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Tactical use of fire hydrants
Terms in this set (19)
Author? Written when? Published where?
Andrew A Fredericks
Single most effective life saving action a fire dept can perform?
Prompt control and extinguishment of a serious fire.
What article discusses hydrant nomenclature, features, and applicable standards?
The fire hydrant by Paul Nussbickel Jan 1989
Limitations on effectiveness of hydrants can be divided into 3 categories:
1. Inadequate inspection and maintenance by water authority or fire dept.
2. Limited size and advanced age of water mains supplying hydrants, reduction in volumes of water
3. Unauthorized use and vandalism that render hydrants inoperable.
Who discusses knowledge of water mains, flow test data, and pre incident planning and engine ops?
Glenn P Corbett, fire engineering dec 1991
What hydrants must be identified to prevent operational difficulties and inadequate flows?
Hydrants supplied by smaller than 6 inch mains, and that flow less than 500 GPM.
On dead end mains, require special fittings, have only 2 1/2 outlets, have inoperable drains.
Most common problems that result from poor inspection and maintenance?
Caps difficult to remove
Operating stems that are inoperable or damaged severely
Hydrants that cannot be shut down after ops finish
Buried by snow and ice
Frozen barrels in cold due to improper draining
Who inspects hydrants?
Water authority, fire department should perform their own inspections
Key points for safe way to test and flush hydrants
Ensure hydrant caps securely in place, ensure hydrant closed before removing caps
Remove cap from largest outlet and flush to remove debris or rocks
Tighten other caps to prevent caps flying off, or leaks.
Always stand behind hydrant, out of way of outlets.
How far do you open hydrant? and proper flush technique?
Open Several turns, wait momentarily, then close hydrant until discharge fills 1/2 of the outlet.
What 2 types of problems could drivers encounter with hydrants?
Actual acts of vandalism
Worn by unauthorized use
Types of anti vandalism devices?
Device to prevent removal of caps
2nd device to protect operating but from unauthorized use
2 Basic Ways single engine company can establish water supply
What are disadvantages of the forward lay (water to fire)?
Member is left at the hydrant
If hydrants are spaced more than 500ft apart, supply hose friction loss can substantially reduce volume of water sent.
With the engine located close to the fire building, truck and ladder companies might not be able to have the best spot.
What are disadvantages of reverse lay (fire to water)?
Apparatus based master streams (deck guns) would be unavailable
Long hand line lays needing high pump discharge pressures.
Preconnects will no longer be available
Advantages of reverse lay?
Leaves front open for truck and ladder
Efficient use of personnel
Better utilization of available water supply( engine @ hydrant)
What is biggest problem with preconnected hand lines?
One size fits all approach to every fire
For high degree of tactical flexibility, how should hose loads be setup on each engine?
For both forward and reverse lays
Major advantage in using 2 engine companies to establish water supply?
Positioning first due engine near fire building for rapid deployment of preconnected hand lines. Second engine would relay water to first due engine.
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