Abstract
A method for performing a thermodynamic analysis of the high-temperature nuclear fuel using the ASTA computer program is substantiated. Calculations of the chemical composition and pressure of the gas phase of the ternary systems U-O-C and Pu-O-C are performed. The results obtained are compared with existing experimental data and theoretical studies performed by other authors. The results show that the entropy factor apparently plays an appreciable role in the thermodynamics of the systems studied. A comparative analysis of micropellets with uranium and plutonium fuel is performed. An estimate of the diffusion kinetics of the chemical interaction in micropellets is given as substantiation of the application of the methods of equilibrium thermodynamics for calculating the chemical and phase composition of the nuclear fuel.
Original language | English |
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Pages (from-to) | 36-44 |
Number of pages | 9 |
Journal | Atomnaya Energiya |
Volume | 98 |
Issue number | 1 |
State | Published - 2005 |