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BS EN ISO 11201-2010

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BS EN ISO 11201-2010

BSI Standards Publication BS EN ISO 112012010 Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental correctionsBS EN ISO 112012010 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN ISO 112012010. It supersedes BS EN ISO 112012009 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee EH/1/4, Machinery noise. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2010 ISBN 978 0 580 53884 1 ICS 17.140.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2010 Amendments issued since publication Date Text affected EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11201 May 2010 ICS 17.140.20 Supersedes EN ISO 112012009 English Version Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections ISO 112012010 Acoustique - Bruit mis par les machines et quipements - Dtermination des niveaux de pression acoustique dmission au poste de travail et en dautres positions spcifies dans des conditions approchant celles du champ libre sur plan rflchissant avec des corrections denvironnement ngligeables ISO 112012010 Akustik - Geruschabstrahlung von Maschinen und Gerten - Bestimmung von Emissions-Schalldruckpegeln am Arbeitsplatz und an anderen festgelegten Orten in einem im Wesentlichen freien Schallfeld ber einer reflektierenden Ebene mit vernachlssigbaren Umgebungskorrekturen ISO 112012010 This European Standard was approved by CEN on 22 April 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations 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 Management Centre 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 112012010 EBS EN ISO 112012010 EN ISO 112012010 E 3 Foreword This document EN ISO 112012010 has been prepared by Technical Committee ISO/TC 43 “Acoustics” in collaboration with Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 112012009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive. For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 112012010 has been approved by CEN as a EN ISO 112012010 without any modification. BS EN ISO 112012010 EN ISO 112012010 E 4 Annex ZA informative Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery. Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations. WARNING Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard. BS EN ISO 112012010 ISO 112012010E ISO 2010 – All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references2 3 Terms and definitions .3 4 Instrumentation .7 5 Test environment.7 6 Measured quantities11 7 Quantities to be determined.12 8 Mounting and operation of source under test12 9 Microphone positions .14 10 Measurements .16 11 Measurement uncertainty.18 12 Information to be recorded.21 13 Test report22 Annex A normative Allocation of the accuracy grade 1 or 2.23 Annex B normative Criteria for background noise for measurements in frequency bands 24 Annex C informative Guidance on the development of information on measurement uncertainty 26 Annex D informative Principles of the methodology 32 Annex E informative Example of a test table.33 Bibliography34 BS EN ISO 112012010 ISO 112012010E iv ISO 2010 – 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 committees. 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 International 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 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 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11201 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise. This second edition cancels and replaces the first edition ISO 112011995, which has been technically revised. It also incorporates the Technical Corrigendum ISO 112011995/Cor.11997. BS EN ISO 112012010 ISO 112012010E ISO 2010 – All rights reserved vIntroduction This International Standard specifies a method for determining the emission sound pressure levels at a work station and at other well defined positions, in the vicinity of a machine or piece of equipment, in an essentially free field over a reflecting plane. It is one of a series ISO 11200 [15]to ISO 11205 [19] which specifies various methods for determining the emission sound pressure level at a work station and at other specified positions of a machine or equipment. ISO 11200 [15]gives guidance on the choice of the method to be used to determine the emission sound pressure levels of machinery and equipment. The method specified in this International Standard differs from those in other International Standards in the ISO 11200 [15]to ISO 11205 [19]series in not applying any environmental correction. Requirements to be fulfilled by the environment are specified for accuracy grade 1 precision and grade 2 engineering measurements indoors and outdoors. Precision measurements with accuracy grade 1 can generally be carried out in hemi-anechoic test rooms or outdoors provided that requirements on environmental conditions are met. With the specifications defined in the following it should be possible in some cases to provide such conditions in industrial ambience on larger plane areas outdoors free from reflecting objects. ISO 112011995 provided results of accuracy grade 2 only. This edition of this International Standard provides a method of accuracy grade 2 that is essentially identical to that given in ISO 112011995. It also provides a more precise method of accuracy grade 1. Users and drafters of noise test codes referring to this International Standard should indicate clearly which method accuracy grade 1 or accuracy grade 2 is used. In general, the emission sound pressure levels are less than or equal to those that occur when the machinery or equipment is operating in its normal surroundings. This is because the sound pressure levels are determined by excluding the effects of background noise, as well as the effects of reflections other than those from the reflecting plane on which the machine under test is placed. For determination or calculation of the sound pressure level at the operators position with the machine operating in a room, both sound power level and sound pressure level are required as well as information on the room properties or reflections and noise from other sound sources or machines. A method of calculating the sound pressure levels in the vicinity of a machine operating alone in a workroom is given in ISO/TR 11690-3 [20] . Commonly observed differences are 1 dB to 5 dB, but in extreme cases the difference may be even greater. BS EN ISO 112012010BS EN ISO 112012010 INTERNATIONAL STANDARD ISO 112012010E ISO 2010 – All rights reserved 1Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections 1 Scope 1.1 General This International Standard specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in an essentially free field over a reflecting plane. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions. Emission sound pressure levels are determined as A-weighted levels. Additionally, levels in frequency bands and C-weighted peak emission sound pressure levels can be determined in accordance with this International Standard, if required. NOTE 1 The contents of the series ISO 11200 [15]to ISO 11205 [19]are summarized in ISO 11200 [15] . With the method specified in this International Standard, results of accuracy grade 1 precision grade or accuracy grade 2 engineering grade are obtained. Corrections are applied for background noise, but not for the acoustic environment. Instructions are given for the mounting and operation of the source under test and for the choice of microphone positions for the work station and for other specified positions. One purpose of the measurements is to permit comparison of the performance of different units of a given family of machines, under defined environmental conditions and standardized mounting and operating conditions. NOTE 2 The data obtained can also be used for the declaration and verification of emission sound pressure levels as specified in ISO 4871 [8] . 1.2 Types of noise and noise sources The method specified in this International Standard is suitable for all types of noise steady, non-steady, fluctuating, isolated bursts of sound energy, etc. defined in ISO 12001. The method specified in this International Standard is applicable to all types and sizes of noise sources. NOTE Throughout this International Standard the words “machine” and “source under test” are used to represent either a machine or a piece of equipment. BS EN ISO 112012010 ISO 112012010E 2 ISO 2010 – All rights reserved1.3 Test environment The type of test environment influences the accuracy of the determination of emission sound pressure levels. For the application of this International Standard, an essentially free field over a reflecting plane indoors or outdoors is required. 1.4 Work station and other specified positions This International Standard is applicable to work stations and other specified positions where emission sound pressure levels are to be determined. Appropriate positions where measurements may be made include the following a work station located in the vicinity of the source under test; this is the case for many industrial machines and domestic appliances; b work station within a cab which is an integral part of the source under test; this is the case for many industrial trucks and earth-moving machines; c work station within a partial or total enclosure or behind a screen supplied by the manufacturer as an integral part of the source under test; d

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