BS ISO 7097-1:2025 PDF

Nuclear fuel technology. Determination of uranium in solutions, uranium hexafluoride and solids - Iron(II) reduction/potassium dichromate oxidation titrimetric method

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BS ISO 7097-1:2025

Nuclear fuel technology. Determination of uranium in solutions, uranium hexafluoride and solids - Iron(II) reduction/potassium dichromate oxidation titrimetric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Дата публикации:: 31 июля 2025 г.
ICS:: 27.120.30
SKU:: BS ISO 7097-1:2025

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Abstract

1 Scope This document describes an analytical method for the determination of uranium in samples from pure product materials such as U metal, UO 2 , UO 3 , uranyl nitrate hexahydrate, uranium hexafluoride and U 3 O 8 from the nuclear fuel cycle. This procedure is sufficiently accurate and precise to be used for nuclear materials accountability. This method can be used directly for the analysis of most uranium and uranium oxide nuclear reactor fuels, either irradiated or un-irradiated, and of uranium nitrate product solutions. Fission products equivalent to up to 10 % burn-up of heavy atoms do not interfere, and other elements which could cause interference are not normally present in sufficient quantity to affect the result significantly. The method recommends that an aliquot of sample is weighed and that a mass titration is used, in order to obtain improved precision and accuracy. This does not preclude the use of alternative techniques which could give equivalent performance. The use of automatic device(s) in the performance of some critical steps of the method has some advantages, mainly in the case of routine analysis.

BS ISO 7097-1:2025 PDF

Abstract

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