Chapter 4 - Positioning the Apparatus Flashcards
When positioning a vehicle, the driver must apply what skill?
size-up skills
Who, besides their immediate task, must a rig consider when positioning at a incident?
needs of other units responding
Once a pumper is in position with hoselines stretched and operating is it…
nearly impossible to reposition or super easy?
nearly impossible
A driver should position their apparatus for the _______ and most ________ use of the features of the rig.
- safest
- advantagous
How will you be able to efficiently execute any maneuvers and tasks that the IC or the IAP may require on scene?
be well trained and knowledgeable in local polices and procedures
What is the PRIMARY function of pumper’s on a fireground? (2)
provide water directly for fire streams
or
to support other pumpers/aerials
Which three people/things will determine the best placement for the first-arriving and later arriving pumpers on the fireground?
Local policies, company officer and the driver/operator
_______ planning and district _______ will assist the driver to make informed decisions regarding apparatus positioning.
preincident
and
familiarization
Size up does what for your position at a incident on an attack pumper?
determines the most advantageous position
The first arriving driver and officer on scene must OBSERVE conditions and determine the best apparatus position based on these 2 things.
initial attack strategy
and
department policy
What will set the scene for later arriving rigs?
the _____ of the initial apparatus
local operating ________ and
orders from the _ _ (_____ ______)
- position
- guidelines
- IC (incident commander)
If you arrive and fire is showing, you should place the apparatus in a safe position that offers the ____ ____ ____.
best tactical advantage
What is an additional factor you must consider If you arrive and fire is showing, and you place the apparatus in a safe position that offers the best tactical advantage?
an exit route in case a withdrawl becomes necessary
3 things to consider when positioning for fire attack?
- in investigation mode, pull past if feasible to see 3 sides of building
- consider the best/efficient access point for personnel and equipment to investigate
- based on local policy, remain with the rig to connect for water supply, FDC, assist pulling attack lines, or operating pump
If you cannot make a standard apparatus placement, what should you do?
notify incoming rigs of the situation and changes made to accommodate the incident
In a rescue situation, life safety is what number of tactical priority?
FIRST
How should you position the rigs in a rescue situation?
to facilitate the most effective deployment of ground ladders (or aerial)
Should you consider the apparatus an exposure when protecting exposures?
YES
If the fire has potential to threaten exposures how should you position the rig?
so fire streams can be deployed to protect exposures
When protecting exposures, where should you avoid placing the rig? (3)
where it may be subject to high levels of radiant heat, falling embers or other products of combustion
What is the primary CONCERN of the driver and officer in the placement of a pumper?
establishing water supply
If a confirmed fire is in a limited access narrow driveway or alley, the first arriving pumper should consider laying what?
their own supply line
What might a supply line, especially LDH do to later arriving apparatus?
block their access
What should be in place to minimize supply lines blocking incoming rigs?
guidelines based on local conditions and resources
Where should a supply line be laid?
where they are accessible to later arriving rigs
Only when can a pumpers onboard tank be considered for water supply?
after proper size up confirms location and extent of fire
If the first arriving pumper is located in a difficult area such as a narrow driveway or alley, a WHAT may be laid to the scene as the first apparatus moves into position?
supply line
Choosing your method of attack..
for handlines or portable master streams..
for fixed appliances….
- close proximity to the building or incident for effective water supply
- in a safe location close enough for the stream to reach target (plus consider collapse
Should you consider accessibility of water supply to the pumper in hoseline deployment?
YES
When deploying a hoseline, position the pumper to better support the deployment of _______ for fire attack or ______ for FDC.
- hoselines
- supply lines
What direction should you position the rig in wind?
upwind
Why should you position the rig upwind? (2)
- eliminated need for SCBA for driver
2. eliminate possibly becoming an exposure
When practical, what type of surface should you park on?
why?
hard surfaces
it will eliminate the chance of getting stuck in an unpaved area
Is the build up of ice and snow on a rig before and during an incident relevant to apparatus safety?
YES
Why do you park uphill at hazardous or flammable liquid incidents?
Is it the same for vehicle fires?
it eliminates the chance of a hazardous liquid flowing under the apparatus
Yes, burning fuel may leak
Where is the only exception to parking uphill and why?
wildland fires because these move uphill faster than flat terrain or downhill
On a roadway response, position the apparatus in a manner/location that is safe from ________ of the incident and protects _____ from oncoming traffic.
hazards
personnel
Where should you block on a roadway with the rig?
lanes ff are working on as well as an additional lane for a safety zone
When laying hose to an incident, should you lay it in the middle of the street? why or why not?
No, to the side, especially LDH because its almost impossible to move once charged and may not be able to be driven on
What 2 types of building fires may be more likely to have a sudden collapse?
extensive fire involvement or
houses in poor condition before the fire
How far should apparatus and personnel be to maintain a collapse zone?
1 1/2 times the height
Where is it the safest to be if a collapse occurs?
the corners of structure
Where might it be a good idea/most advantagous position to place apparatus at a fire (possible collapse), especially an aerial using a master stream?
the corners of the building
What does preincident planning do? (for fires)
aids in identifying bulidings with a high potential for collapse
What indicators factor in to the IC’s decision to withdraw rigs and FF from a building because a large scale structural collapse may occur?(5)
- reinforcement rods (ornamental stars/bolts)
- bulging walls
- traveling exterior cracks
- falling brick
- interior collapse
Overhead utility lines should not be a factor when positioning a apparatus, especially if fire or weather conditions are likely to cause them to fall.
TRUE or FALSE
FALSE - they are a factor
Fires that are large or that have the potential to spread to exposures might dictate you to position the apparatus WHERE with an open WHAT to withdraw?
farther away
route
Falling debris from building, especially high rises , can be dangerous to ______ and damaging to the ______ and the _____ in the vicinity?
- Fire fighters
- apparatus
- hoselines
How far, depending on the incident, do apparatus, equipment and personnel be protected from falling glass and debris at the base of a high rise fire?
200 ft
When considering falling debris, the driver should consider the ability to remove portable equipment from the apparatus. Where should you park and what should you do with the compartment doors?
park where ladders and portable equipment may be removed safely and efficiently
-park where compartment doors can be opened completely
Blocking access for the aerial can seriously ______ the outcome of the scene.
jeopardize
Do many jurisdictions require the pumper to yield an optimum position close to a building for an aerial?
YES
Why is it easier for a pumper to be farther away from an incident then a aerial?
pumper carries different lengths of hose that can be added to, aerial has fixed length ladder or boom
What is the “inside/outside” method of apparatus placement?
What should be considered as well?
inside = less than 5 floors, (4 and under) attack pumper closest to building, aerial outboard outside = greater than 5 stories, aerial inside for maximum reach
spreading of the stabilizing system/ground ladders (must be able to get them out of the back of the aerial
Why should you position a pumper providing water supply to an elevated stream (aerial or pumper) as close as practical?
friction loss and elevation are major considerations when supporting elevated streams
Urban living or shopping districts that have been renovated to appeal to pedestrian use can hamper apparatus access?
YES or NO
YES, but prior to this fire prevention planners should have reviewed it
Where should a pumper position in order to supply an FDC efficiently?
as close to a water source as possible
Preincident planning helps to determine water supply sources for FDCs.
TRUE or FALSE
TRUE
In some fire departments, the first arriving pumper does this at the FDC? in all?
supports
not in all jurisdictions
Most FDCs are located in close proximity to a _____ _______.
Fire Hydrant
If a static water supply is needed to supply a FDC, position at the water supply. What might be needed at this point if the distance is too great?
relay or water shuttle
Should a driver cross-contaminate a nonpotable (non drinkable) water source and a potable water supply?
NO
Some hard intake hose is designed to withstand the vacuum associated with drafting. If under positive pressure, as in high static pressure, what might happen?
coupling failure or hose rupture
Many fire departments require that drivers place _____ valves on the small diameter discharges of dry barrel hydrants before connecting to the _______ diameter discharge.
- gate
- large
Why do many fire departments require that drivers place gate valves on the small diameter discharges of dry barrel hydrants before connecting to the large diameter discharge?
so additional hose lines can be connected without shutting down the hydrant
What is the preferred type of hose for hydrant connections?
large diameter INTAKE HOSE
Large diameter intake hose is common in what lengths?
What other lengths are available if in close proximity to the hydrant?
- 100 ft
- 10 to 50 ft
Why must the driver know the position of the intake hose on the side of his or her vehicle?
in order to properly position the apparatus
The distance to place the rig from the hydrant must be judged from the hydrant rather than the curb line because…..
hydrants are located different distances from the curb
Why must the driver stop close to the curb with the pump intake a few feet short of being in line with the hydrant?
to avoid blocking the street
Why should you stop short of they hydrant to connect LDH intake hose?
it allows the hose to curve slightly, preventing kinks that could drastically restrict flow
What kind of twist should you put in the intake hose to minimize the chance of kinking?
counterclockwise twist
Does it take practice to put a counterclockwise twist in a intake hoseline in order to prevent kinks and does not restrict water flow? why?
YES - to determine the # of twists for any given hose length
If coupling disconnect or fail at the hydrant, where is it advantageous to stand when opening?
behind the hydrant
When you have front and rear intakes, the driver should stop a few feet ______ or a few feet ____ the hydrant for intake hose to curve?
short
beyond
Proficiency in front or rear intake connections is achieved with what?
practice with your assigned vehicle
When might you use one or two of the 2 1/2 inch outlets on the hydrant? (2)
when LDH is not available or when maximum flow is not required
Will a pumper ever have to make multiple intake connections from a well pressurized (strong) hydrant? What combo?
YES - connect to steamer intake (large diameter intake) and a smaller hoseline
What operation uses one strong hydrant to supply 2 pumpers?
Dual pumping
In dual pumping, are the 2 pumpers generally in close proximity to each other as both of them are being used as attack pumpers at the same incident?
YES
Is tandem pumping a form of relay pumping? How are the pumpers positioned?
YES
close together rather than evenly spaced in the supply hose layout
When might you use tandem pumping?
A.When there is too much pressure from the hydrant?
B.When pressures higher than a single engine is capable of supplying is needed?
C.When a water supply source is too close to the scene
D.When it is necessary to supply a high-rise sprinkler system or standpipe system
B.When pressures higher than a single engine is capable of supplying is needed
and
D.When it is necessary to supply a high-rise sprinkler system or standpipe system
How far can rigs be apart in tandem pumping?
300 ft
Can tandem pumping operations be used in situations where the attack pumper is located close to the water source, but a great distance from the fire?
YES