BS IS0 21927-2:2018 Bsl Standards Publication Smoke and heat control systems Part 2: Specifications for natural smoke and heat exhaust ventilators bsi. BSIS021927-2:2018 BRITISH STANDARD Nationalforeword This British Standard is the UK implementation of IS0 21927-2:2018. It supersedes BS IS0 21927-2:2006+A1:2010, which is withdrawn. The UKparticipation inits preparation was entrustedto Technical CommitteeFSH/25,Smoke,heatcontrol systemsandcomponents. A list of organizations 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 responsiblefor its correctapplication. @TheBritishStandards Institution2018 PublishedbyBSIStandardsLimited2018 ISBN9780580993381 ICS13.220.20 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31December 2018. Amendments/corrigenda issued sincepublication Date Text affected BSISO21927-2:2018 INTERNATIONAL ISO STANDARD 21927-2 Second edition 2018-11-26 Smoke and heat control systems - Part 2: Specifications for natural smoke and heat exhaust ventilators Systemesdecontroledefuméeetdechaleur- Partie 2: Spécifications pour les dispositifs d'évacuation naturelle des fumées et de la chaleur Reference number ISO 21927-2:2018(E) ISO @IS0 2018