Firefighter IIIFirefighter III

Module BModule BWater SupplyWater Supply

(4-19)(4-19)

3-8.1. Identify the pipe sizes used in water 3-8.1. Identify the pipe sizes used in water distribution systems for residential, business, and distribution systems for residential, business, and

industrial districts: (4-19.10)industrial districts: (4-19.10)

I. Pipe sizes:Pipe sizes: a) Fire hydrant supply:a) Fire hydrant supply: i) Residential- six inches.i) Residential- six inches. ii) Business- eight inches.ii) Business- eight inches. iii) Industrial- 12 inches.iii) Industrial- 12 inches. b) Cross mains (distributors)- eight inches.b) Cross mains (distributors)- eight inches. c) Secondary feeders- 12 inches.c) Secondary feeders- 12 inches. d) Primary feeders- 16 inches.d) Primary feeders- 16 inches.

3-8.1. Identify the pipe sizes used in water distribution 3-8.1. Identify the pipe sizes used in water distribution systems for residential, business, and industrial systems for residential, business, and industrial

districts: (4-19.10)districts: (4-19.10)

3-8.1. Identify the pipe sizes used in water 3-8.1. Identify the pipe sizes used in water distribution systems for residential, business, and distribution systems for residential, business, and

industrial districts: (4-19.10)industrial districts: (4-19.10)

II. Water main valves:II. Water main valves: a) Indicating:a) Indicating: i) Post indicating valvei) Post indicating valve ii) OS & Yii) OS & Y b) Non- indicating valves:b) Non- indicating valves: i) Gate valvesi) Gate valves ii) Butterfly valves- most common type.ii) Butterfly valves- most common type.

3-8.2. Identify the following terms as they relate to water 3-8.2. Identify the following terms as they relate to water supply: (4-19.4)supply: (4-19.4)

3-8.2.1. 3-8.2.1. Head pressure:Head pressure: The pressure generated The pressure generated by the height of a water source above the by the height of a water source above the discharge source.discharge source.

3-8.2.2. 3-8.2.2. Static pressure:Static pressure: Pressure exerted when Pressure exerted when water is not flowing.water is not flowing.

3-8.2.3. 3-8.2.3. Residual pressure:Residual pressure: Pressure left at a Pressure left at a specific location when a quantity of water is specific location when a quantity of water is flowing.flowing.

3-8.2. Identify the following terms as they relate to water supply: (4-19.4)

3-8.2.4. Flow pressure: Forward velocity 3-8.2.4. Flow pressure: Forward velocity pressure at a discharge opening.pressure at a discharge opening.

3-8.2.5. Normal operating pressure: Pressure 3-8.2.5. Normal operating pressure: Pressure which is found during consumption demands.which is found during consumption demands.

3-8.2.6. Friction loss: Part of the total pressure 3-8.2.6. Friction loss: Part of the total pressure that is lost while forcing water through pipe, that is lost while forcing water through pipe, fittings, hose line, and adaptors.fittings, hose line, and adaptors.

3-8.3. Identify the following types of water main valves: (4-19.5)

3-8.3.1. Indicating:3-8.3.1. Indicating: A. Visually shows the position of the gate or A. Visually shows the position of the gate or

valve seat (closed, partially closed, or open).valve seat (closed, partially closed, or open). B. Valves used in private fire protection systems.B. Valves used in private fire protection systems.

3-8.3. Identify the following types of water main valves: (4-19.5)

3-8.3.2. Non- indicating:3-8.3.2. Non- indicating: A. Valves used in public water A. Valves used in public water

systems.systems. B. Normally buried or installed in B. Normally buried or installed in

manholes.manholes. C. If properly installed, operate C. If properly installed, operate

valve from above ground through valve from above ground through valve box.valve box.

D. A special socket on the end of a D. A special socket on the end of a reach rod (valve key) is used to reach rod (valve key) is used to operate valve.operate valve.

3-8.4. Identify two causes of increased resistance of friction loss in water mains. (4-

19.11)

A. Encrustation of minerals. B. Sedimentation

3-8.5. Given a pitot tube and gauge read and record flow pressures from three different size orifices. (4-19.9)

I. Use of pitot tubes:. Use of pitot tubes: a) Open petcock on tube.a) Open petcock on tube. b) Drain air chamber and then close petcock.b) Drain air chamber and then close petcock. c) Edge blade into stream with small opening being centered in

the stream and held a distance of ½ the diameter of the orifice from the opening.

d) Hold the pitot tube parallel to the outlet opening with the air chamber kept above the horizontal plane passing through the center of the stream.

e) Take and record the velocity pressure reading from gauge.

3-8.6. Identify apparatus, equipment, and appliances 3-8.6. Identify apparatus, equipment, and appliances required to provide water at rural locations by relay required to provide water at rural locations by relay

pumping. (4-19.7)pumping. (4-19.7)

I. Apparatus:I. Apparatus: a) Pumpers:a) Pumpers: i) Pumper with the highest pumping capacity is at water source. i) Pumper with the highest pumping capacity is at water source. ii) Number of pumpers determined by:ii) Number of pumpers determined by: (1) Volume of water needed(1) Volume of water needed (2) Distance(2) Distance (3) Hose size(3) Hose size (4) Amount of hose available(4) Amount of hose available (5) Pumper capacity(5) Pumper capacity

3-8.6. Identify apparatus, equipment, and appliances required to provide water at rural

locations by relay pumping. (4-19.7)

• II. Equipment and appliances:• a) Hose (supply)• b) Hose (capable of being connected to

source)• c) Adapters necessary to connect pumpers

3-8.7. Identify apparatus, equipment, and appliances required to provide water at rural locations by a mobile

water supply apparatus shuttle. (4-19.7)

I. Apparatus: a) Attack apparatus at fire. b) Fill apparatus at fill site- 1000 gpm

minimum. c) Mobile water supply apparatus.

3-8.7. Identify apparatus, equipment, and appliances 3-8.7. Identify apparatus, equipment, and appliances required to provide water at rural locations by a mobile required to provide water at rural locations by a mobile

water supply apparatus shuttle. (4-19.7)water supply apparatus shuttle. (4-19.7)

II. Equipment and appliances: a) Portable water tanks. b) Low-level intake devices. c) Jet siphon. d) Heavy tarp. e) Hard suction hose. f) Supply hose for filling tankers. g) Adapters necessary to connect at fill sites.