Fire Service Hose Flashcards
Relevant NFPA Sections
1961- Design and construction of new hose
1962- Use, inspection, service testing, nozzles, appliances, etc.
1963- Standard for the design, construction, and testing of couplings and mating surfaces
1901- Minimum hose amount/size for each type of fire appparatus
Supply Hose purpose
Supplies water from hydrant and/or water supply to apparatus
Attack Hose purpose
Transports water or other agents at increased pressure FROM PUMP TO NOZZLE
Fire Hose Common Construction
- Flexible
- Watertight
- Smooth rubber or neoprene lining
- Covered by durable jacket
Fire Hose Common Configurations
- Single jacket
- Double jacket
- Rubber single jacket
- Hard rubber or plastic non-collapsable
Hose Size Measurements
Internal diameter of the hose
Hose Measurements in Length
- Attack and Supply Hoses = 50-100ft per NFPA 1961
- Soft Sleeve Hose = Minimum 15ft (hydrant to pump)
- Hard Suction = 10ft (drafting from a static source)
Fire Hose Couplings
Form continuous hose line, connect hoses to nozzles and hydrants, and connect to pumper connections and FDC’s
Couplings NFPA
NFPA 1963
Categories of Couplings
- Cast- Weak, used on occupant only hose
- Extruded- Aluminum/alloy, light-weight, high-strength
- Drop forged- Brass or other malleable material, strongest and most expensive
Non-threaded couplings connect with…
Locks or cams
Thermal damage can cause…
Charring, melting, weakening of the outer jacket, or dehydration of the rubber lining
How to prevent thermal damage to fire hose (HEAT)
- Avoid heat/fire/sun exposure
- Low heat for drying
- Use a straight roll for storage (prevents liner from drying)
How to prevent thermal damage to fire hose (COLD)
- Allow water to flow through hose/nozzles
- Drain ASAP
- Use a cold weather lubricant on the swivel/gaskets
Preventing mold/mildew
- Rotate old hose (6 months of no use)
- Ventilate all areas where hose is kept
- Wash ASAP if mold is found
Chemical damage
- Petroleum products (gas/diesel), paints, acids, alkalis
- Battery acid
- Runoff water
- Leftover water can form sulfuric acid
Preventing chemical damage
-Remove and wash/dry with plain water if exposed to chemicals
Corrosion
Brass coupling (copper and zinc) corrodes when exposed over time to damp organic material
Aluminium coupling forms oxide coating over time if left exposed
How to indicate if a hose is out of service…
- Male coupling facing out while stored
- Tied in a knot
- Out of service tag
Hose Inspection
NFPA 1962:
Hose should be inspected and service tested within 90 days of being placed in service initially, and annually or any time it is used at an incident or for training.
Inspection damage to report…
- Hose pulled out of coupling
- Loose coupling
- Absence of gasket
- Damage to threads
Hose methods of washing
- Wash with clear water while brushing
- Hose washers take hoses up to 3 inches
Important note for drying hoses
Remove the hose from towers/dryers as soon as it’s dry to avoid any damage
Prevent damage during storage
Protect couplings by rolling hose with MALE ENDS INSIDE
Hose Appliances
- Valves
- Valve devices
- Fittings
- Intake strainers
Types of valves
- Ball valve
- Gate valve (lowers gate through use of screw-like device; similar to drawbridge/moat)
- Butterfly valve
- Clapper valve
Fittings
REDUCERS- From one size line to another, usually from larger to smaller
-Adapters- For different threads and/or coupling types
Hose Tools
- Hose clamp
- Hose roller (glid over rough surfaces, like edge of roof)
- Hose jacket
Hose Rolls
- Straight Roll (used for storage)
- Donut Roll
- Twin Donut Roll
- Self-interlocking twin donut roll
