SIST EN ISO 14509:2001
(Main)Small craft - Measurement of airborne sound emitted by powered recreational craft (ISO 14509:2000)
Small craft - Measurement of airborne sound emitted by powered recreational craft (ISO 14509:2000)
Kleine Wasserfahrzeuge - Messung des von motorgetriebenen Sportbooten abgestrahlten Luftschalls (ISO 14509:2000)
Diese Internationale Norm legt die Bedingungen für reproduzierbare und vergleichbare Messungen des maximalen Schalldruckpegels fest, der während der Vorbeifahrt von motorgetriebenen Sportbooten von bis zu 24 m Länge erzeugt wird. Eingeschlossen sind Boote mit Einbaumotor, Boote mit Z-Antrieb, Wasserskooter und Außenbordmotoren in Verbindung mit einem Normboot. In Anhang A ist ein Verfahren beschrieben, nach welchem der Schallexpositionspegel zu messen ist, falls dessen Bestimmung zusätzlich zum maximalen Schalldruckpegel gewünscht ist. ANMERKUNG Für Schallemissionsmessungen an anderen als den oben beschriebenen Booten ist
ISO 2922 anzuwenden. Das in dieser Internationalen Norm beschriebene akustische Messverfahren ist von der Genauigkeitsklas-se
"Laborverfahren" (Genauigkeitsklasse 2), die in ISO 12001 definiert ist. Siehe auch Abschnitt 6.
Petits navires - Mesurage du bruit aérien émis par les navires de plaisance motorisés (ISO 14509:2000)
Mala plovila - Merjenje zvoka v zraku, ki ga oddajajo motorizirana rekreacijska plovila (ISO 14509:2000)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 14509:2001
01-junij-2001
Mala plovila - Merjenje zvoka v zraku, ki ga oddajajo motorizirana rekreacijska
plovila (ISO 14509:2000)
Small craft - Measurement of airborne sound emitted by powered recreational craft (ISO
14509:2000)
Kleine Wasserfahrzeuge - Messung des von motorgetriebenen Sportbooten
abgestrahlten Luftschalls (ISO 14509:2000)
Petits navires - Mesurage du bruit aérien émis par les navires de plaisance motorisés
(ISO 14509:2000)
Ta slovenski standard je istoveten z: EN ISO 14509:2000
ICS:
17.140.30
47.080
SIST EN ISO 14509:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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INTERNATIONAL ISO
STANDARD 14509
First edition
2000-11-01
Small craft — Measurement of airborne
sound emitted by powered recreational
craft
Petits navires — Mesurage du bruit aérien émis par les navires de
plaisance motorisés
Reference number
ISO 14509:2000(E)
©
ISO 2000
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ISO 14509:2000(E)
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ii © ISO 2000 – All rights reserved
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ISO 14509:2000(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Symbols .3
5 Measurement quantity.3
6 Measurement uncertainty .4
7 Measuring equipment.4
7.1 Equipment specifications .4
7.2 Equipment calibration .4
8 Test site specifications and environmental conditions.5
8.1 Test site specifications .5
8.2 Environmental conditions.5
8.3 Background noise.5
9 Test course, microphone positions and measurement distance .6
9.1 General.6
9.2 Distance correction .7
10 Operating conditions.7
11 Test procedure.8
12 Test report .8
13 Standard craft specifications for outboard motor type tests according to clause 10.10
Annex A (normative) Measurement of the sound exposure level.11
Annex B (informative) Example of test report form.14
Bibliography.16
© ISO 2000 – All rights reserved iii
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ISO 14509:2000(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 14509 was prepared by Technical Committee ISO/TC 188, Small craft.
Annex A forms a normative part of this International Standard. Annex B is for information only.
iv © ISO 2000 – All rights reserved
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INTERNATIONAL STANDARD ISO 14509:2000(E)
Small craft — Measurement of airborne sound emitted by powered
recreational craft
1 Scope
This International Standard specifies the conditions for obtaining reproducible and comparable measurement
results of the maximum sound pressure level of airborne sound generated during the passage of powered
recreational craft of up to 24 m length of hull, including inboards, stern drives, personal watercraft (PWC) and
outboard motors used in conjunction with a standard craft.
Annex A specifies the procedure to be followed if, in addition to the maximum sound pressure level, the
determination of the sound exposure level is desired.
NOTE For craft other than those specified above, ISO 2922 is applicable for sound emission measurements.
The accuracy grade of the acoustical test procedures specified in this International Standard is engineering grade
(grade 2) as defined in ISO 12001. See also clause 6.
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.
ISO 8665, Small craft — Marine propulsion engines and systems — Power measurements and declarations.
ISO 10087, Small craft — Hull identification — Coding system.
ISO 12001, Acoustics — Noise emitted by machinery and equipment — Rules for the drafting and presentation of a
noise test code.
1)
IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications.
IEC 60942, Electroacoustics — Sound calibrators.
1) To be published. (Revision of IEC 60651 and IEC 60804)
© ISO 2000 – All rights reserved 1
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ISO 14509:2000(E)
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
type test for recreational craft
measurement performed to prove that the sound of the craft in motion, or of the outboard motor when using a
standard craft, as delivered by the manufacturer, complies with sound specifications or prescribed limits
NOTE See also definition of "acceptance test" in ISO 2922.
3.2
monitoring test for reacreational craft
measurement performed in order to check that the sound of the craft in motion, or of the outboard motor when
using any craft, is still within prescribed limits and that no noticeable changes have occurred since the acceptance
on initial delivery or after modification, as applicable
NOTE 1 Subsequent type testing may also be required in the case of a significant change.
NOTE 2 See also definition of "monitoring test" in ISO 2922.
3.3
maximum AS-weighted sound pressure level for recreational craft
maximum AS-weighted sound pressure level
L
pASmax
maximum sound pressure level achieved from measurement of the passage of the craft under specified operating
conditions measured with frequency weighting A and with time weighting S (slow) 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 (1)
��
AA
�
t
1
2
wherept 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 A.7.2).
1 2
NOTE 3 This definition applies only for the optional measurement of sound exposure level according to annex A.
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).
2 © ISO 2000 – All rights reserved
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ISO 14509:2000(E)
NOTE 2 In symbols, the A-weighted sound exposure level, L , of a specified event [e.g. the passage of a vessel (see
AE
A.7.2)] with the duration T = t – t , is related to a corresponding measurement of time-averaged A-weighted sound pressure
2 1
level, L by
pAeq,T
��t
��
2
����2
pt dt
� �
A
���
��
�� � �
����t ET
1
�� A
LL��10 lg dB 10 lg dB�� 10 lg dB (2)
��
AAEpeq,T
�� � �
2
��ET� �
pT
00
��00
��
��
��
2
wherept� 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
p,1s
AE
(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.
NOTE 6 This definition applies only for the optional measurement of sound exposure level according to annex A.
3.6
background noise for recreational craft
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 Symbols
The following symbols are used in this International Standard:
L� the maximum AS-weighted sound pressure level during the passage, expressed in decibels (dB);
pASmax
L�� the AS-weighted background sound pressure level, expressed in decibels (dB);
pAS
L L� after applying background noise correction according to 8.3 and distance correction
pASmax
pASmax
according to 9.2, expressed in decibels (dB);
L� the A-weighted sound exposure level during the passage, expressed in decibels (dB);
AE
L�� the A-weighted background sound exposure level, expressed in decibels (dB);
AE
L L� after applying background noise correction according to A.5 and distance correction
AE AE
according to A.6, expressed in decibels (dB).
5 Measurement quantity
The quantity to be measured during the passage of the craft is the maximum AS-weighted sound pressure level,
L� .
pASmax
From this quantity, the maximum AS-weighted sound pressure level L is determined by applying the
pASmax
background noise correction and distance correction, if applicable.
© ISO 2000 – All rights reserved 3
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ISO 14509:2000(E)
6 Measurement uncertainty
Table 1 lists the likely sources of uncertainty and estimates of the standard devation 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.
Table 1 — Standard deviation of reproducibility
Individual standard deviations of the
maximum AS-weighted sound pressure
Individual sources of uncertainty
level, L
ASmax
dB
Distance effects 0,25
Measuring equipment 1,0
Sound propagation conditions 1,5
Waves, currents and tides 1,5
Operator(s) effects 0,2
Test site variations 1,0
Operating conditions 0,5
Estimated total standard uncertainty 2,6
7 Measuring equipment
7.1 Equipment specifications
The instrumentation system, including microphones and cables (which shall be used according to the
manufacturer's specifications), and including the windscreen recommended by the manufacturer and the overall
electroacoustic performance of any additional measuring equipment, including for example a tape recorder and/or
level recorder, shall meet the requirements for a type 1 instrument specified in IEC 61672-1.
NOTE Sound level meters with "maximum hold" capabilities are preferred.
When a tape recorder is used for the measurements, the dynamic range of the instrumentation shall be consistent
with the measured signal.
A wind speed anemometer which is accurate to within � 10 % shall be used.
An engine speed tachometer which is accurate to within � 50 r/min shall be used.
7.2 Equipment calibration
A sound calibrator which meets the requirements of IEC 60942 shall be used.
The overall acoustic performance of the measurement equipment shall be checked with the sound calibrator
according to the instructions of its manufacturer at the beginning and at the end of each series of measurements,
and at least at the beginning and end of each measurement day.
At intervals of no longer than 2 years, the sound level meter shall undergo laboratory verification for compliance
with IEC 60651. The date of the last verification of the compliance with IEC 61672-1 shall be recorded.
The sound calibrator used for calibration of the sound level meter shall undergo laboratory verification every year
with traceability to a primary standards laboratory.
4 © ISO 2000 – All rights reserved
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ISO 14509:2000(E)
8 Test site specifications and environmental conditions
8.1 Test site specifications
Within 30 m around the craft under test and the microphone, there shall be no large surfaces (e.g. retaining walls,
building façades, rocks, bridges) from which sound can be reflected back to the microphone.
In the vicinity of the microphone, there shall be no obstacles which could disturb the sound field. Therefore, no
person shall be between the microphone and the sound source, and any observers shall be in such a position that
any influence on the meter reading is avoided.
The area between the craft under test and the measurement microphone shall be open water, free from any sound
absorbing or sound reflecting objects.
8.2 Environmental conditions
8.2.1 Planing craft
The measurements shall be performed under the following conditions:
� absence of precipitation;
� wind speed less than 5 m/s measured at the microphone height;
� calm water; i.e. wave height less than 100 mm.
8.2.2 Non-planing craft
The measurements shall be performed under the following conditions:
� absence of precipitation;
� wind speed less than 7 m/s measured at the microphone height;
� calm water; i.e. wave height less than 200 mm.
8.3 Background noise
8.3.1 General
A measurement shall be invalid if changes in the background noise affect the applicable reading.
8.3.2 Type tests
For type tests, the AS-weighted background sound pressure level, L�� , shall be at least 10 dB below the
pAS
maximum AS-weighted sound pressure level, L� , obtained during the passage of the craft.
pASmax
8.3.3 Monitoring tests
For monitoring tests, the AS-weighted background sound pressure level, L�� , shall be at least 6 dB below the
pAS
maximum AS-weighted sound pressure level, L� , obtained during the passage of the craft. The reading shall
pASmax
then be corrected as shown in Table 2.
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ISO 14509:2000(E)
Table 2 — Correction for background sound pressure level, L�� , for monitoring tests
pAS
Values in decibels
Increase in the indication of the AS-weighted sound Correction to be applied to the reading of the AS-weighted
pressure level obtained during the passage of the craft
sound pressure level, L� , obtained during
pASmax
LL���� the passage of the craft
��
ppASmax AS
W 10 0
6to9 – 1
9 Test course, microphone positions and measurement distance
9.1 General
9.1.1 The test course to be followed shall be a straight line which is perpendicular within � 5° to a line through the
microphone axis (see Figure 1).
Dimensions in metres
Key
1Craft
2 Microphone
3 Microphone axis
4 Craft course line
Figure 1 — Position of the microphone and test course
9.1.2 The microphone shall be positioned at 3,5 m � 0,5 m above the water surface and, if mounted on a solid
surface, shall be positioned at least 1,2 m above that surface. The microphone shall be positioned within � 0,5 m of
the edge of the surface above which it is mounted.
Figure 2 shows the heights of the microphone position.
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ISO 14509:2000(E)
Dimensions in metres
Key
1Craft
2 Microphone
3 Microphone axis
Figure 2 — Microph
...
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