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Transcript of Fire Service Hose Firefighter II. Copyright and Terms of Service Copyright © Texas Education...
Fire Service HoseFirefighter II
Copyright and Terms of Service
Copyright © Texas Education Agency, 2011. These materials are copyrighted © and trademarked ™ as the property of the Texas Education Agency (TEA) and may not be reproduced without the express written permission of TEA, except under the following conditions:
1) Texas public school districts, charter schools, and Education Service Centers may reproduce and use copies of the Materials and Related Materials for the districts’ and schools’ educational use without obtaining permission from TEA.
2) Residents of the state of Texas may reproduce and use copies of the Materials and Related Materials for individual personal use only, without obtaining written permission of TEA.
3) Any portion reproduced must be reproduced in its entirety and remain unedited, unaltered and unchanged in any way.
4) No monetary charge can be made for the reproduced materials or any document containing them; however, a reasonable charge to cover only the cost of reproduction and distribution may be charged.
Private entities or persons located in Texas that are not Texas public school districts, Texas Education Service Centers, or Texas charter schools or any entity, whether public or private, educational or non-educational, located outside the state of Texas MUST obtain written approval from TEA and will be required to enter into a license agreement that may involve the payment of a licensing fee or a royalty.
Contact TEA Copyrights with any questions you may have.
2Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Service HosePart I
Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hoses
• Manufactured in different diameters, each for a specific use.– Usually cut and coupled
in lengths of 50 or 100 feet, but longer lengths are available
– Referred to as lengths or sections
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Fire Hose Construction
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Intake Hose
• Intake hose – used to connect fire apparatus to a water source
6
• Soft intake hose or soft sleeve hose– Used to transfer water
from a pressurized source to the pump intake
– 2½ inches to 6 inches in diameter
Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Intake Hose (continued)
• Hard intake hose or hard suction hose– Primarily used to draft water
from a static source– Can be used to siphon water
from one portable tank to another in water shuffle operations
– Has a steel core (helix) to prevent it from collapsing when drafting
– 2½ to 6 inches in diameter7Copyright © Texas Education Agency 2011. All rights reserved.
Images and other multimedia content used with permission.
National Fire Protection Agency (NFPA) Standards
• NFPA 1961 – Standard on Fire Hose• NFPA 1963 – Standard for Fire Hose Connections (couplings
and threads)• NFPA 1901 – Standard for Automotive Fire Apparatus
– Requires pumpers to carry:• 15 feet of large soft intake hose or 20 feet of hard intake hose• 800 feet of 2½-inch or larger fire hose• 400 feet of 1½-, 1¾-, or 2-inch attack hose
– The lengths and sizes may be increased, depending on departmental needs.
8Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Damage
• Mechanical damage• Covering damage
(rips, slices, abrasions)• Crushed or damaged couplings• Cracked inner linings• Damage prevention
– Don’t pull over rough or sharp edges or objects.– Use hose ramps (bridges) to protect hoses from being run over.– Open and close nozzles, valves, and hydrants slowly.– Change fold positions when reloading hose on apparatus.– Use chafing blocks to prevent abrasions when hose vibrates at or near the
pumper.– Avoid excessive pump pressure on the hoselines.
9Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Damage (continued)
• Thermal damage– Caused by excessive heat, direct contact and
sunlight– Damage prevention
• Protect hoses from exposure to excessive heat.• Don’t allow hoses to remain in a heated area once dry.• Use moderate temperatures for mechanical drying
(warm air is much better than hot air).• Keep the outsides of woven-jacket hoses dry when not
in use.
10Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Damage (continued)• Thermal damage
– Damage prevention (continued)• To keep the liner soft, run water through a hose that has not been
used.• To keep the liner from drying out, roll dry hoses in a straight line
for storage.• Prevent hoses from coming in contact with vehicle exhaust.• Use hose bed covers on apparatus to protect hoses from the sun.
11Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Damage (continued)
• Organic damage– Woven jacket hose
• Cotton or other natural fibers• Subject to mildew and mold
– Damage prevention• Don’t keep wet hoses loaded on apparatus.• Inspect, wash, and dry hoses that have been contaminated• Remove, inspect, sweep, and reload hoses that have not been
unloaded from apparatus for 6 months.• Make sure hoses are folded at different points when reloaded.• Inspect and test hoses annually and after possible damage.
12Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Damage (continued)• Chemical damage
– Some chemicals and chemical vapors can damage the outer jacket and/or cause the rubber lining to separate from the inner jacket.
– Some products may weaken a hose to the point where it can burst under pressure (paints, acids, Petroleum based, Alkalis).
– Runoff water may also contain contaminates that can damage a hose.
13Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Damage (continued)
• Chemical damage (continued)– Damage control
– Scrub hoses thoroughly and brush off traces of acid contact with a solution of baking soda and water (baking soda neutralizes acids).
– Periodically remove hoses from apparatus, wash them with plain water, and let them dry.
– Test hoses if you suspect damage.– Don’t lay hoses in gutters or next to the curb where vehicles
park; there may be an accumulation of oil or acid from car batteries.
– Dispose of hoses according to department Standards of Procedures (SOPs) if they cannot be decontaminated.
14Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Care and Maintenance• Washing hoses – the method is
dependent upon its type– Rinse the following hose types with
clear water and use mild soap if necessary:
• Hard rubber booster hose• Hard intake hose• Rubber jacket collapsible hose
– Woven jacket hose• Dust and dirt should be thoroughly brushed
and swept.• If the dirt can’t be removed, wash and scrub
it with clear water and a brush.15Copyright © Texas Education Agency 2011. All rights reserved.
Images and other multimedia content used with permission.
Care and Maintenance (continued)
• When a hose has been exposed to oil:– Wash it with a mild soap or detergent, using a common
scrub brush or straw broom, and a stream of water from a garden hose.
– Once the oil is removed, rinse it thoroughly with clear water.
16Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Care and Maintenance(continued)
• Hose washing machines– The most common type washes
hoses up to 3 inches in diameter.– The flow of water can be adjusted;
the movement of water assists in propelling the hose through the machine.
– The hoseline can be connected to the pumper or to a hydrant directly; the higher the water pressure, the better the results.
17Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Care and Maintenance(continued)• Cabinet-type machines
– Wash, rinse, and drains fire hoses– Designed to be used in the station– Can be operated by one person, and can be used
with or without detergent
18Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Care and Maintenance(continued)• Drying hoses
– Fire hoses should be dried before being stored.– Woven jacket hoses should be dried before being put back on the
apparatus.– The methods used to dry hoses depend on the hose type.– Hoses should be dried according to department SOPs and the
manufacturer’s specifications– The following may be put back on the apparatus while wet:
• Hard rubber booster hose• Hard intake hose• Synthetic jacket collapsible hose
19Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Care and Maintenance(continued)
• Storing hoses– After a hose is brushed, washed, and dried, it should be rolled and
stored in its rack, unless it is to be placed back on the apparatus.– Hose racks should be located in clean, ventilated rooms or close to
the apparatus room for easy access.– Racks can be freestanding or mounted on a wall.– Mobile hose racks can be used to store and move hoses from
storage rooms to the apparatus for loading.
20Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fire Hose Couplings
• Coupling types– Threaded couplings
• Male or female couplings with spiral threads
• Either three- or five-piece type
– Nonthreaded couplings• Couplings with no male or
female components (Storz Couplings or sexless couplings)
• Commonly found on large-diameter hoses
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Fire Hose Couplings (continued)
22
The male coupling is fixed to the hose and does not swivel while the female coupling swivels on the fixed shank.
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Lug Types
23
Extended lugs
Female coupling with pin lugs
Male and female couplings with rocker lugs.
Booster hose couplings with recessed lugs
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Gasket Types
• Swivel gasket – used to make the connection water-tight when female and male ends are connected
• Expansion-ring gasket – used at the end of the hose where it is expanded into the shank of the coupling
24Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Coupling Care Rules
• Avoid dropping and/or dragging couplings.• Keep vehicles from running over hose couplings.• Inspect couplings when a hose is washed and dried.• Remove the swivel gasket and twist the swivel in
warm, soapy water.• Clean the threads to remove tar, dirt, gravel, and oil.• Inspect the gasket and replace it if it is cracked or
creased.
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Fire Service HosePart II
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Hose Valves
• Valves control the flow of water and are used in hose appliances.
• Water travels through appliances.
27
Ball valve Gate valve
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Hose Valves (continued)
28
Butterfly valveClapper valve
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Hose Valve Devices
• Allow the number of hoselines to be increased or decreased.
• Used in wye appliances, siamese appliances, water thief appliances, large diameter hose appliances, and hydrant valves.
29Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Hose Valve Devices (continued)
30
Gated Wye – 1 female inlet, 2 male outlets
StorzManifoldorWater Thief
Siamese2 female inlets, 1 male outlet
Older type large-diameter manifold
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Hydrant Valves
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32
Hydrant Valves (continued)
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Fittings
• Adapters – fittings for connecting hose couplings with dissimilar threads but the same inside diameter
• Reducer – an adapter used to attach a smaller hose to a larger hose. The female end has the larger threads, while the male end has the smaller threads.
33
Double Female Adapter Double Male Adapter Reducer
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Fittings (continued)
• In some areas, hydrants are equipped with sexless adapters on the main discharge (steamer connection).
34Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Fittings (continued)
• Elbow adapter– Reduces stress on the hose
connected to the pump and prevents kinks in the hose
– Elbows may be permanently attached to pump intakes or discharges.
35Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Intake Devices• Intake strainers keep
debris from entering the pump.
• Floating strainers keep the hard intake hose away from the bottom and reduce the amount of debris that may clog the strainer.
36Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Hose Tools
• Hose rollers – prevent mechanical damage to hoselines that cross windowsills or wall parapets
• Hose jackets – can be used or applied to a hose to temporarily repair a rupture or leak– 2½ and 3 inches– Can also connect mismatched or damaged screw thread
couplings
37Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
• All are used to stop the flow of water in a hoseline for the following reasons:– To prevent charging a hoseline– To replace burst sections of a hose– To extend a hoseline– To advance a charged hoseline up stairs
Hose Clamps
38
Hydraulic Press
Screw down Press down
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Hose Clamp Application Rules• Apply at least 20 feet behind apparatus.• Apply within 5 feet of the coupling on the incoming
water side.• Center the hose evenly in the jaws to avoid pinching
the hose.• Close and open the hose clamp slowly to avoid
causing a water hammer.• Stand to one side when applying or releasing any
type of hose clamp (the operating handle or frame can snap open suddenly).
39Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Other Tools
• Hydrant wrench – removes caps from hydrant outlets and open hydrant valves
• Spanner – tightens or loosens couplings• Rubber mallet –tightens or loosens intake hose
couplings and helps get an airtight connection at the pump
40
Various types of spanners and hydrant wrenches
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Other Tools (continued)
• Hose bridges (ramps) – designed to permit the movement of traffic over a hose while protecting the hose from damage
• Chafing blocks – prevent abrasions to hose jackets at points of contact with the ground where pump or water vibrations are likely
41Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Other Tools (continued)
• Hose straps are used to– Reduce stress on the nozzle operator– Improve the mobility of a charged
hoseline
• Hose ropes and chains are used to– Carry and pull a fire hose– Provide a secure means to handle
pressurized hoselines– Secure a hose to ladders and other fixed
objects
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Fire Service HosePart III
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Hose Rolls• Straight roll used:
• When loaded back on the apparatus at the fire scene• When returning a hose to the station for washing• When placing the hose in rack storage• For easy loading of the minuteman load
44Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Hose Rolls (continued)
• Donut roll– Used to give firefighters control of both couplings,
while protecting them from damage– The hose deploys out with fewer twists and kinks– Facilitates connecting to other couplings– Can be performed by one or two firefighters
45Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Hose Rolls (continued)
Twin donut roll
46
Self-locking twin donut roll
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Hose Loads and Finishes
• Hose bed – the main hose-carrying area of a pumper or other piece of apparatus designed to carry hoses
• Finish – the arrangement of the hose, usually placed on top of a hose load and connected to the end of the load; also called a hose load finish
47Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Hose Loading Guidelines• Check gaskets and swivels before connecting any couplings.• Keep the flat sides of the hose on the same plane when
connecting; lugs do not need to be aligned.• Hand-tighten the couplings; never use wrenches or excessive
force.• Remove kinks and twists from fire hoses, then bend them to
form a loop in the hose bed.• Make a Dutchman when you need to change the direction or
location of a coupling.• Load LDH (3½ inches or larger) with all couplings near the
front of the bed to save space and allow the hose to lie flat.• Do not pack hose too tightly.
48Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Common Hose Loads
49
Flat Roll
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Hose Load Finishes
50
Straight Finish
Reverse Horseshoe Finish
Skid-LoadFinish
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Preconnected Hose Loads• Primarily used for attack lines• Connected to discharge valves and
placed away from the main hose bed
• Range from 50 to 250 feet long• Carried in
– Longitudinal beds– Raised trays– Transverse beds (cross lays)– Tailboard compartments– Side compartments/bins– Front bumper wells (jump lines)– Reels
51Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Common Preconnected Loads
52
PreconnectedFlat Load
Triple Layer Load
Booster Hose Reels
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Hose Lays
53
Forward lay• Extends from the
water source to the fire scene
• Has the female coupling loaded to come out of the hose bed first
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Hose Lays (continued)
54
Reverse lay• Used to extend the fire
hose from the fire to the water source
• The male coupling is usually located at the back of the hose bed.
• A nozzle or gated wye may be attached to the coupling.
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Hose Lays (continued)
55
Split lay• Deployed by two pumpers, one making a forward lay
and one making a reverse lay from the same point
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Making and Breaking Hose Connections • Foot-Tilt Method
– Stand facing the two couplings.
– Place a foot on the hose behind the male coupling.
– Apply pressure to tilt it upward.
56Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Making and Breaking Hose Connections (continued) • Foot-Tilt Method (continued)
– Grasp the female end by placing one hand behind the coupling and the other hand on the coupling swivel.
– Bring both couplings together and turn the swivel clockwise with your thumb.
57Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Making and Breaking Hose Connections (continued) • Two-Firefighter Method
– Firefighter One• Grasp the male coupling
with both hands.• Bend the hose behind the
coupling.• Hold the coupling and hose
tightly against the upper thigh, or midsection, with the male threads pointed outward.
58Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Making and Breaking Hose Connections (continued)• Two-Firefighter Method
– Firefighter Two• Grasp the female coupling
with both hands.• Bring the couplings
together and align them.• Turn the female coupling
counterclockwise until it clicks.
• Turn the female swivel clockwise to complete the connection.
59Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Making and Breaking Hose Connections (continued)
60
• Knee-Press Method (Uncoupling)– Grasp the hose behind the female
coupling.– Stand the male coupling on end.– Set your feet well apart for
balance.– Place one knee upon the hose
and shank of the female coupling.– Snap the swivel quickly in a
counterclockwise direction while applying body weight to loosen the connection.
Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.
Resources
• 0135151112, Essentials of Firefighting (5thEdition), International Fire Service Training Association (IFSTA).
• Images used with permission from IFSTA.
61Copyright © Texas Education Agency 2011. All rights reserved.Images and other multimedia content used with permission.