Respiratory Protection - Air Supplied Devices

Ease of mobility is a major advantage of the self contained tanks. The air from a SCBA is under positive pressure which is triggered by inhalation. The disadvantage of this method of respiratory protection is the level of training and proficiency required to become accustomed and agile with this equipment. Time is also a limiting factor as the tanks are limited in capacity and while a tank may have 60 minutes of air the actual time in the contaminated environment will need to be less than that to allow for entry and exit from the contaminated environment. Time for decontamination will need to be included for allotted safety margin.

Types of Air Supplied Devices

  1. SCBA (Self-Contained Breathing Apparatus)
  2. SAR (Supplied Air Respirator)

Advantages of Air Supplied Devices

  • Highest level of protection
  • Provides oxygen (air)
  • Positive pressure

Disadvantages of Air Supplied Devices

  • Training / proficiency
  • Work limited to tank capacity
  • Limited mobility with airline hoses
  • Cost
Back    Next

Back to MRT Table of Contents