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BS EN ISO 9463:2021

BS EN ISO 9463:2021

$102.76

Nuclear energy. Nuclear fuel technology. Determination of plutonium in nitric acid solutions by spectrophotometry

Published By Publication Date Number of Pages
BSI 2021 18
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This document specifies an analytical method by spectrophotometry, for determining the plutonium concentration in nitric acid solutions, with spectrophotometer implemented in hot cell and glove box allowing the analysis of high activity solutions. Commonly, the method is applicable, without interference, even in the presence of numerous cations, for a plutonium concentration higher than 0,5 mgĀ·lāˆ’1 in the original sample with a standard uncertainty, with coverage factor k = 1, less than 5 %.

The method is intended for process controls at the different steps of the process in a nuclear fuel reprocessing plant or in other nuclear facilities.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Chemical conditions
5.1 Stability of Pu(VI)
8 5.2 Rate of oxidation of Pu(IV) to Pu(VI)
5.3 Destruction of the excess oxidant
5.4 Comparison of Ce(IV) and Ag(II)
5.5 Molar extinction coefficient of Pu(VI)
9 6 Reagents
6.1 General
6.2 Common reagents for methods using silver oxide or cerium as oxidant
6.3 Reagents for method using silver oxide as oxidant
6.4 Reagents for method using Ce(IV) as oxidant
10 7 Apparatus
8 Test procedure
8.1 Preparation of the different solutions
8.1.1 Plutonium calibration solution
11 8.1.2 Sample solutions
12 8.2 Spectrophotometer setup
8.3 Measurements
8.3.1 Background measurement
13 8.3.2 Measurements on the calibration solution
8.3.3 Measurements on the sample solution
9 Expression of the result
9.1 Calculation of the concentration of plutonium in the sample
14 9.2 Reproducibility
9.3 Detection limit
10 Interferences
10.1 Anions
15 10.2 Cations
16 Annex A (informative) Preparation of silver (II) oxide (AgO)
17 Bibliography

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BS EN ISO 9463:2021
$102.76