Sistema de proteção contra descargas atmosféricas em paiol: avaliação de risco e projeto

Abstract

Atmospheric discharges correspond to a natural phenomenon that can negatively affect electrical energy transmission and distribution networks, as well as buildings and people close to the affected areas. Furthermore, this phenomenon can be highly dangerous when associated with explosives, which can be detonated by atmospheric discharge, causing damage and even deaths. Therefore, it is essential that these locations are prepared to deal with risks of this nature. NBR 5419/2015 establishes that places that store explosives, such as fireworks factories and PAIOL (powder deposits and other war instruments), must have an Atmospheric Discharge Protection System (ADPS). The ADPS aims to divert the electrical energy generated by lightning, directing it safely to the ground, without causing damage to the structure or people. In this context, the present work carries out a risk assessment to verify and validate the need to implement an ADPS in a PAIOL. The focus of the assessment is on identifying the conformity of a system that is already installed, considering the sensitivity of the stored content, which is explosives. Furthermore, it is proposed to carry out an ADPS project in order to optimize the effectiveness of the installation. With the results obtained, it is possible to provide security for the facilities, minimizing risks, thus ensuring adequate protection of the storage and its potential occupants. Finally, this study seeks to offer an approach that highlights the importance of risk assessment in decision-making related to the implementation of an ADPS.