Volume 3 SELF CONTAINED BREATHING APPARATUS (SCBA) Flashcards
includes those apparatus in which the wearer carries their own air supply that is entirely independent of the outside atmosphere.
Self contained breathing apparatus
Compressed air is contained in a cylinder. High pressure air (up to _____ psi) is reduced down by the ____ and _____ stage regulator to a breathable pressure.
5,000
First and second stage
The LAFD uses the______ _____ SCBA
Sperian warrior
The scba This unit will NOT provide protection against _____, _____ or _____ which are skin absorbed (e.g. hydrocyanic acid).
Gasses, mists or vapors
The SCBA consists of 10 major component groups:
- 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 consists of a lightweight aluminum ____ _____ with an aluminum __ ____ that both swivels and hinges on the backplate.
Back plate
Hip plate
The backpack has ____ integrated carrying handles with ______ attachment points rated at ____ lbs.
Three
Carabiner
1000lbs
The cylinder is attached by a _____ ____ 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.
Stainless steel band
right hand side
Left hand side
The warrior harness is made of _____ straps. The pressure gauge, mounted on the _____ ______ strap, is integrated with the pass device. The gauge indicates the _______ pressure once the cylinder valve has been opened.
Kevlar straps
Right shoulder strap
Cylinder pressure
The _________ ________ hose is mounted over the left shoulder, and includes an ______/ ______ quick connector in line, which allows easy removal of the _____ ______ regulator from the SCBA (only to be used by _____ ______).
Intermediate pressure hose
Electrical/pneumatic
Second stage regulator
Rescue maintenance
Connection of the quick connect automatically connects the electronics required for the ____ _____ ____ (HUD).
Heads up display
The backpack is designed to transfer __% of the load to ____ for less shoulder fatigue. The backpack harness and cylinder weight approximately ____ lbs. The air cylinder is mounted low for unrestricted ____ and ____ movement.
60%
Hips
30.25 lbs
Head and neck
Battery pack located _____ lower side of harness use only __ Duracell “__” size batteries only. These batteries power all electronics except for the ____.
Right side
4
‘‘C’’
VAS
Amber LED’s located on ____ ___ and _____indicates battery status.
Pass device and backpack
A LED flash every __ seconds indicates good battery. The LED flashes every __seconds indicating adequate battery charge. No LED flashing indicates a ____ _____.
10 seconds
2 seconds
Dead battery
The RIC / Universal Air connection (UAC) is located on the ___ ____ side of backpack harness.
Left lower
When replacing the batteries You can remove the protective rubber cap using a _____, a large _____ _____ _________
Or male end of the ____ ____ _____
Coin
Flat blade screwdriver
Waist strap buckle
The air cylinder utilizes an ______ _______ ______ ______ construction overwrapped with a _____ ______ matrix and has a maximum working pressure of _____ psi.
Aluminum composite carbon fiber
Fiberglass epoxy
4500psi
The gauge is graduated in ____ psi increments ranging from __ to ____ psi. A cylinder that is full (bottle range ____-_____ psi) is identified on the gauge in ______.
1000
0 to 6000
4000-5000
Green
There are 2 sizes of air cylinders; ____ minute and ____ minute. When full, the cylinders contain ___ and __ cubic feet of air respectively and will provide air supply time of 45 minutes (65.6 cu. ft.) or 60 minutes (87 cu. ft.) at a user rate of __ liters per minute.
45 min and 60min
65.6 and 87
40
The air cylinder is hydrostatically tested every Once tested, the vendor places a decal on the cylinder identifying ____ and _____ of test.
5 years
Year and month
The department designator for newer bottles is “___” imprinted on the __ inch luminescent band.
‘’LFD’’
2’’
The first stage regulator contains:
A _____ ______.
Primary ___ ____ alarm activation and adjustment mechanisms
______ _______connection to the ____ _____ regulator and _____
alarm.
High pressure connections to the ____transducer, ______ ______gauge, and the _______ _____ connection.
Pressure reducer
Low air alarm
Intermediate pressure connection
Second stage regulator
Audible alarm
HUD
Remote pressure gauge
Universal air connection
The first stage regulator lowers cylinder air pressure to a nominal ___ psi. The relief valve activates to protect the system when the regulator pressure exceeds ___ to ___ psi.
115
200-225
The first stage regulator is connected to a low pressure “_____” whistle alarm. This alarm is located at the ____ _____ corner of the backpack, protected by an _____ and _____ resistant enclosure.
Warbling
Upper left corner
Impact and thermal
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
200
The HUD is mounted on the
Second stage regulator
The display consists of ___ ____ LEDs, representing ___, ___, ___, and ___.
Four green
Full, 3/4, 1/2, 1/4
As the air pressure in the cylinder decreases, the LEDs turn off ___ __ __time, thereby indicating the air pressure status.
One at a time
When the pressure drops below __% of cylinder capacity, the LED representing __ cylinder capacity starts to ____, and continues to flash for a short time (approximately __ seconds) before returning to continuously lit.
50%
1/2
Flash
20 secs
When the pressure drops to ___ (25%) of cylinder capacity, the last green LED turns ___ and begins to flash, thereby giving the user a ____ alarm of low pressure in addition to the _____ alarm located at he upper left of the backpack.
1/4
Red
Visual
Audible
The 1/4 LED will turn red and begin to flash between ____ and _____ psi.
1035 and 1215
When the pressure drops to __% of cylinder capacity, the red LED begins to flash noticeably _____ and continues flashing in this manner until air pressure drops below approximately ___ psi, at which time the display will ____ ____. No lighted LEDs represents ____ air pressure.
10%
Faster
200
Turn off
Zero
An external ___ LED, mounted on the front of the ____module, warns others of the user’s low air status by flashing at the same time the ___ LED is flashing inside the HUD module.
Red
HUD
1/4
The external red LED flashes noticeably faster when the pressure drops to ___% of the cylinder capacity. A ___ LED at the _____ _____ of the backpack performs the same functions.
10%
Red
Upper right
There are ____battery status indicators ____ LEDs on the Sperian Warrior SCBA.
HUD - on the ____ ____side
Backpack - on the ___ ____
____ device
Three
Amber
Bottom right
Upper right
Pass device
The HUD LED is located on the bottom right side. It will illuminate ____ continuously indicating ____ _____.
Amber
Low battery
When the SCBA is in storage (the cylinder valve is not opened), the amber LED on the Backpack and PASS device will flash ____ every ___ seconds to indicate a usable battery condition.
Once every 10 secs
The amber LED flashes every ___ seconds to indicate a ___ _____ condition, and will cease flashing altogether to indicate a _____ _____.
2 seconds
Low battery
Dead battery
The pressure demand second stage regulator is mounted on the facepiece by the Sperian ___ ____ system.
AIR KLIC
To prevent inadvertent airflow, the regulator will not operate until the _____ _____ on mechanism is activated or the _____ _____ button on the front of the regulator is pressed.
FIRST BREATH
MANUAL OVERRIDE
Pressing the _____ button can stop the flow of air. A large red knob on the ____ side of the regulator controls an ______ ______ valve. Turn this knob ________ provides a constant flow of air.
Shutoff
Right side
Adjustable bypass valve
Clockwise
The air pressure gauge and PASS device (_______) is routed over the _____ shoulder strap. It contains a ________ gauge for low light viewing and has an analog readout form empty “E” to full “F” using “ __, ___, ___, and _”.
Intellipass
Right shoulder
Luminescent gauge
1/4, 1/2, 3/4, F
PASS DEVICE
______ tone and ____ flashing LED lights indicate activation.
Ascending tone
Green
Depress the red “ALARM” button for __ to __ sec. to put into full alert. ___ slow depressions of the _____ “Reset” button on the side of the gauge will ____ ____ alarm. Test is indicated by a ______ tone.
1-2 secs
Two
Yellow
Shut off
Descending
After air is bled from the system ___additional depressions of the yellow reset button will ___ ____ the IntelliPASS system.
Two
Shut off
No manual activation of the PASS other then ___ _____ or ______ _____.
Red button
Opening cylinder
Lack of movement for __ seconds will activate the staged alarm with LED lights alternating ____ and ___.
20 sec
Green and red
Volume increases every __ seconds of inactivity with full alarm being reached at __ to __ seconds.
5 secs
30-45 secs
In full alarm alert the LED lights flash ___ and alarm tones alternate between ____ and ___ mounted alarm speakers. Minimum requirement is __ decibels. Warrior provides between ___ and ___ decibels in full alarm.
Red
Front and back
95 decibels
97 and 103 decibels
Intended for emergency air supply to a firefighter who has become lost, trapped or disoriented and has become low on air.
Buddy breathing system
The buddy breather system consists of __ inch _______ pressure hose with a “__’’ block male and female quick connect fitting. A storage pouch is located on the ____hip belt.
39’’ inch intermediate
Y
Left hip belt
Buddy breathing system:
When connected, the SCBA with _____ pressure will supply both breathers until the _____ psi bottle is exhausted, then switches to _____ psi bottle.
Higher pressure
Higher
Lower psi
The Warrior SCBA includes a ____ ________ Plus facepiece.
Crbn twenty twenty
The ____ ______ facepiece has a special wide lip sealing surface and ____ point silicone headstrap harness or _____ ______ harness.
Butyl rubber
5
Nomex headnet
FACEPIECE
The lens is treated with an _____ ______ coating on the outside surface of the lens, and a permanent ____ ____ coating on the inside of the lens.
Abrasion resistant
Anti fog
FACEPIECE
The nozzle houses a removable ____ cup, _______ _______, and _______ valve. The ___ _____ is threaded into the nozzle by a ratchet mechanism to prevent leakage and provide a secure mount for the _______ ______ regulator.
Nose cup,
Speaker diaphragm,
Exhalation valve
Air klic
Second stage regulator
The ____ ______ ______ attaches to the _____ side of the face piece and allows user to choose push-to-talk or hand free operation.
Voice amplification system
Right side
VOICE AMPLIFICATION SYSTEM (VAS)
One depression yields _____ __ _____ feature or two consecutive depressions yields _____ _____ continuous use. Depressing the button two additional times will ____ ___ ____
Push to talk
Hands free
Turn unit off
Vas:
____ LED visible from inside when in use. Blinking amber LED indicates ____ _____.
Red
Low battery
The VAS requires ___ ____ batteries
Three AAA
designed to provide protection from elevated temperatures to the ears, face and neck of the wearer.
FIREFIGHTING HOOD
At ____ and _____ fires, the firefighting hood may be worn in place or in conjunction with the helmet shroud for added protection.
Brush and grass
The firefighting hood shall be inspected _____ and ______ ______ ____
Daily and after each use
After a fire, wash the hood with ____ water and ____ _____ to remove normal accumulation of dirt and fire particles. Hang dry only and do not use _____
Warm water
Mild detergent
Bleach
don the unit by placing your LEFT arm through the LEFT shoulder strap and your right arm through the right shoulder strap. Grasp shoulder straps and pull away from bracket.
Apparatus Mounting Bracket Method
Place the cylinder on the ground with the cylinder valve away from user. Grasp the cylinder with both hands and lift overhead. Release grasp and let your arms slip through the shoulder harness. Adjust shoulder straps.
Over the Head Method
Place the cylinder on the ground with cylinder valve away from user. With hands palm down, grasp the right shoulder strap with right hand and left strap with left hand. Lift the unit to your back by turning your body as you lift, swinging one arm over your head as if donning a coat. Let your arms slip through the shoulder straps and adjust straps.
Double Shoulder Strap Method
Double Shoulder Strap Method:
For safety of personnel and the unit, avoid swinging in a
Wide arc
Cylinder Removal :
Close the cylinder valve by rotating the shutoff handwheel
Clockwise
Cylinder Removal
Remove the CGA handwheel from the cylinder valve by rotating the black handwheel
Counterclockwise
Buddy breathing procedures:
Member out of air removes buddy breathing hose located in left hip pouch. Donor member removes their buddy breathing hose and ____ it to member out of air. ___ ____ ____member completes connection of their buddy breathing hose to donor buddy breathing “Y” block.
Hands
Out of air
Member supplying donor air immediately ____ toward a ____ _____.
Leads
Safe area
The facepiece skirt and headstrap/headnet should be inspected for ____, ______ and _________. All parts, especially the ____and second stage regulator connection, should be cleaned and free of dirt and dust.
Tears, pliability
Deterioration
Lens
Facepeice inspection:
Examine the facepiece buckles for ____ at ____ attachment, proper function and ensure they are free of rust.
Tears
Skirt attachment
Check the facepiece for ____ and proper ______valve function. Exhalation should be _____, with no sticking of the exhalation valve.
Leaks
Exhalation
Smooth
Facepeice inspection
Check the rim for _____. Check VAS for damage and ensure proper operation. If ____LED light is flashing or not illuminating _____ _____.
Cracks
Red
Replace battery
Low and high pressure hoses: Check the hoses for ____, _____, ______, rust or corrosion. Check quick-connect couplings for proper function.
Holes cuts tears
Compressed air cylinder: Examine the exterior of the cylinder for _____ ____ _______, _________ and _____ damage. If the cylinder is damaged, evacuate the air pressure and send it in for testing.
Nicks, cuts gouges, delamination,
And heat
Check air pressure indicators on each side of the cylinder valve. The psi should read within ____lbs of each other.
500lbs
Backpack: Check for excessively _____ straps and pads, _____ or _____ buckles, defective stitching and cracks in the backpack _____
Frayed straps
Defective or coroded
Polymer
Second stage regulator: Check for ____ damage or ____ to housing or cover. Check knobs and buttons for proper operation. Test release buttons for positive _____ onto facepiece.
Heat damage, or cracks
Lock
Disinfect the facepiece in a warm suitable sanitizing solution, such as a “______ solution” (two [2] tablespoons of ______ ______per gallon of water), for ___to _____minutes. Rinse thoroughly with fresh warm water.
Hypochlorite
Chlorine bleach
2-3 mins
- PROBLEM: Restricted or interrupted airflow.
a. IMMEDIATELY exit to a _____ ______
b. Check that air cylinder valve is ____ _____
c. Open the ______ valve until the desired airflow is achieved.
d. Place out of service, tag (F-___) and send to _______ ______.
Safe area
Fully opened
Bypass valve
F-175
Rescue maintenance
PROBLEM: First-Breath-On failure.
a. IMMEDIATELY exit to a safe area.
b. Press _____ _____ button to start airflow.
c. Place out of service, tag (F-175) and send to Rescue Maintenance.
Manual override
. PROBLEM: Free flow of air or “blow-by” the face seal.
a. _____ forcefully.
b. Check ____ ____.
c. If free flow continues, ___ and ____ the bypass.
d. If problem still persists, IMMEDIATELY exit to a safe area.
e. Place out of service, tag (F-175) and send to Rescue Maintenance.
Exhale forcefully
Facepiece seal
Open and close bypass
PROBLEM: Relief valve operates (i.e. major air leak within system)
a. IMMEDIATELY exit to a safe area.
b. ____air cylinder valve, then ______ _____ airflow with cylinder valve.
c. Place out of service, tag (F-175) and send to Rescue Maintenance.
Close
Manually regulate
When full, the 45-minute air cylinder has _____ liters of air supply. The cylinder is rated 45 minutes based on a user rate of ___ liters per minute. During high demands, it is possible to use ___ liters per minute, reducing cylinder duration to ___ minutes total.
1800 liters
40 liters
100 liters
18 mins
The Rapid Intervention Company SCBA Kit consists of eight components:
- ___ bag with ____ and ____ handles.
- ___ minute air cylinder
- ____ _____ pressure reducer with ___feet of intermediate pressure hose
- _____ _____ regulator
- ______
- _____
- ___ feet drop bag line
- Flashlight with _____ _____
- Nylon bag with sling and carrying handles.
- 60 minute air cylinder
- First stage pressure reducer with 10 feet of intermediate pressure hose
- Second stage regulator
- Facepiece
- Pelican
- 150 feet drop bag line
- Flashlight with integrated holder
The nylon bag is constructed of heavy duty _____ nylon with _____ seams and straps to form a “____” reinforcement.
Ballistic
Kevlar
Sling
An intrinsically safe flashlight secured by an integrated flashlight holder may be used hands free or removed from the kit for use. Uses __ “__” size batteries
3 “c”
RIC kit inspection and
Maintenance:
Repairs by members are limited to replacement of _______ and the “__“_____ nipple connection located on the first stage regulator to air cylinder connection. The _____ ______Unit must perform all other repairs or adjustments.
Batteries and “o” ring
Rescue maintenance unit
