The National Fire Protection Agency (NFPA) states that a pumper is “[a] fire apparatus with a permanently mounted fire pump of at least 750 gpm (3000 L/min) capacity, water tank, and hose body whose primary purpose is to combat structural and associated fires.”
What is the main purpose of fire department pumpers quizlet?
provide adequate water pressure for effective fire streams. The main purpose of fire department pumpers is to: A. limit the need for external water sources.
What NFPA standard contains fire department pumper requirements?
NFPA 1901: Standard for Automotive Fire Apparatus.
What is the main purpose of any pump *?
A pump is any device meant to facilitate the motion of a fluid. Pumps displace fluids, causing it to move down or out of a pipe. Most pumps use some sort of compressional action to displace the fluid.
When in an acceleration skid the driver operator should?
When in an acceleration skid, the driver/operator should: not apply brakes, but should ease off the accelerator and straighten out the front wheels as the vehicle begins to respond. Which of the following statements about road tests is MOST accurate?
Which is the best description of pressure?
Pressure is defined to be the amount of force exerted per area. So to create a large amount of pressure, you can either exert a large force or exert a force over a small area (or do both). In other words, you might be safe lying on a bed of nails if the total surface area of all the nail tips together is large enough.
What makes a Class A pumper?
It states that during the 1940s, “national authorities” were contemplating a Class A pumper to deliver capacity at 150-psi discharge pressure, 70 percent at 200 psi, and half capacity at 250 psi-which is the basic requirement for today’s pumpers.
What is the NFPA do?
The National Fire Protection Association (NFPA) is a global self-funded nonprofit organization, established in 1896, devoted to eliminating death, injury, property and economic loss due to fire, electrical and related hazards. … NFPA membership totals more than 50,000 individuals around the world.
Which is a common size of hydrant outlet?
Most fire hydrants have two 2.5 inch hose connection outlets with 7.5 threads per inch (TPI) and one 4.5 inch-pumper connection outlet with 4 threads per inch.
What is pump and its types?
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps.