Which measure is critical before allowing entry into a confined space?

Before allowing entry into a confined space, the completion of a risk assessment is critical. This measure is essential because it involves identifying potential hazards that could endanger the life and health of entrants, including oxygen deficiency, toxic atmospheres, and physical hazards such as moving machinery or uneven surfaces. A thorough risk assessment helps in formulating appropriate safety protocols and controls tailored to the specific conditions of the space, ensuring that entrants are aware of the risks and can take necessary precautions.

By assessing risks, teams can also determine the need for protective equipment, ventilation, and emergency response plans tailored for the specific circumstances of the confined space. Overall, the risk assessment serves as the foundational step in establishing a safe entry procedure and informs all subsequent safety measures that must be followed during the operation.