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;
48 Cards in this Set
- Front
- Back
- 3rd side (hint)
one cubic foot of fresh water
|
62.5 lbs
|
|
|
one gallon of fresh water
|
8.35
|
|
|
one psi will raise water
|
2.304 feet
|
one psi will raise water one michael jordan 23 or 2.304
|
|
how many gallons does one cubic foot of water contain
|
7.48 gallons
|
|
|
240 gallons of h2o
|
one ton
|
|
|
1 perfect vacuum is
|
29.92 inches of mercury
|
|
|
atmoshperic pressure at sea level is
|
14.7 psi
|
|
|
you loose aprox .5psi per
|
1000 feet of elevation
|
|
|
altitude
|
position of an object aboe or below sea level
|
|
|
elevation
|
center line of pump of the bottom of a static h20 supply source above or below ground level
|
|
|
static pressure
|
potential energy available to force water through pipes, fittings , hose and adapters
|
|
|
head pressure
|
result of dividing number of feet that water supply is above discharge orifice by 2.304
|
|
|
head
|
the height of water supply above the dischage orifice
|
|
|
perfect vacuum
|
absolute pressure
|
|
|
vacuum
|
any pressure less than atmosphere pressure
|
|
|
psia
|
pounds per sq in - psi above a perfect vacuum
|
|
|
psig
|
guage readings
|
|
|
dependable lift
|
height a column of water may be lifted in sufficient quantity to provide a reliable fire flow 14.7'
|
|
|
theoretical lift
|
vacuum that allows water to be raised by atmospheric pressure to a height in accordance with this pressure
33.8' |
|
|
EP =
|
EP = NP + FL + BP
|
|
|
FL = (
|
FL = (2Qsquared + Q) K per 100' of hose for 100 GPM or more
FL = (2Qsquared + 1/2Q) K per 100' of hose for 100 GPM or less Q = GPM flow divided by 100 GPM = 29.7 x D squared x square root of nozzle pressure x .9 |
|
|
pressure = ?? x Height
|
pressure = .434 x height
|
|
|
height = ?? x pressure
|
height = 2.304 x pressure
|
|
|
K factors for 1", 1.5" 1 3/4", 2.5", ad 3"
|
1" = 91
1.5" = 13 1 3/4" = 4.5 2.5" = 1 3" = .4 |
|
|
tip size and gpm
|
1 1/4" = 400
1 3/8" = 500 1.5" = 600 1 5/8 = 700 1 3/4 = 800 1 7/8" = 900 2" = 1000 |
|
|
constant flow
|
designed to flow a specific amount of water at a specific nozzle discharge pressure on all stream patterns. most are periphery deflected. special application such as high rise FF
|
|
|
Task force tips are
|
automatic nozzles,
|
|
|
automatic nozzle
|
type of common ariable flow nozzle aka constant pressure nozzle or multipurpose nozzle. variable flow wih pattern change capabilities to maintain the same nozzle pressure.
|
|
|
TFT master stream
|
constant pressure, variable flow, automatic.
|
|
|
manually adjustable nozzle
|
a refinement of constant flow nozzle. a number of constant flow settings, enabling the FF to select a flow rate
|
|
|
portible monitor cannot go past
|
35 degrees
|
|
|
ladder nozzle lateral movement
|
15 degrees???
|
|
|
K factors
|
1” 91 cotton jacket
1 ½” 13 cotton jacket 1 ¾” 4.5 synthetic 2 ½” 1 cotton jacket 3” .4 or 2/5 cotton jacket |
|
|
H =
|
H = 2.304P
|
|
|
P =
|
p=.434H
|
|
|
GPM formula
|
GPM = 29.7 x D² x square root of nozzle pressure
D = the diameter If the opening is anything other than a smooth bore nozzle use: GPM = 29.7 x D² x square root of nozzle pressure x .9 For mental work substitute 30 for 29.7 |
|
|
WAP SQ 17AE
|
SPECIFICATIONS
Water Pick-up 25 gpm Water Discharge 60 gpm Water Lift 90 inches Tank Volume 17 gal Weight 56 lbs. Discharge hose should be at least 1 ½” inner diameter |
|
|
foldatank 3000 gal
|
“Fire Dept” 3000 US gallons 75 lbs. (Dry) 2 ft. 8 in (Height)
(#SSTFD-3000) 13 ft. Dia. (Top) 14 ft. 9 in. Dia. (Bot) |
|
|
AFFF
|
1500 to 1800 square feet when applied at a depth of about 1/2” to 1”.
|
|
|
Positive-Pressure Ventilation
|
a. Increases visibility.
b. Reduces smoke and heat. c. It if is not possible to set up PPV prior to starting fire attack, then set up as soon as possible 3' to 6' from door opening should be should be 75 to 200% of the size of the intake opening |
|
|
Helicopter Protocol
|
1. Contact emergency communications center.
2. Give a callback telephone number. 3. Give location of accident or scene. a. Give Thomas Brother’s map page and coordinates. b. Specify edition and County. 4. Give radio frequency for contact at accident or scene. 5. Give radio call sign (incident command designation). a 75’ square landing zone, 125’ square in high winds night 125' |
|
|
helicopter landing procedures
|
Weather Conditions Considerations.
1. Helicopters fly under Visual Flight Rules (VFR). a. 1,500’ visibility b. 600’ ceiling 2. Helicopter may be requested under light rain or fog conditions. Landing Procedures. 1. Assign one Firefighter to direct the helicopter landing. a. Take a position at the landing zone perimeter. b. Wind to back. c. Arms extended parallel to ground. |
|
|
Landing Zone Safety Rules.
|
No smoking or running within 50’ of landing zone.
No vehicles, fire, police or ambulance equipment is to be driven within 50’ of landing zone |
|
|
discharge head
|
the pressure measured at the discharge outlet of a pump
|
|
|
total head
|
or total dynamic head is the max height above the source of supply to which it would elevate the water plus all resistance to flow in pipes or hose
|
|
|
velocity head
|
equivalent pressure represented by fluid in motion as measured by means of a pitot gauge
|
|
|
total suction lift
|
static lift plus friction in suction line plus entrance losses
|
|
|
max theoretical lift
|
34 feet, which is the pressure of the atmosphere at sea level. max practical lift at sea level is 20 to 25 feet.
|
|