(2) TB 55 - 4-Inch Supply Hose Flashcards

1
Q

4” Supply Hose

Single-jacket hose consists of a 100% synthetic, high tensile reinforced yarn circular-woven in a “TWILL configuration” to maximize HOSE FLEXIBILITY and to __________.

A

eliminate the LEFT hand twist.

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2
Q

Hose weight is _____ lbs. per 50’ section.

A

49lbs

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3
Q

The 4” nitrile supply hose has a propensity to kink. Obvious kinks and bends should be removed PRIOR to loading with water.

Pressurizing the hose will not remove most kinks, but may make the problem ________.

A

worse

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4
Q

If the 4” hose line requires manipulation after it has been loaded, grasp the line from the ________(outside/inside/bottom/top?) of the curve or bend using a proper “hose grip” to lift or move.

A

-Outside

(Pinching hazard if grasped inside the curve)

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5
Q

Station Commanders shall cause all 4” nitrile hose, bypasses and suctions to be tested _______ using fire apparatus pumps.

A

Annually

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6
Q

Besides annually, when shall hose be tested?

A

-when new

-returned from repair

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7
Q

For Annual hose test, complete and forward a F-_____ and make a journal entry.

A

F-129
(One-twenty-nine = Test-a-hose-line)

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8
Q

Due to the construction of this hose (synthetic nitrile rubber), a thorough drying after use is ________.

After each use, scrub the outer jacket to free it of dirt, fire debris and any contaminants. Drain water from inside of hose, then reload onto apparatus.

A

not necessary

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9
Q

Loading the hose onto the apparatus should be done in a manner that minimizes _________.

A

air in the line.

(Load in rolled position)

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10
Q

Upon receipt of new hose, the hose shall be stenciled with the station numbers.

This number shall be applied lengthwise, with _____ inch stencils, starting _____ inches from both couplings.

A

1-1/2” stencil starting 6 inches from couplings

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11
Q

If it is absolutely necessary to drive over the 4” nitrile hose, it is preferable that the hose is approached at a _______ so that each tire passes over the hose independently.

A

45-degree angle

(making sure not to accelerate with a driving wheel in contact with the hose.)

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12
Q

Do not drive over couplings at any time.

What can happen if you drive over a 4” coupling?

A

Will get caught between tires of duals and cause severe damage to hose

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