All the companies, independent of the number of used or the degree of risk of its activities, are obliged to elaborate and to implement the PPRA, that has as objective the prevention and co control of the occupational exposition to the ambient risks, that is, the prevention and the control of the chemical, physical risks and biological gifts in the workstations. NR-9 details stages to be respected in the development of the program, the item that compose the stage of the recognition of the risks, the adopted limits of tolerance in the stage of evaluation and the concepts that involve the measures of control. The norm establishes, still, the obligatoriness of the existence of a cronograma that indicates clearly the stated periods for the development of the diverse stages and for the fulfilment of the established goals. An important aspect of this program is that it can inside be elaborated of more modern concepts of management and management, where the employer has enough autonomy stops with responsibility, to adopt a set of measures and action that considers necessary to guarantee the health and the physical integrity of the workers. Get more background information with materials from Robotics expert . The company fits to establish strategies and methodologies that will be used for the development of the actions, as well as the form of register, maintenance and spreading of the data generated in the development of the program. The actions of the PPRA must be developed in the scope of each establishment of the company, and its abrangncia and depth depend on the characteristics of the existing risks in the workstation and of the respective necessities of control. Finally, the NR-9 establishes general lines of direction and minimum parameters to be observed in the execution of the program; however, the same ones can be extended by means of collective bargaining of work. Looking for to guarantee the effective implementation of the PPRA, the norm it establishes that the company who adopts evaluation mechanisms that they allow to verify fulfilment of the stages, the actions and the foreseen goals.