BSENIS021904-3:2018 BSl Standards Publication Health and safety in welding and allied processes - Requirements, testing and marking of equipment for air filtration Part 3: Determination of the capture efficiency of on-torch welding fume extraction devices (IS0 21904-3:2018) bsi. BSENIS021904-3:2018 BRITISH STANDARD National foreword ThisBritish Standard is theUK implementationof ENIS021904-3:2018. The UKparticipation initspreparation was entrustedtoTechnical Committee WEE/40, Health and safety in welding 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 ofa contract.Users areresponsiblefor its correctapplication. @TheBritishStandards Institution2018 Published by BSI Standards Limited 2018 ISBN9780580972621 ICS25.160.01;13.100 Compliance with a British Standard cannot confer immunity from legalobligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon30April2018. Amendments/corrigendaissuedsincepublication Date Text affected EUROPEANSTANDARD EN IS0 21904-3 NORMEEUROPEENNE EUROPAISCHE NORM March2018 ICS13.100;25.160.01 EnglishVersion Health and safety in welding and allied processes - Requirements, testing and marking of equipment for airfiltration-Part 3: Determination of the capture efficiency of on-torch welding fume extraction devices (IS0 21904-3:2018) Hygiene et sécurite en soudage et techniques Arbeits-und Gesundheitsschutz beim Schweifen und connexes - Exigences, essais et marquage bei verwandten Verfahren -Anforderungen, Prifung des équipements de filtration d'air - Partie 3: und Kennzeichnung von Luftreinigungssystemen Détermination de I'efficacité de captage des Teil 3: Bestimmung des Erfassungsgrades torches aspirantes (IS0 21904-3:2018) von brennerintegrierten Absaugeinrichtungen fur Schweifrauch (IS0 21904-3:2018) This European Standard was approved by CEN on 1 March 2018. references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre ortoany CENmember. 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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018CEN All rights of exploitation in any form and by any means reserved Ref. No. EN IS0 21904-3:2018: E worldwide for CEN national Members