ISO 26062:2010 核技術—核燃料—誘導結合プラズマ質量分析によるウランおよびプルトニウムベースの材料中の元素不純物の測定手順 | ページ 2

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 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards 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 26062 was prepared by Technical Committee ISO/TC 85, Nuclear energy, Subcommittee SC 5, Nuclear fuel cycle.

Introduction

The technique presented in this International Standard is capable of being used to perform quantitative measurements of elements with the specific exceptions of H, He, C, N, O, F, Cl, Br, and the noble gases. The measurement of other elements such as Si, P, S, K and I will require specialized sample introduction options, specialized solutions, mass analysers or in-line systems for the measurement.

This International Standard is presented in general terms for actinide samples because of the complexity and variation of the ICP-MS technique and its sample introduction accessories. Sufficient and appropriate method development should be undertaken to ensure that the procedure used for the determination of impurities in uranium and plutonium matrices is validated.

It is assumed that the user of this International Standard has a basic understanding of standard sample control, chemical extraction techniques and operation of ICP-MS instrumentation. Blank control is critical when undertaking ICP-MS analysis. Assessment of reagents and standards may be required when undertaking ultra trace analysis.

1 Scope

This International Standard specifies a procedure for the determination of trace impurities in uranium- or plutonium-based, or mixed uranium- and plutonium-based, materials by inductively coupled plasma mass spectrometry (ICP-MS). It provides both guidelines and specific options for the determination of an element or group of elements.

It is applicable to solutions such as uranyl or plutonium nitrate, solids such as the oxides and to mixed actinide materials such as unirradiated mixed oxide material in either solid or dissolved forms. It is not directly suitable for the analysis of uranium or plutonium matrices containing significant quantities of other elements such as uranium–gadolinium mixtures. It may nevertheless form the basis of a process for analysing this type of matrix, provided that the impact of the gadolinium component is ascertained.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

Bibliography