1、National Standard of CanadaCAN/CSA-ISO 1996-3:05(ISO 1996-3:1987)International Standard ISO 1996-3:1987 (first edition, 1987-12-15) has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO 1996-3:05, which has been approved as a NationalStandard of Canada by the Standards Council of Ca
2、nada.ISBN 1-55397-824-2 February 2005Reference numberISO 1996-3:1987(E)Acoustics Description and measurementof environmental noise Part 3:Application to noise limitsAcoustique Caractrisation et mesurage du bruit de lenvironnement Partie 3 : Application aux limites de bruitThe Canadian Standards Asso
3、ciation (CSA), under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membership association engaged in standards development and
4、certification activities. CSA standards reflect a national consensus of producers and users including manufacturers, consumers, retailers, unions and professional organizations, and governmental agencies. The standards are used widely by industry and commerce and often adopted by municipal, provinci
5、al, and federal governments in their regulations, particularly in the fields of health, safety, building and construction, and the environment. Individuals, companies, and associations across Canada indicate their support for CSAs standards development by volunteering their time and skills to CSA Co
6、mmittee work and supporting the Associations objectives through sustaining memberships. The more than 7000 committee volunteers and the 2000 sustaining memberships together form CSAs total membership from which its Directors are chosen. Sustaining memberships represent a major source of income for C
7、SAs standards development activities. The Association offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of its certification process, the Association regularly and continually audits and inspects products that
8、 bear the CSA Mark. In addition to its head office and laboratory complex in Toronto, CSA has regional branch offices in major centres across Canada and inspection and testing agencies in eight countries. Since 1919, the Association has developed the necessary expertise to meet its corporate mission
9、: CSA is an independent service organization whose mission is to provide an open and effective forum for activities facilitating the exchange of goods and services through the use of standards, certification and related services to meet national and international needs.For further information on CSA
10、 services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaThe Standards Council of Canada is the coordinating body of the National Standards system, a federation of independent, autonomous organizations working towards the further development and
11、 improvement of voluntary standardization in the national interest. The principal objects of the Council are to foster and promote voluntary standardization as a means of advancing the national economy, benefiting the health, safety, and welfare of the public, assisting and protecting the consumer,
12、facilitating domestic and international trade, and furthering international cooperation in the field of standards. A National Standard of Canada is a standard which has been approved by the Standards Council of Canada and one which reflects a reasonable agreement among the views of a number of capab
13、le individuals whose collective interests provide to the greatest practicable extent a balance of representation of producers, users, consumers, and others with relevant interests, as may be appropriate to the subject in hand. It normally is a standard which is capable of making a significant and ti
14、mely contribution to the national interest. Approval of a standard as a National Standard of Canada indicates that a standard conforms to the criteria and procedures established by the Standards Council of Canada. Approval does not refer to the technical content of the standard; this remains the con
15、tinuing responsibility of the accredited standards development organization. Those who have a need to apply standards are encouraged to use National Standards of Canada whenever practicable. These standards are subject to periodic review; therefore, users are cautioned to obtain the latest edition f
16、rom the organization preparing the standard.The responsibility for approving National Standards of Canada rests with theStandards Council of Canada270 Albert Street, Suite 200Ottawa, Ontario, K1P 6N7CanadaCette Norme nationale du Canada est offerte en anglais et en franais.Although the intended prim
17、ary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationCAN/CSA-ISO 1996-3:05Acoustics Description and measurement of e
18、nvironmentalnoise Part 3: Application to noise limitsFebruary 2005 Canadian Standards Association CSA/1CAN/CSA-ISO 1996-3:05Acoustics Description and measurement of environmental noise Part 3: Application to noise limitsCSA PrefaceThis is the first edition of CAN/CSA-ISO 1996-3, Acoustics Descriptio
19、n and measurement of environmental noise Part 3: Application to noise limits, which is an adoption without modification of the identically titled ISO (International Organization for Standardization) Standard 1996-3 (first edition, 1987-12-15).This Standard was reviewed for Canadian adoption by the C
20、SA Technical Committee on Acoustics and Noise Control, under the jurisdiction of the Strategic Steering Committee on the Environment, and has been formally approved by the Technical Committee. A list of the members of the Technical Committee is available upon request. This Standard has been approved
21、 as a National Standard of Canada by the Standards Council of Canada.February 2005 Canadian Standards Association 2005All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO material is reprinted with permission. Whe
22、re the words “this International Standard” appear in the text, they should be interpreted as “this National Standard of Canada”.Inquiries regarding this National Standard of Canada should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61
23、-800-463-6727 416-747-4044www.csa.caINTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXP,YHAPOAHAfl OPTAHM3AMfl i-l0 CTAH)JAPTM3AL/MM Acoustics - Description and measurement of environmental noise - Part 3 : Application to noise limi
24、ts , Acoustique - Caractkrisation et mesurage du bruit de lenvironnemen t - Partie 3 : Applica tion aux limites de bruit ISO 1996-3 First edition 1987-12-15 Reference number ISO 1996-3: 1987 (E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national S
25、tandards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International
26、organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are appr
27、oved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 1996-3 was prepared by Technical Committee ISO/TC 43, A cous tics. ISO 1996-3 together with ISO 1996-1 : 1982 and ISO 1996-2 : 1987 cancel and replace ISO Recommendation R
28、1996 : 1971, of which they constitute a technical revision. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. 0 International Organkation fo
29、r Standardkation, 1987 Printed in INTERNATIONAL STANDARD ISO 1996-3: 1987 (EI Acoustics - Description and measurement of . environmental noise - Part 3 : Application to noise limits 0 Introduction 0.1 ISO 1996 comprises the following three Parts : 3 Definitions For the purposes of this part of ISO 1
30、996, the definitions given in ISO 1996-1 apply. Part 1 : Basic quantities and procedures. Part 2 : Acquisition of data pertinent to land use. 4 Specification of noise limit requirements Part 3 : Application to noise limits. 0.2 This part of ISO 1996 lays down guidelines for the ways in which noise l
31、imits should be specified and describes pro- cedures to be used for checking compliance with such limits. lt is assumed that noise limits are established by local authorities according to these guidelines and are embodied in noise limit regulations to which reference is made. For certain types of so
32、urces of noise, more detailed procedures may be used, for example those specified in ISO 3891 for air- traft noise. ISO 3891 is consistent with the requirements of ISO 1996. This part of ISO 1996 does not specify noise limits. Reference should be made to ISO 1999 for situations where noise may Cause
33、 hearing impairment. 1 Scope and field of application This part of ISO 1996 lays down guidelines for the specification of noise limits and describes methods for the acquisition of data that enable specific noise situations to be checked for compliance with specified noise limits. 2 References ISO 19
34、96- 1, Acoustics - Descrip tion and measuremen t of environmen tal noise - Part 7 : Basic quan tities and procedures. ISO 1996-2, Acoustics - Descrip tion and measuremen t of environmen tal noise - Part 2 : Acquisition of data pertinent to land use. IEC Publication 651, Sound level meters. IEC Publi
35、cation 804, lntegrating-averaging Sound level meters. 4.1 General Noise limits are specified in terms of equivalent continuous A-weighted Sound pressure levels or rating levels during time intervals and at locations appropriate to specific noise sources and conditions. Noise limits may be set by nat
36、ional or local authorities on the basis of general considerations of compatibility with human activities and land use, taking into account the results of Survey measurements, if available. Such limits may depend on many factors such as the time of day, the activities to be protected, the type of noi
37、se Source, and climatic, social and economic factors. Noise limit regulations have to comprise a number of basic elements which, in combination, define uniquely the circumstances under which compliance with the regulations tan be verified. These elements are as follows : a) noise descriptor; b) rele
38、vant time intervals; c) the sources and their conditions of Operation, where appropriate; d) locations where the noise limits have to be verified; e) meteorological conditions, where appropriate; f) criteria for assessment of compliance with the limits. These elements are described in more detail in
39、 4.2. NOTE - For control and enforcement purposes, it may be appropriate to specify limits for emission by individual sources or group(s) of sou rces. 1 ISO 1996-3 : 1987 (E) 4.2 Specification of noise limits 4.2.1 Noise descriptors The preferred noise descriptor for the .specification of noise limi
40、ts is the equivalent continuous A-weighted Sound pressure level or rating level during given reference time interval(s). If noise limits are specified in terms of rating levels, the procedures to be used for determining the levels shall be specified. Limits that apply to noise events may be specifie
41、d in terms of Sound exposure level. If additional limits are specified in terms of other descriptors, the procedu res for determining such values shall be specified. NOTES 1 For large-amplitude noise, such as the noise generated by sonic booms, mining or quarry blasts, measurements with C-weighting
42、are used in some countries to determine the rating level. 2 If it proves impossible to find locations where the noise from a Source tan be measured in isolation, limits may be specified in terms of the Sound power level of the Source. Methods for determining this quantity should then be specified (f
43、or example in accordance with ISO 3744 or ISO 3746). 4.2.2 Relevant time intervals The reference time intervals shall be Chosen to take into account typical human activities and variations in the Operation of the noise Source. Noise levels from the source(s) under consideration may vary strongly at
44、the locations selected. lt may then be necessary to carry out measurements, during a number of reference time intervals, to establish a representative long-term average Sound level or long-term rating level. The number of samples of the reference time interval required will depend on the range of Va
45、riation. The long-term interval shall be Chosen to take into account variations in Source emission and Sound propagation. For situations where variations of the received Sound pressure levels are mainly determined by meteorological conditions, or where emitted noise varies in a complex manner, this
46、time interval may be from one week to one year. 4.2.3 Sound sources and their operating conditions The Source(s) to which the noise limits apply together with their conditions of Operation. shall be specif ied, NOTE - Special noise limits may be specified for periods during which the Source is known
47、 to emit unusual types or levels of noise, e.g. when the Source is undergoing maintenance. 4.2.4 Locations The locations where the noise limits have to be met shall be clearly specif ied. They shall be appropriate for the measurement of the noise emitted by the Source(s) under consideration. The hei
48、ght of the microphone above the ground shall be specified (sec ISO 1996-1 and ISO 1996-2). If these locations measurement of are subsequently found the noise emitted by to be the unsuitable for Source under consideration, additional positions shall be specified where such measurements tan be made (c
49、heck Points). Noise limits at the check Points shall be derived from the levels specified at the initial locations. NOTE - When specifying limits, the importante of certain transmission paths should be considered. This may be of special importante for establishing limits for indoor receiver positions (e.g. transmission through open or closed doors and windows). 4.2.5 Meteorological conditions 4.2.5.1 General For outdoor transmission, changes in meteorological condi- tions may influence the received noise level if the distance between the Source and the rece
