The basic theory of probabilistic risk assessment (PRA) is introduced, and the feasibility of modeling and assessing the risk of engineering projects by PRA is discussed.

The risk assessment of bisphenol A in baby bottles and food packaging materials;

Predicting model behavior and the risk assessment for bacillus cereus in food;

Research progress on alien pest risk assessment methods;

DDTs residues in sediments from Hebei lakes and reservoirs and their risk evaluation;

Application of TMSF in risk evaluation for equipment;

To apply risk evaluation to strengthen the safety management of operative specimens;

Application of subjective grading method in the project risk appraisal of CNNOC 2000-1;

By the Jinglan Bridge in Liuzhou City, which is a multiple arch bridge with 5 spans,based on the theory calculation and the real bridge analysis,the risk appraisal and control measures of protective dismantlement for the bridge are studied.

This article through the analysis and research about the risk appraisal method,further strengthens to know and research on.

It is concluded that the RANSYS system can be used in the risk analysis for petrochemical equipment systems rapidly and conveniently.

The integrity management system includes data collection,risk analysis and integrity assessment,etc.

Internet technology,PHP & MySQL web database technology,and web server technology were used to develop a system for invasive pest risk analysis and forecast.