ISO INTERNATIONAL STANDARD 14152 First edition 2001-12-15 Neutron radiation protection shielding - Design principles and considerations for the choice of appropriate materials Ecrans de protection neutronique - Principes de conception et élements pourle choixdemateriaux appropries Reference number ISO 14152:2001(E) ISO @ ISO 2001 ISO 14152:2001(E) PDF disclaimer 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 file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is atrademarkof Adobe Systems Incorporated. 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 Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.ch Printed in Switzerland ii @ISO2001-Allrights reserved ISO14152:2001(E) Contents Page Foreword Introduction Scope 2 Normative references.. 3 Terms and definitions 4 Basic rules and principles for the definition of neutron shielding. 5 Choice of radiological objectives and other design criteria. 6 Characterizationofneutronsources... 14 < Identification of constraints on placement and construction. 16 8 Choice of materials.. .18 9 Choiceofthecalculationmethod. 23 10 Choice of the final solution . 23 11 Experimental verification. Annex A (informative) Considerations on neutron sources ... Annex B (informative) Neutron sources and threshold reactions Annex C (informative) Characteristics of the most common neutron shielding materials Annex D(informative)Available computer codesfordetermination of neutron radiationprotection shielding.. ...58 Annex F (informative) Simplified neutron shielding calculation method, ...66 Bibliography 75 @ IS0 2001 - All rights reserved ili