Analytical review of risk triggers And identifying the risk triggers affecting on design phase in DB contracts

Nowadays, project management knowledge improvement and developing of management methods, decrease projects failure. Nevertheless many project's goals won't happen. One of the most important process affects project goals is project risk management. Identifying and managing of the risk triggers is an effective method of project risk management. Many years have passed since this concept was introduced but is so limited yet. This research endeavor to develop and make a better understanding on this concept as a main goal. Recognition and managing of this phenomenon help project risk management process. It makes the best decision for having the right time to adopt a strategy and ultimately it reduced the negative impact of risk taking on the project.The type of contract always play an effective role in creating risk. Therefore, in this study, it is selected to develop and analyse the concept of risk trigger phenomenon, in DB method which has many benefits and client's tendency and And in order to explain the status and importance of risk triggers, its relationship with a number of important risks has been analyzed qualitatively. For this purpose, through library studies, a table of common risks of these contracts and risk indicators from existing sources has been identified and compiled. Interviews with experts on risk, source and risk triggers relationships, in some important risk to study and validated results. Finally, a functional table of risk trigger is presented that is a great help to stakeholders in being prepared to respond better to risk triggers.