BSENIS021904-2:2020 BSl Standards Publication Health and safety in welding and allied processes - Equipment for capture and separation of welding fume Part 2: Requirements for testing and marking of separation efficiency bsi. BSENIS021904-2:2020 BRITISH STANDARD National foreword ThisBritish Standard is theUK implementationof ENIS021904-2:2020 It is identical to IS0 21904-2:2020. It supersedes BS EN IS0 15012-1:2013 which is withdrawn. TheUKparticipationinitspreparationwas entrusted to Technical CommitteeWEE/4o, Health and safety in welding. A list oforganizations represented on this committee can be obtained on requestto its secretary. This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. @TheBritish Standards Institution2020 Published by BSI Standards Limited 2020 ISBN9780539026429 ICS13.100; 13.040.40;25.160.30 Compliancewith a British Standard cannot confer immunity from legalobligations. This British Standard was published under the authority of the Amendments/corrigendaissuedsincepublication Date Textaffected EUROPEANSTANDARD EN IS0 21904-2 NORME EUROPEENNE EUROPAISCHE NORM March 2020 ICS 25.160.01; 13.100 Supersedes EN IS0 15012-1:2013 English Version Health and safety in welding and allied processes Equipment for capture and separation of welding fume - Part 2: Requirements for testing and marking of separation efficiency (IS0 21904-2:2020) Hygiene et sécurite en soudage et techniques Arbeits-und Gesundheitsschutzbeim Schweifen connexes - Equipements de captage et de und bei verwandten Verfahren - Einrichtungen filtration des fumees - Partie 2: Exigences zum Erfassen und Abscheiden von Schweifrauch relatives aux essais et marquage de I'efficacite - Teil 2: Anforderungen an Prufung des de separation (IS0 21904-2:2020) Abscheidegrades (IS0 21904-2:2020) This European Standard was approved by CEN on 20 January 2020. this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards maybe obtained on application to the CEN-CENELEC 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 bytranslation under the responsibility ofa CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the officialversions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEEFURNORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2020CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21904-2:2020: E worldwide for CEN national Members