Determination of uranium,plutonium and selected fission products in the coolant of the KS-150 reactor |
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Authors: | M Štubňa J Ričány Š Rohár F Šebesta J Sedláček A Zeman |
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Institution: | (1) Nuclear Power Plants Research Institute, 91 931 Jaslovské Bohunice, (Czechoslovakia);(2) Department of Nuclear Chemistry, Technical University of Prague, Břehová 7, 115 19 Prague, (Czechoslovakia) |
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Abstract: | The method of monitoring of U, Pu and some fission products (103,106Ru,134,137Cs and141,144Ce) in gaseous CO2 coolant is described. The method is based on the retention of the radionuclides studied by membrane filters built in by-pass
of the burst-cartridge detection (BCD) system. The purpose of the present study was the determination of U, Pu in CO2 and the verification of the possibility of the indirect monitoring of U and Pu contents in the coolant, using the gamma-spectrometric
determination of selected fission products retained by the filter. For calibration of the proposed method after decomposition
of the filters, uranium was determined spectrophotometrically using Arsenazo III, plutonium was determined radiometrically
after its separation by extraction with 2-thenoyltrifluoracetone and the fission products were determined by gamma-spectrometry.
From the results obtained it follows that a correlation exists between the U and Pu content in the coolant and the activity
of certain fission products retained on the filter. |
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