The IRSST (Canada) just published a new research report to contribute to confined space accident prevention by helping companies apply existing regulations. Researchers wanted to gain a better understanding of confined space risk management and identify issues based on the literature and field observations, and develop a confined space risk analysis and work categorization tool that meets the needs defined in the first stage of the project. This study provides support for designers, safety officers and rescuers in their respective efforts to improve the health and safe working conditions of people who must enter confined spaces. The tool can be used to design a confined space or to assess an existing one.