Firefighting Equipment: 1.78" Hose

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Questions and Answers

What is the coupling size for both the 1.78" and 1.75" hoses?

1.5" (correct)

2.0"

1.75"

1.78"

What colors distinguish the 1.75" hose?

Green and red

Black and blue

Green and black

Red and blue (correct)

When will the 1.75" hose be phased out?

2023

2022

2024 (correct)

2025

What marking is used at the midpoint of both hoses for deployment?

Black paint Signup and view all the answers

What is an inappropriate use of the 1.75" and 1.78" hoses together?

In IDLH environments Signup and view all the answers

Which hose is used as the Trash Line on all apparatus, if equipped?

1.75" Hose Signup and view all the answers

What is the visual distinction of the 1.78" hose?

Green stripe bordered by black stripes Signup and view all the answers

How had the 1.78" hose generally been used?

For handheld attack lines Signup and view all the answers

How is the 1.75" hose carried in Engine Companies?

As pre-connected lines, dead loads, and Attack 100 bundles Signup and view all the answers

What length is the Key True ID 2.25" hose carried in?

50 feet Signup and view all the answers

What is the 2.5" hose on engines referred to as when pre-connected?

Blitz Line Signup and view all the answers

What couplings are used on the 2.25" hose?

2.5 inch Signup and view all the answers

Which hose is primarily used for water supply and connecting to sprinkler and standpipe systems?

3" hose Signup and view all the answers

Where is the 50' section of 3" hose stored on District engines?

Hose tray on the pump panel Signup and view all the answers

What color is the 5" hose, except for the indicator section?

Yellow Signup and view all the answers

How is the 5" hose loaded in the hose bed?

Flat-loaded, alternating long and short with an offset of six inches Signup and view all the answers

How much 5" hose is standard on District engines?

1000 feet Signup and view all the answers

Which hose is never used as a handheld firefighting line?

5" hose Signup and view all the answers

Which type of hose is the primary supply hose of the district?

5" Large Diameter Hose (LDH) Signup and view all the answers

Which hose is prominently used for brush fires?

Booster hose Signup and view all the answers

How long are the individual lengths of booster hose carried on reels by district engines?

100 feet Signup and view all the answers

What is the diameter of the hard suction hose carried by district engines?

6 inches Signup and view all the answers

What is the primary function of a suction hose?

To draft water from a static source Signup and view all the answers

Which manual should be referenced for forestry hose?

Wildland Context manual Signup and view all the answers

How many feet of booster hose are district engines outfitted with?

200 feet Signup and view all the answers

What characteristic makes the 5" LDH the preferred supply line while operating from a hydrant?

Minimal friction loss Signup and view all the answers

What type of material reinforces the hard suction hose?

Wire helix Signup and view all the answers

Where is the reserve tender's hard suction hose carried?

4" diameter Signup and view all the answers

Study Notes

1.78" Hose

Key Combat Sniper 1.78" double jacket hose, ideal for handheld attack lines.
Delivers effective fire stream, suitable for one firefighter to operate.
Distinguished by green stripe boarded by black stripes.
Couplings are 1.5".

1.75" Hose

Key Combat Ready 1.75" double jacket hose, being phased out through attrition.
Used as attack line on older engines and aerials, and as Trash Line on all apparatus.
Characterized by red and blue stripes.
Couplings are 1.5".
Marked with black paint at the mid-point for hose deployment.

Hose Types

2.25" Hose

Key True ID 2.25" hose, carried in 50' lengths in bundles (Denver Bundles).
Equipped with 2.5" couplings.

2.5" Hose

Versatile, used as attack line or alternative water supply line.
Carried on engines as pre-connected line (Blitz Line) or in bulk bed.
Flat-loaded, alternating long and short.

3" Hose

Primarily used for water supply, including sprinkler and standpipe systems.
Available in 50' and 100' lengths.
Outfitted with 2.5" couplings, compatible with 2.25" and 2.5" hoses.

5" Supply Hose

5" Large Diameter Hose (LDH), used for supplying water to fire pumps or aerial waterways.
1000 feet of 5" hose is standard on District engines, in 100' lengths.
Engines also equipped with 50' pony section of 5" hose.
Flat-loaded, alternating long and short, with an offset of six inches.
Couplings loaded at the rear of the hosebed.
Yellow in color, except for red indicator section.

Fire Hose Types

5" Large Diameter Hose (LDH)

Primary supply hose of the district.
Delivers large volumes with minimal friction loss.
Preferred supply line when operating from a hydrant.

Booster Hose

Prominently used for brush fires, overhaul, and decontamination.
District engines carry booster hose on reels, in 100' lengths.
Engines equipped with 200' of booster hose.

Suction Hose

Used to draft water from a static source.
Hard suction hose is rigid, reinforced with wire helix to prevent collapse.
Less flexible than typical fire hoses, creating negative pressure or vacuum inside.
Hard suction hose carried by District engines is 6" in diameter, in ten-foot lengths.
Reserve tender equipped with 4" hard suction.

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Description

Identify the features and uses of the 1.78" hose, a popular choice for handheld attack lines in firefighting.