Face pieces present special problems to individuals required to wear prescription lenses. Prescription spectacles are available to fit inside the face piece. The period over which the device will provide protection is limited by the amount of oxygen in the apparatus. Heavy work also reduces service time. SCBA devices are heavy and bulky.
Special training is required for their maintenance and safe use.
A SOP must be written for SCBA use. Air supply for work is not limited to the quantity the individual can carry and the devices are relatively lightweight. Use is limited to atmospheres from which the wearer can escape unharmed without the air of the respirator unless an auxiliary air supply is provided for escape. Movement of the wearer is restricted in by the hose. The wearer must return to a respirable atmosphere by retracing the route of entry.