RESIK is obliged to the notion of planning for that, which can’t be planned for. The project is meant to be a contribution to the building and assuring of hospital functionality in times of crisis. One of its tasks is to lay the foundations for temporary decentralisation of medical and caring structures in case of emergency. In this context the hospital is regarded as a node in a network of miscellaneous public health and security organizations. For the model region Krefeld RESIK analyses the complex structure, identifies existing vulnerabilities related to crisis and develops strategies to enhance the resilience of hospitals as central parts of public health infrastructure.