7. Risk Assessment Comparative Analysis by the Method “Level of Preventive Action” in Three Case Studies

The occupational risk assessment method adapted to building works called Level of Preventive Action (Lpac) has been implemented in three construction sites in three different countries: Brazil, Spain, and Portugal. The works have different characteristics, covering different construction phases. From all of them, technical data related to occupational health and safety were taken, and psychosociological data related to workers and their perception of risk in the work environment. The results were transferred to “MS-Excel” tables adapted to the characteristics of each of the construction projects. In the procedure, photographs were taken of the different work units evaluated, showing the work carried out, the health and safety teams, the workers, and the organization. The evaluation method can generate a wide spectrum of results from the large number of graphs, including those related to the total “Level of Preventive Action” and its corresponding parameters related to the construction system. The graphic results also determine the evaluation of the preventive action of the risks in the construction systems; results based on risk management techniques; including the personal perception of risky environments, the social behaviour of workers; and the evaluation of preventive action in work environments (absolute, documentary, constructive and social). Despite the great diversity of results, Lpac makes it possible to visually interpret the risk situation and decide so that the control of preventive action is the most effective.