ISO INTERNATIONAL STANDARD 16794 First edition 2003-02-01 Nuclear energy Determination of carbon compounds and fluorides in uranium hexafluoride infrared spectrometry Energie nucleaire - Détermination des produits carbonés et fluorures dans I'hexafluorure d'uranium par spectrometrie infrarouge Reference number ISO 16794:2003(E) ISO @ ISO 2003 by IHS under lic Not for Resale ISO16794:2003(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 accepts no liability in this area. Adobe is a trademark of 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 that a problem relating to it is found, please inform the Central Secretariat at the address given below ISO2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, 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.org Published in Switzerland ationalgazaiSandardizato @Iso2003-All rightsreserved ermittedwithoutlicense from IHS Not for Resale ISO 16794:2003(E) Contents Page Foreword .iv 1 Scope. 2 Principle 3 Apparatus...... 3.1 Infrared spectrometer... 3.2 Liquefaction and filling manifold 3.3 Infrared .cell........... 4 5 Operating procedure...... 5.1 Sample liquefaction ... 5.2 Rinsing connection networks and infrared cell. 5.3 5.4 Expressionofresults.. 6 Performance 6.1 Detection limit 3 6.2 Repeatability. 7 Test report. Copyrght International Organizaion for standardization rights reserved ili d by IHS under ed without license from IHS Not for Resale ISO16794:2003(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 non-governmental,inliaisonwithIsO,also take part in the work.Iso collaborates closely with the International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 16794 was prepared by Technical Committee ISO/TC 85, Nuclear energy, Subcommittee SC 5, Nuclear fuel technology. @ IsO 2003 - All rights reserved Copyright I ionalOrganizationfor Standardization INTERNATIONAL STANDARD ISO 16794:2003(E) Nuclear energy Determination of carbon compounds and fluorides in uranium hexafluoride infrared spectrometry 1 Scope This International Standard specifies a test method for the determination of hydrocarbons, chlorocarbons and partially or completely substituted halocarbons or halohydrocarbons contained as impurities in uranium hexafluoride (UF6) by infrared (IR) spectrometry. This method cannot be used for compounds giving IR rays with interference by UF6 (for example CF4) The test method is quantitative and applicable in the mole fraction from 0,000 1 % or 0,001 0 %, depending on the type of impurity, up to 0,100 %. The test method can also be used for the determination of hydrofluoric acid (HF) and several elements existing as fluorides; boron in BF3, silicon in SiF