BSM Chapter 2 (SCBA)

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SCBA
Self Contained Breathing Apparatus

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TermDefinition
SCBA
Self Contained Breathing Apparatus
SCBA 6 major sub-assemblies:
1. Back Frame and Harness 2. Dual Path Pressure Reducer (PRA) 3. Snap Change Air cylinder and valve 4. Regulator (FMR) 5. Facepiece (AV3000 AT) 6. PASS device
2 PASS components
1. Remote Pressure Gauge 2. Back Frame mounted sensor module
Primary Pressure Reducer
125psi
Secondary Pressure Reducer
150psi
When does the Secondary Pressure Reducer and Vibralert kick in?
Cylinder pressure below 33%
SCBA waist strap rating
Class 1
Where is buddy breathing?
Right side of waist belt, in pouch
PASS Remote Pressure Gauge button colors
Red and Yellow
Cylinder Closing mechanism
Ratchet-style to avoid accidental closure
Buddy Breathing (EBSS) Capacity
User plus 1
Buddy Breathing (EBSS) share air routes:
1. EBSS to EBSS 2. EBSS to FMR Quick Connect
HUD purpose
Monitor air supply
Where is HUD?
Mounted on FMR across bottom of field of view