This course aims to Train nuclear safety experts who are highly likely to participate as reviewers in States with nuclear installations(e.g. nuclear power reactors, research reactors, fuel cycle facilities, etc.) The course will be highly interactive. Participants will receive reference material for a simulated IRRS mission in advance of the course and will be asked to review it as if they were preparing for a real IRRS mission. During the course, The participants will take part in practical sessions to simulate the conduct of an IRRS mission, including interviews and report writing