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Journal Articles

Equilibrium and Nonequilibrium Partition Coefficients of Volatile Fission Products between Liquid Sodium and the Gas Phase

Miyahara, Shinya; ; Watanabe, Tomoo; Haga, Kazuo; Himeno, Yoshiaki

Nuclear Technology, 97(2), p.177 - 185, 1992/02

https://doi.org/10.13182/NT92-A34614
 Times Cited Count：7 Percentile：57.42(Nuclear Science & Technology)

None

JAEA Reports

Experimental Study on Equilibrium Partition Coefficient of Volatile Fission Products between Liquid Sodium and the Gas Phase

Haga, Kazuo; ; Watanabe, Tomoo; ; Himeno, Yoshiaki

PNC TN9410 91-091, 13 Pages, 1991/01

PNC-TN9410-91-091.pdf:0.31MB

A series of tests has been conducted to obtain gas-liquid equilibrium partition coefficient Kd of volatile fission products such as cesium,iodine,and tellurium in sodium. In the test a sodium pool mixed with an FP simulant was heated by an electric furnace and the solvent of trapped vapors by filters was quantitatively analyzed. The results are,(1)Cs shows the highest Kd (20-100), (2)Kd of iodine scatters as wide as 0.02-0.5at 450$$^{circ}C$$and 0.3-0.8 at 650$$^{circ}C$$,(3)the Kd values of Cs and I agree well with the theoretical ones reported by Castleman et al., and (4)if a sodium-telluride which is hard to vaporize than pure Te is assumed, measured Kd of Te agrees with that theoretical.

JAEA Reports

A Study of sodium iodide solubility in sodium; Testin sodium temperature range in 500$$^{circ}$$C-800$$^{circ}$$C

*; *; *; *; *

PNC TN9410 89-034, 56 Pages, 1989/02

PNC-TN9410-89-034.pdf:1.08MB

The saturated solubility of NaI in sodium was measured to be used for the safety analysis of the Fast Breeder Reactors. A saturated preparation vessel, and test apparatus was designed and preparation procedures for the study was established. The test was conducted in the sodium temperature range of 500$$^{circ}$$C-800$$^{circ}$$C. From the resu1ts obtained the two empirical equations saturated solubility have been derived: [log$$_{10}$$S$$_{H}$$ = 8.557-3524/T(800$$^{circ}$$C-661.4$$^{circ}$$C)] [log$$_{10}$$S$$_{L}$$ = 9.751-4640/T(661.4$$^{circ}$$C-500$$^{circ}$$C)] [S$$_{H}$$, S$$_{L}$$ : saturated solubility (ppm)] [T : absolute temperature (K)] The above two equations of the saturated solubility represented test result with 1% errors. An intersection of the equations completely agreed with the melting point 661.4$$^{circ}$$C of NaI. The results with the present ones by M, A, Bredig et al. agrees.

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