Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
89 Cards in this Set
- Front
- Back
NFPA standard for Fire Apparatus Dirver/Operator Professional Qualifications.
|
NFPA 1002
p.3 |
|
NFPA standard for Automotive Fire Apparatus
|
NFPA 1901
p.8 |
|
NFPA states that the minimum pumping capacity for a fire pumper is...
|
750 GPM
p.8 |
|
NFPA Standards for building industrial foam pumpers
|
NFPA 11C
p.9 |
|
NFPA 1901 states a Mobile Water Supply Apparatus must carry at least __________ gallons of water.
|
1000 gallons
|
|
Standard for Fire Department Occupational Safety and Health Program.
|
NFPA 1500
p13 |
|
Standards for Wildland Fire Apparatus
|
NFPA 1906
p14 |
|
What does ARFF stanf for?
|
Aircraft Rescue and Firefighting
p14 |
|
Standard for Aircraft Rescue and Fire Fighting Vehicles.
|
NFPA 414
p14 |
|
What five items must a quint contain?
|
-Aerial Device
-Ground Ladders -Fire Pump -Water Tank -Fire Hose p16 |
|
Static Pressure
|
Pressure exerted in all directions at a point at rest
|
|
Residual Pressure
|
Pressure remaining in a water system while water is flowing
|
|
Flow
|
Forward velocity pressure at a discharge opening when water is flowing
|
|
Normal Operating Pressure
|
Pressure found in the water distribution system during normal consumption demands
|
|
Negative Pressure
|
Vacuuum - Pressure that is less than atmospheric
|
|
Displacement
|
Movement of a given amount of fluid w/ each stroke of a pump
|
|
Head Pressure
|
Water pressure due to elevation
0.434psi/foot |
|
Hydrant Pressure
|
Force of water when it enters the pump from the distribution system
|
|
Net Engine Pressure
|
The actual amount of pressure being produced by the pump
|
|
Nozzle Reaction
|
Counterforce
|
|
Compound Pressure
|
Gauge capable of measuring both negative and positive pressure
|
|
Name 3 types of positive pressure pumps
|
Piston pump
Rotary gear pump Rotary vane pump |
|
Name 3 types primers used to prime centrifugal pumps which are not self priming
|
Positive displacement pumps
Exhaust primers Vacuum Primers |
|
Name 4 types of retarders used on fire engines
|
exhaust
engine hydraulic electric |
|
GPM formula
|
29.7*nozzle diameter in decimals squared*the square root of nozzle pressure
|
|
Friction Loss formula
|
C*Q2*L
|
|
1" hose coefficient
|
150
|
|
1 1/2" hose coefficient
|
24
|
|
1 3/4" hose coefficient
|
15.5
|
|
2 1/2" hose coefficient
|
2
|
|
5" hose coefficient
|
0.08
|
|
Solid Stream handline operates at ____ PSI?
|
50PSI
|
|
A solid bore master stream operates at ____ PSI
|
80 PSI
|
|
Most Automatic and Constant Flow nozzles are designed to flow at _____ PSI
|
100 PSI
|
|
Generally, ____ is the maximum amount of water that can safely flow through a handline.
|
350 GPM
P.131 |
|
Master stream flows are generally ____ GPM or greater.
|
350 GPM
P.131 |
|
Cellar, piercing and chimney nozzles usually operate at _____PSI
|
100psi
P136-137 |
|
Newton's third law of motion.
|
For every action there is an equal and opposite reaction.
P.136 |
|
Calculation for nozzle reaction in a solid bore nozzle
|
1.57*(D*D)*NP
P.137 |
|
Calculation for nozzle reaction in a Fog Stream nozzle
|
NR=0.0505*Q*(NP square root)
P.137 |
|
Rule-of-thumb for NR for Solid Bore nozzles
|
Q/3
P.137 |
|
Rule-of-thumb for NR for Solid Bore nozzles
|
Q/2
P.137 |
|
How many gallons of water are in a cubic ft.
|
7.5 gal
|
|
Rectangular pool calculation for capacity in gallons
|
L x W x D x 7.5gal
p308 |
|
Round pool/tank calculation for capacity in gallons
|
pi x (radius squared) x Depth x 7.5gal
|
|
The smallest accepted standard for the size of a water main is ____.
|
8 inches
|
|
How many gallons are in a tank with a radius of 15' and 30' long.
|
158,962.5
|
|
How often should the motors on a small engine (saw, generator etc.) be started?
|
Weekly
|
|
How often should apparatus fluid levels be checked?
|
Daily
|
|
What is the smallest acceptable size of a water main, for a hydrant bell to be connected?
|
6 inch
|
|
What type of metal are the mechanical parts of a hydrant made of?
|
Bronze
|
|
If you relay pump the pumper with the greatest capacity should be placed were?
|
At the supply source
|
|
Atmospheric pressure at sea level
|
14.7
|
|
How many GPM will a 1" solid bore tip flow at 50PSI?
|
200gpm
LFD |
|
When drafting your screen should be _____ inches from the surface.
|
24
|
|
What is the MAXIMUM realistic lift that can be obtained while drafting.
|
20ft
|
|
When measuring lift distance while drafting you measure from the ______ of the water the _____ of the pump.
|
Surface, Middle
|
|
Why should hydrant be turned completely on when being used, even if minimal GPM is required?
|
Because the drain does not completely close and can cause erosion.
|
|
How much elevation loss would you experience on a 100ft tall building?
|
50 PSI
|
|
How much friction loss do you add for a standpipe?
|
25 PSI
LFD |
|
What is the nozzle reaction of a 2' solid bore nozzle 80 PSI on
|
NR=1.57 x nozzle diameter x NP
NR=1.57 x 2 x 80 NR=251.2 pounds |
|
When using brakes, the anti skid device reduces pressure on which brakes, front or rear?
|
Front
|
|
What is relay pumping?
|
Using two or more engines to move water a long distance.
|
|
What is tandem pumping?
|
When one pumper boosts the second pumper to boost pressure.
|
|
What is dual pumping?
|
Two pumper use the same supply hydrant
|
|
What type of pump is the most commonly used in the fire service?
|
Centrifugal
|
|
Name two types of positive displacement pumps.
|
Rotary
Piston |
|
1 inch of water 1 foot deep produces ____PSI
|
0.434 PSI
|
|
1 PSI will lift 1 sq inch of water _____ high.
|
2.304 ft
|
|
A transfer valve in the series position will increase the pressure or the volume of water delivered?
|
Pressure
|
|
Device which changes engine speed to compensate for changes in flow?
|
Governor
|
|
How often should vehicle air tanks be drained?
|
Weekly
|
|
Formula for calculating fire flow needed to fight fire in a structure?
How much needed for exposures? |
(L x W)/3 and adjust for % of building involved.
Add 25% for each exposure. |
|
Theoretical MAXIMUM lift of water in a perfect vacuum.
|
33.95 ft
|
|
What are the colors used for hydrants and their corresponding flows
|
Blue = 1500 GPM or greater
Green = 1000-1499 GPM Orange = 500-999 GPM Red = 499 GPM or less |
|
What class of foam is mixed at 0.1%-1%
|
Class A
|
|
What are the percentages used to classify whether detergent foam is low, medium or high expansion?
|
2-20:1 = Low
20-200:1 = Medium 200-1000:1 = High |
|
Foam eductors use what principle to draw foam into a water stream?
|
Venturi
|
|
What are three foam application techniques?
|
Roll in
Bounce off Rainfall |
|
Three categories of preventative maintenance?
|
Routine
Schedule Corrective |
|
Air horns stop working at ____PSI
|
80
|
|
Brake warning buzzer goes off at ____PSI
|
60
|
|
Brakes auto engage at ____PSI
|
40
|
|
What are the three levels pumpers are tested at and for how long?
|
100% test at 150 PSI for 20min
70% test at 200 PSI for 10min 50% test at 250 PSI for 10min |
|
What is the dry vacuum test?
|
Pull primer valve and draw 22mmHg. Vacuum shall not drop more than 10mmHg in five minutes.
|
|
NFPA Standard for service test of pumps
|
NFPA 1911
|
|
NFPA Standard for ground ladder testing
|
NFPA 1932
|
|
NFPA Standard for fire hose testing
|
NFPA 1962
|
|
NFPA Standard for fire flow testing and marking of fire hydrants
|
NFPA 11
|