Fire Department Pump Operations

The video tutorial by Casey Gandy covers the hydraulics portion of a paddle class, focusing on essential formulas and practical applications for firefighting. It explains the pump discharge formula, friction loss calculation, and the importance of constant pressure pumping. The tutorial also discusses estimating additional water, understanding pump capacity, and the differences between forward and reverse lays. The goal is to equip firefighters with the knowledge to safely and effectively manage water pressure and flow during firefighting operations.

What is the primary goal of an engineer on the fire department during a fire scene?

• To operate the fire truck efficiently.

• To extinguish the fire as quickly as possible.

• To ensure the safety of the crew and supply nozzles with appropriate pressure.

• To manage the communication between the crew and the headquarters.

Which formula is used to calculate friction loss in a hose line?

• NR = 1.57 D² NP

• GPM = 29.7 D² √NP

• FL = C q²L

• PDP = NP + FL ± Elevation ± Appliance

What is the coefficient value for a two and a half inch hose line?

• 15.5

• 1.75

• 2

• 0.0505

How do you calculate the nozzle reaction for a fog nozzle?

• 1.57 times the diameter squared times the nozzle pressure

• 29.7 times D² √NP

• 0.0505 times Q times the square root of the nozzle pressure

• C q²L

When should you add appliance friction loss?

• When the flow is greater than 350 gallons per minute.

• When using a fog nozzle.

• When the flow is exactly 350 gallons per minute.

• When the flow is less than 300 gallons per minute.

What is the benefit of constant pressure pumping?

• It increases the pressure in the hose lines.

• It simplifies the calculation of friction loss.

• It allows for more water to be pumped.

• It reduces the need to adjust the throttle constantly.

What information is needed to use the estimating additional water chart?

• Static pressure, residual pressure, and gallons per minute flowing.

• Nozzle pressure, friction loss, and elevation gain.

• Pump capacity, hose diameter, and water temperature.

• Engine RPM, pressure mode, and hose length.

What is the rated pump capacity of Fort Worth fire department engines?

• 1000 gallons per minute

• 1500 gallons per minute

• 2500 gallons per minute

• 2000 gallons per minute

In which mode should the pump be set when supplying a manifold?

• Pressure mode

• RPM mode

• Flow mode

• Draft mode

Who gets the static pressure in a forward lay?

• The last engine in the relay

• The engine at the fire scene

• The manifold pumper

• The engine at the hydrant