[en] Based on a guideline study an organizational chart will be discussed of medical infrastructure in case of serious accidents occuring in nuclear power stations. The organizational chart provides for medical action taken on three different levels: 1. first aid stations, 2. basic hospitals, 3. spezialized hospitals. The first aid stations are charged with differentiating admitted persons on account of physical measured data as well as case history details and clinical data. The persons to be assessed clinically are grouped into the categories of 'light radiation accidents', 'medium radiation accidents', and 'serious radiation accidents'. These sorting criteria are used to transfer cases involving radiation accidents to collecting and evacuation stations, respectively, basic hospitals or spezialized hospitals. Symptoms of radiation accidents are discussed which can be included in the criteria of differentiation used to classify by light, medium, and serious radiation accidents. Besides, the report deals with measures accompanying the organization of functions in a first aid station as well as between the three levels indicated in the organizational chart. (orig.)