BS-6805-3-1987 EN-27574-3-1988 ISO-7574-3-1985.pdf

BRITISH STANDARD CONFIRMED SEPTEMBER 1992 BS 6805-3: 1987 ISO 7574-3: 1985 EN 27574-3: 1988 Incorporating Amendment No. 1Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Method for determining and verifying stated values for batches of machines using a simple (transition) method ISO title: Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) method for stated values for batches of machines UDC 534.6:534.835.46:519.22 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-3:1987 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 10-1999 The following BSI references relate to the work on this standard: Committee reference EPC/1 Draft for comment 84/52396 DC ISBN 0 580 15556 0 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 EPC/1, upon which the following bodies were represented: Association of Consulting Engineers British Broadcasting Corporation British Occupational Hygiene Society British Telecommunications plc Department of Health and Social Security Department of the Environment (Building Research Establishment) Department of Trade and Industry (Air Division) Department of Trade and Industry (National Physical Laboratory) Engineering Equipment and Materials Users Association Health and Safety Executive Incorporated Association of Architects and Surveyors Institute of Acoustics Institute of Occupational Hygienists Institute of Physics Institute of Sound and Vibration Research Institution of Civil Engineers Institution of Electronic and Radio Engineers Petroleum Industry Association Royal Institute of British Architects Society of Environmental Engineers Transmission and Distribution Association (BEAMA Limited) The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Advanced Manufacturing Technology Research Institute Agricultural Engineers Association British Compressed Air Society British Engine Group of the Society of Motor Manufacturers and Traders British Steel Corporation Business Equipment Trade Association Cement Makers Federation Department of Trade and Industry (National Engineering Laboratory) Hevac Association Institution of Mechanical Engineers Institution of Production Engineers Rotating Electrical Machines Association (BEAMA Ltd.) Amendments issued since publication Amd. No.Date of issueComments 6300April 1990Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-3:1987 © BSI 10-1999i Contents Page Committees responsibleInside front cover National forewordii Brief history2 Text of EN 27574-33 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-3:1987 ii © BSI 10-1999 National foreword This Part of BS 6805 has been prepared under the direction of the Environment and Pollution Standards Committee and is identical with ISO 7574-3:1985 “Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) methods for stated values for batches of machines”. The standard was prepared 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 7574-3:1985 as European Standard EN 27574-3:1988. 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 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 certain 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 “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 determination 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 methods 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 methods for determination of sound power levels for sources in anechoic and semi-anechoic rooms (Identical) Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6805-3:1987 © BSI 10-1999iii 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. Compliance 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 verifying 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 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 sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 27574-3 December 1988 UDC 534.6:534.835.46:519.22 Key word: 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 3: Simple (transition) method for stated values for batches of machines (ISO 7574-3, edition 1985) Acoustique; Méthodes statistiques pour la détermination et le contrôle des valeurs déclarées démission acoustique des machines et équipements Partie 3: Méthode simplifiée (transitoire) pour valeurs déclarées de lots de machines (ISO 7574-3, édition 1985) Akustik; Statistische Verfahren zur Festlegung und Nachprüfung angegebener (oder vorgegebener) Geräuschemissionswerte von Maschinen und Geräten Teil 3: einfaches Verfahren (Übergangsregelung) für Maschinenlose (ISO 7574-3, 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/CENELEC 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. This European Standard exists in three 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 the CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © CEN 1988 Copyright reserved to CEN members Ref. No. EN 27574-3:1988 E Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 27574-3:1988 © BSI 10-1999 2 Brief history The Technical Board decided with Resolution BT 84/1988 to submit the International Standard Since this standard passed the Formal Vote positively without modification, it was approved by CEN as European Standard EN 27574-3 In accordance with the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Statement The text of the International Standard ISO 7574-3, edition 1985 was approved by CEN as a European Standard without any modification. Contents Page Brief history2 0Introduction3 1Scope and field of application3 2References3 3Definitions3 4General3 5Guidelines for the determination of the labelled value, Lc, by the labeller3 6Verifying the labelled value for a batch of machines4 7Information to be given4 ISO 7574-3:1985, “Acoustics; Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 3: Simple (transition) method for stated values for batches of machines”. to the Formal Vote. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 04:50:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 27574-3:1988 © BSI 10-19993 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 stated 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. 1 Scope and field of application This part of ISO 7574 is derived from ISO 7574-4. It provides guidelines for determining the labelled value, Lc, by the labeller and specifies a simple method for verifying compliance of the noise emissions of a batch (lot) of machinery or equipment with its labelled value, Lc. This method may be used when a specific noise labelling code (in accordance with clause 6 of ISO 7574-4) specifying the reference standard deviation, sample size and sampling procedure for the family of machines does not yet exist. If a specific noise labelling code exists, it shall be used, in which case reference to this part of ISO 7574 shall not be made. This part of ISO 7574 should preferably be used only by agreement, e.g. as reached in the standards relating to the relevant machinery industry or in a contract. This part of ISO 7574 does not deal with the consequences that ensue if the stated value is not confirmed as verified for a batch of machines. 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-frequency 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 conditions 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 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 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 batch with its labelled value, this part of ISO 7574 works on the principle that the labelled value indicates the limit below which a specified large proportion of the noise emission values of the batch shall lie. This proportion accounts for both the variability between the machines and the random measurement errors occurring under reproducibility conditions (see 3.17 in ISO 7574-1). 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 Guidelines for the determination of the labelled value, Lc, by the labeller As the determination of the labelled value for a batch of machines is the sole responsibility of the labeller, this clause is given for guidance only. The measured values of individual machines, , of the relevant batch 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 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 of normal use are clearly stated or agreed. NOTE 2If the specific measurement test code for