The members are eight European organisations: Bundesamt für Strahlenschutz (BfS), Germany; Centre for Ecology & Hydrology (CEH), United Kingdom; Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Spain; Finnish Radiation and Nuclear Safety Authority (STUK), Finland; Institut de Radioprotection et de Sûreté Nucléaire (IRSN), France; Norwegian Radiation Protection Authority (NRPA), Norway; Strålsäkerhetsmyndigheten (SSM), Sweden; and Studiecentrum voor Kernenergie (SCK.CEN), Belgium.