In professional life, many work accidents, injuries and occupational diseases are observed. As such incidents resulting from dangerous situations and behaviors may occur due to the mistakes of the employees, they can also be caused by not carrying out the maintenance and inspection of machines and equipments on time, or not developing on-site protection methods. In order to prevent all these risks, the situation must be assessed, the risks shall be defined and thus the accidents shall be foreseen by the experts. In the preliminary due diligence, the processes are examined in terms of their effectiveness, incompatibilities and corrective actions are determined, and the defined problems are reported to the senior management.