TB 7 Firefighting Fires With Large Spray Streams

Question 1

Water has a great cooling effect because it expands ______ to 1

Answer 1

1700

Question 2

All the following are true of a spray nozzle

Answer 2

Less reach and less penetration
Excessive pressures break up spray quicker

Question 3

Spray stream has greater _____ coverage so less nozzle movement is required?

Answer 3

Angular

Question 4

One gallon of water absorbs ______BTU in changing to stream

Answer 4

9330

Question 5

When changing on gallon of water to steam only 1250 BTU,s are being utilized in raising the water temperature from 62 to ____degrees F

Answer 5

212

Question 6

What will a spray streams do to oxygen concentration?

Answer 6

Reduces

Question 7

All the following are true about using a spray nozzle

Answer 7

The fine spray limits the amount of water applied to fire
Hand lines are easier to handle at higher psi