TB 55, 4" supply hose

Question 1

all 4” nitrile hose, bypasses and suctions to be tested annually, lay out a maximum ho how many feet, pumped at? and for how long?

Answer 1

300’, 300 psi, 5 minutes

Question 2

driving over 4” supply hose?

Answer 2

approach at a 45 degree angle

Question 3

What is the minimum hydrostatic acceptance test pressure for 4” hose is?

Answer 3

500 psi

Question 4

The minimum burst pressure of 4 inch hose is?

Answer 4

750 psi

Question 5

All 4 inch supply hose are provided with 4 inch lightweight, high-strength, aluminum alloy, hardcoded, rocker look male and female couplings, with 4 inch threads. Who’s wait is? For 50 foot section.

Answer 5

49 pounds

Question 6

The 4 inch nitro supply hose has a propensity to kink. In order to remove kinks, you should?

Answer 6

Remove obvious kinks and band prior to loading with water

Question 7

Maintenance on the 4 inch nitrile supply hose consists of all the following?

Answer 7

drying after use is not necessary,
after each use the outer jacket should be scrubbed to free it up dirt, fire debris, and contaminants,
Hose shall be identified with Fire Station number and section numbers stamped on the mail couplings

Question 8

When absolutely necessary to drive over 4 inch hose, it is preferable that?

Answer 8

Each tire should pass over the hose independently,

vehicles approach any slower to speed