The nuclear emergency exercise programme (NEEP) is a PC-based application intended for design and planning emergency preparedness and response (EP&R) exercises for a potential nuclear emergency in Korea. The application programme allows EP&R staff to create and edit exercise scenarios based on information customised for a specific nuclear power plant's emergency plans. NEEP includes the following features: (1) step-by-step guide to developing new exercise scenario according to emergency alarm level and potential accident type, (2) database of specific plant's field exercise scenarios that can be easily modified by users, (3) generating master scenario events list and messages of exercise participants and (4) allowing the quantitative evaluation of exercise participants from the view of exercise objectives and evaluator guides. NEEP also features tools for queries, reports and visualisation that can be used to create documentation during the scenario planning and exercise evaluation processes.

Recent accident at Fukushima nuclear power plant in Japan raised a great concern about the safety of nuclear power plants and the radiological consequences. About twenty percent of the operating power plants in the world are located in north-east Asia. Nuclear accident is not a domestic matter but an international matter especially among neighboring countries. The purpose of this study is to understand the general behavior of the radiological materials and the radiation dose in Korea resulted from a nuclear accident in neighboring countries of Korea. We selected a nuclear power plant unit respectively from China and Japan. We suppose a severe accident releasing radiological materials to the environment and performed a plume dispersion simulation using HYSPLIT4, considering the seasonal weather. The results show that the radiation exposure doses in the most pessimistic case could reach the nuclear emergency level in Korea, such as the indoor sheltering and the restriction on food consumption and drinking water for the public, which is based on the ICRP recommendation. The long-range plume dispersion model for the decision supportive system should be established and improved in near future.