Square Arrayed Cask Design Charts for the Transportation of EK-10 Type Spent-Fuel Elements

Both the suitable design pitch at which t he spent-fuel elements are stowed in a square arrayed dry cask to be transported for a ce rtain t ime (depending on the distance between t he spent-fuel storage to the reprocessing p l ant and the mode of transpor tation) and the rea l cooling time-for which such spent-fuel elements are left cooled-are obtained as design charts incorporating all these variables taking into consideration the percentage burnup of the spent- fuel elements. Practical data are selected for a typical spent-fuel element (EK-10 type) of the ET-RR-1 reactor at Inshass. Based on detailed spent-fuel data such as the material content, operational history, cooling time for which the spent-fuel elements have been kept in storage, and the transportation time, the transport package design pitch charts are presented in this investi gation. The calculations were made through t he SFTC code, and t he results f or the design pitch charts of EK-10 type f uel elements are obtained ba sed on the design crit eria t hat the maximum a l lowed clad surface tempera ture should not exceed 92°C .