Authors:
N. Vajda Technical University Institute of Nuclear Techniques Budapest 1521 Budapest (Hungary)

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J. Larosa IAEA Laboratories Chemistry Division 2444 Seibersdorf (Austria)

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T. Pintér Paks Nuclear Power Plant P.O. Box 71 7031 Paks (Hungary)

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G. Keömley Technical University Institute of Nuclear Techniques Budapest 1521 Budapest (Hungary)

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D. Bódizs Technical University Institute of Nuclear Techniques Budapest 1521 Budapest (Hungary)

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Zs. Molnár Technical University Institute of Nuclear Techniques Budapest 1521 Budapest (Hungary)

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Abstract  

A simple and effective method has been developed for the determination of the transuranium isotopes in primary coolant samples of WWER-440 type reactors. Membrane filters containing undissolved particles from about one liter coolant were destroyed by mineral acids, then americium-curium isotopes and neptunium-plutonium isotopes were coprecipitated sequentially with NdF3 based on their different redox behavior. Alpha-spectra were determined by silicon semiconductor detectors connected to multichannel analyzers. Activity ratios measured in a reactor unit with a failed fuel element were compared with calculated values of the same type of reactor under similar conditions. Parameters of the defective fuel (burnup, original enrichment) could be estimated.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)