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Fire Hydrant and Water Supply Operations, Exams of Engineering

Edward Waters College (EWC)Engineering

Detailed information on various aspects of fire hydrant and water supply operations, including the proper placement and use of fire hydrants, the different types of water sources and how to access them, the measurement and management of water pressure and flow, and the equipment and techniques used in water supply operations. Topics such as the color-coding of fire hydrants, the minimum distance between a fire hydrant and the ground, the types of water pressure and how to measure them, the capacity and use of portable water tanks, and the proper procedures for using dry-barrel hydrants. The information presented in this document is highly relevant for firefighters, emergency responders, and anyone involved in the design and maintenance of water distribution systems.

Typology: Exams

2023/2024

Available from 08/27/2024

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FF1 - Chapter 14 - Pre-Test - Water
Supply Updated
A triple-layer hose load is finished with the nozzle:
A) on top at the front of the load.
B) under the hose load.
C) on top at the back of the load.
D) between the layers of hose load. - ANSWER-C) on top at the back of the load.
According to NFPA Standard 24, what is the minimum distance between the center of a
fire hydrant hose outlet and the finished grade of the ground around the hydrant?
A) Three feet
B) Thirty inches
C) Two feet
D) Eighteen inches - ANSWER-D) Eighteen inches
At the scene of a fire, a pump operator uses the difference between two types of
pressure to determine how many more attack lines or appliances could be operated
from the available water supply. What are these two types of pressure?
A) Flow and dynamic
B) Dynamic and static
C) Static and residual
D) Residual and flow - ANSWER-C) Static and residual
How close must a fire engine be to a static water source in order to be able to draft
directly from it?
A) There is no physical limit.
B) Within two hundred and fifty feet
C) Within fifty feet
D) Within twenty feet - ANSWER-D) Within twenty feet
How many gallons of water do fire department tankers usually carry?
A) 1000 or less
B) 1000 to 3500
C) 3500 to 6000
D) 6000 to 9000 - ANSWER-B) 1000 to 3500
If a portable tank is self-expanding, fire fighters may need to hold on to _______ while
the tank is being filled.
A) the frame
B) the check rope
C) the distributor
D) the collar - ANSWER-D) the collar
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FF1 - Chapter 14 - Pre-Test - Water

Supply Updated

A triple-layer hose load is finished with the nozzle: A) on top at the front of the load. B) under the hose load. C) on top at the back of the load. D) between the layers of hose load. - ANSWER-C) on top at the back of the load. According to NFPA Standard 24, what is the minimum distance between the center of a fire hydrant hose outlet and the finished grade of the ground around the hydrant? A) Three feet B) Thirty inches C) Two feet D) Eighteen inches - ANSWER-D) Eighteen inches At the scene of a fire, a pump operator uses the difference between two types of pressure to determine how many more attack lines or appliances could be operated from the available water supply. What are these two types of pressure? A) Flow and dynamic B) Dynamic and static C) Static and residual D) Residual and flow - ANSWER-C) Static and residual How close must a fire engine be to a static water source in order to be able to draft directly from it? A) There is no physical limit. B) Within two hundred and fifty feet C) Within fifty feet D) Within twenty feet - ANSWER-D) Within twenty feet How many gallons of water do fire department tankers usually carry? A) 1000 or less B) 1000 to 3500 C) 3500 to 6000 D) 6000 to 9000 - ANSWER-B) 1000 to 3500 If a portable tank is self-expanding, fire fighters may need to hold on to _______ while the tank is being filled. A) the frame B) the check rope C) the distributor D) the collar - ANSWER-D) the collar

In a well-designed water distribution system, which type of pattern do the water mains follow? A) Dead-end B) Dual C) Loop D) Grid - ANSWER-D) Grid Mobile water supply apparatus are often called: A) water tenders. B) engines. C) water wagons. D) portable hydrants. - ANSWER-A) water tenders. Portable tanks typically hold between: A) 100 and 1500 gallons of water. B) 500 and 2000 gallons of water. C) 600 and 5000 gallons of water. D) 1000 and 10,000 gallons of water. - ANSWER-C) 600 and 5000 gallons of water. Realistically, how many gallons per minute can a water shuttle deliver? A) Several hundred B) About one hundred and fifty C) Perhaps a hundred D) Less than fifty - ANSWER-A) Several hundred Sometimes the bonnet of a hydrant is color-coded. What do these color codes indicate? A) The size of the discharges B) Whether they are wet-barrel or dry C) Whether they have ANSI threads or SIMI D) The available flow from the hydrant - ANSWER-D) The available flow from the hydrant The flow or quantity of water moving is measured in: A) friction loss. B) kilopascals. C) gallons per minute. D) pounds per square inch. - ANSWER-C) gallons per minute. The required size of a water main is based upon the amount of water needed for normal consumption and: A) industrial needs. B) storage tank size. C) fire protection needs. D) business needs. - ANSWER-C) fire protection needs. To which type of water source does a dry hydrant provide access?

What is another term for head pressure? A) Static pressure B) Elevation pressure C) Flow pressure D) Residual pressure - ANSWER-B) Elevation pressure What is one of the three parts of a municipal water system? A) The recollection system B) The ionic separator lines C) The halogenation filter D) The treatment plant - ANSWER-D) The treatment plant What is the function of a soft sleeve suction hose? A) Connect a fire department engine to a standpipe B) Connect a fire department engine to a sprinkler system C) Connect a fire department engine to a water bladder D) Connect a fire department engine to a steamer outlet on a hydrant - ANSWER-D) Connect a fire department engine to a steamer outlet on a hydrant What is the most common size of fire hose outlets on fire hydrants? A) 1" or larger B) 1 ½" or larger C) 1 ¾" or larger D) 2 ½" or larger - ANSWER-D) 2 ½" or larger What is the recommended minimum pressure, in psi, for water coming from a fire hydrant? A) 115 B) 80 C) 50 D) 20 - ANSWER-D) 20 What is the term for the top of a hydrant? A) Discharge cap B) Cupola C) Bonnet D) Bell - ANSWER-C) Bonnet What is the top end of the capacity range, in gallons, of typical portable water tanks? A) 1500 B) 2000 C) 3500 D) 5000 - ANSWER-D) 5000 What is the usual range of pressure, in psi, at the delivery point in a water system? A) 50-

B) 40-

C) 20-

D) 10-90 - ANSWER-C) 20-

What must be done with a dry-barrel hydrant to ensure it drains fully? A) The discharge cap must be left off until it is drained. B) The main valve must be left cracked open. C) All discharge caps must be replaced and tightened air-tight. D) The air-bleeder nut must be re-tightened. - ANSWER-A) The discharge cap must be left off until it is drained. What must go on the end of the suction hose before it is placed in a portable tank for drafting? A) strainer B) A bipod C) A rope D) A diverter - ANSWER-A) strainer When color-coding fire hydrants, which color would the bonnet be on a hydrant flowing 1000-1499 gpm? A) Red B) Orange C) Green D) Light blue - ANSWER-C) Green When color-coding fire hydrants, which color would the bonnet be on a hydrant flowing 1500 gpm and higher? A) Red B) Orange C) Green D) Light blue - ANSWER-D) Light blue When color-coding fire hydrants, which color would the bonnet be on a hydrant flowing 500-999 gpm? A) Red B) Orange C) Green D) Light blue - ANSWER-B) Orange When color-coding fire hydrants, which color would the bonnet be on a hydrant flowing less than 500 gpm? A) Red B) Orange C) Green D) Light blue - ANSWER-A) Red

A) Pressure B) Flow C) Resistance D) Stream - ANSWER-B) Flow Which tool can remove burrs on hydrant threads? A) An IEEE tap B) A small triangular file C) A pipe wrench D) A small butane torch - ANSWER-B) A small triangular file Which tool is sometimes used to tighten hard suction hose connections? A) rubber mallet B) A dead-bounce maul C) A come along D) A turnbuckle - ANSWER-A) rubber mallet