1. Chalmers University of Technology, Division of Nuclear Engineering, SE-412 96 Gothenburg, Sweden
2. Technical University of Madrid, Applied Physics to Natural Resources Department, Ríos Rosas 21, 28003 Madrid, Spain
3. Ringhals AB, SE-432 85 Väröbacka, Sweden
4. Royal Institute of Technology, Albanova University Center, Division of Nuclear Power Safety, 100 44 Stockholm, Sweden