ISO INTERNATIONAL STANDARD 11665-8 Secondedition 2019-12 Measurement of radioactivity in the environment Air: radon-222 Part 8: Methodologies for initial and additional investigations in buildings Mesurage de la radioactivité dans I'environnement - Air: radon 222 Partie 8: Méthodologies appliquées aux investigations initiales et complémentaires dans les batiments Reference number ISO 11665-8:2019(E) ISO @ IS0 2019 IS0 11665-8:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved