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Lead instructor Gerry Pierce. Hose Testing Objectives  Construction of fire hose.  Sizes of fire hose (used at WFRD)  Use and care of fire hose. 

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Presentation on theme: "Lead instructor Gerry Pierce. Hose Testing Objectives  Construction of fire hose.  Sizes of fire hose (used at WFRD)  Use and care of fire hose. "— Presentation transcript:

1 Lead instructor Gerry Pierce

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

3 History of fire hose Fire hose dates back to 1862 it was leather with a riveted or sewn seam. This hose leaked badly and was prone to rupture when under pressure. Fire hose dates back to 1862 it was leather with a riveted or sewn seam. This hose leaked badly and was prone to rupture when under pressure. Brass fittings were used to couple the hose sections together Brass fittings were used to couple the hose sections together Suction hose was metal rings with painted sail cloth surrounding it for an air tight seal. Suction hose was metal rings with painted sail cloth surrounding it for an air tight seal.

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

5 Construction of modern Fire Hose Hose has a inner lining mostly made of synthetic rubber, for added flexibility and reduced friction loss. Hose has a inner lining mostly made of synthetic rubber, for added flexibility and reduced friction loss. There is a woven Jacket of Nylon or polyester fabric, this aids in resistance to molding and gives added strength to the rubber lining as well as protection. May be color coded for easy identification. There is a woven Jacket of Nylon or polyester fabric, this aids in resistance to molding and gives added strength to the rubber lining as well as protection. May be color coded for easy identification. Aluminum couplings are used with rounded rockers to avoid being hung on objects as the hose is dragged. Aluminum couplings are used with rounded rockers to avoid being hung on objects as the hose is dragged.

6 Single Jacket Fire hose Single jacket constructions consist of a thermoplastic or synthetic rubber liner combined with a closely woven textile single jacket. The jacket may be a combination of cotton and polyester, or 100% synthetic material Single jacket constructions consist of a thermoplastic or synthetic rubber liner combined with a closely woven textile single jacket. The jacket may be a combination of cotton and polyester, or 100% synthetic material

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

8 NFPA 1961 and NFPA 1961 and ANSI- American National Standards Institute. ANSI- American National Standards Institute. UL 19 UL 19 All designate and regulate how fire hose is made tested and inspected for safety. There are approx 38 tests performed ranging from varying pressure, Ozone, sun, mildew resistance, and durability.

9 Sizes 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 are most commonly used here. Lengths may vary but 50 foot sections are most commonly used here. 5 inch soft sleeves are utilized for front intakes. Usually 15 or 20 foot lengths. 5 inch soft sleeves are utilized for front intakes. Usually 15 or 20 foot lengths.

10 Care of fire hose Care should be taken to keep hose from being pinched in closing doors, pulled over abrasive or sharp surfaces, Care should be taken to keep hose from being pinched in closing doors, pulled over abrasive or sharp surfaces, Use of a hose roller is recommended when hose is going to be taken over an edge of a building or wall. Use of a hose roller is recommended when hose is going to be taken over an edge of a building or wall. A hose wringer can be used when repacking to get air and water out of hose to allow for a flatter load. A hose wringer can be used when repacking to get air and water out of hose to allow for a flatter load. When storing hose it should be rolled beginning with couplings that have exposed threads. When storing hose it should be rolled beginning with couplings that have exposed threads.

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

12 Cleaning Hose usually only needs to be cleaned with plain water. Hose usually only needs to be cleaned with plain water. A mild soap may be used to get any oil, or soot off. A mild soap may be used to get any oil, or soot off. If used in hazardous materials, should be decontaminated as recommended or disposed of properly. If used in hazardous materials, should be decontaminated as recommended or disposed of properly. Jacketed hose should be dry before rolled for storage. Jacketed hose should be dry before rolled for storage.

13 Repairing 4” hose can be repaired by department personnel. 4” hose can be repaired by department personnel. There are proper tools available at the office There are proper tools available at the office Detailed documentation should be kept on the department hose card file. Detailed documentation should be kept on the department hose card file. Any Jacketed Hose is not considered repairable and should be documented when placed out of service. Any Jacketed Hose is not considered repairable and should be documented when placed out of service.

14 Repair 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.

15 Repair procedure Remove the bolts and segment collars Remove the bolts and segment collars

16 Repair procedure Hose will have to be slit to release bond to the hub Hose will have to be slit to release bond to the hub Be careful not to gouge the hub with knife while cutting or screw driver while prying. Be careful not to gouge the hub with knife while cutting or screw driver while prying.

17 Repair procedure Inspect collars for: “dragging” wear “dragging” wear Cracks Cracks Scale build up Scale build up Check threads in segments and on bolts as well as the socket heads Check threads in segments and on bolts as well as the socket heads

18 Repair procedure Scrape heavy build up from hub and use a wire brush to fully clean. Scrape heavy build up from hub and use a wire brush to fully clean. Ensure that hub spins freely in coupling Ensure that hub spins freely in coupling Check lock dog for any wear or excessive play Check lock dog for any wear or excessive play

19 Inspection Inspect gasket for smooth sealing surface and flexibility for proper sealing Inspect gasket for smooth sealing surface and flexibility for proper sealing Check lugs for wear, cracks, or any deformities. Check lugs for wear, cracks, or any deformities.

20 Inspection Also check slots and lip that lugs connect into. Also check slots and lip that lugs connect into. Rotate coupling on hub and check for smooth operation. Rotate coupling on hub and check for smooth operation. Can submerge coupling in mild soapy water while rotating to clean. Can submerge coupling in mild soapy water while rotating to clean.

21 Repair completion Slide hose onto hub only use mild soapy water as a lubricant, if necessary. Slide hose onto hub only use mild soapy water as a lubricant, if necessary. Install collars over hose with flat side towards coupling. Install collars over hose with flat side towards coupling. Do not lubricate bolt threads Do not lubricate bolt threads

22 Repair completion Start bolts evenly keeping gaps between collars even while tightening. Start bolts evenly keeping gaps between collars even while tightening. Hand tighten bolts then “step torque” bolts. Hand tighten bolts then “step torque” bolts.

23 Step torque procedure Step torque by starting at 20 foot pounds of torque to each bolt. Step torque by starting at 20 foot pounds of torque to each bolt. Then increase to 25 foot pounds on each bolt. Then increase to 25 foot pounds on each bolt. Make final torque of 30 foot pounds to each bolt. Make final torque of 30 foot pounds to each bolt. Be sure gap remains the same between collars. Be sure gap remains the same between collars.

24 Torque wrench used for 4” hose repair

25 Stamp I D number in two locations on couplings near lugs. Stamp I D number in two locations on couplings near lugs. The smaller number stamps do a better job. The smaller number stamps do a better job. Stamp a piece of wood first to ensure proper positioning. Stamp a piece of wood first to ensure proper positioning.

26 Dies for stamping ID numbers

27 New couplings should be torqued to 40 foot pounds. New couplings should be torqued to 40 foot pounds. Reused couplings collars and bolts should be torqued to 30 foot pounds. Reused couplings collars and bolts should be torqued to 30 foot pounds. Test hose and recheck repaired couplings for hose slippage and proper bolt torque. Test hose and recheck repaired couplings for hose slippage and proper bolt torque.

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

29 Hose testing Done on an annual basis. Done on an annual basis. Should be performed in an area free of debris and on a slight incline. Should be performed in an area free of debris and on a slight incline. Should have available markers for marking hose at couplings to check for slippage and scribes to clearly mark hoses with identification numbers. Should have available markers for marking hose at couplings to check for slippage and scribes to clearly mark hoses with identification numbers. Means for recording hose after test is complete, and a form of tagging failed hose with a description of why. Means for recording hose after test is complete, and a form of tagging failed hose with a description of why.

30 PAGE 1 OF 3

31 PAGE 2 OF 3

32 PAGE 3 OF 3

33 Team work Practicals Monday – Test Eng or Wag 4 Monday – Test Eng or Wag 4 Tuesday – Test Eng 5 Tuesday – Test Eng 5 Wednesday - Test Eng or Wag 1 Wednesday - Test Eng or Wag 1 Friday - Test Wag or Eng 4. Friday - Test Wag or Eng 4.

34 ? ANY QUESTIONS ?


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