Scba Flashcards
High pressure air (up to ________ psi) is reduced down by the first and second stage regulator to _____________.
5,000
a breathable pressure
This SCBA will NOT provide protection against.
gasses, mists or vapors which are skin absorbed (e.g. hydrocyanic acid).
The SCBA consists of __ major component groups: Which are?
10
- Backpack Harness and Air Cylinder
- First Stage Regulator
- Heads-up Display (HUD)
- Second Stage Regulator
- Air Pressure Gauge with PASS Device
- Buddy Breathing System with “Y” Block
- Facepiece
- Voice Amplification Systems (VAS)
- Firefighting Hood
- Escape Filter Cartridge
The backpack has __ integrated carrying handles with carabiner attachment points rated at _____.
3
1000psi
The cylinder is attached by a stainless steel band, and has a release latch on the ____ hand side (when looking at the cylinder with the valve pointing down), and an adjustment latch on the _____ hand side.
right
left
The backpack is designed to transfer ___% of the load to hips for less shoulder fatigue.
60%
The backpack harness and cylinder weight approximately ______ lbs.
30.25 lbs
Battery pack located right lower side of harness use only _____________ size batteries only.
4 Duracell “C”
A LED flash every __ seconds indicates good battery. The LED flashes every __ seconds indicating adequate battery charge.
10 seconds
2 seconds
There are 2 sizes of air cylinders; 45 minute and 60 minute. When full, the cylinders contain ____ and ___ cubic feet of air respectively
65.6
87
The first stage regulator lowers cylinder air pressure to a nominal ___ psi.
115 psi
The (first stage regulator) relief valve activates to protect the system when the regulator pressure exceeds ____ to ____ psi.
200 to 225psi
This low pressure SCBA audible alarm activates at ____ to ____. The audible alarm will continue to sound until the air pressure drops below ____ psi.
1035 to 1215
200psi
When the pressure drops below 50% of cylinder capacity, the (HUD) LED representing 1/2 cylinder capacity starts to flash, and continues to flash for a short time (approximately __ seconds) before returning to continuously lit.
20sec
When the pressure drops to __% of cylinder capacity, the red LED begins to flash noticeably faster and continues flashing in this manner until air pressure drops below approximately ___ psi, at which time the display will turn off.
10%
200psi
