Q3 Flashcards
What are the characteristics of webbing the CFD uses ?
17kn , and a meltpoint of 193C. Can be used for life safety applications and utility.
T of F fire extinguishers can take the place of a hand line?
False. They do NOT
If fire has not been extinguished after the entire extinguisher has been discharged, what should you do?
Withdraw and reassess
How many letters is the serial # for a 60 min cylinder ?
5 digits. For a 45 min cylinder it is 6 digits
What re the 4 modes for mobile compressors ?
CBSD Cascade , booster, shoreline and diesel
What are the fill stations and colours the coincide
Training - blue
HQ - pink
Vehicle and maintenance - orange
High rise -yellow
Air light - GREEN (ALG)
What is the action called in phase 2 when the doors can open/close depending on what FF want to do?
The peek a boo feature
Where are the 3 places the elevator recall key switches are most often found in?
Elevator rooms (most )
Alarm rooms
Security desks (least)
When was the Calgary Hook ladder and bucket corps formed?
August 25, 1885
What is the CFD vision?
To be an international fire service leader
Who was the last LODD death?
John Morley James - July 13 1992
What is stack effect?
Natural, vertical movement throughout a high rise building caused by difference in temperatures between the inside + outside air. Not caused by fire - cause smoke to spread throughout the building
What is stratification l?
When the smoke in a building rises until it becomes cool and settles on a particular floor
A fire pump is required if a building is past____ floors
3
What floors are in each zone: Zone 1,2 & 3
Zone 1: 1-3
Zone 2: 3-13
Zone 3: 13 and anything greater
If there is a clogged connection on an FDC what is the best method to clear it?
Use a tool. Avoid using your hand !
Elevator operations: What does phase 1 mean?
Emergency recall: all elevators in that shaft return to the lobby and all door open. May be automatically initiated when a fire alarm is activated.
What does it mean if the firefighter helmet indicator is flashing?
Not safe to use
What are 2 characteristics of the PASS alarm noise and duration?
Must be at least 95 decibals and co off continuously for 1 hour
What is a safety precaution for PPE?
Always keep gear as dry as possible. Moisture can transfer heat rapidly.
Thermal burns at compression points - if felt, withdraw
What does the AHJ do?
Adopts and amends codes to meet local requirements
Safety factors on a building range from:
2:1 but can go up to as high as 6:1
What are some building collapse factors?
Time of Fire involvement
Building age and maintenance
Sounds of structural movement
Spalling of concrete members exposure of reinforcing steel etc
What 2 products of combustion are the most common produced at structure fires
CO/ hydrogen cyanide (HCN)
What fire development factor affects HRR?
Fuel type
What type of fuel can be the most dangerous of all types
Gaseous fuels
How many LODD are there in the CFD?
9 (10 w/ Billy steward)
When does testing occur for the UAC connection on the MSA G1?
Annual inspection and testing - performed by MSA tech and after each time UAC is used either operationally
Or during training
What is the strongest part of a roof?
Load bearing walls, corners, peaks, etc
Is sounding the roof enough to ensure roof stability?
No. It provides no info about structural members beneath the sheathing . Visually looking is the only way to confirm
What is a kerf cut?
Easiest and fastest hole to cut, only info is provided whether smoke or flame is present. Single slice through the roof
What are the three most challenging fires?
- Basement fires
- Windowless buildings
- High rise bldgs
What will directing a fog stream into a vertical exhaust opening while interior crews are inside do?
Never do this, It will force smoke, heat, and steam down onto them.
When conducting PPA operations: if there is fire attack going on, and a search team goes interior, what should the search team do if they encounter a closed door ?
Leave the door shut and only search OPEN compartments. Opening new doors have high potential to change the flow path. Crews need to enter and exit the structure from the intake only.
IFSTA pg.510
What will the application of water do to the compartment pressure?
Reduce the pressure differences that the fire creates, making PPA more effective
Before and after ventilating, walk along the ________________ and the strongest points of the roof.
Ifsta pg516
Walk along the load bearing walls
When monitoring air levels, high levels would be _____ than air?
Low levels would be what?
High levels would be LIGHTER than air (rise)
low levels would be heavier than air ( sink)
Is CO heavier or lighter than air?
Lighter than air. It will rise
What level is considered an oxygen deficient atmosphere? And what is the most common cause
Anything less than 19.5% oxygen
Combustion is the most common cause of oxygen def atmospheres.
- Oxidizers are combustible Y or N?
- Will they support combustion.
Oxidizers are NOT combustible, but do support/enhance combustion.
What are the two modes of combustion?
Give an example of both
Flaming and nonflaming
Flaming-FIRE. Occurs when a gaseous fuel mixes with oxygen in the correct ratio and heats to IGNITION temperature. (Not to be confused with AIT)
Nonflaming: charcoal briquets. produces a smouldering glow occurs more slowly at lower temp
If there are high levels of incomplete combustion, what does that do to a fire?
Produces more smoke
All compartment fires begin in the incipient stage as:
FUEL limited fires
What is a good indicator a fire is leaving the incipient stage?
Flame height
What class are halogenated extinguishing agents used for?
Class B AND C
When turning the stem on a dry barrel hydrant, what does turning counterclockwise do to the hydrant?
Open the hydrant.
Ifsta-pg588
A few examples of static water sources are:
Lakes, ponds, rivers, swimming pools, portable water tanks, large above ground animal watering tanks. (Some can be equipped with a Dry hydrant connection)
What are the three types of hose rollers ?
Edge protection, LDH drainage(slides along LDH) and hose collection. (Powered hose rolling device)
Hose appliance definition:
Any hardware used with fire hose to control the flow of water and create pathways for water through hose layouts. (Think wyes, Siamese)
What does a water thief resemble?
Wye
What is the first task for a hydrant position when conducting a forward lay?
Pull enough hose to reach the hydrant and wrap around it.
Ifsta pg. 602
What happens to water at 100C?
Expands approx 1700x it’s original volume
The _____ of the stream is a result of the nozzle pressure
Velocity
Are you allowed to leave the deployable ground monitor unattended ?
NO. -UNLESS, it is firmly secured to a stationary object and is within sight of the engine operator.
Stacked tip sizes for the blitzfire
24mm, 32mm & 38mm OR
1”, 1 1/4”, & 1 1/2”
Where is an exploratory search conducted if victims whereabouts are not certain?
At the front door and proceeds through an assigned area in systematic fashion.
*****
What are the A1 & A2 levels for H2S on the drager X-am 2500?
HYDROGEN SULFIDE
A1: 10ppm
A2: 15ppm
What kind of knot is this?
In-line butterfly
What are the A1-A2 levels for LEL?
10-20%
What are the A1 & A2 levels for CO on the drager X-am 2500?
25ppm for A1 & 50ppm for A2
What are the three main types of nozzle control valves? And what is the control valve shown in the picture
Ball valve, slide valve, and rotary valve
-BSR
Slide valve operation shown in picture
What are the 4 critical fire steam elements?
HANP - HOSE, AGENT, NOZZLE, PUMP
IFSTA pg. 623
Characteristics of a straight stream are similar to those of a:
Smooth stream
When making entry on a structure fire;
An indication when you observe fast air movement at the bottom of the door and smoke moving out the top indicates what?
Active fire in the structure. (Apply water to ceiling using straight stream in a side to side motion to improve conditions)
Ifsta pg. 675
Blitzfire: what is the discharge elevation (in degrees) and the pivot from centre ?
Discharge elevation of 10-50 degrees, and a 20 degree pivot from centre
What 2 types of nozzles are used at high rise incidents ?
Smooth bore & blizfirenozzle w/ stacked tips
To reduce a 65mm handline is to shorten the stretch of a 65mm hose?
False- reducing a handline would mean adding a “reducer”. (65mm to 38mm)
What are the ICs priority’s?
Life safety, Incident stabilization, property conservation
“LIP”
How do you prevent water hammer?
CLOSE nozzle slowly.
What is the odour added to natural gas that has a distinctive rotten egg smell?
Mercaptin
How far should you keep the public back from downed power lines?
Minimum 10m-15m
What are the three criteria that must be met for modern airbags to deploy:
- Vehicle was in motion, travelling at speed
- Crash or collision occurs
- Rapid deceleration
Sometimes “smoke” is seen emanating from airbag following deployment. This is talcum powder
Airbags: How long can the possibility of the capacitor hold a charge for even after the battery is disconnected?
Capacitors may hold charge for a few seconds to 30mins, which can contribute to post collision deployment
Combi tool stats- spreader/cutters
Max spreading force:
Max pulling force:
Cutter opening:
Max Spreading force: 337,230lbs
Max pulling force: 13,714 lbs
Cutter opening: 12.2 inches
Shutting off power to a vehicle does not mean all systems are immediately safe. Restraint systems can work for up to __________ after shutdown
1 hour
What is the recommended distance between the apparatus and incident site?
Approx 4m for every 10km/h of posted road speed
Exposure of vehicle tires to high voltage electricity can result in sudden explosion failure of up to _____ after contact
24 hours
Fighting fires on a transmission line right of way;
Low level fire stay back:
High intense fire stay back:
Low level fire stay back: 10m
High intense fire stay back: 32m
What is the minimum number of escapes needed while on a roof?
You must have at least 2 means of escape*** at locations REMOTE from each other
What intake/exhaust must you have for vertical ventilation to work?
A horizontal inlet opening at or below the level of fire is needed to provide a flow path for fresh air to enter the structure.
Ifsta pg.514
What mode is activated when firefighter control (phase 1 & 2) is confirmed?
Peek a boo function.
(When open button is released the doors should immediately return to closed position)
Evacuation of a high rise building should concentrate on what floor in sequence ?
- Fire floor, 2 above and 2 below.
- Floors above the fire. 5 at a time working to top.
- Floors below the fire. 5 at a time until bottom
On a ground cover fire, what does the status “being held” mean?
Fire not likely to spread under prevailing weather conditions
When conducting an indirect attack on a grass fire what would that look like?
Constructing anchor lines, natural fire breaks or creating fire breaks
What can be a major problem with basement fires? (Excluding having a walk in basement and no windows)
Residential basements can be unfinished with exposed floor joists, causing failure sooner. Floor assemblies can reach a point of collapse before crews arrive
If dragging a hose line through multiple doorways, how many doors need to be managed ?
Proper door work is imperative to mitigate flow path. However only the first door (inlet) needs to be managed.
-CFD flashover manual
How often are ladders tested?
Annually, on every Sunday of the month, and after any use that exposes them to high heat or rough treatment
If you are butting a ladder from the outside, where on the ladder should your hands and feet be?
Hands should be grasping the BEAM, and one foot should be on bottom rung.
What kind of bend is this ?
Round turn
Out of which of the 3 methods of tactical ventilation CFD uses, would an exhaust opening be ineffective to the overall strategy?
Positive pressure pressurization. PPP
If you create an exhaust opening the building will not become over pressurized and can let smoke/contaminates inside
What is the confirmation of firefighter control in an elevator? (Phase 1 & 2)
Peek a boo safety feature.
What are the only attachment points on Yates Voyager harness that are rated for usage?
D rings.
There are 5 diff D points used on class 3 harness
CFD will reference any building ___ or more stories as a high rise structure
6
Line vs staff personnel
What is a potential indicator that a head on collision has occurred ?
Spiderweb patterns on the windshield often caused from passenger side airbags
What would be an injury potential from a rear end?
Whiplash effect
What form of MVC is the pt 3 times more likely to die from severe injuries ?
Rollover
Most model passenger vehicles use ______________ pretensioners, often located in the base of the B post
Pyrotechnic pretensioners
On the Akron saberjet: The smooth bore is operated by the:
The fog waterway is operated by the:
Smoothbore: operated by the BAIL. BAIL/BORE 4:4
Fog: operated by the bumper
How long is air in a cylinder good for after filling?
6 months
