THE EFFECT OF PRECIPITATION ON THE LONG-TERM RELEASE OF RADIONUCLIDES FROM USED FUEL

被引：11

作者：

GARISTO, NC ^{[1
]}

GARISTO, F ^{[1
]}

机构：

[1] ATOM ENERGY CANADA LTD,WHITESHELL NUCL RES ESTAB,RES CHEM BRANCH,PINAWA R0E 1L0,MANITOBA,CANADA

来源：

ANNALS OF NUCLEAR ENERGY | 1986年 / 13卷 / 11期

关键词：

NUCLEAR REACTORS - Spent Fuels - RADIOACTIVE MATERIALS - Transport Properties;

D O I：

10.1016/0306-4549(86)90015-0

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Solubility-limited dissolution models can be used to determine source terms for the safety assessment of used nuclear fuel disposal in geological vaults. These models usually assume that the solubility of the used-fuel matrix is constant. However, spatial inhomogeneities can lead to solubility gradients and, hence, cause precipitation downstream from a dissolving used-fuel matrix. In this paper, the effect of precipitation on the used-fuel dissolution rate has been investigated. Precipitation of uranium-containing solids has been found to enhance the dissolution rate of used fuel, especially at long times. The enhancement factor has been calculated for various vault conditions.

引用

页码：591 / 596

页数：6

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