When donning SCBA, what should be done with all straps on the harness assembly and facepiece?

When donning a Self-Contained Breathing Apparatus (SCBA), it is crucial to fully extend all straps on the harness assembly and facepiece to ensure an effective and secure fit. This initial adjustment allows the user to put the SCBA on comfortably and gives them the opportunity to check that it integrates well with their protective gear.

Having the straps fully extended aids in the proper placement of the SCBA on the body, as it provides room to adjust the harness and facepiece once it is on. It is important that the facepiece sits snugly against the face to create an airtight seal, while the harness should be adjusted to distribute the weight comfortably.

Once the SCBA is in position, the individual can then tighten the straps to secure the apparatus in place. This sequence is crucial for ensuring the device operates effectively and safely, allowing for a proper seal and comfort during use.