What should be tightened first when donning an SCBA harness?

When donning an SCBA (Self-Contained Breathing Apparatus) harness, the hip straps should be tightened first to ensure proper stability and support of the entire unit. Tightening the hip straps first secures the lower part of the harness, anchoring it to the wearer’s body, which helps in distributing the weight of the SCBA more effectively. This foundational support is essential because it centers the rig, allowing subsequent adjustments of the shoulder and chest straps to be more effective and comfortable.

By establishing a solid base with the hip straps, the wearer can then adjust the shoulder straps for a snug fit, which is crucial for mobility and ease of movement. Tightening the chest and back straps afterward further enhances the overall fit and comfort. This sequence ensures that the SCBA remains securely in place, promoting safety and readiness during firefighting or rescue operations.