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Self Contained Breathing Apparatus

Self Contained Breathing Apparatus. (Positive Pressure) Open Circuit SCBA. OSHA 29 CFR 1910.134. 1998. What are the four hazardous respiratory environments?. 1. Heat 2. Smoke 3. Toxic gases (poisonous & superheated) 4. Oxygen deficiency <19.5%. Smoke. Byproduct of incomplete combustion.

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Self Contained Breathing Apparatus

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  1. Self Contained Breathing Apparatus (Positive Pressure) Open Circuit SCBA

  2. OSHA 29 CFR 1910.134 1998

  3. What are the four hazardous respiratory environments? • 1. Heat • 2. Smoke • 3. Toxic gases (poisonous & superheated) • 4. Oxygen deficiency <19.5%

  4. Smoke • Byproduct of incomplete combustion

  5. Toxic gases include: • Carbon Monoxide • Hydrogen Sulfide • Phosgene gases

  6. Air consists of: • 78% nitrogen • 21% oxygen • 1% other

  7. When do we use SCBA? • Oxygen deficient atmospheres / confined spaces. • Gas incidents. • Chemical incidents. • Salvage and clean-up operations. • True unknowns. • Whenever in doubt.

  8. S.C.B.A. can’t protect you from: • Gases absorbed through skin • Intense heat • Empty air supply • Radiation

  9. Stress can add to an improper fit.

  10. Psychological Problems • Hyperventilation

  11. Physiological problems • Claustrophobia

  12. How much time do you have with the SCBA? • It’s never enough, but you have about 30 minutes if: • You’re in good cardiovascular health. • Not stressed out. • Good fit on mask

  13. Factors that affect fit of mask • Weight gain/loss • Facial hair • Shape of face • Good seal

  14. Safety Check • Tank pressure • Low air alarm • High pressure line • Regulator • Mainline valve • Emergency by-pass valve

  15. Safety Check cont. • Low pressure hose • Damaged lens • Facepiece straps • Facepiece seal

  16. Sounds easy, right?

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