Uranium-Series Disequilibrium Studies in Bedrock for the Safety Case of Deep Geological Disposal of Spent Fuel

被引：0

作者：

Rasilainen, Kari ^{[1
]}

Suksi, Juhani

Pitkanen, Petteri ^{[1
]}

Marcos, Nuria

Carlsson, Torbjorn ^{[1
]}

机构：

[1] Tech Res Ctr Finland, VTT, FI-02044 Espoo, Finland

来源：

SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXXII | 2009年 / 1124卷

关键词：

U-234/U-238; DISEQUILIBRIUM; RELEASE; RECOIL; DECAY;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The possibility of glacial meltwaters disturbing the stable conditions around a nuclear waste repository can be studied by the USD method. The method is based on the perception of uranium isotope mobilisation relative to Th-230 occurring due to past meltwater intrusions. Uranium mobilisation occurs when redox potential increases. In shallow bedrock redox-potential may change under normal recharge. Similar changes probably occur when meltwater penetrates a deeper reducing aquifer. The role of redox conditions in U mobilisation appears dominant, as direct a recoil induced signals seem too weak to be observed for rock and water samples. The USD method can be used to provide support to the Finnish safety case in the area of complementary safety arguments and scenario formulations for transport calculations.

引用

页码：387 / 392

页数：6