Ruthenium release from fuel in accident conditions

被引：19

作者：

Brillant, G. ^{[1
]}

Marchetto, C. ^{[1
]}

Plumecocq, W. ^{[1
]}

机构：

[1] Inst Radioprotect & Surete Nucl, DPAM, SEMIC, LETR&LIMSI, F-13115 St Paul Les Durance, France

来源：

RADIOCHIMICA ACTA | 2010年 / 98卷 / 05期

关键词：

Severe accident; Fission product release; Ruthenium; FISSION-PRODUCT RELEASE; THERMODYNAMIC EVALUATION; MECHANISTIC CODE; OXYGEN DIFFUSION; URANIUM-DIOXIDE; BEHAVIOR; UO2; OXIDATION; SYSTEM; TRANSPORT;

D O I：

10.1524/ract.2010.1719

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

During a hypothetical nuclear power plant accident, fission products may be released from the fuel matrix and then reach the containment building and the environment. Ruthenium is a very hazardous fission product that can be highly and rapidly released in some accident scenarios. The impact of the atmosphere redox properties, temperature, and fuel burn-up on the ruthenium release is discussed. In order to improve the evaluation of the radiological impact by accident codes, a model of the ruthenium release from fuel is proposed using thermodynamic equilibrium calculations. In addition, a model of fuel oxidation under air is described. Finally, these models have been integrated in the ASTEC accident code and validation calculations have been performed on several experimental tests.

引用

页码：267 / 275

页数：9

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