Qualification of a Corrosion-Protection Coating System for Transport and Storage Casks: Requirements and Results

In the FRG, the storage of spent fuel in transport/storage casks is a relatively expensive solution. Cost-reducing manufacturing methods are highly desirable, in order to retain competitiveness. The spent fuel is stored in these casks in dry condition under an inert gas atmosphere for several years. For this reason, the requirements made on a corrosion-protection coating for the inner cavity must be appropriate to the average level of operating loads. Expensive overlay-welding of stainless steel lining are to be replaced by cheaper technology.