The STRESA (Storage of Thermal REactor Safety Analysis Data) information system is a repository of thermal hydraulic experimental data (severe accident and pure thermal hydraulics) for nuclear power reactor safety analyses. Its goal is to disseminate documents and thermal hydraulic/severe accident experimental data from large in-house JRC scientific projects and from other European experiments. It supports the European NUGENIA network for Severe Accident data preservation and is a reference repository of EU experimental data. Its political relevance lays in the accomplishment of Euratom objectives to promote research and ensure the dissemination of technical information.