SCBA Flashcards
Confined space is defined as
Not designed for continuous human occupancy
Large enough so as a person can enter and work
Has limited means of entry or escape
Member runs out off air then
Should remove regulator from face piece
Notify officer
Immediately leave contaminated area
This member must be accompanied to safe area by another member wearing SCBA
Scott cylinders will have date of manufacture on the label by month and year ..the service life is how long and what should be done if a cylinder is discovered with a date greater
15 years Remove from service Bled down Tagged Return to MSU
Cylinders shall be hydrostatical tested every
5 years
Note this number will be found on the top of cylinder
When will the vibralert and the EOSTI actuate
When approximately 25 % of full cylinder remains
Note may not alarm at same time
All spare cylinders shall be checked when
Weekly on Mondays
When bleeding cylinders it should be fully depleted?
No avoid depleting cylinders
Air pressure in high pressure hose
Can be as much as 4500 PSI
What tools are necessary to tighten or replace the nylon O-ring
A 1/8 inch Allen wrench and 7/16 open end wrench
Pressure supplied to the UAC must not exceed
4500 psi
Can you use the UAC without its dust cover in place
No place oos
Rt-2 to MSU
The PRA Is mounted on the left side of the
Back fram if properly working it reduces operating pressure to
100 psi before. Entering regulators low pressure hose
If there is a malfunction of the PRA primary system the secondary system will reduce psi to
150 psi
Member will only know that vibralert has activated
Must notify officer and leave contaminated area with another SCBA member
If secondary system is activated in PRA then a member will
Have to leave area immediately and notify officer
Vibralert will sound
Primary and secondary failure in open position will activate relief valve in PRA
Rapidity discharge all air In Excess of 185 psi into atmosphere
When this occurs cylinder should be partially closed
Notify officer and immediately leave area
The manual shut off switch is mounted on top of the regulator assembly and it’s function is stop air flow into face piece prior to face piece removal. If the the shutoff fails to release then a member should
Turn purge valve 180 degrees to start air flow then notify officer leave area accompanied by another member
Purge valve for following emergency procedures
- Failure of regulator in closed position ( no air to face piece ) turn purge counter-clockwise
- Failure of regulator in open position( too much air flow) air flow can be controlled by opening the purge valve fully and partially closing cylinder
- To provide air flow if face piece becomes severely damaged
- Manual shut-off fails to releases for any reason
Snap lock
Located on right side of regulator
Lock facing down and purge up the the regulator inserts into face piece molded groove
Then rotate clockwise until the lock snaps into place
If you see two greens lights in your HUD you would know
You have a full cylinder
If you see one single green in your HUD you would know
Your cylinder is 3/4 full
You see a yellow light flashing slowly at one second you would know
Your cylinder is half full
If you see a red light at the far left flashing rapidly a ten times a second this means
Your cylinder is 1/4 full
When cylinder is turned on the HUD will
Illuminate all 5 lights for 20 seconds
Note .. Operation of all five lights must be verified every time SCBA use has begun and with every regular inspection
If you see a round light illuminated in far right of HUD this means
This is low battery indicator
Will light for 20 seconds then begin to flash slowly at once a second
