Speaker
Dr
Vladimir Chistyakov
(Russia, Rosatom, JSC"State Scientific Center-Research Institute of Atomic Reactors", Radiochemical Unit)
Description
Technique for determining plutonium total mass fraction in Pu preparations and uranium-plutonium mixtures, including MOX fuel for fast reactors by the automatic coulometric titration is developed and successfully used in RIAR for a long time. The paper presents the optimization results of sample preparation and titration conditions on the facility, developed in RIAR to minimize the total analysis error. Use of standard (CO) potassium dichromate specimen without СО PuO2 for facility calibration during analysis result verification is experimentally proved. Metrological certification of the developed technique version indicated that total analysis error of the Pu mass fraction in the specimen can be less than 0.05%. First, the developed precise technique for plutonium determination was applied during the certification of State PuO2 standard specimen of the first class for its plutonium mass fraction content.
Primary author
Dr
Vladimir Chistyakov
(Russia, Rosatom, JSC"State Scientific Center-Research Institute of Atomic Reactors", Radiochemical Unit)
