Identificação dos riscos na execução de perfuração direcional horizontal (método não destrutivo - M.N.D)

Abstract

The destructive conventional methodology "ditch the open", is being replaced by the methodology "non - destructive" with faster and less visual pollution execution, which has intensified in Brazil in recent years. This methodology HDD - Horizontal Directional Drilling or non-destructive method is a technique that was developed to realize the installation of underground pipes, without interfering with the external environment, which minimizes the impact to third parties. It is a “new” process and it does not have standardized performance standards in Brazil and are currently defined by equipment manufacturers, professional experts and technical operators. To identify the risks of the process, it was applied a few regulatory standards at this work that helped in raising the risks involved in directional drilling activity in relation to the equipment, working methods or to third parties not involved in the process, such as networks already installed underground (telephone, water mains, sewer, stormwater, optical fiber). We applied some methodologies such as FMEA tool, it was possible to identify the main risks of the procedure as surveying to register interference, trench shoring, that endangers the worker's life, beyond the noise analysis using the decibel meter equipment. A questionnaire template was designed to verify a situation of pain from the process, as well as other physical and ergonomic risks. Changes were suggested in the process, and it was found that the results obtained during the preparation of this work have a direct impact on the success of the use of horizontal directional drilling process.