TB 11 & 12

Question 1

Dry Chem is ____ as effective as CO2 extinguishers on hydrocarbon or methane fires

Answer 1

Twice

Question 2

How far above acid spills do you hold nozzle on dry Chem?

Answer 2

2-3 feet

Question 3

Dry Chen is made of heavy gauge steel tested to ____ psi

Answer 3

600

Question 4

Dry Chem pressure range

Answer 4

125-175

Pressurized at 165

Question 5

Dry Chem nozzle shapes to a _____ degree cone

Answer 5

60

Question 6

Dry chem holds how many lbs of dry chem and how far will it discharge over how much time?

Answer 6

20 lbs

15 to 20 feet

10 seconds

Question 7

Dry Chem is used with a minimum of ____ members at a distance not closer than _____

Answer 7

2 members

6-8 feet

Question 8

The most important fire protection device is

Answer 8

Automatic sprinkler systems

Question 9

What percentage of fires in sprinklered buildings are extinguished or held in check?

Answer 9

96

Question 10

When shall companies hook up to sprinkler inlets?

Answer 10

As soon as need is evident

Question 11

What lines and at what PSI should companies use to supply sprinkler inlets?

Answer 11

2 - 2 1/2 lines

100 psi to no fire showing

150 to fire showing

Question 12

Junior systems consist of _____ sprinklers and supplied by ____ inch brass pipe.

Answer 12

3-4

1

Question 13

Junior system is a loop of ____ inch or _____ inch tubing made of ______. Fitted with a small orifice sprinklers that are sized at _____ or ______.

Answer 13

3/4 inch or 1inch

1/4 inch or 3/8 inch

Question 14

Junior systems discharge how much less water than normal sprinklers ?

Answer 14

Half