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1、BRITISH STANDARD BS EN 14389-1:2007 Road traffic noise reducing devices Procedures for assessing long term performance Part 1: Acoustical characteristics The European Standard EN 14389-1:2007 has the status of a British Standard ICS 93.080.30 BS EN 14389-1:2007 This British Standard was published un
2、der the authority of the Standards Policy and Strategy Committee on 31 January 2008 BSI 2008 ISBN 978 0 580 59418 2 National foreword This British Standard is the UK implementation of EN 14389-1:2007. The UK participation in its preparation was entrusted by Technical Committee B/509, Road equipment,
3、 to Subcommittee B/509/6, Fences for the attenuation of 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
4、. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication DateComments W - - - - - - - - - 7 7- 7 - - 7- - - A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - W W D - - w - - - - EN 14389-1:2007 (E) 2 Contents Fore
5、word3 Introduction.4 1 Scope 5 2 Normative references5 3 Terms and definitions .5 3.1 structural elements5 3.2 acoustic elements5 4 Requirements.5 4.1 General5 4.2 Declaration of the expected durability of acoustic performance .6 4.3 Assessment of actual acoustic durability by descriptive methods .7
6、 4.4 Assessment of actual durability by performance testing in situ7 5 Report .8 5.1 Reporting Requirements.8 5.2 Declaration of expected acoustic durability.8 5.3 Assessment of actual acoustic durability by descriptive methods .8 5.4 Assessment of actual acoustic durability by performance testing i
7、n-situ8 6 No performance determined (option) 9 Bibliography10 EN 14389-1:2007 (E) 3 Foreword This document (EN 14389-1:2007) has been prepared by Technical Committee CEN/TC 226 “Road equipment”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national
8、 standard, either by publication of an identical text or by endorsement, at the latest by June 2008, and conflicting national standards shall be withdrawn at the latest by June 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
9、 CEN shall not be held responsible for identifying any or all such patent rights. This document should be read in conjunction with: EN 14389-2, Road traffic noise reducing devices - Procedures for assessing long term performance - Part 2: Non-acoustical characteristics; CEN/TS 1793-5, Road traffic n
10、oise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound reflection and airborne sound insulation; EN 14388, Road traffic noise reducing devices - Specifications; EN 60721-3-4, Classification of environmental condition
11、s Part 3: Classification of groups of environmental parameters and their severities. Section 4: Stationary use at non-weatherprotected locations (IEC 60721-3- 4:1995). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to impl
12、ement 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
13、 and the United Kingdom. EN 14389-1:2007 (E) 4 Introduction Road Traffic Noise Reducing Devices alongside roads are not only required to fulfil their acoustic function and structural design requirements in accordance with appropriate European Standards, but also to maintain their performance for a r
14、easonably economic working life. The acoustic elements have to resist the actions of agents within the roadside environment that could significantly degrade their performance. The acoustic characteristics of a Road Traffic Noise Reducing Device can deteriorate significantly over the duration of its
15、working life if it is not installed or maintained in accordance with the manufacturers recommendations, or if the materials are not appropriate for the roadside environment. Until now no methods exist that could be used for the evaluation of the durability of acoustic characteristics of noise reduci
16、ng devices. Therefore new methods were introduced in CEN/TS 1793-5, which are designated in this standard. The use of these methods may produce values for the sound reflection DLRI of noise reducing devices that are different from the values of sound absorption DL resulting from EN 1793-1, which are
17、 the basis for the product characterisation of absorptive noise reducing devices. These differences should be disregarded as far as product characterisation is concerned. The values of sound reflection resulting from the tests according to CEN/TS 1793-5 are only used in this standard as a comparativ
18、e means for evaluation of the long-term durability. EN 14389-1:2007 (E) 5 1 Scope This European Standard defines the means for evaluating the acoustic durability of Road Traffic Noise Reducing Devices. In this European Standard, the sound absorption is characterised by the single-number rating of so
19、und reflection DLRI as defined in CEN/TS 1793-5. The airborne sound insulation is characterised by single-number rating of airborne sound insulation DLSI as defined in CEN/TS 1793-5. 2 Normative references The following referenced documents are indispensable for the application of this document. For
20、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CEN/TS 1793-5, Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics -
21、 In situ values of sound reflection and airborne sound insulation EN 60721-3-4, Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 4: Stationary use at non-weatherprotected locations (IEC 60721-3- 4:1995) 3 Terms a
22、nd definitions For the purposes of this document, the following terms and definitions apply. 3.1 structural elements elements whose primary function is to support or hold in place acoustic elements 3.2 acoustic elements elements whose primary function is to provide the acoustic performance of the de
23、vice 4 Requirements 4.1 General The manufacturer shall declare the estimated reduction in the acoustic performance of the Road Traffic Noise Reducing Device after 5 years, 10 years, 15 years and 20 years service in given exposure classes assuming its maintenance in accordance with the manufacturers
24、recommendations. The durability of the acoustic characteristics shall be assessed either by descriptive solutions based upon estimated performance of materials used, by reference to the appropriate European material standards, or comparative performance testing according to CEN/TS 1793-5. The assess
25、ment of performance may be carried out either by physical examination, or testing in accordance with CEN/TS 1793-5. - To be able to evaluate the variations of the acoustic characteristics in accordance with CEN/TS 1793-5, it is necessary, to have an evaluation of the acoustic characteristics corresp
26、onding to the installation service to carry out an initial in-situ test in accordance with 4.3. EN 14389-1:2007 (E) 6 4.2 Declaration of the expected durability of acoustic performance The manufacturer shall declare the expected durability of acoustic performance of the product in the format shown i
27、n Table 2, under the combination of all the typical exposure classes identified in Table 1. Where the evaluation of the product includes one or more of the special exposure classes identified in Table 1, the corresponding durability under each of these conditions shall be declared in a supplementary
28、 table as shown in Table 3. The durability of acoustic performance shall be expressed in dB as changes in DLRI and/or DLSI compared to the initial values, as defined in CEN/TS 1793-5. Table 1 - Environmental parameters and their classes EN 60721-3-4 Table Reference Environmental Condition Environmen
29、tal Parameter Typical Exposure Classes Special Exposure Classes 1 Climatic Conditions All 4K2 4K31 2 Special Climatic Conditions Water from sources other than rain 4Z7 3 Biological Conditions All 4B1 4B22 Sea Salts and Road Salts 4C2 Hydrogen Sulphide 4C3 Ozone 4C2 4C43 Nitrogen Oxides 4C4 4 Chemica
30、lly Active Substances All others 4C2 5 Mechanically Active Substances Dust (suspension) 4S2 6 Mechanical Conditions Non-stationary vibration 4M4 1 Class applicable to cold climates. 2 Class applicable in conditions where termite attack is likely. 3 Class only applicable in marine/coastal environment
31、. EN 14389-1:2007 (E) 7 Table 2 - Expected durability of acoustic performance as defined by CEN/TS 1793-5 Typical exposure classes Table 3 - Expected durability of acoustic performance as defined by CEN/TS 1793-5 Special exposure class(es) 4.3 Assessment of actual acoustic durability by descriptive
32、methods 4.3.1 Sound absorption Physical examination shall be on the basis of displacements or changes in the constitution or state of the absorptive material and/or its protective device that could affect their sound absorption performance (for example disintegration of fibres or fragile materials,
33、dust, water saturation, freeze and thaw, UV light, blocked pores, effects of location, displacement of elements). 4.3.2 Airborne sound insulation Physical examination shall be on the basis of visible displacements or changes in the constitution or state of the materials and/or its fixing devices tha
34、t could affect their airborne sound insulation performance (for example relative position and sealing between elements, holes, cracks, perforations, damaged coating, loosening of fixing systems). 4.3.3 Results of physical examination If the physical examination carried out in accordance with 4.3.1 a
35、nd 4.3.2 identifies changes that could affect the acoustic performance of an element, an in-situ test on the suspect area (the area of an element which has undergone changes which may affect the acoustic performance of that element) may be carried out in accordance with the requirements of 4.4. 4.4
36、Assessment of actual durability by performance testing in situ Testing shall be carried out in accordance with CEN/TS 1793-5. The results of the tests on the exposed section of Road Traffic Noise Reducing Device (single number rating of sound absorption and/or airborne sound insulation) shall be com
37、pared with results of similar in-situ tests on an Years of exposure 5 10 15 20 Change in sound absorption DLRI Change in airborne sound insulation DLSI Special exposure class(es) eg : Climatic Conditions: 4K3 Years of exposure 5 10 15 20 Change in sound absorption DLRI Change in airborne sound insul
38、ation DLSI EN 14389-1:2007 (E) 8 unexposed section obtained by testing of the installed Road Traffic Noise Reducing Device at the time of installation 5 Report 5.1 Reporting Requirements All reports shall include a full description of the geometry of the product evaluated, including details of proce
39、dures required by all appropriate material standards. The reports shall include the following: a) reference to this European Standard (EN 14389-1:2007); b) name, with a dated signature, of the person responsible for the report; c) exact identification of evaluated product, name and address of the ma
40、nufacturer; d) full description of the materials, their thickness and densities of sound absorptive elements; e) drawing showing the cross-section of the evaluated element with permitted manufacturing tolerances; 5.2 Declaration of expected acoustic durability In addition to the requirements describ
41、ed in 5.1 the report shall also include: a) expected durability of acoustic performance expressed as in Table 2 and/or Table 3, under the exposure conditions as described in Table 1; b) maintenance requirements corresponding to the exposure conditions. 5.3 Assessment of actual acoustic durability by
42、 descriptive methods In addition to the requirements described in 5.1 the report shall also include: a) name and address of the evaluating body; b) actual duration and conditions of exposure; c) actual maintenance regime; d) results of evaluation. 5.4 Assessment of actual acoustic durability by perf
43、ormance testing in-situ In addition to the requirements described in 5.1 the report shall also include: a) name and address of the evaluating body; b) actual duration and conditions of exposure; c) actual maintenance regime; d) comparison of the results of tests carried out in accordance with the pr
44、ocedure described in 4.4. EN 14389-1:2007 (E) 9 6 No performance determined (option) This standard permits specifying authorities to indicate where there are no requirements for acoustic durability (NPD no performance determined). EN 14389-1:2007 (E) 10 Bibliography 1 EN 14388, Road traffic noise reducing devices - Specifications 2 EN 14389-2,