kSIST FprEN ISO 2922:2020

SLOVENSKI STANDARD
oSIST prEN ISO 2922:2019
01-oktober-2019
Akustika - Merjenje zvoka plovil v zraku na kopenskih vodnih poteh in v
pristaniščih (ISO/DIS 2922:2019)

Acoustics - Measurement of airborne sound emitted by vessels on inland waterways and

Acoustique - Mesurage du bruit aérien émis par les bateaux de navigation intérieure et

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Acoustique — Mesurage du bruit aérien émis par les bateaux de navigation intérieure et portuaire

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Measurement quantities .............................................................................................................................................................................. 3

5 Measuring equipment ..................................................................................................................................................................................... 3

5.1 Equipment specifications .............................................................................................................................................................. 3

5.2 Windscreen ................................................................................................................................................................................................ 3

5.3 Operational check/Calibration .................................................................................................................................................. 4

5.4 Verification ................................................................................................................................................................................................. 4

6 Test site specifications and environmental conditions ................................................................................................ 4

6.1 Test conditions ........................................................................................................................................................................................ 4

6.2 Test site specifications ...................................................................................................................................................................... 4

6.2.1 Moving vessels ................................................................................................................................................................... 4

6.2.2 Stationary vessels ........................................................................................................................................................... 5

6.3 Environmental conditions ............................................................................................................................................................. 5

6.4 Background noise ................................................................................................................................................................................. 5

6.4.1 Acceptance tests ............................................................................................................................................................... 5

6.4.2 Monitoring tests ............................................................................................................................................................... 5

6.5 Measurements on stationary vessels ................................................................................................................................... 6

7 Test course and measurement of distance ................................................................................................................................ 6

8 Operating conditions ....................................................................................................................................................................................... 6

8.1 Distance from microphone ........................................................................................................................................................... 6

8.2 Loading condition ................................................................................................................................................................................. 7

8.3 Main engines ............................................................................................................................................................................................. 7

8.4 Auxiliary engines ................................................................................................................................................................................... 7

8.5 Doors and windows ............................................................................................................................................................................ 7

8.6 Monitoring tests ..................................................................................................................................................................................... 7

9 Microphone position ........................................................................................................................................................................................ 7

10 Test procedure ........................................................................................................................................................................................................ 8

10.1 Moving vessels......................................................................................................................................................................................... 8

10.2 Stationary vessels ................................................................................................................................................................................. 9

11 Measurement uncertainty .......................................................................................................................................................................... 9

12 Test report ................................................................................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................12

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This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.

This third edition cancels and replaces the second edition (ISO 2922:2000), which has been technically

The important change to the previous edition was to affirm its application to vessels of all sizes. This

third edition also includes a series of small changes such as: the specification of sound pressure level

measurement response (slow), integration time for background noise (5 minutes), and the surf/weather

limitation (Sea State 1) during the survey period. An equation to compute the sound pressure level at

This document 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 the ISO 14509 series. This document is applicable to

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. There are no limitations to the application of

All noise data obtained in accordance with this document are referred to a reference distance of 25 m.

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.

ISO 1996-2:2017, Acoustics — Description, measurement and assessment of environmental noise — Part 2:

ISO/IEC Guide 98-3:2008, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in

ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories

IEC 61183, Electroacoustics — Random-incidence and diffuse-field calibration of sound level meters

IEC 61260-1, Electroacoustics — Octave-band and fractional-octave-band filters — Part 1: Specifications

IEC 61260-3, Electroacoustics — Octave-band and fractional-octave-band-filters — Part 3: Periodic tests

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

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

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

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 Slow (S)

integral of the square of the sound pressure, p, over a stated time interval or event of duration T

ten times the logarithm to the base 10 of the ratio of the A-weighted sound exposure, E , to a reference

value, E , which is given by the product of the square of the reference sound pressure of p = 20 μPa and

Note 2 to entry: In symbols, the A-weighted sound exposure level, L , of a specified event (e.g. the passage of a

vessel) with the duration T = t − t , is related to a corresponding measurement of the time-averaged A-weighted

where p (t) is the squared, instantaneous, A-weighted sound pressure as a function of running time t.

Note 3 to entry: The A-weighted sound exposure level L is arithmetically identical to the A-weighted single-

event sound pressure level L (reference duration T = 1 s) as, for example, defined in ISO 3744 .

Note 4 to entry: The abbreviation "SEL" is sometimes used for the single-event sound pressure level, L .

Note 5 to entry: In this document, the sound exposure level is to characterize the emission of the source and not

EXAMPLE Noise from waves splashing on the measuring craft or the shore, other craft or equipment, and

4.1 Frequency weighting A shall be used for all measurements. The time weighting shall be set to Slow

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

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

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

4.6 For steady-state noise, as that from a stationary ship's engine, the quantity to be measured is the

The instruments for measuring sound pressure levels, including microphone(s) as well as cable(s),

recording devices and other accessories, if used, shall meet the requirements for a class 1 instrument

according to IEC 61672-1 for free field or random incidence application, as appropriate. Filters shall

An engine speed tachometer with a maximum permissible error of ±50 r/min shall be used.

A suitable windscreen shall be used to reduce the influence of wind on the reading. When it can be

expected that the wind-induced signal will be within 10 dB of the average sound level induced by the