apparatus operator Flashcards
firefighter injuries from accidents annually
1000-1300
civilian injuries annually from firefighters driving
deaths?
650
20 to 30
percent of firefighter deaths because of driving
33%
what percent of crashes result in rollovers?
collisions at intersections
20%
60%
two major causes of accidents
lack of forethought
speed
number one cause of collisions
human error
5 Keys to the Smith safe driving system
aim high in steering
get the big picture
keep your eyes moving
leave yourself an out
make sure they see you
total stopping distance takes into account what?
perception time
decision reaction time
air brake lag
braking distance
how do you calculate travel distance (reaction distance) 3/4 second
add the first digit of your speed to your speed
ex. 55mph 55+5=60 feet per 3/4 second
when the vehicle speed doubles the destructive force does what?
four times the force
following distance in seconds?
how many seconds following distance do you add when driving code 3?
4
1 second
keys to accident avoidance
recognize a hazardous situation
formulate a defense
act in time to avoid the accident
belt tension
no more than 3/4”
what percent of leaf springs can be broken cracked of missing?
25% or less
last notch on the brake pad wear tab
1/4”
angle of slack adjuster when brakes applied?
90 degrees
how much slack on adjuster when pulled ?
1 inch
tire cuts not to exceed
1 inch
tire inflation on type 1
100-120
tread depth front tires
4/32
rear tire tread depth
2/32
are re tread tires allowed?
on non steering axels
what two types of tires on rear?
radial or bias
normal volt range
12 to 14
normal water temp
170-210
normal oil pressure
35-75
normal trans temp
below 250
steering wheel play
10 degrees or 2 inches in 20” wheel
Air Brake Pneumonic
Gov cut out
Gov cut in
Static
Applied
Low air
Pop out
Air recovery
Tug
max cut out
130
max cut in
85
static air test max drop
no more than 2 psi in 60 seconds
applied air test max drop
3 psi in 60 seconds
low air warning
55-75
pop out
20-45
max time for air recovery
45 seconds
to go from 85 to 100 psi
at high idle 1200rpm
tug test emergency brake
pull up chock fasten seat belt and press accelerator
tug test service brakes
press brake
release parking brake
with hands off steering wheel apply brakes.
note any movement of wheel
what NFPA code does the daily and weekly cover
1002
daily done before when?
how long should it take
830
15-20 min
pump discharge at idle
50 psi
weekly should take how long?
1-2 hours
equipment ran on weekly for a minimum of
5 minutes
monthly inspection items
do these when
drain tank flush pump
clean all compartments
clean engine and pump
clean interior
wax apparatus
extended maint on equipment
2 or so on each weekly
apparatus repair types
non emergency
emergency
6 month service level
12 month
24 month
d
e
f
per the app manual where can we find out about repairs that were done to a vehicle or when the service is due
county vehicle ops website
how much longer does it take to stop on wet or icy pavement?
3-15 times longer
type 3 weight
33000 lbs
water tender 22 and 32 weight
31,000
on type 3 shifting from high to low does what?
cuts axel speed in half and doubles torque
how fast can you travel when engaging front axel on type 3?
below 10 mph
how do you switch to low or hi?
stoped with trans in neutral and brake set.
calculating slope?
rise/run x 100 =% of slope
45 degree slope=
100% slope
roughly
1% = 1/2degree
max slope for a brush truck up or down
35-40%
or
22-25 degrees
side slope
use caution after
side slope max
tilt table tested up to ?
15 degrees
25 degrees
31 degrees
water weights how much per gallon
8.35
airing down to 30 psi increases the footprint how much percent
65%
length of tow chain on type 3
what size ?
breaking strength
20 ‘
3/8
19,800
collapse zone size?
1 1/2 the height
parallel batts do what?
series does what?
increase amps
increase volts
rotor size on KME
17 “
rear brake type on type 1
drum with s cam automatic slack adjuster
generator output
1500 watts
5 componets of the air brake system?
compressor
air tank
foot valve
brake chambers
brake drums and rotors
pump rated at
500 gpm at 150 psi
brush truck foam pump?
foam pro .1-1%
water tender 18 weight
64000
nfpa 1901
standard for automotive apparatus
nfpa 1911
standard for maintenance and service of fire apparatus
C
O
L
A
pop
Cut in 85-100
Out 130
Low air 50-75
Applied pressure 3 psi in 60 seconds
pop 20-45
