Análise preliminar de risco no processo de solda oxiacetilênica em tubos de cobre na construção civil

Abstract

The air conditioning direct expansion systems type VRF (variable refrigerant flow) has been widely installed in new buildings and existing buildings reforms. These air conditioning systems are used long copper pipes and the union of these tubes is used the process of oxy-acetylene welding. The professional who carries out the welding of the pipes are exposed to risks of this process and the risks of the middle of the construction. The objective of this study is to analyze the risks involved in this activity and propose means of control thereof. The methodology used was the implementation of the APR method (Preliminary Risk Analysis) for this study. As a result of this work, a specific APR was created for a public work, carried out by a contractor hired by bidding, and identification of the risks involved in these activities. These risks were classified as trivial, tolerable, moderate, significant and intolerable. Based on this classification, we determined the level of action for the prevention of them and were also made recommendations to control these risks. It was found that the work there are several risks classified as significant and intolerable, requiring immediate action to reverse this situation. With this work it was possible to know the risks involved in the welding process of copper pipes and by applying the APR was possible to determine the level of action and the means to control these risks.