It elaborates the installation of bridges,arch bridge dismantling technology and protective measures and gets the conclusion that this bridge achieves the expected safety goal,which accumulates construction experience for highway overpass railway bridge.

A set of framework on nuclear safety is established from basic concept of safety,and a integrated evaluation on safety level of evolutional second generation nuclear power plant is conducted in conjunction with history of nuclear power and nuclear safety,deterministic safety approach,probabilistic safety approach,safety goal,etc.

Analysis on security objectives of business process elements;

Corporation safety aim management and effectiveness evaluation;