Dependable ionizing radiation protection model and risk identification analysis i* based

For the sake of stabilization and development of ecological economy and society, we study dependable model for ionizing radiation protection system and propose an early requirement model for ionizing radiation protection on the basis of i* and its prototype. In order to achieve dependability in the system, we employ technology such as modeling through misusing cases and strategy dependency relationship and strategy reasoning relationship to control modeling parameter. The paper stresses the process of modeling for strategy dependency relationship and strategy reasoning relationship and identification and evaluation of risk. We also establish strategy dependency and strategy reasoning models and get risks and corresponding measures list. The practice shows that this method gets high efficiency and high dependability so it is suitable for study on ionizing radioactive protection model. (authors)