SIST EN 405:2002
(Main)Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking
Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, marking
This European Standard specifies the performance requirements, test methods and marking requirements for valved filtering half masks incorporating either gas or combined filters as respiratory protective devices except for escape purposes. It does not cover gas filtering half masks which do not have valves or are fitted only with exhalation valves. It does not cover devices designed for use in circumstances where there is or might be an oxygen deficiency (oxygen less than a volume fraction of 17 %).
Laboratory and practical performance tests are included for the assessment of compliance with the requirements.
Atemschutzgeräte - Filtrierende Halbmasken mit Ventilen zum Schutz gegen Gase oder Gase und Partikeln - Anforderungen, Prüfung, Kennzeichnung
Diese Europäische Norm legt Leistungsanforderungen, Prüfverfahren und Anforderungen an die Kennzeichnung für filtrierende Halbmasken mit Ventilen, die entweder Gasfilter oder Kombinationsfilter enthalten, als Atemschutzgeräte, außer für Fluchtzwecke, fest. Sie gilt nicht für gasfiltrierende Halbmasken, die keine Ventile haben oder nur mit Ausatemventilen ausgerüstet sind. Sie gilt nicht für Geräte, die zum Einsatz unter Umständen bestimmt sind, bei denen Sauerstoff-Mangel (Sauerstoff weniger als ein Volumenanteil von 17 %) gegeben ist oder sein kann.
Laborprüfungen und praktische Leistungsprüfungen sind enthalten, um die Übereinstimmung mit den Anforderungen feststellen zu können.
Appareils de protection respiratoire - Demi-masques filtrants a soupapes contre les gaz ou contre les gaz et les particules - Exigences, essais, marquage
La présente Norme Européenne spécifie les exigences de performance, les méthodes d'essais et les exigences de marquage applicables aux demi-masques filtrants pourvus de soupapes et de filtres antigaz ou de filtres combinés, utilisés comme appareils de protection respiratoire, sauf pour l'évacuation. Elle ne s'applique pas aux demi-masques filtrants antigaz dépourvus de soupapes ou uniquement pourvus de soupapes expiratoires. Elle ne s'applique pas non plus aux appareils conçus pour etre utilisés dans des situations ou il y a ou pourrait y avoir un défaut d'oxygene (teneur en oxygene inférieure a 17 % en volume).
Elle contient des essais pratiques de performance et des essais de laboratoire pour s'assurer de la conformité avec les spécifications.
Oprema za varovanje dihal - Polobrazna maska z ventili za varovanje pred plini ali plini in delci - Zahteve, preskušanje, označevanje
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Respiratory protective devices - Valved filtering half masks to protect against gases or gases and particles - Requirements, testing, markingAppareils de protection respiratoire - Demi-masques filtrants a soupapes contre les gaz ou contre les gaz et les particules - Exigences, essais, marquageAtemschutzgeräte - Filtrierende Halbmasken mit Ventilen zum Schutz gegen Gase oder Gase und Partikeln - Anforderungen, Prüfung, Kennzeichnung13.340.30Varovalne dihalne napraveRespiratory protective devicesICS:SIST EN 405:2002enTa slovenski standard je istoveten z:EN 405:200101-junij-2002SIST EN 405:2002SLOVENSKI
STANDARDSIST EN 405:19961DGRPHãþD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 405December 2001ICS 13.340.30Supersedes EN 405:1992English versionRespiratory protective devices - Valved filtering half masks toprotect against gases or gases and particles - Requirements,testing, markingAppareils de protection respiratoire - Demi-masquesfiltrants à soupapes contre les gaz ou contre les gaz et lesparticules - Exigences, essais, marquageAtemschutzgeräte - Filtrierende Halbmasken mit Ventilenzum Schutz gegen Gase oder Gase und Partikeln -Anforderungen, Prüfung, KennzeichnungThis European Standard was approved by CEN on 8 November 2001.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, 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© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 405:2001 E
EN 405:2001 (E)2ContentspageForeword.4Introduction.51Scope.62Normative references.63Terms and definitions.64Description.65Classification.75.1General.75.2Types of gas filtering half masks.75.2.1Valved gas filtering half masks.75.2.2Valved multi-type gas filtering half masks.75.2.3Valved combined filtering half masks.75.3Designs of combined valved filtering half masks.75.4Classes of valved gas filtering half masks.76Designation.87Requirements.87.1General.87.2Nominal values and tolerances.87.3Visual inspection.87.4Packaging.97.5Practical performance.97.6Leakage.97.7Filter penetration/capacity.97.7.1Particle filter penetration.97.7.2Gas filtering capacity.107.8Finish of parts.107.9Inhalation and exhalation valves.117.10Breathing resistance.117.10.1General.117.10.2Inhalation resistance.117.10.3Exhalation resistance.127.11Clogging.127.11.1General.127.11.2Devices with separable particle filters.127.11.3Devices with integral or separable particle filters.127.11.4Exhalation resistance.137.12Compatibility with skin.137.13Flammability.137.14Carbon dioxide content of the inhalation air.137.15Head harness.137.16Field of vision.147.17Demountable parts.148Testing.148.1General.148.2Visual inspection.148.3Conditioning.148.3.1General.148.3.2Donning and doffing.14
EN 405:2001 (E)38.3.3Temperature.148.3.4Mechanical strength.158.4Practical performance.158.4.1General.158.4.2Walking test.158.4.3Work simulation test.158.5Inward Leakage.168.5.1General.168.5.2Principle.168.5.3Apparatus.168.5.4Conditioning and number of test samples.178.5.5Test subjects.178.5.6Preparation of samples.178.5.7Test procedure.188.5.8Test using sulfur hexafluoride as test agent.198.5.9Test using sodium chloride as test agent.208.6Gas filtering capacity.228.7Flammability.228.8Carbon dioxide content of the inhalation air.228.9Breathing resistance.238.10Strength of attachment exhalation valve housing.249Marking.249.1Packaging.249.2Valved gas filtering half mask with separable particle filters.249.2.1Valved gas filtering half mask.249.2.2Separable particle filters.259.3Valved gas filtering half masks with integral particle filters.2510Information supplied by the manufacturer.25Annex A (informative)
Marking.40Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.41Bibliography.42
EN 405:2001 (E)4ForewordThis European Standard has been prepared by Technical Committee CEN/TC 79 “Respiratory protective devices“,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 2002, and conflicting national standards shall be withdrawn at the latest byJune 2002.This European Standard supersedes EN 405:1992.This draft European Standard has been prepared under a mandate given to CEN by the European Commissionand the European Free Trade Association, and supports essential requirements of EU Directive 89/686/EEC.For relationship with EU Directive, see informative annex ZA, which is an integral part of this standard.The annexes A and ZA are informative.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, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.
EN 405:2001 (E)5IntroductionA given respiratory protective device can only be approved when the individual components satisfy therequirements of the test specification which may be a complete standard or part of a standard, and practicalperformance tests have been carried out successfully on complete apparatus where specified in the appropriatestandard. If for any reason a complete apparatus is not tested then simulation of the apparatus is permittedprovided the respiratory characteristics and weight distribution are similar to those of the complete apparatus.
EN 405:2001 (E)61 ScopeThis European Standard specifies the performance requirements, test methods and marking requirements forvalved filtering half masks incorporating either gas or combined filters as respiratory protective devices except forescape purposes. It does not cover gas filtering half masks which do not have valves or are fitted only withexhalation valves. It does not cover devices designed for use in circumstances where there is or might be anoxygen deficiency (oxygen less than a volume fraction of 17 %).Laboratory and practical performance tests are included for the assessment of compliance with the requirements.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 132, Respiratory protective devices - Definition of terms and pictograms.EN 134, Respiratory protective devices - Nomenclature of components.EN 141, Respiratory protective devices - Gas filters and combined filters - Requirements, testing, marking.EN 143, Respiratory protective devices - Particle filters - Requirements, testing, marking.EN 371, Respiratory protective devices - AX gas filters and combined filters against low boiling organic compounds- Requirements, testing, marking.EN 372, Respiratory protective devices - SX gas filters and combined filters against specific named substances -Requirements, testing, marking.3 Terms and definitionsFor the purposes of this European Standard the terms and definitions in EN 132 and the nomenclature given inEN 134 apply.4 DescriptionA valved filtering half mask covers the nose and mouth and the chin and has both inhalation and exhalation valvesanda) consists entirely or substantially of filter material or,b) comprises a facepiece in which the gas filter(s) form(s) an inseparable part of the device and where particlefilters can be replaceable.It provides adequate sealing for the intended use on the face of the wearer against the ambient atmosphere, whenthe skin is dry or moist and when the head is moved.Inhaled air enters through the filter material and through an inhalation valve(s). Exhaled air passes through anexhalation valve(s) to the ambient atmosphere.
EN 405:2001 (E)7Since the devices are discarded on depletion of the gas filter, it is not expected that replaceable components will beprovided, e.g. valves or head harness.In addition to providing protection against gases and vapours these devices can be designed to also protectagainst solid and liquid aerosols.Gas filters remove specified gases and vapours. Combined filters remove dispersed solid and liquid particles andspecified gases and vapours.5 Classification5.1 GeneralGas and combined valved filtering half masks are classified into types and classes according to their applicationand protection capacity.5.2 Types of gas filtering half masks5.2.1 Valved gas filtering half masksType FFA — for use against certain organic gases and vapours with a boiling point higher than 65 °C as specifiedby the manufacturer.Type FFB — for use against certain inorganic gases and vapours as specified by the manufacturer (excludingcarbon monoxide).Type FFE — for use against sulfur dioxide and other acid gases and vapours as specified by the manufacturer.Type FFK — for use against ammonia and organic ammonia derivatives as specified by the manufacturer.Type FFAX — for use against certain low boiling organic compounds as specified by the manufacturer.Type FFSX — for use against specific named gases and vapours.5.2.2 Valved multi-type gas filtering half masksGas valved filtering half masks which are a combination of two or more of the above types and which meet therequirements of each type separately.5.2.3 Valved combined filtering half masksGas or multi-type valved gas filtering half masks incorporating a particle filter.5.3 Designs of combined valved filtering half masksThere are two designs of valved combined filtering half masks described in this European Standard: one withintegral particle filter(s), the second one with replaceable particle filter(s). Examples of classifications are:FFA1P1; FFA1P2; FFA1P3D.„D“ stands for optional clogging with dolomite.5.4 Classes of valved gas filtering half masksValved filtering half masks may incorporate gas filters of types listed in 5.2.1 or 5.2.2, belonging to one of the twofollowing classes relating to their capacity:
EN 405:2001 (E)8Class 1 — low capacity FFGas1 filtering half mask e.g. FFA1;Class 2 — medium capacity FFGas2 filtering half mask e.g. FFB2.The protection provided by Class 2 devices includes that provided by the corresponding Class 1 device of the sametype.FFAX and FFSX devices are not classified in accordance with this clause.6 DesignationValved filtering half masks meeting the requirements of this European Standard shall be designated in the followingmanner:Valved filtering half mask EN 405, type class, optionEXAMPLEValved filtering half mask EN 405 FFA2P3D7 Requirements7.1 GeneralIn all tests, all test samples shall meet the requirements.7.1.1
Materials used shall be suitable to withstand handling and wear over the period for which the valved filteringhalf mask is designed to be used.Testing shall be done in accordance with 8.4.After undergoing the treatment described in 8.3.2 and 8.3.3 none of the devices shall collapse or shall havesuffered mechanical failure of the facepiece body or straps.7.1.2
Any material of the filter media or any gaseous products that may be released by the airflow through thefilter shall not be known to constitute a hazard or nuisance for the wearer.Testing shall be done in accordance with 8.2.7.1.3
Where the device can be used for more than a single shift (single-use), the materials used shall withstandthe cleaning and disinfecting agents recommended by the manufacturer.Testing shall be done in accordance with Table 6 and 8.2.7.2 Nominal values and tolerancesUnless 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 limit deviation of± 5 %. Unless otherwise specified, the ambient temperature for testing shall be from 16 °C to 32 °C, and thetemperature limits shall be subject to a limit deviation of ± 1 °C.7.3 Visual inspectionThe visual inspection shall also include the marking and information supplied by the manufacturer.
EN 405:2001 (E)97.4 PackagingValved filtering half masks shall be offered for sale packaged in such a way that they are protected againstmechanical damage and contamination before use.They shall be factory sealed to protect the filter media against environmental influences in such a way, that thebreaking of the factory sealing can be identified.Testing shall be done in accordance with 8.2.7.5 Practical performanceThe device shall undergo practical performance tests under realistic conditions. These general tests serve thepurpose of checking the equipment for imperfections that cannot be determined by the tests described elsewhere inthis European Standard.Where practical performance tests show the apparatus has imperfections related to wearer's acceptance, the testhouse shall provide full details of those parts of the practical performance tests which revealed these imperfections.Testing shall be done in accordance with 8.4.7.6 LeakageWhen the valved filtering half mask is tested in accordance with 8.5, the values of inward leakage (total inwardleakage excluding filter penetration) shall comply with the following.At least 46 out of the 50 individual results for the inward leakage over each of the exercise periods as defined in 8.5(i.e. 10 subjects
5 exercise periods) shall be not greater than 5 %.In addition, at least 8 out of the 10 individual wearer arithmetic means of measured values (10 subjects) for theinward leakage, averaged over all exercise periods shall be not greater than 2 %.Testing shall be done in accordance with 8.5.7.7 Filter penetration/capacity7.7.1 Particle filter penetrationFor all devices the penetration of the particle filter of the valved filtering half mask, whether with integral orseparable filters, shall meet the requirements given in Table 1.Table 1 — Particle filter penetrationClassificationMaximum initial penetration of test aerosols at 95 l/minSodium chloride%Paraffin oil%FFGasP12020FFGasP266FFGasP311This requirement shall be met before and after conditioning procedures specified in 8.3.3.
EN 405:2001 (E)10Testing shall be done in accordance with EN 143.Separable particle filters, other than prefilters, designed to be used additionally with devices other than devicesaccording to this standard shall meet the requirements of EN 143.7.7.2 Gas filtering capacity7.7.2.1
When tested in accordance with 8.6 the devices shall meet the requirements given in Table 2 for minimumbreakthrough times for FFGas1 and/or FFGas2 devices and/or the requirements of EN 371 or EN 372 asappropriate.Table 2 — Gas filtering capacityClassificationTest agentTest gasconcentration in airBreakthroughconcentrationMinimumbreakthroughtime% byvolumemg/lml/m3minFFA1Cyclohexane (C6H12)0,13,51070FFB1Chlorine (Cl2)0,13,00,520Hydrogen sulfide (H2S)0,11,41040Hydrogen cyanide(HCN)0,11,110a25FFE1Sulfur dioxide (SO2)0,12,7520FFK1Ammonia (NH3)0,10,72550FFA2Cyclohexane (C6H12)0,517,51035FFB2Chlorine (Cl2)0,515,00,520Hydrogen sulfide (H2S)0,57,11040Hydrogen cyanide(HCN)0,55,610a25FFE2Sulfur dioxide (SO2)0,513,3520FFK2Ammonia (NH3)0,53,52540NOTE
The minimum breakthrough time is intended only for laboratory tests under standardizedconditions. It does not give an indication of the possible service time in practical use. Possible service timescan differ from the breakthrough times determined according to this European Standard in both directionspositive or negative depending on the conditions of use.a C2N2 may sometimes be present in the effluent air. The total concentration of (C2N2 + HCN)shall not exceed 10 ml/m3.7.7.2.2
Where a device is a combination of types, it shall meet the requirements of each type separately.7.7.2.3
Test requirements shall apply to the capacity of the complete device.7.8 Finish of partsParts of the device likely to come into contact with the wearer shall have no sharp edges or burrs.Testing shall be done in accordance with 8.2.
EN 405:2001 (E)117.9 Inhalation and exhalation valves7.9.1
Inhalation valve(s) and exhalation valve(s) shall function correctly in all orientations.Testing shall be done in accordance with 8.9.7.9.2
Exhalation valve(s) shall be protected against or be resistant to dirt and mechanical damage. They may beshrouded or may include any other device that may be necessary to comply with 7.6.Testing shall be done in accordance with 8.2.7.9.3
Exhalation valve(s) shall continue to operate correctly after a continuous exhalation flow of 300 l/min over aperiod of 30 s.Testing shall be done in accordance with 8.9.7.9.4
The exhalation valve housing shall show no signs of damage or of being loosened.Testing shall be done in accordance with 8.10.7.10 Breathing resistance7.10.1 GeneralThe breathing resistances of the various classes of valved gas and combined filtering half masks shall meet therequirements of 7.10.2 and 7.10.3.7.10.2 Inhalation resistance7.10.2.1 Valved gas filtering half masksWhen tested in accordance with 8.9 the inhalation resistance shall meet the requirements given in Table 3.Table 3 — Inhalation resistance: valved gas filtering half masksClassificationMaximum inhalation resistancembar30 l/min95 l/minFFGas11,04,0FFGas21,45,6FFAX1,45,6FFSX1,45,67.10.2.2 Valved combined filtering half masksWhen tested in accordance with 8.9, the inhalation resistance of all devices, whether with separable or integralparticle filters, shall meet the requirements given in Table 4.
EN 405:2001 (E)12Table 4 — Inhalation resistance: valved combined filtering half masksClassificationMaximum inhalation resistancembar30 l/min95 l/minFFGas1P11,66,1FFGas1P21,76,4FFGas1P32,07,0FFGas2P12,07,7FFGas2P22,18,0FFGas2P32,48,6FFAXP12,07,7FFAXP22,18,0FFAXP32,48,6FFSXP12,07,7FFSXP22,18,0FFSXP32,48,67.10.3 Exhalation resistanceWhen tested in accordance with 8.9, the exhalation resistance of the valved gas or combined filtering half maskshall not exceed 3 mbar.7.11 Clogging7.11.1 GeneralThis test is applicable to all valved combined filtering half masks. For single use devices only, the clogging test isoptional.7.11.2 Devices with separable particle filtersWhere the particle filters of devices with separable particle filters are claimed only to meet this standard, the filtersshall meet the requirements of 7.11.3.Where the particle filters of devices with separable particle filters are additionally claimed to meet EN 143, the filters
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