IFSTA Numbers Flashcards
RPM Lower than Max that Should be used During a Steep Hill Descent
200 to 300 RPM
High Idle During Inclement Weather Seasons
900 to 1100 RPM
Idle Time Prior to Engine Shutdown
3 to 5 Minutes
Corrected Vision Requirements Set by NFPA 1582
20/40
Hearing Loss Where FF Candidates Should be Rejected Per NFPA 1582
40 Decibels
Minimum Pump Capacity Set for Fire Department Pumpers
750 GPM
Minimum Gallons Carred to be Considered Mobile Water Supply
1000 Gallons
______ or Greater Should Considered a Tandem Rear Axle or Greater Apparatus Design
1500 Gallons
Minimum Pump Capacity for Aerial Apparatus Per NFPA 1901
250 GPM @ 150 PSI
Standard Amount of Water that Rescue Pumpers Carry
500 Gallons
Standard Pump Capacity of Rescue Apparatus
500 GPM
Most Common Sized Electrical Cable for Fire Equipment
12g 3 Wire
Max Distance Between Power Unit and Hydraulic Tool
100 Feet
Percent of FF Related Injuries and Deaths Due to Vehicle Injuries
20 to 25%
Time Required to Get Oil Pressure Reading after Startup
5 to 10 Seconds
______ Times Longer it Takes to Stop on Snow and Ice
3 to 15 Times
Distance Between Responding Apparatus
300 to 500 Feet
Distance to Scan Ahead while Driving on City Streets
12 Seconds
Distance to Scan Ahead while Driving on Highways
20 Seconds
Collapse Zone =
1.5 x Building Height
Atmospheric Pressure
14.7
Energy Required to Convert 1 Gallon of Water into Steam
970 BTU
Times Water Expands at 212°F
1700
Weight of 1 Cubic Foot of Water
62.5 Pounds
Weight of 1 Gallon of Water
8.33 Pounds
Max Pressure Transfer Valve Should be Operated
50 PSI
Pressure Piping Systems are Hydro-statically Tested at
500 PSI
Minimum Flow from Tank to Pump on Pumpers with 500 GPM
250 GPM
Minimum Flow from Tank to Pump on Pumpers with greater than 500 GPM
500 GPM
Pressure Under Which Discharge Valves Should Operate
250 PSI
Pressure Change that Automatic Pressure Control Device should not Allow
30 PSI
Flow at which the Transfer Valve should be Switched to Volume
> 50% Capacity
Minimum Residual Pressure when Flowing from a Hydrant
20 PSI
Drop in Pressure = 3 Additional Lines May be Added
0 to 10% PSI
RPM to Properly Prime the Engine
1000 to 1200 RPM
Drop in Pressure = 2 Additional Lines May be Added
11 to 15% PSI
Drop in Pressure = 1 Additional Line May be Added
16 to 25% PSI
Amount of Water Needed Above a Strainer
2 Feet
Level that a Low Level Strainer may get to
2 inches
Temperatures that may Affect the Pump’s Ability to Run at Capacity
90°F
Time Required to Prime the Pump
10 to 15 Seconds
Pressure to Pump FDC
150 PSI
Proportioning for Class A foam with a Fog Nozzle
0.2 to 0.5%
Proportioning for Class A foam with an Air Aspirating Nozzle
0.3 to 0.7%
Proportioning for Class B foam to use on Hydrocarbons
3%
Proportioning for Class B foam to use on Polar Solvents
6%
Delay in Air Brake Activation
0.4 Seconds
Head Pressure for 1 PSI in Feet (Height)
2.304 Feet
