Rely Procedures

Question 1

Name 2 conditions when it may be necessary to consider a relay operation.

Answer 1

Friction loss due to excessive supply line lay or excessive back pressure due to water consumption at a higher elevation than the supply

Question 2

The steepest grades will be encountered on fire roads and with them a definite effort has been made to hold the grade within ______%

Answer 2

12.5 %

Question 3

The chandler fire road has a grade of _____%

Answer 3

18%

Question 4

According to the AOTM, what is the best way to determine pump pressure in a relay operation?

Answer 4

Radio communications

Question 5

True OR False

If you have a total number of 6 pumps at a fire involved in a relay operation, it would be correct to assume you have 6 pumps.

Answer 5

False - you don’t count the last pump.

Question 6

During relay operations, each pump involved should be capable of pumping maximum ______psi.

Answer 6

200psi

Question 7

What are the proper hand signals to use if radio communications are not possible for :

Hold/stop
Increase pressure
Lower pressure
Shutdown/break up

Bonus: what hand shall headgear be held in

Answer 7

Place hands overhead and wide-spread, with palms toward the person being signalled in the universal STOP signal.

Wave the outstretched arm up and down.

Wave the outstretched arm from side to side.
This signal is also used by operator at source of supply to Indicate that he is unable to increase pressure.

Place arms overhead with hands touching, making an inverted “v

Question 8

During drafting, a minimum of how many inches of mercury should be pulled?

Answer 8

20 inches

Question 9

During a vacuum test, how many inches of mercury drop is tolerated and in what time frame?

Answer 9

12 inches in 10 minutes

Question 10

True OR False

Do not attempt lifts exceeding more then 22’ except at low altitudes and with equipment in new condition

Answer 10

True