F02 Sprinkler Systems

Question 1

What type of sprinkler system uses pressurized air in the pipes and only fills with water when activated?

Accepted Answer

Dry pipe system

Answer

Dry pipe systems maintain pressurized air or nitrogen in the pipes. When a sprinkler head activates, the air pressure drops, opening a valve to allow water to flow.

Question 2

What temperature rating do most standard sprinkler heads activate at?

Accepted Answer

135-165°F

Answer

Most ordinary-rated sprinkler heads are designed to activate at temperatures between 135°F and 165°F, which indicates a fire condition in the area.

Question 3

What is the purpose of a fire department connection (FDC) on a sprinkler system?

Accepted Answer

To allow the fire department to supplement the water supply to the system

Answer

The FDC allows firefighters to connect their hoses and pump additional water into the sprinkler system, supplementing the building's water supply during a fire.

Question 4

What does a tamper switch on a sprinkler control valve do?

Accepted Answer

Sends an alarm signal when the valve is closed or partially closed

Answer

Tamper switches monitor the position of sprinkler control valves and send a supervisory signal to the fire alarm panel if a valve is closed or tampered with.

Question 5

How many sprinkler heads typically must activate before a water flow alarm is triggered?

Accepted Answer

Just one head

Answer

A water flow alarm is typically triggered by the activation of just one sprinkler head, as any flow through the system indicates a fire condition.

F02 - NYC Fire Guard F-02 Practice Test

F02 - NYC Fire Guard F-02 Practice Test

F02 Sprinkler Systems