lead instructor gerry pierce. hose testing objectives construction of fire hose. sizes of fire...

Lead instructor Gerry Pierce

Hose TestingHose TestingObjectivesObjectives

Construction of fire hose.Construction of fire hose. Sizes of fire hose (used at WFRD)Sizes of fire hose (used at WFRD) Use and care of fire hose.Use and care of fire hose. Proper cleaning of fire hose. Proper cleaning of fire hose. Method of repairing fire hose.Method of repairing fire hose. WFRD Procedures for testing hose.WFRD Procedures for testing hose.

History of fire hoseHistory of fire hose

Fire hose dates back to 1862 it was Fire hose dates back to 1862 it was leather with a riveted or sewn seam. leather with a riveted or sewn seam. This hose leaked badly and was This hose leaked badly and was prone to rupture when under prone to rupture when under pressure.pressure.

Brass fittings were used to couple Brass fittings were used to couple the hose sections togetherthe hose sections together

Suction hose was metal rings with Suction hose was metal rings with painted sail cloth surrounding it for painted sail cloth surrounding it for an air tight seal. an air tight seal.

History of Fire hoseHistory of Fire hose

In the late 1800’s hose was starting In the late 1800’s hose was starting to be made out of rubber with a to be made out of rubber with a cotton covering for protection. This cotton covering for protection. This type of hose didn’t leak as badly but type of hose didn’t leak as badly but the cotton covering would retain the cotton covering would retain moisture and mold easily.moisture and mold easily.

Construction of modernConstruction of modernFire HoseFire Hose

Hose has a inner lining mostly made of Hose has a inner lining mostly made of synthetic rubber, for added flexibility and synthetic rubber, for added flexibility and reduced friction loss.reduced friction loss.

There is a woven Jacket of Nylon or There is a woven Jacket of Nylon or polyester fabric, this aids in resistance to polyester fabric, this aids in resistance to molding and gives added strength to the molding and gives added strength to the rubber lining as well as protection. May be rubber lining as well as protection. May be color coded for easy identification.color coded for easy identification.

Aluminum couplings are used with Aluminum couplings are used with rounded rockers to avoid being hung on rounded rockers to avoid being hung on objects as the hose is dragged.objects as the hose is dragged.

Double jacket fire hose. Double jacket fire hose.

DDouble jacket constructions include ouble jacket constructions include a second closely woven jacket for a second closely woven jacket for extra durability, safety factor, and extra durability, safety factor, and higher test pressures. The jackets higher test pressures. The jackets are matched to assure a precision fit are matched to assure a precision fit to meet precise hydrostatic test to meet precise hydrostatic test requirements. requirements.

NFPA 1961 and 1962.NFPA 1961 and 1962. ANSI- American National Standards ANSI- American National Standards

Institute. Institute. UL 19 UL 19

All designate and regulate how fire hose is All designate and regulate how fire hose is made tested and inspected for safety.made tested and inspected for safety.

There are approx 38 tests performed There are approx 38 tests performed ranging from varying pressure, Ozone, ranging from varying pressure, Ozone, sun, mildew resistance, and durability.sun, mildew resistance, and durability.

Sizes of Fire HoseSizes of Fire Hose

1¾ and 2 ½ inch attack lines are used.1¾ and 2 ½ inch attack lines are used. 3 and 4 inch supply lines are used.3 and 4 inch supply lines are used. Booster line may be ¾ or 1 inch.Booster line may be ¾ or 1 inch. Lengths may vary but 50 foot sections Lengths may vary but 50 foot sections

are most commonly used here. are most commonly used here. 5 inch soft sleeves are utilized for front 5 inch soft sleeves are utilized for front

intakes. Usually 15 or 20 foot lengths.intakes. Usually 15 or 20 foot lengths.

Care of fire hoseCare of fire hose Care should be taken to keep hose from Care should be taken to keep hose from

being pinched in closing doors, pulled over being pinched in closing doors, pulled over abrasive or sharp surfaces, abrasive or sharp surfaces,

Use of a hose roller is recommended when Use of a hose roller is recommended when hose is going to be taken over an edge of hose is going to be taken over an edge of a building or wall.a building or wall.

A hose wringer can be used when A hose wringer can be used when repacking to get air and water out of hose repacking to get air and water out of hose to allow for a flatter load.to allow for a flatter load.

When storing hose it should be rolled When storing hose it should be rolled beginning with couplings that have beginning with couplings that have exposed threads.exposed threads.

StoringStoring

Can be left hanging in hose towers or Can be left hanging in hose towers or rolled and placed in an area that is rolled and placed in an area that is dry, and out of sunlight.dry, and out of sunlight.

CleaningCleaning Hose usually only needs to be cleaned Hose usually only needs to be cleaned

with plain water.with plain water. A mild soap may be used to get any A mild soap may be used to get any

oil, or soot off.oil, or soot off. If used in hazardous materials, should If used in hazardous materials, should

be decontaminated as recommended be decontaminated as recommended or disposed of properly.or disposed of properly.

Jacketed hose should be dry Jacketed hose should be dry before rolled for storage. before rolled for storage.

RepairingRepairing

4” hose can be repaired by 4” hose can be repaired by department personnel. department personnel.

There are proper tools available at the There are proper tools available at the office office

Detailed documentation should be Detailed documentation should be kept on the department hose card file.kept on the department hose card file.

Any Jacketed Hose is not considered Any Jacketed Hose is not considered repairable and should be documented repairable and should be documented when placed out of service.when placed out of service.

Repair procedureRepair procedure

Select area where hose is in need of repair and make a square cut on the hose.

Wipe the inn and outside of the hose to remove any residue or dirt.


Remove the bolts Remove the bolts and segment and segment collarscollars


Hose will have to Hose will have to be slit to release be slit to release bond to the hubbond to the hub

Be careful not to Be careful not to gouge the hub with gouge the hub with knife while cutting knife while cutting or screw driver or screw driver while prying.while prying.


Inspect collars for:Inspect collars for: ““dragging” weardragging” wear CracksCracks Scale build upScale build up Check threads in Check threads in

segments and on segments and on bolts as well as the bolts as well as the socket heads socket heads


Scrape heavy build Scrape heavy build up from hub and up from hub and use a wire brush to use a wire brush to fully clean.fully clean.

Ensure that hub Ensure that hub spins freely in spins freely in couplingcoupling

Check lock dog for Check lock dog for any wear or any wear or excessive playexcessive play

InspectionInspection

Inspect gasket for Inspect gasket for smooth sealing smooth sealing surface and surface and flexibility for flexibility for proper sealingproper sealing

Check lugs for Check lugs for wear, cracks, or wear, cracks, or any deformities.any deformities.

InspectionInspection

Also check slots Also check slots and lip that lugs and lip that lugs connect into.connect into.

Rotate coupling on Rotate coupling on hub and check for hub and check for smooth operation.smooth operation.

Can submerge Can submerge coupling in mild coupling in mild soapy water while soapy water while rotating to clean.rotating to clean.

Repair completionRepair completion

Slide hose onto Slide hose onto hub only use mild hub only use mild soapy water as a soapy water as a lubricant, if lubricant, if necessary. necessary.

Install collars over Install collars over hose with flat side hose with flat side towards coupling.towards coupling.

Do not lubricate Do not lubricate bolt threadsbolt threads

Repair completionRepair completion

Start bolts evenly Start bolts evenly keeping gaps keeping gaps between collars between collars even while even while tightening.tightening.

Hand tighten bolts Hand tighten bolts then “step torque” then “step torque” bolts.bolts.

Step torque procedureStep torque procedure

Step torque by starting at 20 foot Step torque by starting at 20 foot pounds of torque to each bolt.pounds of torque to each bolt.

Then increase to 25 foot pounds on Then increase to 25 foot pounds on each bolt.each bolt.

Make final torque of 30 foot pounds Make final torque of 30 foot pounds to each bolt.to each bolt.

Be sure gap remains the same Be sure gap remains the same between collars.between collars.

Torque wrench used for 4” Torque wrench used for 4” hose repairhose repair

Stamp I D number in Stamp I D number in two locations on two locations on couplings near lugs. couplings near lugs.

The smaller number The smaller number stamps do a better stamps do a better job.job.

Stamp a piece of Stamp a piece of wood first to ensure wood first to ensure proper positioning.proper positioning.

Dies for stamping ID Dies for stamping ID numbers numbers

New couplings should be torqued to New couplings should be torqued to 40 foot pounds.40 foot pounds.

Reused couplings collars and bolts Reused couplings collars and bolts should be torqued to 30 foot pounds.should be torqued to 30 foot pounds.

Test hose and recheck repaired Test hose and recheck repaired couplings for hose slippage and couplings for hose slippage and proper bolt torque.proper bolt torque.

Attention to detail Attention to detail during inspections during inspections and testing should and testing should be taken to ensure be taken to ensure reliability when reliability when pressure is applied pressure is applied during use.during use.

Hose testing Hose testing

Done on an annual basis.Done on an annual basis. Should be performed in an area free of Should be performed in an area free of

debris and on a slight incline.debris and on a slight incline. Should have available markers for marking Should have available markers for marking

hose at couplings to check for slippage hose at couplings to check for slippage and scribes to clearly mark hoses with and scribes to clearly mark hoses with identification numbers.identification numbers.

Means for recording hose after test is Means for recording hose after test is complete, and a form of tagging failed complete, and a form of tagging failed hose with a description of why.hose with a description of why.

Team work PracticalsTeam work Practicals

Monday – Test Eng or Wag 4Monday – Test Eng or Wag 4 Tuesday – Test Eng 5 Tuesday – Test Eng 5 Wednesday - Test Eng or Wag 1Wednesday - Test Eng or Wag 1 Friday - Test Wag or Eng 4.Friday - Test Wag or Eng 4.

? ANY QUESTIONS ? ? ANY QUESTIONS ?

lead instructor gerry pierce. hose testing objectives construction of fire hose. sizes of fire...

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