SCBA Flashcards
What does the SCBA not protect against?
Gases, mist, vapors that are skin absorbed such as hydrocyanic acid
What are the carabiner attachment points on the SBCA harness rated to?
1000 pounds
What percent of the weight of the SCBA it transferred to your hips?
How much does it weigh?
60 percent
Weighs 30.25 pounds
The SCBA harness is powered by what?
(4) Duracell C size batteries
What is the max working pressure of the SBCA cylinder?
4500 psi
What does the gauge on the SCBA cylinder read?
0-6000 in increments of 1000
Green area 4000-5000
How many cubic feet of air does the 45 minute bottle hold?
60 minute bottle?
45 minute- 65.6 cubic feet
60 minute- 87 cubic feet
The minute rating of the SCBA bottles are based on a user rate of how many LPM?
40 LPM
How often are the SCBA cylinders tested?
Hydrostatically tested every 5 years
The first stage regulator lowers the cylinder pressure to what?
115 psi
The relief valve of the first stage regulator activates at what pressure?
200-225 psi
When does the low pressure audible alarm activate in the SBCA?
When does it turn off?
At 1035-1215 psi or approximately 25%
Continues until pressure drops below 200 psi
What pressure does the second stage regulator deliver?
Just over atmospheric pressure
What are the 2 ways the second stage regulator is activated?
1- first breath
2- manual override button is pressed
How many LPM does the red bypass valve deliver?
130 LPM
How many LPM is the second stage regulator capable of delivering?
350 LPM
What are the (4) LED indicators on the HUD in the face piece?
Full, 3/4, 1/2, 1/4
When the cylinder capacity reaches less that 50%, how long will the 1/2 green LED flash before returning to continuously lit?
1/2 LED will flash for 20 seconds
When the SCBA capacity reaches 25%, what does the HUD display?
The 1/4 LED will turn red and flash
At 10% the light will flash continuously faster
At what PSI does the 1/4 LED turn off?
200 psi
On the PASS, how long do you hold the red button to go into “full alert?”
1-2 seconds
If there is no movement detected by the PASS for ___ , it will go into pre alarm.
20 seconds
When in “full alarm” what do the external LED lights do and how often does the sound increase in volume?
LED lights alternate between green/red
Sound increases every 5 seconds
When is full alarm reached in the PASS?
After 45 seconds