Voltage security assessment for on-line risk index and its sensitivity;

Analysis on the applicability of water-supply risk indexes for water resources system during drought period;

According to the practice of control chart analysis (CCA) in the management of coal mine safety, it is showed that the application of control chart analysis in the statistical analysis of risk indexes can scientifically judge the developing trend of risk indexes, assess the improvement or degeneration of system and verify the effectiveness of safety measures.

In this paper a method for calculating risk of exceeding criterion(REC)in river was put forward on the basis of mathematical simulation analysis(MSA) for toxicants'leaking behaviour.