Operational Guideline 5.27 Water Supply Flashcards
Who is responsible for securing a water supply or assigning the task to another engine company?
The first arriving engine officer
Engines arriving after the first due should?
Level 1 stage on a hydrant in their direction of travel. announce their arrival and location on the talk group.
Hose lays greater than _____ should be reported to ____________
600 feet
IC
Water supply assignment is complete when?
All hose lines have been charged and water is flowing tp the FA engine.
Consider a water supply group supervisor when
2 or more water supply sources are used.
The water supply officer reports to who?
The IC
The fire branch manager
Operations section chief
Who would coordinate a mobile water supply?
water supply group supervisor
IF the closest or best hydrant is not in the direction of travel for the first arriving engine. They may consider what?
starting fire attack with tank water.
When laying supply hose in the street would block the first due truck, consider ____________
starting fire attack with tank water
When operating from tank water (booster tank) lines are limited to _________
(2) 1/3/4 or (1) 2 1/2
What are some reasons to use tank water from more than one engine for initial fire attack
Distance from hydrant
frozen or damaged initial hydrant
car fires
leaving 20 PSI on the intake pressure prevents what?
pump cavitation
What color and what pressure are high pressure hydrants?
Blue, up to 350 psi
A hydrant with a black bonnet indicates what?
low pressure hydrants, possible 4” main
Possible thread type on a hydrant ?
NFPA thread
“Portland thread”
decision to lay a single or double header is not solely based on what?
size, type or occupancy of the building. when in doubt lay double
Relay pump when
more than 300 feet from the supply to the pumping engine
What is the target GPM for a single header?
700 gpm
what is the target GPM for a double header?
1400 GPM
When possible, the last arriving engine on a first alarm shall park their apparatus where?
on the hydrant that supplies the companies for fire attack
