Fireground Ops Flashcards
Technical advances and improvements are designed to do what?
For the most part they are designed to supplement the use of water against a fire or to increase its efficiency.
NFPA 1410
Standard on Training for initial Emergency Scene Operations, provides an objective method of measuring performance for initial fire suppression and rescue procedures using available personnel and equipment
NFPA 1410 specifies…
Specifies basic evolutions that can be adapted to local conditions
Three major tactical priorities on the fireground
Life safety, Extinguishment, Property conservation – Listed in order that they should be carried out, but can be done simultaneously
4 ways that heat travels
Convection, radiation, conduction, and direct flame contact
What is in plentiful supply in structural fire situations?
Fuel and oxygen
Convection cycle
Heat transferred by circulation with a medium such as a gas or liquid
Which heat transfer method is responsible for the need for ventilation?
Convection
Modern building codes are aimed at limiting fire spread by convection through fire resistant construction, which is intended to confine convection currents to __
One floor or to a small area of a floor
Which heat transfer method is the greatest cause for exposure fires after the fire has built to sizable proportions?
Radiation
Will ventilation help remove radiant heat?
Not really, radiant heat must be counteracted with water on the seat of the fire
Which heat transfer method is usually the least of the problems
Conduction, but it should not be overlooked
Conduction can cause steel members to fail. 100’ steel expansion at 1000F?
9 inches
Rollover
A condition where unburned products of combustion from a fire accumulate at the ceiling level in a sufficient concentration that they ignite momentarily.
Does radiation alone generally cause flashover?
No, it is usually a combination of radiation and convection
Incomplete combustion causes what gas to be produced more?
Carbon Monoxide
How can fire fighter’s control backdraft?
By using proper ventilation and fire attack procedures
A fire department must operate using what system on the fireground?
Incident Management System (IMS), this is required by law
What are the primary responsibilities of an engine company?
Life safety and applying water to the fire
9 basic firefighting tasks of an engine company
search and rescue, water supply, use attack lines, use backup lines, protect exposures, use master streams, tactical use of protective systems, property conservation, and overhaul
Special attention should be given to which engine company task?
primary search
3 additional size up factors
time of day, weather conditions, and life safety considerations
The IMS system must have an….
overall strategic plan
Who is responsible for the strategic plan?
The incident commander
__ will determine how you prolong your actions - along with the location and intensity of the fire.
Proper sizeup
Engine company personnel should have a good working knowledge of their __
first alarm district
Equipment should be chosen for its…? (two things)
quality and dependability
In regards to personnel, equipment should be chosen…
that allows a limited number of fire fighters to carry out fire-ground operation safely and efficiently
It is the responsibility of the __ to ensure that the fire apparatus and the equipment carried on such apparatus is compliant, adequate, and functional for the task.
AHJ
The engine itself should be equipped with a pump having a rated capacity of no less than __ GPM and a water tank that carries at least __ gallons of water.
750 GPM; 300 gallons
The operational objective is to arrive at the scene of the emergency with the necessary equipment for __
immediate life safety operations and emergency control
NFPA 1901 requires a minimum hose storage for 2.5 inch or larger hose of __
30 cubic feet
NFPA 1901 requires two areas with minimum of __ cubic feet to accomodate 1.5 inch or larger preconnects.
3.5 cubic feet
Which size hoses can be used with a divided hose bed?
2.5, 3, 4, 5 inch hoses
NFPA 1901 requires a minimum of __ ft of 1.5, 1.75, or 2 inch hose.
400 ft
Preconnected hose lines of 1.5 or 1.75 inch should not exceed __ ft in length because of excessive friction loss.
250 ft
What are the most common lengths for preconnects?
150 or 200 ft
NFPA 1901 requires a minimum of __ ft of 2.5 inch hose.
800 ft
Because of the reduced nozzle pressure and lower nozzle reaction, a line with a ___ nozzle will be easier to maneuver and operate inside the fire building.
Solid stream nozzle
What is the type of nozzle where the tip is equipped with a screw down tread at the end, usually attached to 2.5 inch.
Leader line type, so that a smaller hose line can be added to the end.
A supply hose is an LDH of __ inches or larger.
3.5 inches
NFPA 1142
Standard on water supplies for suburban and rural fire fighting
NFPA 1142 states that where delivery rates exceed __ gallons per minute and water is moved a long way, an LDH is most efficient
500 gpm
A 4 inch LDH flows almost __ times the capacity of a 2.5 inch
3.5 times
A nozzles purpose is to convert __ to __
pressure energy to velocity energy
What nozzles does NFPA require?
One combination spray nozzle, 200 gpm min. Two combination spray nozzle, 95 gpm min. And one playpipe, with shutoff and 1-, 1-1/8-, and 1-1/4- tips
Solid stream handlines may have nozzle tips up to __ in diameter
1-1/4 inch
At 50 psi an 1-1/8 inch tip on a 2.5 inch hose will flow __
250 gpm
At winds above __ you will need to use a straight tip for penetration.
30 mph
In most interior structure operations, the fog pattern of a spray nozzle is no greater than __
30 degrees
NFPA 1901 recommends a master stream appliance of __ gpm minimum.
1000 gpm
When the master stream appliance is not preconnected, __ short sections ( __ to __ in length) of 2.5 or 3 inch hose or and LDH should be rolled in doughnut rolls and connected to the appliance.
One or two; 15 to 25 feet
NFPA 1901 requires a min of __ ft of soft section hose or __ ft of hard suction hose.
15 ft soft or 20 ft hard suction hose
Pumpers will carry a min of __ __-foot section of hard sleeves (hard suction)
2 10-foot sections
A side or rear intake may be used, but normally the soft suction hose is connected to the __
front intake
Which intake location is most efficient when drafting?
Side intake because it is closer to the pump; front intake permits easier maneuvering and better positioning
Engine ops book recommends connecting __ valves to the 2.5 inch connections on a hydrant
Ball valves, IFSTA says gate valves
Where there are no ladder trucks in service, pumpers should normally be equipped with a __ extension ladder.
35 foot extension ladder
Name some special circumstances that ladders can be used. (5 things)
Ice rescues, bridging incidents, shoring, hoisting operations, and damming operations
What are the 4 basic hose lays for supply hose?
- Forward lay using a charged supply line. 2. forward lay using an uncharged supply line. 3. Direct to fire - no line laid (or split lay). 4. Reverse lay using a charged line
Which type of supply lay is useful when narrow driveways or limited access may hamper operations at the fire building?
Forward lay using an uncharged supply line
When must the first arriving company officer ensure that the company has laid and charged its own supply line for water supply?
If he notes that the fire is serious or if smoke or fire is showing
The direct to fire approach for water supply is quite effective in areas that __
do not have hydrant systems
One of the disadvantages of the direct to fire approach for water supply is __
There is little or no margin of safety for attack crews.
When performing a reverse lay, __ should dictate what fire fighters should remove from the pumper before it proceeds to the hydrant.
Standard operating guidelines
__ should mandate apparatus placement.
SOGs
NFPA 1620
Recommended Practice for pre incident planning
A preincident plan should not be confused with a __, which monitors code compliance.
Fire inspection
The following factors should be evaluated when assessing the potential situations that could affect a facility during emergency conditions: (7 things)
- Construction (access to buildings), 2. Occupant characteristics (life safety considerations), 3. Protection systems, 4. Capabilities of responding personnel,5. Availability of mutual aid, 6. Water supply, 7. Exposure factors
Companies should not be assigned a task unless there is __
A task for them to perform
Consideration should be given to the following factors when developing a schedule for preincident plans: (7 things)
- Potential life safety hazard, 2. Structural size and complexity, 3. Value, 4. Importance to the community, 5. Location, 6. Presence of chemicals, 7. Susceptibility to natural disasters
Proper positioning of a pumper at a fire depends on: (6 items)
- Physical characteristics of the structure, 2. Location of the structure, 3. Availability or lack of water supply, 4. Normal alarm response pattern with companies in quarters, 5. Size and location of the fire, 6. Need for aerial apparatus
When positioning, It should be common practice for the first arriving pumper to __
Pull past the fire building in order to get a view of 3 sides and allow room for aerials
Define “coverage” as used in the Engine company ops book
The assignment of companies to particular portions of the fire ground for sizeup and to accomplish any or all of the objectives of a fire operation.
What is the first and most basic step in coverage?
Positioning the apparatus
In approaching a building with a wide frontage, the pumper should be positioned at the __
Entrance that is most accessible to the fire
In standpiped buildings, the intakes are usually near the __
Front entrance
When no rear access to a detached building is available, pumpers need to be positioned __ so that hose lines and equipment can be carried to the rear.
In front of the building or at the end of the building row
If possible, ladders (aerial and ground ladders) should be placed on __ of a building for access and egress from the building.
All four sides
How should set back buildings with limited access be handled?
The first engine should approach as close to the building as fire and wind conditions permit. The second engine should locate to the rear of the first and then proceed on foot to provide rear or side coverage.
Where do many fires start in mercantile areas?
In the work/storage sections behind the sales floor
In a mercantile area, how should the main body of fire in the rear be attacked?
From the front or unburned side of the building
Garden apartments are usually limited in height to __
Three or four stories
Do garden apartments have good or poor construction?
Poor
For high rise buildings, the first arriving company should be positioned so that crew members have ready access to __ and __
The front entrance and to standpipe inlets and outlets
Ordinarily, the first arriving engine covers the __ of the fire building; the second covers the __ and other responding companies should be __
Front; rear; directed by command
All members are expected to operate under a __
Risk management profile
To ensure a risk management guideline is in place, what must take place? (5 things)
- Command must be established, 2. Fire fighters need to be in full PPE, 3. An accountability system must be established, 4. Safety procedures must be in place and adhered to, 5. Continuous risk assessment throughout the incident
More firefighters are injured in __ more than any other type of occupancy.
single family dwellings
Even before the __ the officer should have begun a careful sizeup of the fire scene.
Pumper has stopped
Bystanders can give __
Unreliable information
Unofficial reports that “everyone has escaped” should not __
Delay or halt the primary search, especially in multifamily residences
Immediate rescue, without a coordinated fire attack, should __
Be attempted only in extreme cases (window jumpers)
Many times victims that you see __
May not be the ones in dire distress
Firefighters must be aware of the two-in/two-out rule as directed by __ and __
OSHA and NFPA 1500
RIT must be provided from the __ to __
Initial stages of an incident to its conclusion
If possible, the RIT should be a crew of __ fire fighters, one of whom MUST be an officer.
Four
During large operations, the RIT will normally be assigned near the __
Command post
RIT should access the preplan off of __ and __
The first engine and bring it to the command post
The primary function of the engine company in a rescue situations is to __ (3 things)
- Support the primary search. 2. Contain the fire. 3. Keep the fire from jeopardizing anyone within the fire building
When is the usual time that the first hose lines are being stretched and positioned?
During primary search
The search for victims is normally the function of __
Ladder or rescue companies
If the fire is smoldering, the building must be ventliated properly __ the building is entered.
Before
When the fire is free burning, ventilation should begin __ as the initial attack.
At the same time
In any type of structure, the main thrust of operations is determined by __.
The location and severity of the fire and the locationof the occupants most endangered by it.
Can you perform a primary search without an attack line when searching upper floors?
Yes, if no line is available. Either way, no time should be lost getting fire fighters to the upper floors above a fire.
Which occupants are in most danger in a typical two-story single family dwelling with two or three rooms on fire on the first floor?
Those close to the fire on the first floor and those directly over the fire on the second floor
In a large, occupied residential building, what indicates the greatest danger area for occupants?
The location of the fire and the direction of the most smoke
How should schools be evacuated?
Completely
What does the necessity to evacuate a hospital or nursing home depend on?
Type of construction, the size of the building, and the location and severity of the fire.
The SOG for search should require that the search begin __
Where there is the most danger to occupants
Following SOGs, the first are to be searched is __
Directly over the fire
Everyone engaged in search should carry a __
Fire ax, halligan tool, or claw tool
The windows of rooms that are not involved with fire and hallway windows should be __ in order to vent as much of the upper story as possible.
Opened or removed
What is an effective way to show that a room has already been searched?
Place a piece of light furniture in the doorway
How should the light piece of furniture used to show a room has been searched be placed?
On its side, with the legs pointing out of the room
When establishing water supply, __ as well as __ should be followed.
SOGs as well as safe work practices
Where the initial action is laying supply lines, this operation should involve __.
As few firefighters as possible, so others can be free for fire attack and rescue
What three factors influence the movement of water at fires?
- Water source 2. Pumper. 3. Hose
What are the four possible sources of water at a fire ground?
- Water main systems, 2. Static water sources, 3. Apparatus water tanks, 4. Mobile water supply apparatus
In regards to flow testing of hydrants, the fire department should __
Either run its own tests or be a part of the process if testing is done by another agency
Factors that affect the flow rate of a water main system are __
The sizes of mains, the capabilities and locations of elevated reservoirs, and the capacities of pumps if used in the system
Can static pressure and residual pressure both be read on the compound gauge?
YES, static with no water flowing and residual with water flowing
Percentage rule for adding lines according to engine company ops book.
Drop of 5% can add 3 times the flow. Drop of 10% can add 2 times the flow. Drop of 20% can add 1 times the flow
What are the two types of mobile water supply apparatus?
Tankers and tenders
Mobile water supply apparatus generally carry __ to __ gallons.
1,000 to 3,500 gallons; PDO book says 1500 to 3000.
Vehicles carrying 1,000 gallons of water or more with a fire pump are generally referred to as __
Tankers
Can Pumper-tankers be used to shuttle water from a water source to the fire ground?
It should not; It should be used for fire attack or relay pumping.
Vehicles carrying 1,000 gallons of water or more without a fire pump or using a small PTO pump are called __
Tenders
During shuttle operations, what determines the number of attack lines that can be placed in service?
The supply of water that can be maintained by the mobile water supply apparatus
__ is the key to establishing standard operating guidelines affecting water supply requirements.
Preincident planning
A pumper has a mounted fire pump that is at least __
750 gpm
__ percent of rated capacity at 200 psi
70
__ percent of rated capacity at 250 psi
50
Intakes must have __ if the apparatus is to be used in the US
Male NH threads; maybe a female swivel coupling with NH threads…the book is contradictory
The usual practice is to install one 2.5 inch discharge for each __ of rated capacity.
250 gpm
__ should be provided on pumpers to complement their rated capacity.
Adequate discharge outlets
The pump must not be operated above __ percent of its rated peak speed for any length of time.
80 percent
The limit of a pump may be imposed either by __ or __.
Pump speed or true pump capacity
The residual pressure should not be allowed to drop below __, except under extreme conditions.
10 psi
What is the proper thing to do if it looks like residual pressure is dropping below 10 psi?
Notify the company officer, lower the discharge pressure of the pump, NEVER shut down a hose line without consent of the people on the end
Attack hose is designed to convey water to __
Hose line nozzles, distributer nozzles, master stream appliances, portable hydrants, manifolds, standpipe and sprinkler systems, and pumps used by the fire department
The attack hose is designed for use at operating pressures up to at least __
275 psi
An LDH has a diameter __ inch or larger.
3.5 inch
When LDH is providing water to attack lines, master streams, portable hydrants, manifolds, and standpipe and sprinkler systems, what should be used?
A pressure relief device set at 200 psi
A 2.5 inch line should not be used to deliver much more than __ gpm. The FL at this flow is __ per 100 ft of line.
350 gpm; 25 psi per 100 ft
Flow for 1000 ft of one 2.5 inch hose at 175 PDP.
275 gpm
Flow for 1000 ft of two 2.5 inch hose at 175 PDP.
550 gpm
Flow for 1000 ft of one 3 inch hose at 175 PDP.
440 gpm
Flow for 1000 ft of one 4 inch hose at 175 PDP.
880 gpm
Flow for 1000 ft of one 5 inch hose at 175 PDP.
1,400 gpm
FL for 2.5 inch at 250 gpm.
About 15 psi per 100 ft
Is there a decrease in pressure when using 2.5 inch coupling on 3 inch hose?
Little will be noticed because the increased velocity at the coupling makes up for most of the loss
NFPA 1961 defines an LDH as a hose with an __ diameter of __ inches or larger.
Inside; 3.5 inches; generally an LDH measures 4 inches or greater
A 4 inch LDH can deliver a volume of water to equivalent __ 2.5 inch lines.
Three and a half times
A 5 inch LDH can deliver a volume of water equivalent to __ 2.5 inch lines
Six
If an LDH is available, it should __ be used for water supply.
Always
What will indicate what type of supply line should be used?
Training, experience, and sizeup
As a rule, a pumper at a hydrant should initially begin pumping to a unit at the fire at a pump pressure of __
100 psi
Excessively long lays, those exceeding about __ (up to __ ft max) may require relaying operations to counteract the effect of friction loss and elevation pressure.
1000 ft; 2000 ft
When in a relay, the operator must watch the pump discharge gauge as discharge pressure will fall when the next pumper up the line begins taking water. Then what should the operator do?
Adjust the throttle smoothl to bring the discharge pressure up to the starting pressure
At the start of the relay, all pumpers should be set to pump at __
150 psi
Who must make the decision as to the type of initial attack line to use?
The fire fighter
Do fire fighters use a IMS or ICS system?
IMS, Incident management system
What is the most common type of fire encountered by responding fire fighters?
A free burning fire
What are the three methods that an interior attack can be conducted?
Direct, Indirect, or combination
Which method of fire attack is used most often in offensive fire attack situations?
Direct attack
Which type of hose stream is used with a direct attack?
Solid or straight stream
What is the objective of the indirect attack?
To prevent flashover
Is an indirect attack a good choice when victims might be present?
NO, a lot of steam is produced causing burns
Where might an indirect attack be a good choice?
Unoccupied Basements, attics, and storage areas
When using an indirect attack and the area has been cooled and ventilated, what should you do next?
Switch to a direct attack
Which buildings do not get an aggressive interior attack? (6 things)
- Buildings in various stages of demolition, 2. Abandoned for long periods, 3. Burning for a predetermined period of time, 4. Contains construction features detrimental to safe interior operations, 5. Have had previous fires, 6. Are under construction
The choice of initial attack lines and nozzles depends on the __ of the attack.
Purpose
What are the four different purposes of attacking a fire?
- Holding action 2. Exposure protection 3. A defensive operation 4. An offensive operation
Is it ok to assign one person to an attack line for interior fire fighting?
No
A 1.5 inch attack line with a spray nozzle will deliver __ to __ gpm.
60 to 125 gpm
It is recommended that the use of a __ inch hoseline be eliminated for structural fire fighting.
1.5 inch
What will help to get 2.5 inch hose lines into service more quickly?
Adequate staffing
A 1-3/4 inch line can discharge __ gpm with a smooth bore or spray nozzle
120-200 gpm
A 2.5 inch fog stream will deliver about __ gpm
250
A 2.5 inch solid stream with 1-1/8 inch tip at 50 psi will deliver __ gpm
265
A 2.5 inch solid stream with 1-1/4 inch tip at 50 psi will deliver __ gpm
325
When it is known that the building is adequately ventilated opposite the direction from which the spray nozzle is being advanced, __
A fog stream can be used, but at no more than a 30 degree angle
Flow for 1-3/4 line with smooth bore 15/16 tip.
180 gpm at 50 psi
Flow for 1-3/4 line with smooth bore 1 inch tip.
200 gpm at 50 psi
Low pressure spray nozzles are available that operate at __ psi nozzle pressure.
75 psi; Remember that IFSTA states 50 psi also
What are the four types of spray nozzles?
Basic spray nozzle, Constant gallonage, constant pressure (automatic), constant/select gallonage
With which type of nozzle will a weak stream be readily apparent?
Basic spray nozzle and constant gallonage spray nozzle
If fire shows at the top of the door as it is opened, the ceiling should be hit with a __ to cool it and control the fire gases.
Solid stream
Fire fighters are much more tolerant of __
Dry heat than they are of wet heat
Where should you direct the stream if the area is heavily involved?
Direct the solid stream forward and upward at the ceiling in a side to side motion or rotate the stream.
Which size hoseline can be ideal for getting above the fire to stop vertical spread from floor to floor by way of the windows?
1-3/4 inch
What hose placement would be good on a large fire in a department store or supermarket?
Attack the main body of the fire with a 2.5 inch, Use 1-3/4 lines to keep the fire from spreading horizontally, Backup the smaller lines with 2.5 inch lines
__ are the safer and more effective option for a defensive attack.
Master streams
With __ involvement of a commercial space, use 2.5 inch lines as your interior attack lines
50 percent
In modern garden apartments, fires are often encountered in __
Basement storage rooms
How can hose lines be advanced to upper floors? (4 ways)
- Ground ladders, aerial ladders, or aerial platforms 2. By hoisting with ropes 3. By being carried in and connected through a window 4. By being passed up a window with a pike pole or shephard hook
In a stairway, one __ of hose must be allotted for each floor because so much length is taken up in winding around stairs and through hallways
50 ft section
Firefighters attempting to advance line to the fire should __ if that action will help them to advance.
Vent as they go
What color might smoke be if the fire is smoldering?
Yellow or dirty brown
Where should you vent a smoldering fire?
At as high a point as is safely possible
What is a sign that venting is complete on a smoldering fire?
The smoldering fire will burst into flame
What are the engine comany’s first line of defense?
Backup lines
Are backup lines used for exposure protection?
NO
Are backup lines used to attack the fire at other positions?
No, they are held in readiness to back up the attack lines
Backup lines should be deployed on __
All structural interests
When should backup lines be taken into the fire building?
Immediately after attack lines
The engine ops book says to charge backup lines after they are in place.
This is not how its normally done…
When are backup lines used?
When initial attack lines cannot quickly control the fire
Backup lines should have __ and __ than initial attack lines.
Greater reach and deliver more water
In general, backup lines should be at least __ than initial attack lines.
One size larger. Although pictures show a 2.5 inch backing up a 2.5 inch
A 2.5 inch line should always be backed up with __
Another 2.5 inch line with a larger tip unless these are already in use
One 2.5 inch line may be sufficient to back up two or more 1-3/4 inch attack lines when they are operating within __.
One or two floors of each other
What should you do when an interior attack with 2.5 inch hoselines fails to control the fire?
Back out all fire fighters and attack using master stream appliances
If the backup lines have to be placed in service, the initial attack lines should __
Be shut down if they are ineffective against the fire
Can a backup assignment be given to personnel that were already on initial attack operations?
No, they will be tired and the backup operation will be understandably inefficient
Master stream appliances should be charged and manned by __
Fresh crews
How many personnel should be on a RIT team?
At least 4
__ is second only to rescue on any list of the basic objectives of a firefighting operation.
Exposure coverage
What is key to full exposure protection?
The adequate number of fire fighters
Any special equipment that will aid in firefighting should be dispatched to the fire scene on the __
First alarm
Which type of fire can lead to serious interior exposure problems?
Basement fires
What are some of the greatest deterrents to exposure fires?
Unpierced fire walls
Factors that affect the severity of an exterior exposure problem: (10 things)
- Recent weather, 2. Current weather, especially wind, 3. Space between fire and exposures, 4. Building construction design and materials, 5. Intensity and size of the fire, 6. Location of the fire, 7. Availibility and combustibility of the fuel, 8. Size of the fire fighting force, 9. Firefighting equipment on hand, 10. Availibility of water
Recent weather will be a __, and present weather must be __.
Matter of record; observed
Other factors that cannot be evaluated until the company arrives at the fire ground are __
Wind direction and velocity
Where are flying brands and embers especially dangerous?
Lumber yards and other open storage areas
Who can be assigned to flying brand patrol?
Under a unified command system, the police department and other authorized radio equipped personnel, such as public works employees, or employees of local utilities.
The only way to protect exposures from radiant heat is to __
Cool them by the application of water
What should be done with a standpipe system of an exposure building?
It should be charged
Should you always charge a sprinkler system of an exposure building?
No, be ready to charge, if necessary
You should begin with what side when providing exposure protection?
The leeward or downwind side
What are the most vulnerable exposure areas when the exposure is fairly close to the fire building?
The parts of the exposed building just above the fire
Where should exposure protection hose streams be directed?
At a level somewhat above the fire
What provides a safer and more effective stream for most situations requiring exposure protection?
Master streams
What often make good positions for exposure lines? (5 things)
- Adjoining roofs, 2. Secure and safe stacks of noncombustible stored materials, 3. Buildings across alleys, 4. Courts, 5. Narrow Streets
The mobility of __ makes them desireable for interior exposure coverage.
Smaller hose lines, such as 1-3/4 inch lines, but severity may indicate need for a 2.5
When searching for fire and making openings, the openings need to be large enough for __ (3 things)
Inspection, hose line manipulation, and ventilation
Opening of concealed spaces and ventilation outlets is __
Ladder company work, but an engine company will have to do the job if a ladder is unavailable
Where are vertical channels normally placed in commercial buildings, stores, and shopping centers?
Toward the rear
In apartment buildings, each vertical shaft is usually placed so that it serves __.
Two, four, or more apartments
What is an advantage of a thermal imageing camera?
It can locate fire and heat in concealed spaces
Can a thermal imaging camera indicate the direction of fire spread?
YES
What size hoseline will be most useful controlling fire in a vertical shaft?
A 1-3/4 inch hose line from the roof down the shaft
In a large vertical opening, such as an elevator shaft or a stairway, it may be necessary to use __
2.5 inch attack lines
For the most part, there are few exterior signs of fire spread through horizontal channels, except when __
The flames reach and involve the exterior walls
Collapse may occur in little as __ minutes with bar joist roofs.
10 minutes
With basement fires, offensive fires should be conducted from __
The interior, unburned side of the building
__ is a key element in controlling a basement fire by permitting the products of combustion to escape while allowing fire fighters to gain entry into the basement.
Ventilation
Is a high fire or low fire better off for fire fighters and occupants in terms of fire spread?
A high fire
What are considered points of attack for basement fires?
Any and all openings
A basement fire requires full ventilation of __
The basement and the first floor
Which basement windows are preferably used for ventilation?
The ones opposite those being used for fire attack
In residential or commercial buildings that have basement doors to the outside, it is best to use these doors for __ and __ through basement windows. However interior stairs must be covered.
Fire attack; ventilation
Many of the vertical openings in buildings originate at __
the basement level
In a basement fire, vertical openings should be opened at __
Roof level
Master stream appliances should be __
As far away from the fire as possible while still being effective
Master streams are placed into operation when __ (3 things)
- Hand held lines are ineffective in fire attack. 2. For exposure protection. 3. For backup lines
To be effective, master stream appliances require water flows from __ to __.
350 to 2000 gpm
What are the three types of master streams?
Portable, Fixed, and elevated master stream
Portable master stream appliances are often referred to as __
Deck guns or monitors
A safety lock is provided so that the lock must be manually released before the nozzle can be lowered to below a __
35 degree angle
Some portable master stream appliances are made to take advantage of a __ to prevent movement.
Hose loop
Where a prepiped waterway is provided on an aerial ladder, the waterway system must be capable of flowing __ at __ at full elevation and extension.
1,000 gpm at 100 psi nozzle pressure
A permanently attached monitor must be provided with a __ nozzle.
1,000 GPM nozzle
What are the most common smooth bore tip sizes for master stream appliances? (4 things)
1-3/8, 1-1/2, 1-3/4, and 2 inches
How much will a 1-3/8 inch tip discharge at 80 psi?
500 gpm
How much will a 1-1/2 inch tip discharge at 80 psi?
600 gpm
How much will a 1-3/4 inch tip discharge at 80 psi?
800 gpm
How much will a 2 inch tip discharge at 80 psi?
1000 gpm
When operating a smooth bore master stream, if water supply is a problem, what should you do?
Use a smaller tip
Can a 1-1/4 inch tip be used as a master stream?
Yes, if water supply is a problem. It will produce 400 gpm at 80 psi.
What water delivery rates are spray nozzles on master streams capable of?
300 to 1250 gpm
What are general increments if a master stream spray nozzle has a selectable flow rate?
250, 350, 500, 750, and 1000
How many psi must be added due to the friction loss of the master stream device?
20-25 psi
Master stream scenario 1, 100 ft from pumper to appliance.
1-1/4 smooth bore nozzle (80 psi), 400 gpm stream, Single 2.5 inch water supply, 115 psi pump pressure
Master stream scenario 2, 100 ft from pumper to appliance.
Spray nozzle (100psi), 750 gpm stream, Two 2.5 inch water supply, 130 psi pump pressure
Master stream scenario 3, 100 ft from pumper to appliance.
2 inch smooth bore nozzle (80 psi), 1000 gpm flow, Single 4 inch supply line, 100 psi pump pressure
What is the smallest nozzle tip used on master stream appliances?
1-1/4 inch
It is suggested that a max length of __ of hose be used between the pumper and a master stream appliance when using smaller supply lines.
100 ft; It may need to be longer than this, but you should consider LDH
What is an initial recommended discharge pressure for master streams?
115 to 130 psi
A great deal of extra pressure will cause a solid stream to __
Break up as soon as it leaves the nozzle; A little bit of extra pressure will be no problem
In effect, too much pressure will turn a solid stream into a __
Poor fog stream
With a master stream, what factors determine which type of nozzle is used and how it should be operated?
Wind conditions and the distance to the fire or exposure.
What nozzle type is most effective when using a master stream for fire attack?
Smooth bore
What is one way to combat the wind effects on a master fire stream?
Move the appliance closer to the fire building if conditions allow
Solid stream nozzles will perform __ if they are positioned some distance from the building.
As well or better
A solid stream may be used to attack a fire that is __ floors above the level of the appliance.
3-4 floors
When operating master streams in poor visability, if possible to do so safely, and officer should __
Visually check the building from a safe location
What are signs that the master stream is not entering the building in poor visability?
The sound of the water hitting the side of the building and heavy water runoff
A master stream should only be used as long as __
Visible fire is in the area covered by the stream
Accountability of members, as in any fire situation, __
Is a requirement that must be maintained throughout the incident
What is the purpose of a standpipe system?
To provide a means of getting water to a fire without long, time consuming hose stretches
The first laws, passed in major cities, required standpupes in all buildings more than __.
75 ft high
NFPA 14
Standard for the installation of Standpipe and Hose systems
NFPA 14 is referenced by which entities?
Local, state, and model building codes and insurance standards
What are the 3 classes of standpipe systems?
- Fire department use (Class 1), 2. First aid fire fighting (Class 2), 3. Both (Class 3)
What hose connections do Class 2 standpipe systems have?
1-1/2 inch
Who are Class 2 standpipe systems intended for use?
Fire brigades or building occupants before the FD has arrived
Which hose connections are provided with Class 3 standpipe systems?
Both 1-1/2 and 2-1/2 connections
Based on the 1993 edition of NFPA 14, what are the 5 “types” of standpipe systems?
- Automatic Wet 2. Automatic Dry 3. Semiautomatic Dry 4. Manual Dry 5. Manual Wet
Are semiautomatic dry systems normally filled with pressurized air?
Normally filled with air, but it may or may not be pressurized
What type of valve does a semiautomatic dry system use?
Deluge valve
Does a semiautomatic Dry system have a preconnected water supply?
YES
Is the water supply normally connected to a manual wet system enough for fire suppression?
NO, the water is only to detect leaks. An FDC must be used for fire suppression
A semiautomatic dry system requires a activation at a remote actuation device located at a __
Hose station or valve
An exterior standpipe system usually runs along a __
Fire escape
Where might dry systems be found?
- Unheated buildings 2. Where cities do not require wet systems 3. Buildings built before retroactive standpipe laws were passed
Dry systems may be preferred in some heated occupancies to __
Prevent expensive water damage due to tampering by tenants
What is a problem when multiple dry systems are interconnected where they can be fed off one intake?
The time lag for air to escape the system
NFPA 14 requires that a water supply for class 1 and 3 systems be able to deliver a residual pressure of __ at the outlet of the top most hose connection on each standpipe.
100 psi; This must be accomplished while flowing 250 gpm from each of the two topmost hose connection of the most remote standpipe, plus 250 gpm from each additional standpipe.
What is the flow requirement for Class 2 systems per NFPA 14?
100 gpm for 30 minutes with a residual pressure of 65 psi
For high rise buildings, __ remotely located FDCs are required for each zone within the pumping range of fire apparatus in addition to the automatic water supply
Two
Why are two FDCs required for high rise buildings?
To reduce the possibility of all supply hose being cut by falling glass.
When available, a __ is almost always used as the primary source of water.
Public waterworks system
What is the most common arrangement for medium and high rise apartment and office buildings?
A wet system supplied by a public waterworks
In what occupancies might additional water sources be required above a public waterworks?
Industrial and warehouses
Gravity tanks may hold as much as __
100,000 gallons of water
Where are pressure tanks for standpipe systems usually found?
With smaller systems where they supply house lines with water for initial fire attack by the occupants.
Pressure tanks rarely exceed __ and can be found anywhere in the system.
3,000 gallons
How much of a pressure tank is air under pressure?
The top third
With multiple standpipe systems, when the risers are interconnected, the system must have __ intakes.
Two or more
What type of valve is usually found on the water source for fire protection systems in industrial and warehouse properties?
Postindicator valves
What type of valve is usually found on the water source for fire protection systems in apartment buildings, office buildings, and stores?
Gate valves or OS&Y valves
What are the two common types of PIVs?
Butterfly and window type
Does a class 2 standpipe system require an FDC?
NO
Are there valves between a siamese and riser outlet?
NO
Most FDCs are provided with one 2.5 inch inlet for every __ gpm of design flow rate for the system.
250 gpm
Signs should be provided to indicate whether an FDC connection serves a __ (3 things)
Standpipe, sprinkler, or both
When hooking up to a siamese FDC, which line should you hook up first?
The left side
What is the minimum size of a standpipe?
4 inches
What can you do if the fire is severe and more flow is needed to an FDC?
Hook the engine siamese connections to the FDC siamese.
The best arrangement for supplying a standpipe system is to have a pumper positioned within __ of the standpipe siamese.
100 feet
What do you need to consider with a wet system and a damaged siamese FDC?
Connect to the first floor outlet, but charge the hose before opening the valve so that water flows the right direction.
When should FD personnel use house lines?
Never
When carrying tools to make a standpipe connection, what should be considered?
Tools should be lightweight, and only those abolutely necessary brought during intial attack
Considering standpipe connections, the first hose line into the building should be at least __ feet long.
150 feet
Describe a “break apart” nozzle for highrise attack.
A low pressure (75 psi) spray nozzle rated at 150 gpm coupled witha 15/16 solid bore (50 psi) rated at 180 gpm
What has proved most effective for master stream operations inside a building with a large open area?
Single or two-inlet deluge set with a solid bore tip
Where should an equipment pool (also called interior staging or resource area) be set up?
Usually 2 or more floors below the fire floor
When working in buildings with standpipe systems (large buildings), all assignments should be given to teams of at least __
Two firefighters
Must fire fighters have hose lines to check the floor above a fire?
If possible yes, but without them if necessary
All floors, especially those immediately above the fire, are __
Considered exposures
Lapping fire from window to window if of particular concern with what type of construction?
Fire resistant buildings
In high rise fire situations, the elvators and stairways are managed by __
Lobby control
Elevators should not be used for fires on __
Lower floors of a building
An elevator should never be taken to __
The fire floor or any floor above the fire
SOGs should state that fire fighters using an elevator must stop __
Two floors or more below the fire and then use the stairway to the fire floor
When it is difficult to judge which floor the fire is on, fire fighters may be ordered to stop __
2-4 floors below the fire
If a house line is installed, what items may need to be removed before the FD can hook to the standpipe? (3 things)
House line, reducer fitting, and pressure-reducing device
Which floor is preferred to make the standpipe connection for attack lines?
The floor below the fire
Excess hose should be __
Pulled up the stairway toward the next floor BEFORE it is charged
When can initial hook up to a standpipe be on the fire floor?
When the fire is confirmed some distance away from their point of entry and off the corridor
Sometimes, if conditions are favorable, as is often the case in fire-resistant construction, the best thing is to convince occupants to __
Stay in their offices or apartments
What do some fire officials call the situation where fire has gained control of a corridor and/or wind is fanning the fire?
Blowtorch effect
Which devices can be used to for fire attack from an adjoining building?
2.5 inch handlines and master stream devices
The use of the gravity tank off an uninvolved building is a __ for water supply.
Last resort
As long as enough pressure is available, each sprinkler head will distribute water over an area of __ square ft or more
100 square feet or more
What are the 4 basic types of sprinkler systems?
- Wet-pipe. 2. Dry-pipe. 3. Preaction. 4. Deluge
What is the simplest and one of the least expensive types of sprinkler systems? Also the most common.
Wet-pipe
Where are the air exhausters located with a preaction system?
At the dry-pipe valve
Preaction systems can be used __
Wherever dry pipe systems are used
Deluge systems are usually installed in high hazard locations such as __ (4 things)
Aircraft hangers, chemical plants, laboratories, and transformers
NFPA 13E
Recommended practice for fire department operations in properties protected by sprinkler and standpipe systems
During an actual fire incident, a fire fighter must be assigned to __
The main valve and fire pump to ensure a continued operation of the system
Should the pump operator wait for orders to start pumping to an FDC?
Yes
What is a recommended pressure to pump to an FDC?
150 psi, but pre fire planning and guidlines may modify this figure
If hoselines are being used in the operation, they should be supplied by __
A different water system than the one supplying the sprinklers
Pumping into an exposure sprinkler FDC should begin when __.
Its sprinkler system is activated
What is a common mistake made when automatic sprinklers are in operation?
Shutting down the system prematurely
If at all possible, property conservation should be started during __
Extinguishment
If possible, the sprinkler system should be __ before the fire fighters leave the building.
Restored to service
The __ should take the proper steps to ensure a sprinkler system is operational as soon as possible.
Building’s owner
Overhaul looks for __ (3 things)
Fire, sparks, or embers
__ should preinspect the building before fire fighters begin the task of overhaul.
Competent personnel
Can fire fighters dress down when performing overhaul?
No, they should be in full PPE and SCBA
What should be monitored in addition to CO during overhaul?
Asbestos
What is the main purpose of overhaul?
To make certain that no trace of fire remains to rekindle after the fire force has left.
What is the second purpose of overhaul?
To leave the structure in as safe a condition as possible.
Is cleaning up a necessary part of overhaul?
No, just good PR
If conditions warrant, and if it is safe to do so, __ could perform cleanup with the IC’s permission.
A building’s maintenance force
Is the injury rate during overhaul high or low?
High even though it should be performed in an unhurried atmosphere
__ is useful in identifying and blocking off areas that are unsafe.
Barrier tape
CO levels have been shown to be __ during overhaul than during actual firefighting activities.
Higher
During overhaul, fire fighters should check the area for __
Possible clues to the ignition of the fire
A fire of __ can greatly alter overhaul operations or delay them until investigators can examine the fire scene.
Incendiary origin
Fire fighters should be sent to a rehabilitatioin sector to __ (4 things)
Rest, treat injuries, replace fluids, and have basic vital signs checked
Who might be assigned to overhaul?
Firefighters who were assigned to staging, manned unused backup lines, or were on exposure assignments
With overhaul, fire fighters should be formed into groups that should be assigned to a __ and to a certain area of the building.
Sector officer
Ordinarily, __ are assigned tasks involving hand and power tool operation during overhaul.
Ladder companies
Who is usually sent to the floors above and below the fire to check for fire extension?
Ladder company crews
Where does overhaul begin?
Close to the area where firefighting operations ended
__ will be useful when checking concealed spaces.
Portable lighting
An area where __ are found probably has not seen the effects of heat and smoke.
Cobwebs
What type of insulation is hard to work with?
Blown in insulation
Where is it especially important to make a full examination of the area under a floor?
Along walls and partitions where shafts or other vertical spaces pass through the floor
What are preferred for cutting operations during overhaul?
Power tools
With vertical shafts, firefighters ordinarily should be assigned to check __
The bottom and the top of the shaft for fire and sparks
Kitchen cabinets are usually constructed with a __ enclosed space between the floor and the bottom shelf.
3-5 inch
How is wainscoting handled?
Removed until a clean area is found and the area is wet down, as necessary
In some instances, water removal must be __
Completed first to reduce the weight on the floors so that they are safe to walk on.
Flying embers are considered
convection
What type of heat drives firefighters back from normal approach distances?
Radiant heat
The “flash” of an entire area is more likely to happen in a
Open area
Carbon monoxide is
colorless, odorless, and poisonous
How many divisions does a divided hose bed have?
Two
Why is there a strong tendency to use smaller hose lines for initial attack?
Lack of proper staffing
If discharge outlets are not available for a 2.5 inch preconnect hose line, a separate hose compartment can be set up to hold
150 to 250 feet of 2.5 inch hose
How are solid stream nozzles classified?
According to the nozzle diameter
Which smoothbore nozzles are considered for handlines?
1 and one eighth or 1 and one quarter
What produces the so called standard fire department stream?
2.5 inch hose with a one and one eighth inch nozzle at 50 psi and it flows 250 gpm
Which is perhaps the most desireable hose lay?
Forward using a charged line
Which water supply technique is effective when drafting is necessary?
Direct to the fire approach
Who ensures that the apparatus is in a safe place and if possible that other apparatus will have access?
Company officer
What are coverage assignments usually based on?
Proximity of companies to the fireground
Positioning for narrow detached building or single family detached dwelling?
Drive past the building to get a view of 3 sides
Buildings can present problems because of
Size, construction, location, or use
What is vital in mercantile areas?
Rear coverage
When positioning at high rises
consider width and length of the building along with locations of standpipes rather than height
Proper placement of hoselines and rapid ventilation may be considered
rescue operations
Preperation for rescue begins
before the alarm is received
What factors are important in asceraining what rescue operations are needed?
Occupancy, size, population, age, and extent of the fire
What will determine where firefighters begin search and rescue and fire attack operations
Initial size up
What is the average size water tank?
500 gallons
When searching upper floors, doors and windows of rooms other than the fire room should be
Opened to provide ventilation, providing that this will not spread the fire
It is the job of the engine company to
Contain and extinguish the fire and open passageways
Even with hospitals, if there is doubt that the fire will be controlled there should be
Complete evacuation
Being able to perform proper ventilation will depend on
The number of firefighters available
When an attempt to reach the floor over the fire is untenable
Ventilation from the outside is mandatory
Rooms that the fire has entered should
also be searched if possible, then the door should be shut to isolate the fire
How many attack lines are charged and flowing to read the residual pressure?
One
What is a must when drafting is the only way to ensure a water supply?
Preincident planning
What does the number of mobile water supply apparatus depend on?
Distance, fire size, fill and dump times, traffic and road conditions
Operation of the pumper is limited by
Engine speed and residual pressure
An attack line is designed to
combat fires beyond the incipient stage
The second method of relay pumping works better for houses that are
Set back from the street
An indirect attack uses what types of streams?
Solid, straight, or narrow fog
Is an 1.5 inch nozzle usually equipped with a spray or solid nozzle?
spray
Using a wider fog pattern will (4 things)
Give firefighters more protection, decrease reach, diminish firefighting effectiveness, and push fire through a building
Do this after the main body of the fire is knocked down
Let the fire “blow”
How much more water and a inch and three quarter hose flow over an inch and a half
Double
In a smoldering building does smoke rise rapidly or slowly?
rapidly because the smoke is hot
Rit crews are in addition to
backup lines
What is the worst combination of factors for exposure protection?
Recent dry weather and high winds
Exposure lines must be placed where they will cover
the max amount of exposed area
What hose is desireable for interior exposure coverage?
Inch and three quarter
How high should you make an opening to control vertical spread of fire?
About waist high
Where are basement fires usually vented?
The burned side (proper direction)
What should be kept outside of the collapse zone?
Personnel and equipment
Master streams can be used for
fire attack, exposure protection, and backup lines
In a window, a master stream should be moved
horizontally and vertically
Automatic dry standpipes are pressurized with air
Semiautomatic dry pipe may or may not be pressurized with air
Is the water supply of a semiauto dry pipe enough to handle water demand for fire fighting?
Yes
Where are gravity tanks mounted when supplying one and two story buildings
on the ground
How many supply lines should be connected to intake FDCs?
At least 2
Items in an equipment pool
Lights, hoses, nozzles, forcible entry tools, fans, pike poles, and SCBA cylinders
What normally keeps a deluge valve closed?
Compressed air
Manual operations of special fire protection systems are normally assigned to
building personnel
What three things to reduce injury during overhaul?
Preinspection, fresh crews, accountibility
What is the primary purpose of overhaul?
To make sure the fire is extinguished completely
