Technical Maturity of Shaft Hosting Facilities for the 65 t-Heavy Casks with Spent Fuel

Abstract

In a repository for spent fuel a shaft hoisting system is to be built for a transport unit (waste package and vehicle) with a total weight of 85 t. At present no suitable hoisting equipment for 85 metric tons is available anywhere in the world. To establish its technical maturity a preliminary design was carried out. More than 100 shaft hoisting facilities in operation were analyzed in a "reference study". The result is that nearly all main components of the shaft hoisting facility can be referred to facilities in operation. Only very few components with special requirements for a repository must be built up in a prototype scale and tested to establish its maturity.