TB 12 - Automatic Sprinkler System

Question 1

The what is by far the most important of all the fire protection devices per NFPA?

Answer 1

Automatic sprinkler

Question 2

Early detection of fire and effective application of the available what supply are fundamental to minimizing most fire losses?

Answer 2

Water

Question 3

Records show that what percentage of all fires in sprinklers building are extinguished or satisfactorily held in check by the sprinkler system?

Answer 3

96%

Question 4

NFBU bulletin No. 270 suggest that one of the first fire alarm engine companies responding should lay 2 of what size lines into the fire department connection?

Answer 4

2 1/2”

Question 5

Pump operators should deliver what psi to the sprinkler system if nothing showing and when fires showing?

Answer 5

100 psi nothing showing

150 psi fire showing

Question 6

Normally what size hoseline would be sufficient in sprinklered buildings?

Answer 6

1 1/2”

Question 7

In order to properly utilize the potential of sprinklers in the area, it is suggested that companies maintain a list of sprinklered buildings in their district, the info can be obtained from what form which are filed behind what forms in the company files?

Answer 7

F-316s filed behind F-173s

Question 8

Extreme what must be exercised by officers when ordering systems turned off after a fire?

Answer 8

Caution

Question 9

Who must remain at the control valve so that it can be reopened without delay if needed and until system is put back into service?

Answer 9

The fireman ordered to close the control valve

Question 10

Sprinklers delivering water directly over the seat of the fire generally use far less water while doing a better job of cooling and extinguishing than what?

Answer 10

Hose lines

Question 11

Intense what may even prevent hose men from reaching the fire at all?

Answer 11

Heat

Question 12

Junior systems are designed to provide simple, inexpensive protection for light hazard occupancies where not over how many sprinklers are likely to operate?

Answer 12

3 or 4 sprinklers

Question 13

The junior system is connected directly to the service water supply through a what size brass pipe and electric water flow alarm?

Answer 13

1”

Question 14

Is there a fire department connection and drain valve in a junior system?

Answer 14

No

Question 15

The junior system itself is a loop of what size copper tubing?

Answer 15

3/4” or 1”

Question 16

What size orifice are the sprinklers in a junior system?

Answer 16

1/4” or 3/8”

Question 17

The discharge in a junior system will about how much less water as the standard 1/2” sprinkler system?

Answer 17

1/2 as much water

Question 18

Junior systems are distinguished by what extending beyond the center of the deflector?

Answer 18

Pintle