SIST EN 13274-7:2003
(Main)Respiratory protective devices - Methods of test - Part 7: Determination of particle filter penetration
Respiratory protective devices - Methods of test - Part 7: Determination of particle filter penetration
This European Standard specifies the procedure for testing particle filter penetration for respiratory protective devices.
Atemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung des Durchlasses von Partikelfiltern
Diese Europäische Norm legt das Verfahren zum Messen des Aerosoldurchlasses von Partikelfiltern für Atemschutzgeräte fest.
Appareils de protection respiratoire - Méthodes d'essai - Partie 7: Détermination de la pénétration des filtres a particules
La présente Norme européenne spécifie le mode opératoire utilisé pour vérifier la pénétration des filtres a particules pour appareils de protection respiratoire.
Oprema za varovanje dihal - Metode preskušanja - 7. del: Ugotavljanje penetracije delcev v filter
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Respiratory protective devices - Methods of test - Part 7: Determination of particle filter penetrationOprema za varovanje dihal - Metode preskušanja - 7. del: Ugotavljanje penetracije delcev v filterAppareils de protection respiratoire - Méthodes d'essai - Partie 7: Détermination de la pénétration des filtres a particulesAtemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung des Durchlasses von PartikelfilternTa slovenski standard je istoveten z:EN 13274-7:2002SIST EN 13274-7:2003en13.340.30ICS:SLOVENSKI
STANDARDSIST EN 13274-7:200301-april-2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13274-7December 2002ICS 13.340.30English versionRespiratory protective devices - Methods of test - Part 7:Determination of particle filter penetrationAppareils de protection respiratoire - Méthodes d'essai -Partie 7: Détermination de la pénétration des filtres àparticulesAtemschutzgeräte - Prüfverfahren - Teil 7: Bestimmung desDurchlasses von PartikelfilternThis European Standard was approved by CEN on 23 October 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 13274-7:2002 E
EN 13274-7:2002 (E)2ContentspageForeword.3Introduction.31Scope.32Normative references.43Terms and definitions.44Pre-requisites.45General test requirements.56Sodium chloride test method.56.1Principle.56.2Test equipment.56.3Test conditions.66.4Procedure.66.5Calculation of the penetration.67Paraffin oil test method.77.1Principle.77.2Test equipment.77.3Test conditions at filter.77.4Procedure.77.5Calculation of the penetration.8Annex A (normative)
Test results - Uncertainty of measurements.15Annex ZA (informative)
Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.16
EN 13274-7:2002 (E)3ForewordThis document (EN 13274-7:2002) has been prepared by Technical Committee CEN/TC 79 "Respiratory protectivedevices", the secretariat of which is held by DIN.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 June 2003, and conflicting national standards shall be withdrawn at the latest byJune 2003.This document has been prepared under a mandate given to CEN by the European Union and the European FreeTrade Association, and supports essential requirements of EU Directive(s).For the relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.It is one of several parts, which are as follows:Part 1: Determination of inward leakage and total inward leakagePart 2: Practical performance testsPart 3: Determination of breathing resistancePart 4: Flame testsPart 5: Climatic conditionsPart 6: Determination of carbon dioxide content of the inhalation airPart 7: Determination of particle filter penetrationPart 8: Determination of dolomite dust cloggingAnnex A is normative.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.IntroductionThis European Standard is intended as a supplement to the specific device standards for respiratory protectivedevices. Test methods are specified for complete or parts of devices. If deviations from the test method given inthis standard are necessary, these deviations will be specified in the relevant device standard.1 ScopeThis European Standard specifies the procedure for testing particle filter penetration for respiratory protectivedevices.
EN 13274-7:2002 (E)42 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 132, Respiratory protective devices — Definitions of terms and pictograms.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 132
together with the followingapply.3.1ambient conditionsatmosphere where the temperature is (16 to 32) °C and the relative humidity is (20 to 80) %3.2dry atmosphereatmosphere where the relative humidity is less than 20 %3.3wet atmosphereatmosphere where the relative humidity is greater than or equal to 95 %4 Pre-requisitesIn order to implement this Part of EN 13274, at least the following parameters need to be specified in theappropriate device standard:¾ items to be tested;¾ number of samples;¾ test method;¾ flow rate through the filter;¾ sequence of conditioning phases, where more than one is required;¾ specification of any observations to be carried out;¾ sample preparation and orientation;¾ sample holding;¾ pass/fail criteria;¾ any deviations from this method.
EN 13274-7:2002 (E)55 General test requirementsUnless otherwise specified, the values stated in this European Standard are expressed as nominal values. Exceptfor temperature limits, values which are not stated as maxima or minima shall be subject to a tolerance of + 5 %.Unless otherwise specified, the ambient temperature for testing shall be between 16 °C and 32 °C and thetemperature limits shall be subject to an accuracy of + 1 °C.6 Sodium chloride test method6.1 PrincipleAn aerosol of sodium chloride particles is generated by atomizing an aqueous solution of the salt and evaporatingthe water. The concentration of this aerosol is measured before and after the filter under test by means of flamephotometry. Accurate determinations are possible in the range < 0,001 % to 100 % filter penetration.When an alternative design of test equipment to that given in 6.2 is used, it shall be correlated directly with thisreference method and shall be shown to be equivalent over the whole of the operational range.6.2 Test equipmentThe apparatus is shown schematically in Figure 1. The aerosol is generated by using a Collison atomizer filled witha 1 % solution of sodium chloride. The atomizer, an example of which is shown in Figure 2, consists of a glassreservoir into which is sealed an atomizer head having three spray nozzles. Air is supplied to the atomizer at apressure of 3,45 bar and the resulting liquid spray impinges on a baffle which removes the large particles. Theparticles which do not impact are removed in the air flow and, on mixing with dry air, the water evaporates leaving adry sodium chloride aerosol.The aerosol produced by this method is polydisperse with a mass median particle diameter of approximately0,6 µm. The particle size distribution is given in Figure 3. It has been found that the aerosol remains constant,within acceptable limits, with respect to particle size and concentration provided that the supply pressure is in therange from 3,3 bar to 3,6 bar and the flow rate of air to the three nozzles is from 12,5 I/min to 13,0 I/min. The outputis mixed with 82 I/min of dry air in a chamber with a minimum volume of 1 750 cm3 giving a total flow rat
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