ISO INTERNATIONAL STANDARD 12499 First edition 1999-10-15 Industrial fans Mechanical safety of fans Guarding Ventilateurs industriels Sécurité mécanique des ventilateurs - Protecteurs ISO Reference number ISO 12499:1999(E) by IHS under lic Not for Resale ISO 12499:1999(E) Contents Page 1Scope 2 Normative references. .1 3 Definitions 4 Hazards from fans.. 4 5 Risk assessment. 5 6 Reduction of risk.. 7 Types of safeguard. .6 8 Guard construction 10Noise 11 11 Fans enclosed within units. 12 Safe working practices.. 13 Information for use 12 Annex A (informative) Bibliography . @ISO1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic International OrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland Copyright International Organization for Standardization from IH Not for Resale @ ISO ISO12499:1999(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through isO technical committees. Each member body interested in a subject for which a technical committee has been established has Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 12499 was prepared by Technical Committee ISO/TC 117 Industrial fans. Annex A of this International Standard is for information only. ili CopyrighInternationalOrganizationforStandardization Not for Resale