Discussion on the Application of Risk Matrix Method in Regional Nuclear and Radiation Risk Assessment

While nuclear technology benefits human beings, the ionizing radiation generated may also have adverse effects on human health and the environment. With the rapid development of social economy, nuclear energy and nuclear technology have been widely used, nuclear technology has become more and more close to people’s life, and nuclear and radiation safety has also attracted more and more attention from all walks of life. Therefore, while making effective use of nuclear technology, it is very necessary to do a good job of risk identification and safety management and control. Doing a good job in nuclear and radiation risk assessment is the premise of nuclear safety, nuclear security, and nuclear work. This paper is based on the risk matrix method proposed by the Australian and New Zealand standard “Risk Mangement, AS/NZS 4360:1999”, a qualitative risk assessment analysis method that can comprehensively assess the risk size of the possibility of hazard occurrence and the severity of injury. An attempt to carry out nuclear and radiation risk assessment in a city through the steps of risk source identification, risk possibility analysis, and risk consequence analysis. This paper briefly discusses the application of risk matrix method in regional nuclear and radiation risk assessment, and puts forward suggestions for the application of this method in regional nuclear and radiation risk assessment.