THERMAL BEHAVIOUR OF RADWASTE – EXPERIMENTAL STUDIES

摘要

According to our experiences fire accidents are of highest significance for the operationalrnsafety of a repository for radioactive waste. In case of fires dose limits in the environment arernnot to be exceeded which is ensured by the design of the waste packages.rnVarious experiments were performed to target at the adjustment of theoretical models withinrnsafety and risk analysis of such installation. The investigations included the study of thernrelease mechanisms caused by combustion of radioactive waste and the melting ofrnradioactive metallic scrap as well as the research of the behaviour of an inactive waste drumrnin an open fire and the release ratio out of waste simulation material. The experimental designrnas well as a detailed description of set-ups and boundary conditions was already presented atrnthe WM 04. Therefore, the present paper will discuss the results and conclusions of thisrnproject which allow a more realistic look at the risks caused by fire accidents and theirrnconsequences for safety assessments.