GRS Annual Report 2008

GRS’s central fields of activity are reactor safety, repository safety as well as radiation protection. As far as these areas are concerned, GRS is the expert organisation of the Federal Government and advises it on all safety-relevant problems. GRS works on both reactor safety and repository research and in the field of analysing operational practice. When making safety-related assessments, the findings gained from both fields of work are combined. In doing so, the provision of interdisciplinary knowledge, advanced analysis methods and qualified data to assess the safety of technical facilities represents a particular challenge.
1.0 Introduction
2.0 Organisation and economic development
3.0 Reactor safety research
3.1 Calculation method for the determination of leak probabilities for complex structural geometries and load conditions
3.2 Uncertainty and sensitivity analysis of results of the post test calculation of a LSTF experiment with the code ATHLET
3.3 Influence of nuclear data evaluations on full scale reactor core calculations
4.0 Reactor safety analyses
4.1 Evaluation of recent findings on the integrity of pressurised components in nuclear power plants
4.2 Test and validation of tools for the simulation of boron dilution accidents
4.3 Controlling electrical voltage transients – international developments regarding the defence-in-depth concept
5.0 Final repository safety research
5.1 Transport modelling with non-linear sorption and stochastic flow
5.2 On the short- and long-term behaviour of bentonites as technical barriers material in final repositories for radioactive wastes
6.0 Radiation and environmental protection
6.1 Studies on the activation and decay storage of large components from the dismantling of nuclear power plants
6.2 Analyses on the nuclear criticality safety of a repository for spent nuclear fuels
6.3 Modelling of the atmospheric dispersion in case of accidents
6.4 EU project MICADO
6.5 The regulators perspective on research and development on the long-term safety of repositories for radioactive wastes
7.0 Projects and international programmes
7.1 Status report on knowledge management
7.2 International programmes
7.3 Development of the new »safety criteria for nuclear power plants
7.4 Contributions of physical plant protection to ensuring the safety of nuclear facilities
8.0 Human resources and legal affairs
9.0 Project management agency/authority support
10. Communication
11. Overview of ISTec activities
12. RISKAUDIT IRSN/GRS International (EEIG)
13. Co-operation agreements between GRS and foreign organisations