ISO INTERNATIONAL STANDARD 21940-23 First edition 2012-06-01 Mechanical vibration Rotor balancing Part 23: Enclosures and other protective measures for the measuring station of balancing machines Vibrationsmécaniques-Equilibragedes rotors- Partie 23: Enceintes et autres mesures de protection pour le postede mesurage des machinesa équilibrer Reference number ISO 21940-23:2012(E) LSO @ISO 2012 without license from IHS Not for Resale ISO21940-23:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IsO at the address below or IsO's memberbody in the country of therequester. ISO copyright office Case postale 56· CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2012 -All rights reserved No reproduction or networking permitted without license from IHS Not for Resale ISO21940-23:2012(E) Contents Page Foreword ..iv Introduction 1 Scope 2 Normativereferences 3 Terms and definitions. 4 Listof significant hazards. 4.1 General 4.2 Risk assessment. 4.3 Accessto balancing machine. 5 Safetyrequirementsandprotectivemeasures 3 5.1 General requirements. 5.2 Specific requirements 6 Verification of safety requirements and protective measures 5 7 Information foruse 9 7.1 General requirements. 9 7.2 Instructionhandbook. 9 7.3 Marking...... 9 AnnexA (normative)ClassCenclosureselection. 11 AnnexB(informative)Equipmentforimpacttests 19 AnnexC(informative)Examplesofprotectivedevices .20 Bibliography. 23 ili inse from IHS Not for Resale