The analysis of management of radioactive waste arisen from steam generator's dismantling from radiological and economical point of view

Abstract

As a result of the application of decontamination and dismantling techniques the radioactive waste of various form and activity content is generated. These hazardous materials are mostly in solid form (primary waste) but also in liquid form (secondary waste) which has to be fixed in a solid matrix. From this reason the complex analysis of the dismantling process has to take into account also this phenomenon. The paper analyses the expected radioactive waste arisen from the dismantling of steam generator used in Slovak nuclear power plant V1 in Jaslovské Bohunice from the perspective of waste streams and evaluates the expected exposure of the workers. Moreover, the basic cost analysis is presented in order to analyse the waste management scenarios also from economical point of view. The results show that the maximal collective effective dose is at the order of ones man-mSv which is below the respective exposure limit. In the case of the relative costs of waste management scenarios, the influence of the application of decontamination techniques is significant. The calculation methodology applied in the case of assessment of external exposure reflects the expected changes of the input data, for instance the amount, activity and nuclide composition of secondary waste.