BS EN ISO 21613:2017

What is ISO 21613‒ Determination of chlorine and fluorine about? 

ISO 21613 is an international standard that discusses aspects of nuclear energy.  

ISO 21613 describes a method for determining chlorine and fluorine in mixed (U, Pu) O2 powders and sintered pellets. It is applicable for the analysis of samples containing 5 μg.g−1 to 50 μg.g−1 of chlorine and 2 μg.g−1 to 50 μg.g−1of fluorine. 

ISO 21613 gives you specifications about the principle, reagents, equipment, operating procedures, expression of the results, stating the test reports for the determination of chlorine and fluorine. 

Who is ISO 21613‒ Determination of chlorine and fluorine for? 

ISO 21613 on the determination of chlorine and fluorine is useful for entities dealing with: 

• Nuclear fusion 
• Nuclear fission 
• Nuclear weapons 
• Electricity generation companies 
• Space exploration organizations 
• Nuclear medicine industries 
• Food treatments industries 

Why should you use ISO 21613‒ Determination of chlorine and fluorine? 

It is very important to improve the performance of a nuclear reactor through longer cycle lengths or improved purity of fuel utilization.  

ISO 21613 describes a method for determining the chlorine and fluorine concentrations in uranium dioxide and in sintered fuel pellets by pyrohydrolysis of samples, as they are corrosive elements and their presence in the above materials would cause corrosion of both structural and fuel elements.  

ISO 21613 describes the necessary conditions for pyrohydrolysis, and the modifications incorporated in the pyrohydrolysis apparatus, followed either by liquid ion-exchange chromatography or by selective electrode measurement of chlorine and fluorine ions, to estimate the quantity of fluorine and chlorine in the fuel pellets. 

What’s changed since the last update? 

BS EN ISO 21613:2017 supersedes BS ISO 21613:2015, which is withdrawn.