Chapter 11 - Static Water Supply Sources Flashcards
What refers to the height a column of water may be lifted in sufficient quantity to provide a reliable fire flow?
Dependable lift
page 406
What type of water source may be placed within strategic locations by some suburban and urban jurisdictions as a backup water supply system?
Cisterns
page 415
Access to a natural water source is MOST likely to be impeded by:
the inability to position pumper close enough to the water
Which type of water source often has improved roads that lead to the water’s edge and may have dry hydrants installed for facility personnel or firefighters to use for water supply?
Ground reservoirs
A total vacuum is _____________ using fire service equipment.
impossible to create
page 404
During the process of drafting, the pressure in the intake hose and pump:
drops lower than atmospheric pressure.
page 404
Which type of water source may have open canals running through a property that may feature several sites suitable for drafting by fire department pumpers?
Agricultural irrigation systems
page 418
Which of the following refers to the greatest height to which any amount of water may be raised through an intake hose to the pump?
Maximum lift
page 404
What situation is most likely to make it necessary to position portable pumps at the supply source during drafting operations?
When fire apparatus cannot make required approach
page 411
When evaluating adequacy of smaller natural water sources, why should caution be used regarding their suitability as a water supply for fire fighting?
They may be more susceptible to fluctuations in adequacy during periods of drought than larger bodies of water
page 410
When at draft, the sum of the pump discharge pressure and intake pressure correction that takes into account friction loss in the intake hose and height of the lift is called:
net pump discharge pressure
page 407
Which water source is the fire department most likely to require the owner to equip with appropriate connection points for fire department use?
Private water storage tank
page 415
What do some jurisdictions do to help avoid problems with silt and debris?
Install dry hydrants at favorable drafting locations
page 412
Maximum lift at a given altitude will be:
less than theoretical lift
page 404
Which would be the MOST likely concern after traversing frozen ground in order to reach a drafting site?
Thawing may occur from an increase in air temperature
page 411
