INFO:

Confined spaces pose a higher risk of injury and death. Hazards in confined spaces can result in fire, explosion, unconsciousness, asphyxiation, engulfment, toxic exposure or drowning. Confined space incidents can happen suddenly, often without any warning that something is wrong. Employers must take the necessary steps to ensure worker safety around confined space entry.

Confined space entry series - Module 1: Roles & Responsibilities | Toolbox