Atmosphere-Supplying Respirators
Self-Contained Breathing Apparatus (SCBA)
The SCBA is used for entry and escape from atmospheres that are considered immediately dangerous to life and health (IDLH) or oxygen deficient.
SCBAs have a full facepiece with an Assigned Protection Factor (APF) of 10,000. Fit testing is required.
They use their own air tank. SCBAs have a full facepiece with an Assigned Protection Factor (APF) of 10,000. Fit testing is required.
Key Features
- Provides very pure, dry compressed air to full facepiece mask via a hose.
- Air is exhaled to the environment.
- By law, this type of respirator must be worn whenever entering environments immediately dangerous to life and health (IDLH) or when information is inadequate to rule out IDLH atmosphere.
Advantages
- Provides highest level of respiratory protection.
- Several different types are available depending on need.
- Offers improved mobility over Supplied-Air Respirators.
- Provides both respiratory and eye protection.
Disadvantages
- They are heavy to wear.
- Limited oxygen supply limits the duration of use.
- Fit testing is required.
- Communication can be difficult.
Knowledge Check Choose the best answer for the question.
2-7. Which type of respirator is used for entry and escape from atmospheres that are considered immediately dangerous to life and health (IDLH) or oxygen deficient?
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