vechicle extrication Flashcards
cards
Type a bus – converstion style - cutaway front section- left side drivers door- 2 subclasses are
a-1 Gvwr of 14500 or less and A-2 GVWR greater that 14500 but less or equall to 21500
school buts trype B stripped scassis. entrance door behind front wheel. two sub callifications are
B! GVWR of 10000 or less B2 Gvwr greater that 10,00
Trype C bus. – Also known as conventions bus. a chassis with hood and fender entrence door is
behind front wheels. Gvwr greater that 21500
— to — % of all schooll buses are type C or D
80 - 90
Type D shool bus also known as a
Transit style
Type D shool bus stripped chassis outer body mounted to bare chassis door is ahead of
front wheels
Type d busses had a —- front. and a capacity of
flat — 80 to 90
bus inner and outer panels consist of – – gage sheet metal
22 to 24
length of bus no greater that
45 feet
width of bus no greater that
102 inches
inside height of bus is
72inches or greater
72 inches or greater
width of aisles 12 at seat cushion but
taper upward to have 15 inch min at top
bus aisle clearance for wheelchair
30 inches
30 inches
school buse with power lift or ramp with have a aisle of
30 inches leading from wheelchair to emergencey door
chassis frame consists of two long steel channel beams of – to —gage with steel cross members of – gage
8 to 10 and 14
floor deck of bu is – gauge plywood of deck is – to – coverd with rubber or vinal matting
14 attached to the chassis frame. 1/2” to 5/8”
bus bow trusses are what gage
12
Rub rails are – gauge and are – inches or more in width
16 and 4”
rub rails are placed with the — — at the floor line and mid rail postioned at the area of the ===
botttom rail and seat custion
crach rail is — gauge and extend just aboue the floor are between the floor and —– —–
seat rub rail goes the length of the bus.
entrance dorr can measure 24” in width and – in height
24 and 68
emergency exits rear doors ope outward from — —
left to right
emer door hinges paino and 3 more
three bolt - single strap or nonexposed hinges.
Trpe D does not have rear door but will have emergency escape windows —– and a side doorlocated
just above engine access and side door in the middle secion of the bus
side window exits at least –” and no more than–” in height and at least –” in width
9 to 13 height and 22 width
roof hatches are hinged on the —- side and are operable from —-
front side – both inside and outside
roof hatches are —”
16 1/2”
active regeneration – fuel is infected into the system and burned off at temps of —-
1112
Manual regen is completed when active regen fails and when the ========
parking brake is set.
The greatest concern for the officer at a school bus extrication
gaining and maintaining control of the incident through proper scene management
SWOT analysis means
Strengths Weaknesses Opportunities and Threats
2 type of suspension systems on buses
metal leaf spring and air ride
aire ride system designed to protect cargo and grame withh aire bladders that are under pressure tanging up to —
120 psi
if you cant use normal method of shuting down exgine use a
10 lb min dry chem extinguisher in to the air intake device.
what type of cribbing is used at the rear and under the front bumper area
cross tie
When calling for resoures on a bus use a class —
C rotator with an articulating boom – TRT or has mat units
gasket push out window uses a — —- glass and comes in several configureations
flat laminate
Mastic style is one section of glass and is curved.
must use a glass saw or reciprocating saw
bus on side wall access use a —- to cut the bow truss
hydraulic cutter using a cross cut technique to keep the post stub from protruding
side wall acess begin cut just inside the
outer section of the window frame
on rear door access of bus use a standing platform utilizing two or more
cross tie box cribbing and a backboard.
side emer door on a Type D will have — glass panel
one
bus steering wheel can be moved using a small
tow truck that is equipped with a stationary boom
Hybid bus- a —— system is most common on Type C and C Designed to work in tandem with a — operated ICE
paralled — Deisel
bus charge depleting hybrid syestem is a —- in hybrid
plug in
bus– charge sustaining hybrid standard hybrid that operates on ——– ——– to charge the battries
regenerative properties.
bus series operated propulsion design uses the —- motor to propel the bus and the ——– engine is only used to
electrice motor- combustion – regenerate the battery pack
bus – to engage the hybrid system the driver must flip an
operational switch on a separate hybrid driver interface panel on the dashboard
Hybrid bus battery pack service disconnect switch is loacated
on the outside of the pack and in clear view
drive train is a system that transfers rotational power from
the engine to the wheels
comm truck cab is make of a combination
steel aluminum and fiberglass
cab over truck - the cabe is lifter up over the engine and the drivers seat is
positioned over the engine and front axle
cab over engine was developed to
maximize cargo space and aid in the mobility of the vehicle itself
conventional cab drivers seat is
positioned behind the engine and front axle
conventional cab extends – to – feet from the front window
6 to 8
cab beside engine the driver sits next to engine and is is found mainly in
shipyards and baggage carriers within airports and seaports.
sleeper cabs are desisned with steel or aluminum ribs with an outer shell of
fiberglass or plastic molding consisting of a material known as Melton
cabs can be greater than —- feet above the ground
15
cab height require that you build several platforms of crosstie box cribbing 3 more
backboards and ladders. flatebed towing unit against truck
most air ride bellows are interconnected per axle and will
release air in all the bags sharing the same axle even if just one is damaged
live axles are ones that
transmit propulsion or cause the wheels to turn
dead axle is used for losd support and is commonly set
in front sections of tractor whe its function is for load support and steering also called steer axle
comm vech door the latching mech will usually consist of nader bolt and a latching device and
locks the Nader bolt at 2 points
service brake is the
normal driving brake used by the drivers to slow and stop
air brake or parking brake is used when fully stopped it bleeds
out compressed ari to hold back large springs located inside sealed chambers that release and lock the brakes in place
emergency brakes use
a combination of service and parking brakes
the ABS power cable going to the trailer is color coded
lime green
compressor stores aire at – to – when tank falls below —- the compressor will restart
120 to 125 —100
air brake on tractor connects to the trailer by a min of
2 air lines
trailer service air line is colored
blue
trailer emergency air line or supply line is colored
red
The couplers that supply air to the braking system of the trailer are called
glad hands
fuel tanks on CMV is usually aluminum but can be steel the rang in size from — to —-
50 to 150 gallons
federal haz mat transportation law 49 USC 5101 is a statute
enacted to regulate haz mat transportation in US
Dot pipeline and haz mat admin states there are——– dedicated CMVs to the transportation of haz mat —of gas and —-of explosives
400,000 180,000 of gas and 125,000 of explosives
MC 306/DOT406 gas or other flammable and combustiale mat. its shape is
oval
306/406 can carry between — to — gallons and had a working pressure between
6000 to 10,000 – 2.65 and 4 psi
DOT 407 flammable liquids is round if ——- and horseshoe shaped if —–
noninsulated and insulated
Dot 407 holds —- to —– and can have —- psi
6000 to 7000 and 35 psi
MC312/Dot 412 carry corrosives tank is indeneified by
several heavy duty reinforcing rings around the tank
MC312/Dot 412 holds —- and has a pressure of
6000 gallons 15 to 25
MC331 pressue caro tanker has a liquid volume from —- gal deliver truck to the ——- gall cargo tanker
1000 to 11000 gallons
MC 331 pressure haad —– ends tank is made of —- or —–
rounded - steel or stainless.
MC 331 pressure operates at around — psi with internal working pressures around —-
300 – 250 psi
tube tailers have pressures of — to —- psi
3000 to 5000
gross weight is
measurement of package plus contents
aggregate weight is
measurement that combines all the packages to determine the total weight of the haz
UN/NA identification numbers are given by the
United Nations Committee of Experts on the Transport of Dangerous Goods
National Agricultural Safety Database say — % or farm fatalities invilve tractors and —% are machine related
50 and 14
pinch points are created shen tow
objects move togather with one of then moving in a circle
Wrap points created when
A rotating machine component it exposed – powertake off
shear pints created when the edges of two objests move toward or next to each other –
closely enough to cut soft material - harvester
crush points created when tow objects move toward each other or when
one objest moves toward a stationary object - hitches
pull in point. points on a machine when an individual or object may
be pulled into the moving parts of machine. a clogged corn picker. occurs when person tries to remove plant mat that had become stuck
pressure in hydraulic lines is normally around —- lbs is the line gets a small leak the cressure coming through a pinhole sized home canexceed —-
1800 7000
power take off turns clockwise at — to 1000 rpm
540 –1000
ag accident.– the goals of initial stabilization are to make the scene safe for
further stabilization efforts and to gain access to the patient
ag accidents – the first concept of managing the stability of the tractor will be to
widen the stability baselines
on all tractor incidents the first effort once the scene is safe should
be to turn the key to the off position
the single most critical skill rescue personnel need to master is
effective cribbing
in tractor cribbing build a box crib of — blocks per layer instead of the normal of — the exra box will provide —- times the support and lifting capacity
3 – 2 – 2 1/4
type of wood blocks preferable for stabilization agg equip
rough cut
Picket system – “ roll steel rods –’ long driven in the ground –’ to —’
1 –4– 2to 3
picket system under good contions hold — pounds
700
what human condtion can dclined rapidly after the load or pressure is released
Hemodynamic
Defusing informal happens - to - hours after event lasts no more that – min
1 to 4 hours 45 min
CISD structured and confidential occurs 11 to 11 after event lasts – to —
12 to 72 hours 45 min to 60 min
tools for vehicle extrication can be broken down in 5 basic categories they are
hand pneumatic hydraulic electric or battery poerated fuel powered
stabalization tools can be classified 3
hand pneumatic or hydraulic
Standard on fire department operation and safety and health program
NFPA 1500
Standard on protective ensembles for technical rescue incidents
NFPA 1951
Normal verbal conversation between two individuals — decibles. Damage and hearing loss with prolonged exposure starts at decibel range greater than –
60 and 85
60 85
reciprocating saw measures — to — decibel level and hydraulic engine can measure — to 000
100-105 and 60 to 95
Standard on selection care and maintenance or protective ensembles for structral fire fighting and proximity firefighting
NFPA 1851
Hand tool cand be categorized as – 4
1 striking 2 leverage prying or spreading 3 cutting 4 lifting pushning pulling
chain load rating grades are embossed onto the chain links every
12 to 18 inches
chain sling is composed of a single or multiple chains, come in many sizes but commonly – to – ‘ utilize grade – or — chain
5 to 9 and 80 or 100
Filtration of air is monitored by
ANSI
The minimum air quality of grade – is used for air supply and respirators
D
Minimum air quality of grade – is used for dive operaions
E
Pneumatic reciprocating saws work like the electric ones and have saw speed ranging from — to — rpms
1600 to10,000
Pneumatic cutt off tools (wizzer saw - die grinder) use a use a —– —– cut off blade and rotate at speeds as high as
circular composite and 25,000
pneumatic cut off tool disc is usually –” in diameter and operates at no greater thatn – psi
3 and 90
pneumatic chisel utilizes an adjustable regulatior with a common range setting of – to —
0 to 300 psi gage on the regulator displays the bottle pressure and operating pressure
pneumatic chisel regulator can attach to either a —- or a —- air bottle depending on what it is rated for
2216 or 4500
air chisel can have a general operating pressure in the range of — to — and should never operate avove —
150 to 225 psi and 300
Air inpact wrenches have a general aire pressure setting of — and used standard and metric sockets
90 psi
several sizes of impacts but 1/2 inch should be fine had a torque range of — to —
180 to 325
3/4 “ inpact for heavy equipment — to — foot pounds of torque
750-1200
Rescue lift air bags are rated in—- and one metric ton equals —-
tonage 2240
Low pressure rescue lift bage provide a high lift with a man working pressure of
around 7 psi
Medium pressure rescue lift air bag not acommom More rugged design use a working air pressure of –
15psi
Medium pressure air bag have – to – cells and suitable for
2 to 3 aircraft medium or heavy truck or bus rescue and recovery
Low pressure air bags disadvantage are their lower lifing capacities and –
their thinner sidewalls makes them less stable when inflating
High pressure rescue lift air bags most comon. Working pressure of around — to —-
100 to 145psi
Air bag the is designed to retain their flar profile in the center as they are inflated
High pressure flat formrescue lift air bag
High pressure flat form rescue lift air bags
High pressure flat form air bags have and operating pressure of around — they have dimpled surface allowing bag to interlock also uses with side staps.
116 to 118 psi
New techology high pressure rescue lift air bags each rounded shaped bag can be locked together with a — —
threaded connector creating one bag with multiple cells
New Technology high pressue air bags have a distinct height advantage and use a working pressure of approzimately —
147 with the option of various height adjustments with the attachment of additional bags.
Electric nererators range in capacity from less that — wwatts to – watts and larger. DDepending on the size they provide out put of – to —
1000 to 75,000 120 to 240 volts
Junction boxes heavy duty and supplied with ground fault circuit interpreters or
GFI or GFCI and comply with NFPS 70E standard for electrical safety in workplace
Wher a generatior is large and does not have a plug and brekers distribution capabilities what is used
portable distribution panels
electric wench various pulling capacities from — to — pds
2000 to 12,000
Nfpa 1901 standard for automorive fire apparatus reqires the chassis mounted wenches to be graded with at least a —- pd pulling capacity and be remotely operated with at least —
6000 pd and a 25 fooot cord
wench pulling capacity schould be — times the GVW of the vechicle to be pulled
1.5
Led lighting ranges from 80 to over — per energy watt
100
conventional incandescent bulbs are around – lumens per energy watt and halogen lamps are around
15 lumens and 20 lumens per energy watt
A lumen measure a lights intensity and is equal to
on foot of candle power upon on square foot of area
Petrogen torches can cur trough – “ of steel with a flame temp around — degrees
14 and 5200
Oxyacetylene torch can cut trough – of steel with a flame temp of around –
12 and 5700
Oxygen propane orch offers slightly coolt temp around —
5112
Exothermic torch operates by
igniting a combustible metal contained with a tube where oxygen had been forced down the cente of the tube
