SIST EN 352-1:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Varovala sluha - Splošne zahteve - 1. del: NaušnikiGehörschützer - Allgemeine Anforderungen - Teil 1: KapselgehörschützerProtecteurs individuels contre le bruit - Exigences générales - Partie 1: Serre-teteHearing protectors - General requirements - Part 1: Ear-Muffs13.340.20Varovalna oprema za glavoHead protective equipmentICS:Ta slovenski standard je istoveten z:EN 352-1:2002SIST EN 352-1:2003en01-januar-2003SIST EN 352-1:2003SLOVENSKI
STANDARDSIST EN 352-1:19961DGRPHãþD



SIST EN 352-1:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 352-1October 2002ICS 13.340.20Supersedes EN 352-1:1993English versionHearing protectors - General requirements - Part 1: Ear-MuffsProtecteurs individuels contre le bruit - Exigencesgénérales - Partie 1: Serre-têteGehörschützer - Allgemeine Anforderungen - Teil 1:KapselgehörschützerThis European Standard was approved by CEN on 18 August 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 352-1:2002 ESIST EN 352-1:2003



EN 352-1:2002 (E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Terms and definitions.54Requirements.64.1Sizing.64.2Materials and construction.74.3Performance.75Marking.96Information supplied by the manufacturer.96.1General.96.2Wearer information.96.3Additional information.11Annex A
(informative)
Uncertainty of measurement and interpretation of test results.12Annex ZA
(informative) Clauses of this European standard addressing essential requirementsor other provisions of EU Directives.14Bibliography.15SIST EN 352-1:2003



EN 352-1:2002 (E)3ForewordThis document (EN 352-1:2002) has been prepared by Technical Committee CEN/TC 159, "Hearing protectors",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 orby endorsement, at the latest by April 2003, and conflicting national standards shall be withdrawn at the latest byApril 2003.This document supersedes EN 352-1:1993.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), 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 followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.Annex A is informative.SIST EN 352-1:2003



EN 352-1:2002 (E)4IntroductionThis standard for ”Hearing Protectors - General requirements - Ear-muffs”, sets requirements for personal hearingprotection devices in relation to Directive 89/686/EEC - Personal Protective Equipment.The particular requirement in relation to the ability of hearing protectors to reduce noise below daily limit levels isaddressed in the standard by requiring the sound attenuation of the hearing protectors, measured in accordancewith EN 24869-1, to be not less than a specified minimum.
Further, by requiring that the measured soundattenuation be declared, the selection of suitable hearing protectors for individual circumstances may beundertaken according to established practice.EN 352-1 deals with requirements for ear-muffs, EN 352-2 with ear-plugs, EN 352-3 with ear-muffs attached toindustrial safety helmets. EN 13819 deals with testing plans common to all types of hearing protectors covered bythis series of ENs, and is in two Parts; Part 1: Physical test methods, and Part 2: Acoustic test methods.Additional safety requirements and the associated test procedures for level-dependent ear-muffs are contained inEN 352-4, for ear-muffs with active noise reduction in prEN 352-5, for ear-muffs with audio communications in prEN352-6 and for level-dependent ear-plugs in prEN 352-7.The Parts of EN 352, other than Parts 1, 2 and 3, cover the performance of functions additional to passive hearingprotection. Hearing protectors which incorporate one or more of these functions are subject to the requirementsand tests of each of the relevant Parts of EN 352, including Parts 1, 2 or 3, as appropriate.An associated standard EN 458 covers selection, use, care and maintenance of hearing protectors.The requirements of the standard are concerned primarily with the physical and acoustic performance of the ear-muffs.The sizing requirements enable the great majority of the industrial population to be fitted satisfactorily by ”mediumsize range” ear-muffs. Populations of other sizes may be accommodated by ”small size range” or ”large size range”ear-muffs, which are required to be accompanied by information regarding the range of sizes which they aredesigned to fit.The standard also calls for the values of sound attenuation afforded by the ear-muffs (measured in accordance withEN 24869-1) in order to assist purchasers in selecting the most appropriate model of ear-muffs for their needs.Minimum values of sound attenuation are also specified.A maximum variability in insertion loss, measured objectively after a series of performance tests, is specified. Theobjective test method only facilitates the making of comparative measurements, and the insertion loss valuesobtained will differ from the measured sound attenuation values.The latter, which require the ear-muff to be tested whilst being worn by human test subjects, is regarded asproviding the reference test method for the measurement of the acoustic performance of hearing protectorsSIST EN 352-1:2003



EN 352-1:2002 (E)51 ScopeThis part of the standard specifies requirements for construction, design, performance, marking and userinformation for ear-muffs.In particular, it specifies the sound attenuation of the ear-muffs, measured in accordance with EN 24869-1.This part of the standard does not deal with ear-muffs for attachment to a helmet or which are part of a helmet.Ergonomic aspects are addressed by taking into account, within the requirements, the interaction between thewearer, the device and where possible the working environment in which the device is likely to be used (see AnnexZA and EN 458).2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 13819-1:2002, Hearing protectors - Testing - Part 1: Physical test methodsEN 13819-2:2002, Hearing protectors - Testing - Part 2: Acoustic test methodsEN ISO 4869-2, Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levelswhen hearing protectors are worn (ISO 4869-2:1994)3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply:3.1cuphollow component which is mounted on the equivalent headband and to which a cushion and a liner are usuallyfitted3.2cushiondeformable component, usually containing a foam plastic or fluid filling, fitted to the rim of the cup to improve thecomfort and fit of the ear-muffs on the head3.3lineracoustically absorptive material contained within the cup which is intended to increase the attenuation of the ear-muffs at certain frequencies3.4ear-muffhearing protector consisting of a cup to be pressed against each pinna or of a circumaural cup to be pressedagainst the head around each pinna. The cups may be pressed against the head with a headband or by means ofa device attached to a safety helmet or other equipment3.4.1over-the-head ear-muffear-muff designed to be worn with the headband passing over the top of the headSIST EN 352-1:2003



EN 352-1:2002 (E)63.4.2behind-the-head ear-muffear-muff designed to be worn with the headband passing behind the head3.4.3under-the-chin ear-muffear-muff designed to be worn with the headband passing under the chin3.4.4universal ear-muffear-muff designed to be worn as an over-the-head, a behind-the-head and an under-the-chin ear-muff3.5headbandband, usually of metal or plastics, designed to enable the ear-muffs to fit securely around the ears by exerting forceagainst the cups and pressure through the cushions3.6headstrapflexible strap fitted to each cup, or to the headband close to the cup.
It is designed to support behind-the-head andunder-the-chin ear-muffs by passing over, and resting on top of, the head3.7insertion lossmean algebraic difference in decibels between the one-third octave band sound pressure level, measured by themicrophone of the acoustic test fixture in a specified sound field under specified conditions, with the hearingprotector absent, and the sound pressure level with the hearing protector on, with other conditions identical3.8sound attenuationfor a given test signal, the mean difference in decibels between the threshold of hearing with and without thehearing protector in place, for a panel of test subjects3.9hygiene coverstemporary, disposable covers fitted over the cushions and intended to protect them from the effects of dirt,perspiration, cosmetics, etc4 Requirements4.1 SizingEar-muffs shall be classified into three size ranges, ‘Medium size range’, ‘Small size range’ and ‘Large size range'.‘Medium size range' ear-muffs shall be so classified if their adjustability complies with clause 4.3.2.2 a) and 4.3.2.2b), as appropriate.'Small size range' ear-muffs shall be so classified if their adjustability complies with 4.3.2.3 a) and 4.3.2.3 b), asappropriate.'Large size range' ear-muffs shall be so classified if their adjustability complies with 4.3.2.4 a) and 4.3.2.4 b), asappropriate.'Small size range’ and ‘large size range' ear-muffs shall be accompanied by the information specified in 6.2 g).NOTE A model of ear-muffs may fall into more than one size range.SIST EN 352-1:2003



EN 352-1:2002 (E)74.2 Materials and construction4.2.1
Materials4.2.1.1 Those parts of the ear-muffs that may come into contact with the skin shall be non-staining, soft, pliable andnot known to be likely to cause skin irritation, allergic reaction or any other adverse effect on health.4.2.1.2 All materials shall be visibly unimpaired after cleaning and disinfection by the methods specified by themanufacturer.4.2.2 Construction4.2.2.1 All parts of the ear-muffs shall be rounded, finished smooth and be free from sharp edges.4.2.2.2
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