What is the required procedure before entering any confined space during a rescue?

The required procedure before entering any confined space during a rescue is to conduct air monitoring. This step is critical because confined spaces can often contain hazardous atmospheres due to the potential presence of toxic gases, lack of oxygen, or other dangerous conditions that could pose immediate risks to the rescuer's health and safety. By performing air monitoring, responders can assess the quality of the air within the confined space and determine if it is safe to enter. This monitoring typically involves using specialized equipment to check for the concentration of various gases and the overall oxygen level.

Conducting air monitoring not only helps to ensure the safety of the rescue personnel but also informs them of the environment they will be entering. It serves as a fundamental step in planning a safe rescue operation, allowing teams to implement necessary precautions such as ventilation, personal protective equipment (PPE), and potentially the need for additional rescue support or equipment based on the readings obtained.