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DISSOLUTION AND BURNUP DETERMINATION OF IRRADIATED U-Zr ALLOY NUCLEAR FUEL BY CHEMICAL METHODS  

Kim, Jung-Suk (Korea Atomic Energy Research Institute)
Jeon, Young-Shin (Korea Atomic Energy Research Institute)
Park, Soon-Dal (Korea Atomic Energy Research Institute)
Song, Byung-Chul (Korea Atomic Energy Research Institute)
Han, Sun-Ho (Korea Atomic Energy Research Institute)
Kim, Jong-Goo (Korea Atomic Energy Research Institute)
Publication Information
Nuclear Engineering and Technology / v.38, no.3, 2006 , pp. 301-310 More about this Journal
Abstract
Destructive methods were used for the burnup determination of U-Zr alloy nuclear fuel irradiated in the High-flux Advanced Neutron Application Reactor (HANARO) at KAERI. The dissolution rate of unirradiated U-Zr alloy fuel in $HNO_3$/HF mixtures was investigated for the experimental conditions of a different temperature, and initial concentrations of HF and $HNO_3$. The irradiated U-Zr alloy fuel specimen was dissolved in a mixed acid condition of 3 M HNO3 and 1 M HF at $90^{\circ}C$ for 8 hours under reflux. The total burnup was determined from measurement of the Nd isotope burnup monitors. The method includes U, Pu, $^{148}Nd,\;^P{145}Nd+^{146}Nd,\;^{144}Nd+^{143}Nd$ and total Nd isotopes determination by the isotope dilution mass spectrometric method (IDMS) using triple spikes $(^{233}U,\;^{242}Pu\;and\;^{150}Nd)$. The effective fission yield was calculated from the weighted fission yields averaged over the irradiation period. The results are compared with that obtained by the destructive -spectrometric measurement of the $^{137}Cs$ monitor.
Keywords
Burnup Measurement; U-Zr Alloy Fuel; Nd Isotope Monitor; IDMS;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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