TREATMENT OF DISUSED RADIOACTIVE SOURCES IN LOWER SAXONYGERMANY FOR STORAGE AND DISPOSAL

摘要

Spent and disused radioactive sources in the Federal Republic of Germany are collected forrninterim storage in the respective state collecting points (Landessammelstelle). As a disposal siternthe planned underground repository Grube Konrad is foreseen. The paper will describe thernpractice of the management of spent and disused radioactive sources in the state of LowerrnSaxony.rnThe paper will provide a list and a description of commonly-used radioactive sources in LowerrnSaxony. At the end of their useful life, the radioactive sources are recycled or treated for storagernin the state collecting point of Lower Saxony. The various options used for treating the sourcesrnand the practice for the supervision by the authority will be described. The pre-treated sourcesrnwill be super compacted or cemented in small containers with standardized dimensions andrnpacked in drums together with super compacted low active dry waste.rnThe storage facility for sources and institutional waste in Lower Saxony will be presented in thernpaper. Possible methods for conditioning the stored drums for a final disposal will be discussed.