event tree
2.This paper embarked from theory and practice of modern safety science, studied and put forward the integrated system of risk monitor and safety management early-warning technique on chemical enterprise, through accident investigation and risk analysis of chemical enterprise, produced risk analyze method of chemical enterprise in this paper, which include Preliminary Hazard Analysis, Hazard and Operability Analysis, Safety Checklist Analysis, Event Tree Analysis, Failure Modes and Effects Analysis and Fault Tree Analysis.
3.Through analyzing risk factors which influence the safety of levee, event tree model is constituted. The main invalidation codes for dike are researched from the angle of engineering geology. Be based upon three main invalidation types: flood, seepage and slip of levee, the risk computation model are founded correspondingly.
4.Taking an offshore engineering project as an example, the paper introduces the steps of risk assessment in the process of hoisting offshore platform modular aboard in Bohai Sea and presents a series of practical schemes to delimit the systems, identify risk and it sources, set up event tree and establish risk assessment standards.
5.This article presents a method to solve the probability of event named probability tree and graph method. First, draw the probability tree and graph according to the sequence of the events, then mark the probability of every event on the graph, and then go back from the end point to the start point, at last the probability can be solved by using the multiplication formula and the addible attribute of the probability.
6.The underlying dangerous factors in the explosion elimination processing of LPG (liquified petroleum gas) tanks in a chemical plant in Xiangfan city, Hubei province, were systematically analyzed from the top tree event to the bottom tree event, and from the results to the causes by a fault tree taking a fire or explosion accident for the top.
