.
iv © ISO 2000 – All rights reserved

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SIST EN ISO 2922:2001
INTERNATIONAL STANDARD ISO 2922:2000(E)
Acoustics — Measurement of airborne sound emitted by vessels
on inland waterways and harbours
1 Scope
This International Standard specifies the conditions for obtaining reproducible and comparable measurement
results of the airborne sound emitted by vessels of all kinds on inland waterways and in ports and harbours, except
powered recreational craft as specified in ISO 14509. This International Standard is applicable to small sea-going
vessels, harbour vessels, dredgers, and all watercraft including non-displacement craft, used or capable of being
used as a means of transport on water.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
IEC 60942, Electroacoustics — Sound calibrators.
IEC 61260, Electroacoustics — Octave-band and fractional-octave-band filters.
1)
IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications.
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
acceptance test for vessels
acceptance test
measurement performed to prove that the sound emitted by the vessel, stationary or in motion, as delivered by the
manufacturer, complies with noise specifications or prescribed limits
3.2
monitoring test for vessels
monitoring test
measurement performed in order to check that the sound emitted by the vessel, stationary or in motion, is still
within prescribed limits and that no noticeable changes have occurred since the acceptance on initial delivery or
after modification, as applicable
1) To be published. (Revision of IEC 60651 and IEC 60804)
© ISO 2000 – All rights reserved 1

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SIST EN ISO 2922:2001
ISO 2922:2000(E)
3.3
maximum AS-weighted sound pressure level for vessels
maximum AS-weighted sound pressure level
L
pASmax
maximum sound pressure level achieved from measurement during the passage of the vessel under specified
operating conditions measured with frequency weighting A and with time weighting S according to IEC 61672-1
NOTE It is expressed in decibels (dB).
3.4
A-weighted sound exposure
E
A
time integral of squared, instantaneous, A-weighted sound pressure over a stated time interval or event
2
NOTE 1 It is expressed in pascal-squared seconds (Pa �s).
NOTE 2 In symbols, the A-weighted sound exposure, E , of a specified event (e.g. the passage of a craft) is represented by
A
t
2
2
Ep� ��t dt
AA
�
t
1
2
where p (t) is the squared, instantaneous, A-weighted sound pressure as a function of running time t for an integration time
A
starting at t and ending at t (see 11.1.1).
1 2
3.5
A-weighted sound exposure level
L
AE
ten times the logarithm to the base 10 of the ratio of an A-weighted sound exposure, E , to the reference sound
A
exposure, E , given by the product of the square of the reference sound pressure of p =20�Pa and the sound
0 0
2 –10 2
exposure reference duration of T =1 s, (E = p � T =4� 10 Pa �s)
0 0 0 0
NOTE 1 It is expressed in decibels (dB).
NOTE 2 In symbols, the A-weighted sound exposure level, L , of a specified event (e.g. the passage of a vessel) with the
AE
duration T = t – t , is related to a corresponding measurement of the time-averaged A-weighted sound pressure level, L ,
2 1 pAeq,T
by
��t
��
2
��
��2
pt� dt
�
A
�
��
��
t �� � �
���� ET
��1
A
LL��10 lg dB 10 lg dB�� 10 lg dB
��
AAEpeq,T
�� � �
2
��ET� �
pT
00
��00
��
��
��
2
where p (t) is the squared, instantaneous, A-weighted sound pressure as a function of running time t.
A
NOTE 3 The A-weighted sound exposure level L is arithmetically identical to the single-event sound pressure level L
AE p,1s
(reference duration T = 1 s) as, for example, defined in ISO 3744.
0
NOTE 4 The abbreviation "SEL" is sometimes used for the single-event sound pressure level, L .
p,1s
NOTE 5 In this International Standard, the sound exposure level is to characterize the emission of the source and not the
noise impact on people exposed to the sound.
2 © ISO 2000 – All rights reserved

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SIST EN ISO 2922:2001
ISO 2922:2000(E)
3.6
background noise for vessels
background noise
noise from all sources other than the craft under test
EXAMPLE Noise from waves splashing on the measuring craft or the shore, other craft or equipment, and wind effects.
4 Measurement quantities
4.1 Frequency weighting A shall be used for all measurements.
4.2 Care should be taken to avoid any influence on the result from unwanted sound signals, for example noise
from wind on the microphone of the measuring equipment, electrical interference, or extraneous sound sources not
under consideration.
4.3 The quantities to be determined at all microphone positions in acceptance and monitoring tests are the
A-weighted sound exposure level, L , received from the operation of vessel and the maximum AS-weighted sound
AE
pressure level, L , both expressed in decibels.
pASmax
4.4 If, in addition to the sound exposure level, spectral analysis in acceptance tests or determination of some
special acoustical characteristics of vessels is needed, the quantities to be measured are the unweighted or
C-frequency weighted, octave-band or one-third-octave-band S-time weighted sound pressure levels in decibels at
the time of maximum sound pressure, or the unweighted or C-frequency weighted, octave-band or one-third-
octave-band sound exposure levels in decibels.
4.5 When measurements are made at some distance from the source, the levels observed may be considerably
affected by the weather conditions. For example, the attenuation of sound due to air absorption is affected by the
temperature and humidity of the air. In addition the refraction of sound waves due to wind and temperature
gradients will affect the levels received at a particular position. It is recommended that measurements taken in
extreme or atypical conditions be avoided. If possible, a value obtained under typical climatic conditions, and an
indication of the range of values obtained under other climatic conditions, should be included in the test report.
4.6 For steady-state noise, as that from a stationary ship's engine, the quantity to be measured is the time-
averaged A-weighted sound pressure level, L .
pAeq
5 Measurement uncertainty
Table 1 lists the likely sources of uncertainty and estimates of the standard deviation associated with each based
on experience. These sources of uncertainty are considered to be independent for each measurement type.
Therefore, the estimated total standard uncertainty is given by the square root of the sum of the squares of the
individual standard deviations contained in Table 1.
© ISO 2000 – All rights reserved 3

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SIST EN ISO 2922:2001
ISO 2922:2000(E)
Table 1 — Standard deviation of reproducibility
Values in decibels
In
...