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1、BRITISH STANDARD CONFIRMED SEPTEMBER 1992 BS 6805-2: 1987 ISO 7574-2: 1985 EN 27574-2: 1988 Incorporating Amendment No. 1Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 2: Method for determining and verifying stated values for individual
2、 machines ISO title: Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 2: Methods for stated values for individual machines UDC 534.6:534.835.46:519.22 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 200
3、6, Uncontrolled Copy, (c) BSI BS 6805-2:1987 This British Standard, having been prepared under the direction of the Environment and Pollution Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 January 1987 BSI 11-1999 The following BSI references r
4、elate to the work on this standard: Committee reference EPC/1 Draft for comment 84/52395 DC ISBN 0 580 15555 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Environment and Pollution Standards Committee (EPC/-) to Technical Committee E
5、PC/1, upon which the following bodies were represented: Association of Consulting EngineersIncorporated Association of Architects and British Broadcasting CorporationSurveyors British Occupational Hygiene SocietyInstitute of Acoustics British Telecommunications plcInstitute of Occupational Hygienist
6、s Department of Health and Social SecurityInstitute of Physics Department of the EnvironmentInstitute of Sound and Vibration Research (Building Research Establishment)Institution of Civil Engineers Department of Trade and IndustryInstitution of Electronic and Radio Engineers (Air Division)Petroleum
7、Industry Association Department of Trade and IndustryRoyal Institute of British Architects (National Physical Laboratory)Society of Environmental Engineers Engineering Equipment and Materials UsersTransmission and Distribution Association Association(BEAMA Limited) Health and Safety Executive The fo
8、llowing bodies were also represented in the drafting of the standard, through subcommittees and panels: Advanced Manufacturing Technology ResearchCement Makers Federation InstituteDepartment of Trade and Industry Agricultural Engineers Association(National Engineering Laboratory) British Compressed
9、Air SocietyHevac Association British Engine Group of the Society of MotorInstitution of Mechanical Engineers Manufacturers and TradersInstitution of Production Engineers British Steel CorporationRotating Electrical Machines Association Business Equipment Trade Association(BEAMA Ltd.) Amendments issu
10、ed since publication Amd. No.Date of issueComments 6299April 1990Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-2:1987 BSI 11-1999 i Contents Page Committees responsible Inside front cover Natio
11、nal foreword ii Brief history 2 Text of EN 27574-2 3 Publications referred to Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-2:1987 ii BSI 11-1999 National foreword This Part of BS 6805 has been prepared under the
12、direction of the Environment and Pollution Standards Committee and is identical with ISO 7574-2:1985 “Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 2: Methods for stated values for individual machines”. The standard was prepa
13、red by subcommittee 1, Noise, of Technical Committee 43, Acoustics, of the International Organization for Standardization (ISO) with the active participation and approval of the UK. In 1988 the European Committee for Standardization (CEN) accepted ISO 7574-2:1985 as European Standard EN 27574-2:1988
14、 BS 6805 at present comprises the following Parts. Part 1: Glossary of terms; Part 2: Method for determining and verifying stated values for individual machines; Part 3: Method for determining and verifying stated values for batches of machines using a simple (transition) method; Part 4: Methods for
15、 determining and verifying stated values for batches of machines. Further Parts of BS 6805 will be prepared, if required. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and ce
16、rtain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words
17、“ISO 7574” or “part of ISO 7574” appear, referring to this standard, they should be read as “BS 6805” or “Part of BS 6805” respectively. Cross-references International StandardCorresponding British Standard ISO 3741:1975 BS 4196 Sound power levels of noise sources Part 1:1981 Precision methods for d
18、etermination of sound power levels for broad-band sources in reverberation rooms (Identical) ISO 3742:1975Part 2:1981 Precision methods for determination of sound power levels for discrete-frequency and narrow-band sources in reverberation rooms (Identical) ISO 3743:1976Part 3:1981 Engineering metho
19、ds for determination of sound power levels for sources in special reverberation test rooms (Identical) ISO 3744:1981Part 4:1981 Engineering methods for determination of sound power levels for sources in free-field conditions over a reflecting plane (Identical) ISO 3745:1977Part 5:1981 Precision meth
20、ods for determination of sound power levels for sources in anechoic and semi-anechoic rooms (Identical) Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-2:1987 BSI 11-1999iii The Technical Committee has reviewed the provisions of ISO
21、4871, to which reference is made in the text and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compli
22、ance with a British Standard does not of itself confer immunity from legal obligations. International StandardCorresponding British Standard ISO 3746:1979Part 6:1981 Survey method for determination of sound power levels of noise sources (Identical) BS 6805 Statistical methods for determining and ver
23、ifying stated noise emission values of machinery and equipment ISO 7574-1:1985Part 1:1987 Glossary of terms (Identical) ISO 7574-4:1985Part 4:1987 Methods for determining and verifying stated values for batches of machines (Identical) Summary of pages This document comprises a front cover, an inside
24、 front cover, pages i to iv, the EN title page, pages 2 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheff
25、ieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 27574-2 December 1988 UDC 534.6:534.835.46:519.22 Key wo
26、rds: Acoustics, noise: sound, engine noise, statistical quality control, statistical analysis English version Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 2: Methods for stated values for individual machines (ISO 7574-2, edi
27、tion 1985) Acoustique; Mthodes statistiques pour la dtermination et le contrle des valeurs dclares dmission acoustique des machines et quipements Partie 2: Mthodes pour valeurs dclares de machines individuelles (ISO 7574-2, dition 1985) Akustik; Statistische Verfahren zur Festlegung und Nachprfung a
28、ngegebener (oder vorgegebener) Geruschemissionswerte von Maschinen und Gerter Teil 2: Verfahren fr Angaben (oder Vorgaben) fr Einzelmaschinen (ISO 7574-2, Ausgabe 1985) This European Standard was accepted by CEN on 15 November 1988. CEN members are bound to comply with the requirements of the CEN/CE
29、NELEC Rules which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member
30、. This European Standard exists in the official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to CEN Central Secretariat has the same status as the official versions. CEN members are
31、 the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europische
32、s Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN 1988 Copyright reserved to all CEN members Ref. No. EN 27574-2:1988 E Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 27574-2:1988 BSI 11-1999 2 Brief histo
33、ry The Technical Board decided with Resolution BT 84/1988 to submit the International Standard ISO 7574-2:1985, Acoustics; Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 2: Methods for stated values for individual machines. to the Forma
34、l Vote. Since this standard passed the Formal Vote positively without modification, it was approved by CEN as European Standard EN 27574-2. In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, Fran
35、ce, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Statement The text of the International Standard ISO 7574-2, edition 1985 was approved by CEN as a European Standard without any modification. Contents Page Brief hi
36、story 2 0 Introduction 3 1 Scope and field of application 3 2 References 3 3 Definitions 3 4 General 3 5 Guidelines for the determination of the labelled value, Lc, by the labeller 3 6 Verifying the labelled value for an individual machine 4 7 Information to be given 4 Licensed Copy: sheffieldun she
37、ffieldun, na, Tue Dec 05 04:50:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 27574-2:1988 BSI 11-19993 0 Introduction A general introduction to the four-part series of ISO 7574 is given in ISO 7574-1. For the purposes of this part of ISO 7574, the term “labelled value” stands for all kinds of sta
38、ted values (e.g. information on a label, the upper noise limit set by an authority, the agreed contract value) for which the methods may be applied. The methods described in this part of ISO 7574 are of a statistical nature only in a restricted sense. Statistical view-points are relevant mainly when
39、 estimating the value of K (see clause 5). 1 Scope and field of application This part of ISO 7574 provides guidelines for determining the labelled values of the noise emissions of individually-labelled machinery and equipment, that is, in the situation in which each machine produced has its own indi
40、vidually-labelled value of its noise emission quantity. It also specifies a method for verifying compliance of the noise emission of an individual machine or item of equipment with its labelled value. This part of ISO 7574 does not deal with the consequences that ensue if the stated value is not con
41、firmed as verified for a single machine. 2 References ISO 3741, Acoustics Determination of sound power levels of noise sources Precision methods for broad-band sources in reverberation rooms. ISO 3742, Acoustics Determination of sound power levels of noise sources Precision methods for discrete-freq
42、uency and narrow-band sources in reverberation rooms. ISO 3743, Acoustics Determination of sound power levels of noise sources Engineering methods for special reverberation test rooms. ISO 3744, Acoustics Determination of sound power levels of noise sources Engineering methods for free-field conditi
43、ons over a reflecting plane. ISO 3745, Acoustics Determination of sound power levels of noise sources Precision methods for anechoic and semi-anechoic rooms. ISO 3746, Acoustics Determination of sound power levels of noise sources Survey method. ISO 4871, Acoustics Noise labelling of machinery and e
44、quipment. ISO 7574-1, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 1: General considerations and definitions. ISO 7574-4, Acoustics Statistical methods for determining and verifying stated noise emission values of machinery
45、and equipment Part 4: Methods for stated values for batches of machines. 3 Definitions For the purposes of this part of ISO 7574, the definitions given in ISO 7574-1 apply. 4 General When checking compliance of a machine with its individually-labelled value, this part of ISO 7574 works on the princi
46、ple that the labelled value indicates the limit below which the noise emission value of the machine lies. NOTEIn the application of this part of ISO 7574, it is assumed that all measurements will be performed by a testing laboratory which has appropriate test facilities and trained staff. 5 Guidelin
47、es for the determination of the labelled value, Lc, by the labeller As the determination of the labelled value is the sole responsibility of the labeller, this clause is given for guidance only. The measured value (or the mean of several measured values) for the individual machine is designated L* a
48、nd shall be determined in accordance with the specific measurement test code for the specific family of machines. (The asterisk in the symbol is used here to differentiate between measurements in conformity with this clause and those in conformity with clause 6.) NOTE 1If such a specific measurement
49、 test code does not exist, the methods specified in ISO 3741, ISO 3742, ISO 3743, ISO 3744 and ISO 37451) may be used if the installation and operating conditions typical for normal use are clearly stated or agreed. NOTE 2If the specific measurement test code for the family of machines provides more than one mode of operation in normal use, the mode yielding the highest value of L* or the mode agreed upon in the relevant machinery industry or in the contract should be used to determine Lc. The insta