PARAMETRIC STUDY OF LWR SPENT FUEL DISSOLUTION KINETICS

被引：33

作者：

GRAY, WJ ^{[1
]}

LEIDER, HR ^{[1
]}

STEWARD, SA ^{[1
]}

机构：

[1] LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 1992年 / 190卷

关键词：

D O I：

10.1016/0022-3115(92)90074-U

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spent fuel dissolution rates have been measured using a flowthrough system where the uranium concentrations remained well below solubility limits, thus allowing unambiguous reaction rates to be determined. The study was based on a statistically designed test matrix that covered four water chemistry variables: temperature (25 to 75-degrees-C), pH (8 to 10), carbonate/bicarbonate concentration (2 x 10(-4) M to 2 x 10(-2) M), and oxygen fugacity (O2 partial pressure 0.002 to 0.2 atm). Results obtained to date and reported here encompass the first three, all at 0.2 atm O2 partial pressure. The dissolution rate was found to be moderately dependent on temperature but only weakly dependent on pH and carbonate/bicarbonate concentration.

引用

页码：46 / 52

页数：7

共 25 条

[1] THERMODYNAMIC AND KINETIC CONSTRAINTS ON REACTION-RATES AMONG MINERALS AND AQUEOUS-SOLUTIONS .1. THEORETICAL CONSIDERATIONS [J].