This project focuses on the development of an IOT tool capable of managing the risks that can be generated within a confined space. Specifically, has been developed a system capable of carrying out a risk assessment and providing support in monitoring the work phases of a maintenance in the boiler room of "Palazzo Arsenale" of Turin. The project is characterized by a series of sensors able to evaluate the percentage of methane gas present in the air, a system able to collect data from various sensors, carry out a real-time risk assessment and send the data to an online database, and an android application for the constant monitoring of the confined space conditions, that provides the necessary information to create a safe and risk-free working environment..