30177545 pdf | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |[.]
BRITISH STANDARD Acoustics Ð Noise test code for fastener driving tools Ð Engineering method ICS 17.140.20; 25.140.99 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BS EN 12549:1999 +A1:2008 Confirmed December 2009 BS EN 12549:1999+A1:2008 National foreword This British Standard is the UK implementation of EN 12549:1999+A1:2008 It supersedes BS EN 12549:1999 which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by The UK participation in its preparation was entrusted by Technical Committee MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum technology, to Panel MCE/8/–/2, Hand-held, non-electric power tools – Safety A list of organizations represented on this panel 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 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Committee and comes into effect on 15 November 1999 © BSI 2009 ISBN 978 580 61944 Amendments/corrigenda issued since publication Date Comments 30 April 2009 Implementation of CEN amendment A1:2008 EUROPEAN STANDARD EN 12549:1999+A1 NORME EUROPÉENNE EUROPÄISCHE NORM September 2008 ICS 17.140.20; 25.140.99 Supersedes EN 12549:1999 English Version Acoustics - Noise test code for fastener driving tools Engineering method Acoustique - Code d'essai acoustique pour les machines enfoncer les fixations - Méthode d'expertise Akustik - Geräuschmessverfahren für Eintreibgeräte Verfahren der Genauigkeitsklasse This European Standard was approved by CEN on 30 October 1998 and includes Amendment approved by CEN on 26 July 2008 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, 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 COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members B-1050 Brussels Ref No EN 12549:1999+A1:2008: E BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Contents Page Foreword Introduction Scope Normative references Definitions Description of fastener driving tools 5.1 5.2 5.3 5.4 Sound power level determination Basic International Standards to be used Measurement procedure .7 Calculation Measurement uncertainty .8 6.1 6.2 6.3 6.4 Emission sound pressure level determination Basic International Standards to be used Selection of relevant work station .9 Measurement procedure .9 Measurement uncertainty .9 7.1 7.2 7.3 Installation and mounting conditions General Measuring instruments .10 Test environment 10 8.1 8.2 8.3 8.4 8.5 Operating conditions 10 General 10 Object to be measured and operating conditions 10 Workpiece 10 Workpiece support 11 Position of the fastener driving tool 11 Measurement uncertainties 11 10 10.1 10.2 10.3 10.4 10.5 10.6 Information to be recorded 11 General 11 Type and technical information on the fastener driving tool and the fasteners to be used (including limits) 11 Information about the operating conditions .11 Description of the measurement installation and surroundings 11 Measurement instruments used .11 Measured values and calculated results, containing .11 11 Information to be reported 12 12 Declaration and verification of noise emission values 12 Annex A (informative) Calculation of equivalent continuous emission sound pressure level 13 Annex B (informative) Model form for the declaration of noise emission values of fastener driving tools operated with compressed air 14 Annex C (informative) Bibliography 15 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC" 16 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" 17 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Foreword This document (EN 12549:1999+A1:2008) has been prepared by Technical Committee CEN/TC 255 "Handheld, non-electric power tools - Safety", the secretariat of which is held by SIS 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 March 2009, and conflicting national standards shall be withdrawn at the latest by December 2009 This document includes Amendment 1, approved by CEN on 2008-07-26 This document supersedes EN 12549:1999 The start and finish of text introduced or altered by amendment is indicated in the text by tags ! " This European Standard 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(s) !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts 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, 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 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Introduction This noise test code describes methods for determining and presenting the acoustical characteristics of fastener driving tools The EC Machinery Directive prescribes that noise emission values for the machines in a defined process shall be stated The manufacturer of fastener driving tools must indicate the operating conditions during the noise measurement and what methods have been used for the measurement Scope This standard applies to fastener driving tools The noise created by fastener driving tools directly affecting the surrounding environment (noise emission) should calculated in a uniform procedure enabling comparison of the final results This standard contains provisions concerning the execution of the measurement of airborne noise in the vicinity of fastener driving tools and the measurement of emission sound pressure levels at the work station under defined operating conditions The determination of the noise emission levels of fastener driving tools in accordance with this standard is valid for all actuating systems in accordance with EN 792-13 The results can be used to compare the noise emissions of different fastener driving tools NOTE The special conditions at the work place (e.g shape and foundation of the workpiece, quantity and frequency of the driving processes) can influence the noise emission to an important degree Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies EN 292-2, Safety of machinery ± Basic concepts, general principles for design ± Part 2: Technical principles and specifications EN 792-13, Handheld non-electric power tools - Safety requirements ± Part 13: Fastener driving tools EN 60651, Sound level meters EN 60804, Integrating-averaging sound level meters EN ISO 3744, Acoustics - Determination of sound power levels of noise sources using sound pressure Engineering method in an essentially free field over a reflecting plane EN ISO 4871, Acoustics - Declaration and verification of noise emission values of machinery and equipment EN ISO 11201, Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at a work station and at other specified positions - Engineering method in an essentially free field over a reflecting plane BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Definitions For the purposes of this standard, the following definitions apply: 3.1 A-weighted single-event emission sound pressure level, LpA,1s in dB: A-weighted and time-integrated emission sound pressure level of an isolated single sound event of specified duration T (or specified measurement time T), related to T0 = s; it is given by the following equation: LpA,1 s = 10 lg[ T0 T p (t ) ∫0 p02 T T dt ] dB = LpAeq,T + 10 lg dB …(1) The reference sound pressure is p0 = 20 µPa 3.2 A-weighted single-event sound power level, LWA,1s in dB: A-weighted sound power level determined from measurements of the single-event sound pressure level 3.3 C-weighted peak emission sound pressure level, LpC,peak in dB: The C-weighted peak emission sound pressure level of a test object, determined in accordance with EN ISO 11201 at the work station 3.4 Fastener driving tool See EN 792-13 Description of fastener driving tools Fastener driving tools are handheld power tools in which energy is applied in a linear movement to inserted fasteners for the purpose of driving The design of these fastener driving tools is such that in normal circumstances they may be carried by one person and are handheld during the driving process NOTE Fastener driving tools are named e.g nailers, staplers, tackers, pinners The energy required for the driving process can be drawn e.g from compressed air, electrical current, combustible gases, tension springs Fasteners may be e.g nails, staples, pins, brads, corrugated fasteners and screws used as nails The frequency of the driving processes with a fastener driving tool varies in time according to the operation purpose (e.g 500 driving processes per day may be carried out with a big fastener driving tool against 20 per second with a small one) The time duration of one driving process is normally in a range of 0,1 s or shorter Sound power level determination 5.1 Basic International Standards to be used If it is required to determine the sound power level, basic sound power measurement standards shall be used, such as EN ISO 3744 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) The sound power level shall be given as A-weighted sound power level in dB The reference sound power is -12 1pW (1 pW = 10 W) 5.2 Measurement procedure 5.2.1 Measurement surface The measurement surface is a hypothetical cube on which the measurement positions are located and which envelops the fastener driving tool (see figure 1) Exception: Position O for measuring the A-weighted single-event emission sound pressure level at work station The measurement surface ends at floor level, which is to be regarded as a sound reflecting periphery The height of the centre point of the fastener driving tool above the ground shall be (1,00 ± 0,10) m The centre point is located on the driving axis at half of the height of the fastener driving tool NOTE surface 5.2.2 Because a fastener driving tool is of small size the centre point of a fastener driving tool is used instead of the Measurement distance The measurement distance shall be 1,00 m from the centre point of the fastener driving tool (see figure 1) 5.2.3 Measurement positions The location of the nine measurement positions i = 1, 2, ., shall be that of figure Dimensions in metres Measurement positions Measurement position at the work station (near the operator's ear) Figure – Location of the measurement positions for fastener driving tools BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) 5.2.4 Measurement of the A-weighted single-event sound pressure level The A-weighted single-event sound pressure level of one driving process L'pA,1s shall be measured five times at each measurement position i The arithmetic mean of the five values shall be determined for each measurement position i and is denoted L'pA,1s, i (with i = 1, 2, .9) NOTE In the case of fastener driving tools which can be actuated only by continuous actuation of the driving process, the A-weighted sound pressure level L© pA,i should be measured five times for the same time duration (e.g s) and the number of driving processes should be recorded for the calculation of the A-weighted single-event sound pressure level 5.3 Calculation 5.3.1 Calculation of the area S and the superficial measure LS of the enveloping measurement surface The area of the enveloping measurement surface S according to the dimensions given in figure is 20 m² The value of the superficial measure is: Ls = 10lg S dB = 13dB S0 (2) where S0 = m² 5.3.2 Calculation of the A-weighted single-event sound pressure level on the measurement surface The A-weighted single-event sound pressure level on the measurement surface is calculated from the sound pressure levels measured at the nine measuring positions on the enveloping measurement surface in accordance with 5.2.1: L pA,1s,1m =10lg[ 0,1L ' 10 pA,1s,i ∑ i =1 ] dB - K 1A - K 2A (3) It is recommended to carry out measurements in an anechoic test room over a reflecting plane In this situation the background noise correction K1A and the environmental correction K2A are negligible 5.3.3 Calculation of the A-weighted single-event sound power level The A-weighted single-event sound power level is calculated from the A-weighted single-event sound pressure level on the measurement surface as stated in 5.3.2, and the superficial measure LS of the measurement surface as stated in 5.3.1: LWA ,1s = L pA,1s,1m + Ls (4) 5.4 Measurement uncertainty The accuracy shall be of grade The measurement uncertainty shall be stated in accordance with EN ISO 3744 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Emission sound pressure level determination 6.1 Basic International Standards to be used EN ISO 11201 shall be used 6.2 Selection of relevant work station The measurement position, O, for the determination of the A-weighted single-event emission sound pressure level at work station shall be at the distances a = 0,3 m and h = 0,5 m from the centre point of the fastener driving tool on the handle side (see 5.2.1) The value measured at position O is not to be taken into account for calculating the A-weighted single-event sound pressure level on the surface (see figure and 5.3.2) 6.3 Measurement procedure At position O (operator's position) five corresponding measurements of an A-weighted single-event emission sound pressure level of driving processes are to be taken and the arithmetic mean is to be calculated The resulting sound pressure level is taken to be the A-weighted single-event emission sound pressure level at the work station LpA,1s For comparison with the value given in annex A, 1.7.4 (f) of EN 292-2:1991 the determination of the Aweighted emission sound pressure level at the work station, LpAeq , shall be calculated from LpA,1s by taking into consideration the maximum possible number of driving processes within one second, Nmax,1s, according to the following equation: LpAeq = L pA,1s + 10 lg Nmax,1s dB (5) where Nmax,1s is the maximum possible number of driving processes within one second In the case the C-weighted peak emission sound pressure level at the work station exceeds 130 dB, in addition ten corresponding measurements of driving processes shall be taken and the arithmetic mean shall be calculated The resulting sound pressure level at the work station is denoted LpC,peak NOTE In the case of fastener driving tools which can be actuated only by continuous actuation of the driving process, the A-weighted emission sound pressure level at position O should be measured five times for the same duration (e g s) and the number of driving processes should be recorded for the calculation of the single-event sound pressure level 6.4 Measurement uncertainty The accuracy shall be of grade The measurement uncertainty shall be stated in accordance with EN ISO 11201 Installation and mounting conditions 7.1 General The tests for declaration and verification of noise emission values are made with a new fastener driving tool The installation and mounting conditions shall be the same for the determination of both A-weighted singleevent sound power levels and emission sound pressure levels at the work station and for declaration purposes BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Care shall be taken to ensure that any electrical conduits, piping or air ducts which are connected to the machinery not radiate significant amounts of sound energy 7.2 Measuring instruments A sound level meter of class 1, according to EN 60651, or an integrating-averaging sound level meter, according to EN 60804, shall be used In addition to the requirements of EN 60651, the dynamic range of the microphone shall extend to a sound pressure level of at least 140 dB with a distortion factor of ≤ 10% If a windscreen is used to protect the microphone against exhaust air or exhaust gas, this shall not affect recording performance 7.3 Test environment The test environment shall be suitable for noise measurement in accordance with EN ISO 3744 and EN ISO 11201 Operating conditions 8.1 General The operating conditions shall be the same for the determination of both A-weighted single-event sound power levels and emission sound pressure levels at specified positions 8.2 Object to be measured and operating conditions Fastener driving tools shall be operated with the largest fasteners and the intended energy specified by the manufacturer's operating instructions Either single actuation or contact actuation is to be chosen Other systems of actuation, e.g continuous actuation, shall be reported On pneumatically powered fastener driving tools the operating pressure shall be adjusted in accordance with the purpose of application in such a way that the fasteners used are driven into the workpiece specified in 8.3 Specialities shall be reported (see note) The pressure used shall assure proper function of the fastener driving tool Non-pneumatic fastener driving tools, which are equipped with an impact force adjustment, shall be regulated by this device NOTE As a rule driving energy should be adjusted to ensure e.g staples are driven tight or flush with surface, nails and pins/brads are driven flush with the surface or countersunk up to mm 8.3 Workpiece The workpiece shall be sawn pinewood, free of knots and with a straight grain The average bulk density shall 3 be in the range of 0,42 g/cm to 0,48 g/cm and the average wood humidity shall be 12 % ± % The thickness of the workpiece shall be at least 1,2 times the length of the longest fastener used The position of insertion shall be at least 50 mm from the lateral surfaces of the workpiece 10 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) 8.4 Workpiece support The workpiece shall be supported by a bed of dry sand with the grain of the wood in a horizontal position and so that the surface of the workpiece is level led with the top of the sand The sand bed shall be of a size of at least 600 mm x 600 mm x 400 mm (L x W x H) The workpiece shall be surrounded at all lateral surfaces by a sand layer at least 120 mm wide 8.5 Position of the fastener driving tool The fastener driving tool shall be held in the hand driving downwards to the workpiece The manufacturer's operating instructions shall be followed The fasteners, with the exception of nails and pins/brads, shall be driven into the workpiece at an angle of approximately 90° to the grain of the wood, when seen from above During the measurement the operator shall not be positioned between the fastener driving tool and the microphone Measurement uncertainties See 5.4 and 6.4 for A-weighted single-event sound power level and emission sound pressure level determination respectively The measurement uncertainty of the emission values expressed as standard deviation of reproducibility, σR, varies from 0,5 dB to 2,0 dB with an average value of 1,5 dB (see EN ISO 11201) 10 Information to be recorded 10.1 General The report concerning the measurements carried out in accordance with this standard should contain the details mentioned in 8.1 through 8.5 10.2 Type and technical information on the fastener driving tool and the fasteners to be used (including limits) 10.3 Information about the operating conditions 10.4 Description of the measurement installation and surroundings 10.5 Measurement instruments used 10.6 Measured values and calculated results, containing a) all the individual results of the A-weighted single-event sound pressure level L'pA,1s for each measurement position; b) A-weighted single-event sound pressure level on the measurement surface L pA,1s,1m; c) A-weighted single-event sound power level LWA,1s; d) A-weighted single-event emission sound pressure level LpA,1s at position O (emission sound pressure level at the work station); 11 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) e) C-weighted peak emission sound pressure level LpC,peak at position O, if this value exceeds 130 dB 11 Information to be reported The test report shall contain the following information: a) statement whether the test was based on EN 12549 or not; b) place, date and person responsible for the test; c) details on the fastener driving tool and the fastener under test; d) the A-weighted single-event sound pressure level on the measurement surface L pA,1s,1m ; e) the A-weighted single-event sound power level LWA,1s ; f) the A-weighted single-event emission sound pressure level LpA,1s measured at position O (emission sound pressure level at the work station); g) the C-weighted peak emission sound pressure level LpC,peak measured at position O, if this value exceeds 130 dB 12 Declaration and verification of noise emission values For the purpose of noise declaration in accordance with EN ISO 4871, the declared noise emission values shall be based on test results obtained according to this noise test code Declared values shall be given as dual-numbers, which means the A-weighted single-event sound power level (LWA,1s) and / or the A-weighted single-event emission sound pressure level at the work station (LpA,1s) and, if applicable, the C-weighted peak emission sound pressure level (LpC,peak) with the corresponding uncertainty (KWA or KpA or KpC,peak ), as defined in EN ISO 4871 As long as there is no defined machinery specific standard deviation of reproducibility, σR, the uncertainty shall be established in accordance with EN ISO 4871 to KWA = KpA = 2,5 dB Example of declaration see annex B.2 of EN ISO 4871:1996 and annex B of this standard 12 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Annex A (informative) Calculation of equivalent continuous emission sound pressure level The equivalent continuous emission sound pressure level during the time T can be calculated from the single event emission sound pressure level and the number of driving processes: T T0 LpAeqT = LpA,1s - 10 lg dB + 10 lg (N) dB (A.1) where N is the number of driving processes during the time T and T0 = 1s (A.1) can be also written in the form LpAeqT = LpA,1s + 10 lg NT T dB (A.2) By choosing T = h as reference time and N = number of driving processes during this reference time, (A.2) gives the daily noise exposure at the work place providing that all sound reflections from room boundaries or obstacles other than the floor and table are negligible and the operating conditions correspond to those of this noise test code If reflections from room boundaries and other reflecting obstacles should taken into account EN ISO 11690-1 will provide some guidance 13 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Annex B (informative) Model form for the declaration of noise emission values of fastener driving tools operated with compressed air Declared dual-number noise emission values in accordance with EN ISO 4871 Fastener driving tool tested Manufacturer: Type: Identification No.: Type of fastener: Dimensions of fastener, in mm: Weight of fastener, in g: Fastener driving tools operated with compressed air: operating pressure, in bar: A-weighted single-event sound power level, LWA, 1s, in dB (ref pW): Uncertainty, KWA, in dB: A-weighted single-event sound pressure level at the work station, LpA, 1s,, in dB (ref 20 µPa): Uncertainty KpA, in dB: Values determined in accordance with noise test code EN 12549 and noise measurement standards EN ISO 3744 and EN ISO 11201 NOTE The sum of a measured noise emission value and its associated uncertainty represents an upper boundary of the range of values which is likely to occur in measurements 14 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Annex C (informative) Bibliography [1] EN 27574-1, Acoustics - Statistical methods for determining and verifying stated noise emission values of machinery and equipment ± Part 1: General considerations and definitions [2] EN 27574-2, Acoustics - Statistical methods for determining and verifying stated noise emission values of machinery and equipment ± Part 2: Methods for stated values for individual machines [3] EN 27574-3, 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 [4] EN 27574-4, 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 [5] prEN ISO 3740, Acoustics - Determination of sound power levels of noise sources - Guidelines for the use of basic standards [6] EN ISO 11200, Acoustics - Noise emitted by machinery and equipment - Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions [7] EN ISO 11690-1, Acoustics - Recommended practice for the design of low noise workplaces containing machinery ± Part 1: Noise control strategies 15 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/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 98/37/EC, amended by 98/79/EC on machinery Once this standard is cited in the Official Journal of the European Communities 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 relevant Essential Requirements of that Directive and associated EFTA regulations WARNING - Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard." 16 BS EN 12549:1999+A1:2008 EN 12549:1999+A1:2008 (E) Annex ZB (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 Communities 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 relevant Essential Requirements of that Directive and associated EFTA regulations WARNING – Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard." 17 BS EN 12549:1999 +A1:2008 British Standards Institution (BSI) BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsigroup.com You may also buy directly using a debit/credit card from the BSI Shop on the Website http://www.bsigroup.com/shop In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsigroup.com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsigroup.com Information regarding online access to British Standards via British Standards Online can be found at http://www.bsigroup.com/BSOL Further information about BSI is available on the BSI website at http://www.bsigroup.com Copyright BSI Group Headquarters 389 Chiswick High Road, London W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 www.bsigroup.com/standards Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Email: copyright@bsigroup.com