II-32 Developing Effective Water Supplies

Question 1

To ensure that fire flows are developed and maintained in direct relation to ____, and to deliver the maximum capacity of HFD Engines

Answer 1

• fire load

Question 2

To improve the efficiency of engine companies by the use of ____, the proper placement of apparatus, and by maximizing hydrant capabilities

Answer 2

• reverse lays

Question 3

The___ are responsible for having a working knowledge of developing fireground water supplies and using this knowledge appropriately when acting E/O. ____ are also responsible to perform any other duties deemed necessary by their Company Officer

Answer 3

• Fire Fighter(s)

- Fire Fighter(s)

Question 4

An average hydrant can only supply approximately ____ gpm in 1,000 feet of 4-inch supply hose.

Answer 4

• 500

Question 5

When doing a ____, always consider access and the space available

Answer 5

• reverse lay

Question 6

All relays should start with the Engine at the Hydrant developing no more than ___ psi and relaying to the next Engine

Answer 6

• 100

Question 7

Pump pressure is based on the friction loss in the hose for the gpm flowing, plus the ____ psi residual pressure needed at the next engine

Answer 7

• 20-50

Question 8

____ psi should be added to these master streams of 350 gpm or greater

Answer 8

• 25

Question 9

____ valves should be properly used to decrease the chance of a burst hose, water hammer and/or damage to the pump and plumbing

Answer 9

• Pressure relief/governors

Question 10

500 gpm = \_\_ psi, 
750 gpm = \_\_ psi
1000 gpm = \_\_ psi, 
1250 gpm = \_\_ psi, 
1500 gpm = \_\_ psi

Answer 10

5, 11, 20, 31, 45

Question 11

A single supply line may be converted to a dual supply line at any time by adding ____ lays to the relay

Answer 11

• forward or reverse

Question 12

If the lines are unequal in length, then calculate friction loss for the___ line.

Answer 12

• longest

Question 13

To terminate the relay the ___ engine is the first to shut down, followed by each intermediate engine, and concluding at the ___ engine.

Answer 13

• attack

- supply

Question 14

If a supply line of ___ feet is laid without other engines connected in the hose line and it’s determined that flows in excess of ____ gpm are required, the engine company shall notify command for relay operations to be initiated

Answer 14

• 1000

- 500