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1、INTERNATIONAL STANDARD IS0 14509 First edition 2000-1 1-01 AMENDMENT 1 2004-09-1 5 Small craft - Measurement of airborne sound emitted by powered recreational craft AMENDMENT 1 Petits navires - Mesurage du bruit arien mis par les navires de plaisance motoriss AMENDEMENT 1 Reference number IS0 14509:
2、2000/Amd.l:2004(E) IS0 2004 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 14509: 2000/Amd
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6、n below. O IS02004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IS0 at the address below or ISOs member
7、 body in the country of the requester. IS0 copyright office Case postale 56 CH-I211 Geneva 20 Tel. + 41 22 749 O 1 11 Fax +41 227490947 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provide
8、d by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 14509: 2000/Amd. 1 : 2004( E) Foreword IS0 (the International Organization for Standardization) is a worldw
9、ide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on th
10、at committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (i EC) on all matters of electrotechnical standardization. International Standards are drafted in
11、 accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard
12、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 document may be the subject of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. Amendment 1 to IS0 14509:2000
13、 was prepared by Technical Committee ISOTC 188, Small craff. O IS0 2004 -All rights reserved iii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or ne
14、tworking permitted without license from IHS -,-,- IS0 14509: 2000/Amd. 1 : 2004( E) Introduction Based on a request from ICOMIA (International Council of Marine Industry Associations), it was decided to prepare an amendment to include type testing of stern drives with integral exhaust systems in con
15、junction with standard craft. iv O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or networking permitted without licen
16、se from IHS -,-,- IS0 14509: 2000/Amd. 1 : 2004( E) Small craft - Measurement of airborne sound emitted by powered recreational craft AMENDMENT 1 Page iii, Contents Add the following new lines after: “13 Standard craft specifications for outboard motor .” 14 Standard craft specifications for type te
17、sts for stern drives with integral exhaust systems according to clause 10 Page 1, clause 1 Replace the existing text with the following (new text is shaded) 1 Scope This International Standard specifies the conditions for obtaining reproducible and comparable measurement results of the maximum sound
18、 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, . Annex A specifies the procedure to be followed if, in addition to the maximum sound pressure level, the determination of the sound exposure le
19、vel is desired. NOTE The accuracy grade of the acoustical test procedures specified in this International Standard is engineering grade (grade 2) as defined in IS0 12001. See also clause 6. For craft other than those specified above, IS0 2922 is applicable for sound emission measurements. Page 1, cl
20、ause 2 Replace IS0 8665 with the following: IS0 8665, Small craft - Marine propulsion reciprocating internal combustion engines - Power measurements and declarations Delete footnote 1) after IEC 61672-1. Page 2 , definition 3.1 Replace the existing text with the following (new text is shaded): 3.1 t
21、ype 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, complies with sound specifications or prescribed limits NOTE See also definition of “acceptance test” in IS0 2922. O IS0 2004 -All rights reserv
22、ed 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 14509: 2000/Amd. 1 : 2004( E) Page 2,
23、definition 3.2 Replace the existing text with the following (new text is shaded): 3.2 monitoring test for recreational 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 not
24、iceable 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 IS0 2922. Page 3, clause 3 Add the following new 3.7
25、 and 3.8 after 3.6. 3.7 stern drive any propulsion unit with the engine inboard and the transmission/drive located external to the hull 3.8 stern drive with integral exhaust systems any stern drive placed on the market as a complete unit where the exhaust gases are expelled through the transmission/
26、drive Page 7, clause 10 Add a new sentence to the 4th paragraph of clause 10 (new text is shaded). Page 9, clause 12 i) Amend the first line of 12 i) as follows (new text is shaded): . i) data for the craft or the standard craft according to clause 13 $ LE the A-weighted sound exposure level during
27、the passage, expressed in decibels (dB); LE the A-weighted background sound exposure level, expressed in decibels (dB); LAE LE after applying background noise correction according to A.5 and distance correction according to A.6, expressed in decibels (dB). 5 Measurement quantity The quantity to be m
28、easured during the passage of the craft is the maximum AS-weighted sound pressure level, LhASmax. From this quantity, the maximum AS-weighted sound pressure level L,ASmax is determined by applying the background noise correction and distance correction, if applicable. O IS0 2000 - All rights resewed
29、 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-ISO L4509-ENGL 2000 m 4851903 0049073 37
30、5 Individual sources of uncertainty IS0 14509:2000(E) Individual standard deviations of the maximum AS-weighted sound pressure level, LASmax dB 6 Measurement uncertainty Table 1 lists the likely sources of uncertainty and estimates of the standard devation associated with each, based on experience.
31、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. Distance effects 0,25 Measuring equipment Sou
32、nd propagation conditions Waves, currents and tides Operator) effects Test site variations 1 Operating conditions I Estimated total standard uncertainty 1 ,o 1,5 1 5 02 1 ,o 03 2,6 7 Measuring equipment 7.1 Equipment specifications The instrumentation system, including microphones and cables (which
33、shall be used according to the manufacturers 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 levei recorder, shall meet the requirements for a
34、 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
35、within _+ 10 % shall be used. An engine speed tachometer which is accurate to within k 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
36、 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 c
37、ompliance 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 O IS0 2000 - Al
38、l rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-IS0 i11509-ENGL 2000 1185
39、1903 08q9094 221 W IS0 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 faades, rocks, bridges) from which sound can be refle
40、cted 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
41、. 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; - wi
42、nd speed less than 5 m/s measured at the microphone height; - calm water; .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 w
43、ater; .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;,!,s, shall be at least 10dB below the maxim
44、um AS-weighted sound pressure level, LAmax, obtained during the passage of the craft. 8.3.3 Monitoring tests For monitoring tests, the AS-weighted background sound pressure level, L A s , shall be at least 6 dB below the maximum AS-weighted sound pressure level, L ; , A s , obtained during the passa
45、ge of the craft. The reading shall then be corrected as shown in Table 2. O IS0 2000 - All rights reserved 5 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/16/2007 21:28:05 MDTNo reprod
46、uction or networking permitted without license from IHS -,-,- STDmISO 14509-ENGL 2000 m 4851903 08Li9095 Lb8 = IS0 14509:2000(E) Increase in the indication of the AS-weighted sound pressure level obtained during the passage of the craft (!-;ASrnax - L7)AS) 2 10 6 to 9 Table 2 - Correction for backgr
47、ound sound pressure level, L;As, for monitoring tests Values in decibels Correction to be applied to the reading of the AS-weighted sound pressure level, L,ASmax, obtained during the passage of the craft O - 1 9 Test course, microphone positions and measurement distance 9.1 General 9.1.1 The test co
48、urse to be followed shall be a straight line which is perpendicular within $r 5“ to a line through the microphone axis (see Figure 1). 1 Dimensions in metres 1, - , A s , shall be normalized to 25 m by subtracting 5 dB to obtain the 25 m value for NOTE IMEC 17 F/O1 and IMEC 17 F/02; see bibliography). The value of 5 dB has been found appropriate from the results of many tests under similar conditions (e.g. 10 Operating conditions Craft shall be operated with an equivalent two-person load and a minimum