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1、BRITISH STANDARD BS EN 61063:1996 IEC 1063:1991 Acoustics Measurement of airborne noise emitted by steam turbines and driven machinery The European Standard EN 61063:1996 has the status of a British Standard ICS 17.140.20; 27.040 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 03:49:32 GMT+00
2、:00 2006, Uncontrolled Copy, (c) BSI BS EN 61063:1996 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 July 1996 BSI 10-1999 The following BSI references relate to the
3、 work on this standard: Committee reference MCE/13 Draft for comment 87/75408 DC ISBN 0 580 25677 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee MCE/13, Steam turbines, upon which the following bodies were represented:
4、 Association of Consulting Engineers Electricity Supply Industry in England and Wales North of Scotland Hydro-electric Board Power Generation Association (BEAMA Ltd.) South of Scotland Electricity Board Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun,
5、na, Thu Nov 09 03:49:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61063:1996 BSI 10-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 610633 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 03:49:32
6、GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61063:1996 ii BSI 10-1999 National foreword This British Standard has been prepared by Technical Committee MCE/13 and is the English language version of EN 61063:1996 Acoustics Test code for the measurement of airborne noise emitted by steam turbines
7、and driven machinery published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 1063:1991 published by the International Electrotechnical Commission (IEC). For graphical symbols, and letter symbols and signs approved by the IEC for general use, reade
8、rs are referred to: IEC Publication 27: Letter symbols to be used in electrical technology IEC Publication 617: Graphical symbols for diagrams The symbols and signs contained in the present publication have either been taken from IEC Publication 27 or 617, or been specifically approved for the purpo
9、se of this publication. For general terminology, readers are referred to IEC Publication 50: International Electrotechnical Vocabulary (IEV), which is issued in the form of separate chapters each dealing with a specific field, the General Index being published as a separate booklet. Full details of
10、the IEV will be supplied on request1). The terms and definitions contained in the present publication have either been taken from the IEC or have been specifically approved for the purpose of this publication. Some Sections and Parts of BS 4727 are identical with or technically equivalent to IEC Pub
11、lication 50. All Parts of BS 3939, except for Part 1, are identical with IEC Publication 617. EN 61063 was produced as a result of international discussion in which the United Kingdom took an active part. 1) Available from BSI, Customer Services, Sales Department, 389 Chiswick High Road, London W4 4
12、AL. Cross-references Publication referred toCorresponding British Standard IEC 50(801):1984aBS 4727 Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms Part 3 Terms particular to telecommunications and electronics Group 08:1995 Acoustics and electroacoustic
13、s IEC 268-4:1972BS 6840 Sound system equipment Part 4:1987 Methods for specifying and measuring the characteristics of microphones EN 60651:1994 (IEC 651:1979) BS EN 60651:1994 Specification for sound level meters ISO 3740:1980BS 4196 Sound power levels of noise sources Part 0:1981 Guide for the use
14、 of basic standards and for the preparation of noise test codes ISO 3744:1981bBS EN ISO 3744:1995 Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in essentially free-field over a reflecting plane a IEC 50(801):1984 has been superseded by IEC 5
15、0(801):1994 with which the British Standard cited is identical. b ISO 3744:1981 has been superseded by ISO 3744:1994 with which the British Standard cited is identical. Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 03:49:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61063:1996 BSI 10-
16、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. ISO 3746:1979BS 4196 Sound power
17、levels of noise sources Part 6:1981 Survey method for determination of sound power levels of noise sources Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, the EN title page, pages 2 to 14, an inside back cover and a back cover. This standard has been upd
18、ated (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, Thu Nov 09 03:49:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na,
19、 Thu Nov 09 03:49:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61063 January 1996 ICS 17.140.20 Descriptors: Acoustics, acoustic measurement, acoustic test, machine noise, air noise, turbine, environment, acoustic pressure, level, calculation Eng
20、lish version Acoustics Measurement of airborne noise emitted by steam turbines and driven machinery (IEC 1063:1991) Acoustique Mesure de bruit arien mis par les turbines vapeur et les machines entranes (CEI 1063:1991) Akustik Messung von luftbertragenen Geruschen emittiert von Dampfturbinen und ange
21、triebenen Maschinen (IEC 1063:1991) This European Standard was approved by CENELEC on 1995-05-15. CENELEC 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. U
22、p-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translatio
23、n under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, It
24、aly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1
25、050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 61063:1996 E Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 03:49:32 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61063:1996 BSI 10-1999 2 Foreword The text of the International Standard IEC 1063:1991, prepared by IEC TC 5,
26、 Steam turbines, was submitted to the formal vote and was approved by CENELEC as EN 61063 on 1995-05-15 without any modification. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex A and Annex ZA are normative. Annex ZA has be
27、en added by CENELEC. Contents Page Foreword2 Introduction3 1Scope3 2Normative references4 3Definitions5 4Acoustic environment5 5Instrumentation6 6Installation and operation of turbine set6 7Measurement of A-weighted sound pressure level6 8Calculation of surface sound pressure level and sound power l
28、evel8 9Information to be recorded9 10Information to be reported10 Annex A (normative) Test environment qualification procedure11 Annex ZA (normative) Normative references to international publications with their corresponding European publications14 Figure 1 General situation of the turbine sets, in
29、cluding their ancillaries and auxiliaries3 Figure 2 Typical arrangements of microphone positions7 Figure A.3 Environmental correction K, in decibels12 Table 1 Uncertainty in determining A-weighted sound power level by the survey method4 Table 2 Correction for background noise8 latest date by which t
30、he EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1996-07-01 Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 03:49:32 GM
31、T+00:00 2006, Uncontrolled Copy, (c) BSI EN 61063:1996 BSI 10-19993 Introduction This standard is based on ISO 3746 and has been drafted in accordance with ISO 3740. The main purpose of this standard is to describe a method for the measurement of noise radiated by steam-turbines including driven mac
32、hinery operating under steady state conditions. The results are expressed in sound power levels and in sound pressure levels. NOTEFor special environmental conditions, it may be possible to use the engineering methods based on ISO 3744 resulting in a higher grade of accuracy. In this case no referen
33、ce to this standard will be made. 1 Scope 1.1 General 1.1.1 This International Standard applies to the measurement of airborne noise emitted by assemblies comprising steam turbines and driven machinery, hereinafter referred to as turbine sets. These sets are of all sizes without limitation of output
34、 when fitted with their normal auxiliaries. This standard applies only to the part of the turbine set (turbine, generator and attached components) located above the floor of the turbine room and inside a continuous enveloping measurement surface bounded by this floor. An extensive and continuous tur
35、bine operating floor of a reflecting nature above the turbine foundation floor level shall be considered as the reflecting plane. 1.1.2 In the case of large turbine sets, the turbine operating floor is often located below and near the horizontal centreline of the turbine (see Figure 1). If this floo
36、r is continuous and free from openings which would otherwise allow noise radiated below the turbine operating floor to influence the noise measured at microphone locations, a valid measure of the turbine set noise emission may be obtained by use of this standard. 1.1.3 In the case where the turbine
37、operating floor is located below and near the horizontal centerline of the turbine set, but consists of: a) an open grating construction, or b) a solid floor with openings near to the boundary of the turbine set, or c) walkways typically 1 to 2 m wide of either solid or grated construction, the turb
38、ine operating floor cannot be considered as a reflecting plane. In this case the reflecting plane will be the turbine set foundation floor. Figure 1 General situation of the turbine sets, including their ancillaries and auxiliaries Licensed Copy: sheffieldun sheffieldun, na, Thu Nov 09 03:49:32 GMT+
39、00:00 2006, Uncontrolled Copy, (c) BSI EN 61063:1996 4 BSI 10-1999 In the case of the continuous enveloping measurement surface being bounded by either the turbine operating floor or the turbine foundation floor, a large contribution from the noise of ancillary and auxiliary plant located below the
40、turbine operating floor may be expected at the microphone measuring positions. In this case the use of this standard for the determination of sound power levels is not valid. If this standard is to be employed for the purpose of the comparison of the 1 m sound levels of similar turbines, the turbine
41、 operating floor shall be used as the bounding surface for the continuous enveloping measurement surface. The validity of comparative measurements will depend on the noise present at the measurement positions due to auxiliary and ancillary plant and it will be necessary to define exactly the number,
42、 type and location of these items. It is preferable to establish the effect auxiliary and ancillary plant noise radiation will have on the sound level at the microphone locations by determining the noise emission of these items in accordance with ISO 3746, and determining the propagation of this noi
43、se to microphone locations. However, this procedure is beyond the scope of this standard. NOTEWhen openings in the floor are suitably blocked during the test with appropriate panels (upper side of panels should have same reflective characteristics as the turbine operating floor), valid measurements
44、are permitted. 1.1.4 In the case of turbine sets mounted on, or partially submerged in, the foundation floor, which may also be defined as the turbine operating floor, a valid measure of the turbine set noise emission may be obtained by use of this standard. 1.1.5 Where noise control treatments such
45、 as enclosures and/or screens are fitted to the turbine set, driven equipment and auxiliaries, the type, location and extent of treatment shall be reported. 1.2 Measurement uncertainty Measurements made in conformity with this standard tend to result in standard deviations which are equal to or less
46、 than those given in Table 1. Table 1 Uncertainty in determining A-weighted sound power level by the survey method NOTE 1If the method specified in this standard is used to compare the sound power levels of similar machines that are omnidirectional and radiate broad band noise, the uncertainty in th
47、is comparison tends to result in a standard deviation which is equal to or less than 3 dB provided that the measurements are performed in similar environments. NOTE 2The standard deviations given in this table reflect the cumulative effects of all causes of measurement uncertainty, excluding variati
48、ons in the sound power level from machine to machine or from test to test which may be caused, for example, by changes in the mounting or operating conditions of the source. The reproducibility and repeatability of the test results may be considerably better (i.e. indicate smaller deviations) than t
49、he uncertainties given in Table 1 would indicate. NOTE 3The standard deviations given above are considered, in the light of the experimental evidence available, to be conservative. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possi