Abstract: In order to scientifically measure and hierarchically evaluate the ability of safety risk management and control, and continuously improve and enhance the behavior as well,based on the theory of system safety structure, a SSRMC-CMM system for a complex giant system was established. The quantitative analysis and empowerment of index factors were carried out by DEMATEL and ANP, moreover the ternary interval numbers evaluation model was used to describe the decision making data, and calculate the maturity level of management and control capability. The results show that the ternary intervals quantitative analysis method combines with DEMATEL-ANP, which are applied to SSRMC-CMM, makes it possible to take consideration of the dependence and feedback effects of the index factors, and overcome the problems such as fuzzy quantitative description of evaluation index, which can effectively determine the main factors of improvement and enhancement of system's liability subjects.

Key words: system safety risk management and control(SSRMC), capability maturity model(CMM), analysis network process(ANP), ternary interval numbers, decision making trial and evaluation laboratory(DEMATEL)