Before entering a hazardous environment, what should be checked on the SCBA?

Before entering a hazardous environment, it is critical to check the cylinder pressure and the functionality of all components of the SCBA. This is essential for ensuring that the SCBA will provide adequate air supply and protection while working in potentially dangerous situations. Cylinder pressure indicates how much breathable air remains, allowing the user to gauge how long they can operate before needing to exit or replace the tank. Additionally, checking the functionality of all components—including the mask, regulators, alarms, and harness—ensures that the equipment will perform as expected under duress. Each component plays a vital role in the overall safety of the user, making this comprehensive check paramount to maintaining safety standards in hazardous environments.