BS EN IS0 21904-1:2020 Incorporating corrigendum June 2021 BSl Standards Publication Health and safety in welding and allied processes Equipment for capture and separation of welding fume Part 1: General requirements bsi. BSENISO21904-1:2020 BRITISH STANDARD National foreword This British Standard is the UK implementation of ENIS021904-1:2020.Itis identicaltoIS021904-1:2020.It supersedes BSENIS015012-4:2016,which is withdrawn. TheUK participation inits preparationwas entrusted to Technical Committee WEE/40, Health and safety in welding. A list oforganizations represented on this committee can be obtained on request to its committee manager. Contractual and legal considerations This publication has been prepared in good faith, however no representation,warranty,assurance or undertaking (express or implied) is or will bemade, and no responsibility or liability is or will be reasonableness of thispublication.All and any suchresponsibility and liability is expresslydisclaimed to the full extent permitted bythelaw. This publication is provided as is,and isto beused at the recipient's own risk. The recipient is advised to consider seeking professional guidance with respecttoits use ofthispublication. This publication is not intended to constitute a contract. Users are responsiblefor its correctapplication. This publication has been prepared under a mandate given to the European Standards Organizations by the European Commission and the European Free Trade Association and is intended to support essential requirements ofthe EU legislation detailed in the European foreword. AnnexZA/zZdescribeshowthepublicationrelatestothelegislation. For the Great Britain market (England, Scotland and Wales),if the UK Government has designated this publication for conformity with UkCA marking legislationand has notamended theessentialrequirements ofthatlegislation,AnnexZA/zZandanyreferencestoEUlawin the publication should be read in accordance with the designation as applyingto UKlegislation in the same wayas toEUlaw.Further information on designated standards can befound at www.bsigroup.com/standardsandregulation. For the Northern Ireland market, UK law will continue to implement relevantEU law subjecttoperiodic confirmation.ReferencestoEU legislationaretherefore still valid. More information on legislation can befound at www.govuk @TheBritishStandards Institution2021 PublishedbyBSI Standards Limited 2021 ICS13.040.40;13.100;25.160.01;25.160.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the BRITISH STANDARD BSENIS021904-1:2020 Amendments/corrigendaissuedsincepublication Date Textaffected 30 June 2021 Additionof AnnexZA