The inventors who study and develop the indispensable facilities to our activities are for the essential, of the engineers. Their large Scientific and technical expertises, their rigorous and effective methodologies are incontestable assets. One can regret however that: the abuse of the deductive logic in their formation and generally in the selection of intelligences, leads an excessive culture of the certainties in the minds to the detriment of a critical and innovating approach. To palliate this fact, the development of the research activities in the schools of engineers permitted to develop among the pupils the training of the doubt. The management of the risks requires acquire a frame of mind that accepts to take in account in its gait the uncertainty and the events dreaded; associated mainly at random in order to measure the impacts of it and to take the actions of mastery that must impose. In these works of research we propose a precious support so much to the level of the reflection that of the methods for all engineers and more globally all starting or experienced people, brought to undertake a gait of management of the risks in a very open panel of activities, and of the multi-dimensional analyses of the risks project management. This lesson is proposed to the engineers; notably to the directors of the strategy technical directors, financiers, chiefs of project, risk managers, to all members of an enterprise concerned by the management of the risks, in the Post-doctorate of the exact sciences, of management, . The chapters: 1 and 2: the summary and problematic; chapters 3 and 4: on the recall financing of the project and preliminary; chapter 5: the gait general management of the risks project; chapter 6: process of the risks project; chapter 7: typology of the generic dangers; chapter 8: examples of pictures of analysis of the risks; chapter 9: Application to the management of the risks of an industrial system; chapter 10 and 11: Multi-dimensional analyses of management of the risks; chapter 12: Findings and perspectives of the research works