중수로형 사용후핵연료 운반용기의 가상사고시 구조적 특성 = Structural Characteristics of PHWR Spent Fuel Shipping Cask in Hypothetical Accident Condition

다국어 초록 (Multilingual Abstract)

As the spent fuel shipping cask may cause serious effect on public and environment in case of leakage of its radioactive materials by accident, it is strictly treated in codes and standards to assure the structural safety during transportation. Not only under normal transportation but under hypothetical accident conditions, the cask is required to maintain the structural integrity. On the conceptual design purpose of PHWR type fuel shipping cask, the 9m free drop onto an unyielding horizontal surface and 1m free drop onto pin cases were evaluated as the model accidents in structural viewpoint in this study. To determine the position of drop impact orientation which causes maximum damage, comparative analyses on various positions were performed for the 9m drop, and an analysis assumed 1m drop onto a pin with horizontal position was done representatively. As a results, the structural integrity of the cask in hypothetical accident conditions is turned out to be maintained.