Notes from Reading Flashcards
What is the range for dry chemical extinguisher?
- 15-20’
- liquids: 6-8’
- acids: 2-3’
What is the rating of the dry chem extinguisher used on Lafd?
- 20B-C
- above means capable of extinguishing a 20 square foot deep layer class B fire, and is safe for use on fires involving energized electrical equipment
How many pounds of sodium bicarbonate in dry chem extinguisher used on Lafd?
- 20 pounds
What is the pressure setting on dry chem extinguisher used on Lafd?
- 165 psi
* most effective 125-175 psi
Dry chem cone fan degree?
60 degrees
Junior System Facts
- not over 3-4 sprinklers
- light hazard occupancies
- connected to service water supply with 1” brass pipe and electric flow alarm
- No FD connection or drain valve
- 3/4”-1” copper tubing
- 1/4”-3/8” sprinklers
- sprinklers discharge 1/2 amount water as standard 1” sprinkler
- identified with pintle extending beyond center of the deflector.
For every 2 pounds under recommended tire pressure, you lose _ in fuel economy.
- 1%
What is the most important fuel saver?
- Driver attitude (60%)
What is net pressure?
- pressure actually produced by the pump.
How do you find net pressure when being supplied by a hydrant?
- Pump discharge pressure - incoming hydrant pressure
How do you find net pressure when drafting?
- Pump discharge pressure + suction pressure + friction loss in hose
When drafting strainer should be _ below water surface and in at least depths of _ of water.
- 2’ (prevent “eddys”)
- 4’
AFFF proportion
- 6% concentrate to 94% water OR 1 gallon of concentrate to 16 gallons of water
Chainsaw brake engages _ second
- 1/10
For chainsaw inspect chain sprocket for grooves exceeding _ in depth.
- 1/16”
During extensive operations, how often should chain tension be checked?
- Every 5 min
Who is contacted when overhaul piles are left on public ways?
- Street maintenane
Phenyl Magnesium Bromide
Info:
will explode when in contact with water.
Order in which straps of KED are put on patient?
- Chest, Legs, Head
All resources shall maintain a minimum of _ size(s) of each BVM.
- 1
- However each ALS resource shall have following:
- 5 Adult
- 3 Peds
- 2 Infant
How long can a head of a snake after being cut off, still inject venom?
- 1 hour
How far down do you bury a head of a snake?
- 24” (2 feet)
Which extinguisher on apparatus best immobilizes a snake?
- CO2
Two ways single station smoke detectors detect products of combustion?
- photoelectric: beam of light *
- Ionization: radioactive material/electric current
- best
Rotary Saw spark plug gap?
- .020” (only one mentioned in updated TB)
Name of identification/MSDS sheet for trains?
- waybill
* found at caboose of train or with conductor.
To notify a train to stop how far out in either direction do you put flares on track?
- 1 1/2 miles in both directions
A fully sprinklered building must have sprinklers installed above and beneath any one of these?
- mezzanine
* 33 1/2% of floor = another story also 7’ in height.
If questions in regards to mezzanines, which section in FPB should be contacted?
- North industrial and Commercial Section
How much does one section of 4” hose weigh?
- 49 pounds
Constant for calculating 200’ high rise hose through standpipe?
- 170 psi (145+25) + 5 psi/floor
Radiation, least to most dangerous
- Alpha (paper), Beta (thick book), Gamma (lead wall)
“Alemite” is another word for?
- zerk fittings
Paint may be added to apparatus only to _ when needed to protect surfaces from _.
- bare metal
- corrosion
When is undercarriage paint inspected on apparatus?
- Annual pump test
Bimonthly inspections scheduled during first _ weeks of _ months by Battalion.
- 2
- Even
What type of inspection is done every 4 months?
- Undercarriage inspection
Biennial Inspection
- AKA: Annual Inspection
- odd battalions/odd years
even battalions/even years
Are leaks considered significant to S&M?
- No, unless there is measurable fluid loss.
The 972 daily pre trip inspection checklist is separated into how many sections?
- 6 (general overview, engine compartment, cab checks, brakes, lights, walk around inspection)
What is the speed limit in the MTA yard where undercarriage cleaning can be done?
- 8 mph
Three most common types of evacuation.
- Shelter in place, voluntary evacuation, mandatory evacuation
Emergency broadcast system can be activate through who?
- Los Angeles County Sheriff’s Department
When EOC activated the _ and _ automatically are notified. Mayor will go to _ and take control. If mayor absent, then _ takes over.
- Mayor
- Officials
- EOC
- Chief of Police
What does HERT stand for?
- Hospital Emergency Response Team
The only two approved and accepted forms of painful stimulus.
- Inter-digital Pressure
- Slight pressure to nail bed
Heavy apparatus have _ total batteries. Of these _ are used to start the rig.
- 6
- 5
- The one battery not used to start rig is found right rear side and is used to keep 800 MHz Radio, UHF radio, VHF radio, and MDT powered at all times.
The radio “cut off” switch must be turned OFF to prevent drainage of batteries when?
- Apparatus out of service longer than 10 hours
- No plug in for on board battery charger
Methanol Characteristics
- clear, odorless (faint alcohol odor), volatile, flammable
- mixes with water
- 6% in air = explosive
- greater than 36% air = to rich to ignite
- flammable when 21% methanol mixed in with water by volume (5 parts water/1 part methanol)
- low flame luminosity*( no soot produced when burning)
According to TB methanol’s greatest danger is to a person’s _.
- Eyes (atrophy optic nerve and retina)
Most effective extinguishing agents against Methonol.
- Dry chem (ABC purple K Sodium Bicarb)
- Halon
- AFFF/ATC (700 gallon supply at S&M)
- Water (remember 5:1 ratio)
AED to be taken into all EMS runs except?
- Traumas
- OB
AED to be used on patients more than _ pounds.
- 90 pounds (45 Kilograms)
New and repaired hose shall be tested within _ of receiving.
- 24 hours
When damp and dirty which hose shall be changed within 24 hours?
- handlines (1”, 1 1/2”, 1 3/4”, 2 1/2”)
Fabric jacketed SUPPLY LINES (bypasses/soft suctions) shall be changed _ or more frequently when damp or dirty.
- weekly
What is the service life of hose?
- 10 years
Hose replacement department contact?
- Equipment Engineering Unit at S&M
For heavily soiled hose use _% solution of concentrated liquid soap.
- 5-10%
Low voltage warning system actuates at what voltage?
- Below 12.2 Volts
Maximum length of hose to be tested?
- 300’
* attatch to OFFSIDE of apparatus
Start at _ to remove air from hose line and check for leaks at couplings when testing hose. Once done, raise pressure _ per second until test pressure reached. Test should last _ min.
- 45 psi
- 15 psi
- 5
- test to be terminated if: leaks or hose bursts
What are next steps after 5 min testing is complete?
- Shutdown procedures : throttle (idle), gate, pump
- let engine idle for 5 min before shutting down
What documentation needs to be done after hose testing complete?
- F-2
- F-129
All _ hose and _ hose shall be tested annually by _ during Annual Pump Test.
- hard suction
- 2 1/2” high pressure HR
- Test Pit Engineer
Test Pressures to remember according to TB.
- 250 psi: 4” Hose
- 400 psi: All handlines (1”, 1 1/2”, 1 3/4”, 2 1/2”)
- 300 psi: All other hose not listed above or done by Test pit engineer at annual pump test.
Butane characteristics
- 2x heavier than air (test question on Capt exam) *
- Colorless, odorless
- Explosive range: 1.8%-8.4% in air
Desired Brush operational objective is to anchor, _, pinch in coordination with _ support and _ protection.
- Flank
- Helicopter
- Structure
Two methods of deploying hose at brush fire?
- Simple
- Progressive
The Seek Reveal Firepro Tic will shut off automatically after _ min.
- 15 min (manufacturer set up- can be changed if desired)
With Tic fully charged how many hours of scanning time can you get out of it?
- 4 hours
When testing hose, what parameter is set as “test area” in all directions of hose lay for safety?
- 15’
PPE shall be cleaned in an extractor a minimum of how many times a year?
- Twice
While washing PPE after a fire, the company shall be be down _ with permission from Metro.
- CAV
Companies strongly encouraged to launder their PPE in the _ hours due to daytime activities.
- Evening
What shall be done to outer shells of turnouts before putting into extractor to wash?
- Turn inside out
* prevents damage to extractor due to buckles
What else is allowed via department policy to be washed in extractors besides only turnouts/PPE?
- Nothing
What is unique about Type III engines?
- 4 wheel drive
- can pump water while driving (pump and roll)
How many Type III in the city?
- 5 (FS# 35, 87, 88, 89, 98)
When all Type III engines deployed out to brush incident what is their strike team designation?
- OES S/T 1880C
The department has a total of _ boats and _ helicopters.
- 5
- 6
What two compliments of maxi force air bags does the department carry?
- 56 ton: 12, (2)22*
- 236 ton: 12,17,22,32,35,44,74
- Engines
Size of aluminum blanket
- 6’x8’
* SAFETY: can conduct electricity
When cutting with an axe cut an angle of _ degrees.
- 60
Which is sharper, a single bit or pick head axe?
- Single bit
Different sizes of blowers on the job?
- 18”, 21”, 24”
With a brush hook, cut main stem at an _ angle. Cutting edge can cut _ diameter.
- 45 degree
- 3”
Level edge of a Mcloud
- 45 degrees
Hayward sizes on department
- 30”
- 42”
Floor runner dimensions
- 6’x18’
* folded to 3” width and rolled
Hydrant sling consists of?
- Combination hydrant spanner
- Adjustable hydrant wrench
- rope
Different types of cadastral maps on the department?
- 400 (1” = 400’)
- 800 (1” = 800’)
- 1200 (1” = 1200’)
Mattress carrier dimensions
- 6 1/2’ x 9 1/2’
Pneumatic power chisel cuts through mile steel plate _ thick and mile steel bolts _ thick.
- 1 1/4” (captain test question)
- 3/4”
Portable generator is good to supply _ volts.
- 110
What are the two sizes of air cushions on the department?
- 15’ x 20’ x 8’ (up to 70’ fall)
- 18’ x 25’ x 9’ (up to 100’ fall)
Gauntlet gloves are tested at _ volts every _ days by _.
- 10,000
- 60
- DWP
Rubbish carrier dimensions
4 1/2’ x 4 1/2’ (square)
Salvage cover dimensions
- 12’ x 18’
Salvage pan dimensions
- 32 1/2” x 18”
- 5” deep
- used with submersible pump
In regards to the squeeges used on the department, the curved are _ inches used to , and the straight are _ inches used to.
- 36” , ONLY to push
- 24”, push or pull
Bresnan Distributor size connection is a _, with _ orifices, that produces _ gpm and can throw water _ in diameter.
- 2 1/2”
- 9
- 600 to 800 gpm
- 30’
Syphon ejector sizes on department.
- 2 1/2”
- 1 1/2”
- 1”
- all sizes measured by INLET size of appliance
General rule is first _ companies should not approach an incident from the same direction.
- 2
The quickest and most practical method of getting firefighting lines established on a center hallway is through _ operation.
- drop bag
For a center hallway it is ideal to have two lines set up, why?
- One line can be used to hold fire in check in hallway while second line used to knock down fire in units.
Three forms of collapse?
- Lean- To
- “V”
- Pancake
Steel with elongate _ in a _ span.
- 8”
- 100’
What is the most difficult below grade fire extinguishment problem encountered in the fire service?
- Sub-cellar
* sub-cellar is level below cellar with only one interior entrance and no windows.
A basement is a _ story below grade, what has _ its height or less above the grade level.
- full
- 1/2
- when calculating the height of a building, the basement is counted as the 1st floor.
- Basement fires typically burn longer and attack the structural supports directly.
A cellar is a below grade area that has _ than _ its height below grade.
- more
- 1/2
A cellar that is totally below grade (frontside,rear) will have _ stairways and _ windows.
- 1 or 2
- 0
What shall be done prior to members entering a cellar or basement fire?
- Shut off electric and gas supply (utilities)
Dorothy Mae Ordinance went into effect _: All pre - _ multiple unit residential buildings, _ or more stories in height must meet certain specified retroactive fire safety requirements.
- June 20, 1984
- 1943
- 3
Self closing devices opening into an interior stairway, hallway or exit shall be _.
- UL Listed
A fire department inlet connection is required when the total number of sprinklers in a building exceeds _.
- 20
For Dorothy Mae all sprinkler heads shall be listed _ type or _ type and be rated for the lowest operating temperature available _ degrees F. EXCEPTION: _ degrees F sprinkler used under skylight.
- residential
- quick response
- 135 degrees F, 145 degrees F
- 212 degrees F
For Dorothy Mae, sprinkler heads inside of a unit above the door should be at least _ and no further than_ along a line perpendicular to center of door.
- 5’
- 7 1/2’
