1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22620-6 SANS 14509-1:2009Edition 1ISO 14509-1:2008Edition 1SOUTH AFRICAN NATIONAL STANDARD Small craft Airborne sound emitted by powered r
4、ecreational craft Part 1: Pass-by measurement procedures This national standard is the identical implementation of ISO 14509-1:2008 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag
5、X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 14509-1:2009 Edition 1 ISO 14509-1:2008 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 188, Small craft, in accordance with
6、procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2009. This SANS document supersedes SANS 14509:2008 (edition 1 as modified by ISO amdt 1:2004). Reference numberISO 14509-1:2008(E)ISO 2008INTERNATIONAL STAND
7、ARD ISO14509-1First edition2008-10-01Small craft Airborne sound emitted by powered recreational craft Part 1: Pass-by measurement procedures Petits navires Bruit arien mis par les bateaux de plaisance motoriss Partie 1: Mthodes de mesure pour lessai de passage SANS 14509-1:2009This s tandard may onl
8、y be used and printed by approved subscription and freemailing clients of the SABS .ISO 14509-1:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are e
9、mbedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporat
10、ed. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a p
11、roblem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 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, in
12、cluding photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Publ
13、ished in Switzerland ii ISO 2008 All rights reservedSANS 14509-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 14509-1:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms
14、and definitions. 1 4 Symbols . 3 5 Measurement quantity 3 6 Measurement uncertainty 3 7 Measuring equipment. 5 8 Test site specifications and environmental conditions 5 9 Test course, microphone positions and measurement distance 6 10 Operating conditions 8 11 Test procedure 9 12 Test report . 9 13
15、Standard craft specifications for outboard motor type tests according to Clause 10 10 14 Standard craft specifications for type tests for stern drives with integral exhaust systems according to Clause 10. 11 Annex A (normative) Measurement of the sound exposure level. 12 Annex B (informative) Exampl
16、e of test report form 16 Bibliography . 18 Figures Figure 1 Position of the microphone and test course. 7 Figure 2 Microphone position and heights. 7 Tables Table 1 Standard deviation of reproducibility of individual sources of measurement 4 Table 2 Variability for a coverage probability of 90 %. 4
17、Table 3 Correction for background sound pressure level, LpAS, for monitoring tests. 6 Table 4 Standard craft specifications . 10 Table 5 Standard craft specifications for petrol engines 11 Table 6 Standard craft specifications for diesel engines 11 Table A.1 Standard deviation of reproducibility of
18、individual sources of measurement 12 Table A.2 Variability for a coverage probability of 90 % . 13 Table A.3 Correction for background sound exposure level, LAE, for monitoring tests 14 SANS 14509-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of t
19、he SABS .ISO 14509-1:2008(E) iv ISO 2008 All rights reservedForeword 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 commit
20、tees. 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 In
21、ternational 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 2. The main task of technical committees is to prepare International Standards. Draft International
22、 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 document may be the
23、subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14509-1 was prepared by Technical Committee ISO/TC 188, Small craft. This first edition of ISO 14509-1 cancels and replaces ISO 14509:2000, which has been technically revised. It also incor
24、porates the Amendment ISO 14509:2000/Amd.1:2004. ISO 14509 consists of the following parts, under the general title Small craft Airborne sound emitted by powered recreational craft: Part 1: Pass-by measurement procedures Part 2: Sound assessment using reference craft Part 3: Sound assessment using c
25、alculation and measurement procedures SANS 14509-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO 14509-1:2008(E) ISO 2008 All rights reserved 1Small craft Airborne sound emitted by powered recreational craft P
26、art 1: Pass-by measurement procedures 1 Scope This part of ISO 14509 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, i
27、ncluding inboards, stern drives, personal watercraft (PWC) and outboard motors. It also specifies standard craft based type tests for stern drives with integral exhaust systems and for outboard motors. It also specifies the procedure to be followed if, in addition to the maximum sound pressure level
28、, 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 part of ISO 14509 is engineering grade (grade 2). 2 Normative re
29、ferences The following referenced documents are indispensable for the application 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 8665, Small craft Marine propulsion
30、reciprocating internal combustion engines Power measurements and declarations ISO 8666:2002, Small craft Principal data ISO 10087, Small craft Craft identification Coding system IEC 60942, Electroacoustics Sound calibrators IEC 61672-1, Electroacoustics Sound level meters Part 1: Specifications 3 Te
31、rms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 type test for recreational craft type test measurement performed to prove that the sound of the craft in motion, or of the outboard motor when using a standard craft, or of the stern drive with inte
32、gral exhaust system when using a standard craft, complies with sound specifications or prescribed limits NOTE See also definition of “acceptance test” in ISO 2922. SANS 14509-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 14509-1:2
33、008(E) 2 ISO 2008 All rights reserved3.2 monitoring test for recreational craft monitoring test measurement performed in order to check that the sound of the craft in motion, or of the outboard motor when using any craft, or of the stern drive with integral exhaust system when using any craft, is st
34、ill 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 can also be required in the case of a significant change. NOTE 2 See also definition of “monitoring test” in ISO 2922
35、. 3.3 maximum A-frequency weighted sound pressure level with time weighting S for recreational craft maximum AS-weighted sound pressure level LpASmaxmaximum sound pressure level achieved from measurement of the passage of the craft under specified operating conditions measured with frequency weighti
36、ng 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 EA,Tintegral of the square of the A-weighted sound pressure, p, over a stated time interval or event of duration T (starting at t1and ending at t2) ()212A, AdtTtE ptt=(
37、1) NOTE 1 Unit: pascal squared second, Pa2s. NOTE 2 By practical limitations of the measuring instruments, p2is always understood to denote the square of a frequency-weighted and frequency-band-limited sound pressure. The application of a specific frequency weighting as specified in IEC 61672-1 is i
38、ndicated by an appropriate subscript, e.g. EA,1hdenotes the A-weighted sound exposure over one hour. NOTE 3 When applied to a single event of impulsive or intermittent sound, the quantity is called “single event sound exposure” and the symbol E is used without subscript. NOTE 4 This definition appli
39、es only for the optional measurement of sound exposure levels according to Annex A. NOTE 5 Adapted from ISO/TR 25417:2007, 2.6. 3.5 A-weighted sound exposure level LE,A,Tten times the logarithm to the base 10 of the ratio of the A-weighted sound exposure, EA,T, to a reference value, E0, expressed in
40、 decibels A,A,010 lg dBTETELE=(2) NOTE 1 The reference value, E0, is (20 Pa)2s = 4 1010Pa s. NOTE 2 The application of a specified frequency weighting as specified in IEC 61672-1 is indicated by an appropriate subscript, e.g. LE,A,T,1hdenotes the A-weighted sound exposure level over one hour. SANS 1
41、4509-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 14509-1:2008(E) ISO 2008 All rights reserved 3NOTE 3 When applied to a single event of impulsive or intermittent sound, the quantity is called “single event sound exposure level”
42、and the symbol LEis used without further subscript. NOTE 4 In this part of ISO 14509, the sound exposure level is to characterize the emission of the source and not the noise impact on people exposed to the sound. NOTE 5 This definition applies only for the optional measurement of sound exposure lev
43、el according to Annex A. NOTE 6 Adapted from ISO/TR 25417:2007, 2.6. 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.
44、 3.7 stern-drive propulsion unit with the engine inboard and the transmission/drive located external to the hull 3.8 stern-drive with integral exhaust systems stern-drive where the exhaust gases are expelled through the transmission/drive 4 Symbols LpASmaxmaximum AS-weighted sound pressure level dur
45、ing the passage, expressed in decibels (dB); LpASAS-weighted background sound pressure level, expressed in decibels (dB); LpASmaxLpASmaxafter applying background noise correction according to 8.3 and distance correction according to 9.2, expressed in decibels (dB); LAEA-weighted sound exposure level
46、 during the passage, expressed in decibels (dB); LAEA-weighted background sound exposure level, expressed in decibels (dB); LAELAEafter 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 b
47、e measured during the passage of the craft is the maximum AS-weighted sound pressure level, LpASmax. From this quantity, the maximum AS-weighted sound pressure level, LpASmax, is determined by applying the background noise correction and distance correction, if applicable. 6 Measurement uncertainty
48、The measurement procedure specified in the following clauses is affected by several parameters (e.g. measurement system uncertainty, environmental conditions, craft course uncertainty) that can lead to variation in the level recorded for a given craft. SANS 14509-1:2009This s tandard may only be use
49、d and printed by approved subscription and freemailing clients of the SABS .ISO 14509-1:2008(E) 4 ISO 2008 All rights reservedIn the absence of sufficient experimental data on the overall uncertainty, the uncertainty associated with this part of ISO 14509 has been evaluated by the procedure given in the Guide to the expression of uncertainty in measurement (GUM) (see Bibliography), where each individual source of uncertainty is identified and quantified based upon exist
