TB 151 - Progressive Hose Lay and Smokey Pack Flashcards
The progressive hose lay is the METHOD in which the desired TECHNIQUE to suppress a brush or grass fire in the Wildland/Urban Interface is accomplished.
The technique to suppress brush/grass fires involves:
COMPLETE containment and control and mop up of the fire through PERIMETER CONTROL
What two LAFD methods are used for deploying brush hose?
-Simple Hose Lay
-Progressive Hose Lay
The SIMPLE Hose Lay is a CONTINUOUS line being advanced around the fire with NO JUNCTIONS in between.
Advantages and disadvantages:
Advantages:
-MINIMAL FRICTION LOSS due to minimal fittings
Disadvantages:
-to extend with additional hose, water flow must be stopped
-no safety line if flare up occurs behind nozzleman
-difficult to use in mop-up due to length of hose lay
_______ and _______ remain the standard method for advancing hose in the Simple Hose Lay.
-Wet Line/Dry Line
-A Continuous Line
Which method of deploying brush hose is very effective for SMALL FIRES in grass and light brush?
-Simple Hose Lay
(1” or 1½” double jacketed attack lines may be used)
A Progressive Hose Lay is a hose lay that starts from the supply source and PROGRESSES along the perimeter of the fire. It uses a continuous application of water while extending the lay and allows for a series of lateral junctions at _____ ft intervals
100 ft
Progressive Hose Lay:
The main line being “progressively” extended around the entire perimeter of the fire is referred to as the ______.
Trunk line
Progressive Hose Lay:
- Each junction will have a 1” line with a 1” nozzle attached and be connected to a 1½” gated wye through a 1½” to 1” reducer, referred to as a ________.
- What type of 1” nozzle (GPM) is attached?
- LATERAL
- 10/40 Dual Gallonage 1” nozzle
Progressive Hose Lay advantages and disadvantages:
Advantages:
-continuous water
-safer for direct attack due to laterals for flare ups
-1” attack line increases speed and decreases work load
-easier for steeper topography
-multiple attack lines on spot fires
-efficient in mop-up
Disadvantage:
-higher FRICTION LOSS due to fittings (5-10psi each)
What method of deploying brush hose is preferred to support hand crews constructing line?
Progressive Hose Lay
Policy when using a Progressive Hose Lay to provide for perimeter control:
Companies shall utilize a minimum of 1½” hose line for the trunk line and a 1” hose line for the _____ and ______ lines.
attack and lateral lines
Each drop of a Progressive Hose Lay shall consist of the following:
•100’ 1½” Single Jacket Hose (Minimum size for the trunk line)
•100’ 1” Single Jacket Hose (Attack and lateral line)
•1½” Gated Wye with one 1½” to 1” Reducer
•1” Nozzle (10/40 Dual Gallonage)
•(2) Rubber Bands OR ladder straps to secure gates.
A Company given the task of establishing a progressive hose lay is expected to, at a MINIMUM, be able to put in how many drops?
3 drops
The ______ Pack Lightweight Hose System is a pre-assembled pack of single jacket lightweight hose, which allows rapid deployment of packs and extension of line with an uninterrupted supply of water.
Smokey Pack
A company compliment of Smokey Packs will consist of 4 complete packs and one Starter Roll.
Each Smokey Pack weighs approximately 26 lbs. and shall contain the following:
(1) - 100’ section of 1” single jacket lightweight hose
(1) - 100’ section of 1½” single jacket lightweight hose
(1) - 1½” lightweight gated wye
(1) - 1½” to 1” reducer
(2) - 1” Forestry adapter (NST to NPT and NPT to NST) white for identification
(1) - 1” nozzle (10/40 Dual Gallonage)
(1) - 1½” nozzle (18/80 Dual Gallonage, 1 Per Company)
(1) - Backpack
(2) - Rubber bands
Smokey Pack Starter Roll Components:
(1) - 100’ section of 1” single jacket lightweight hose
(1) - 1½” lightweight gated wye
(1) - 1½” to 1” reducer
(1) - 1” nozzle (10/40 Dual Gallonage)
(2) - Rubber bands
In addition to the four complete Smokey Packs and one Starter Kit, each Company will also receive one compliment of hose consisting of?
-400’ of 1” lightweight hose
-400’ of 1½” lightweight hose.
(This is extra hose stored at the station)
Smokey Pack Assembly:
“24 inches male back from female coupling”
“Secure hose every 8-10 ft”
Smokey Pack Starter Roll Assembly:
24” to start!
To start a progressive hose lay with the Smokey Pack:
Pull 1¾” or 1½” hose from the transverse bed. Remove tip from complete spray nozzle and replace with the _______ nozzle.
1½” 18/80 Dual Gallonage nozzle
Forestry adapters, 1”, National Standard Thread (NST) to National Pipe Thread (NPT) and NPT to NST shall be painted _____ for identification.
white
Due to its lightweight construction, brush hose is easily damaged. It is recommended that hose testing be performed on _____ or _______.
grass or light fuel bed
(Dragging the hose on concrete or asphalt during training, hose testing, packing or rolling for storage will cause damage to the outer jacket leading to leaks in the hose)
Progressive Hose Lay
The trunk line will be a minimum size of _____.
1-1/2”
Assembling the Smokey Pack
The first step to assemble a Smokey Pack is to lie out 100’ section of 1” hose and fold in half, with the male ON TOP, placed ____ inches behind the female coupling.
24”
Smokey Pack Lightweight Hose System states that the service test pressure for this hose is ______ psi.
300 psi
It is the Policy of the LAFD that when using a Progressive Hose Lay to provide for perimeter control, companies shall utilize ___________.
Minimum of 1½” hose line for the TRUNK line
1” hose line for the ATTACK and LATERAL lines.
