ISO INTERNATIONAL STANDARD 15080 First edition 2001-09-15 Nuclear facilities Ventilation penetrations for shielded enclosures InstallationsnucleairesTraversées deventilationpourenceintes blindées Reference number ISO 15080:2001(E) ISO @ISO 2001 Not for Resale ISO15080:2001(E） PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this area. AdobeisatrademarkofAdobeSystemsIncorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event ISO2001 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 member body in the country of the requester. ISO copyright office Casepostale56.CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland IsO2001-All rights reserved ted without licensefrom IHS Not for Resale ISO15080:2001(E) Contents Page Foreword. V Introduction. 1 Scope. 2 Normativereferences. Termsanddefinitions 4 Designofventilationpenetrations.. 4.1 General principles... 4.2 Conventionalventilationpenetrations 4.3 Castironhelixtechnique.. Annex A (normative)Specifications for the design of cast iron helixes.... AnnexB(informative)Rulesforthedefinitionofcast ironhelixes 17 AnnexC(informative)Examplesofdesignofconventionalpenetrations. 20 Bibliography. 22 ili Copyright Interi