CPD CPD Fire Protection & Suppression Systems

Question 1

Which NFPA standard governs the installation of water-based fire suppression sprinkler systems in the US?

Accepted Answer

NFPA 13

Answer

NFPA 14

Answer

NFPA 20

Answer

NFPA 72

Question 2

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

Accepted Answer

To allow fire department pumper trucks to supplement system water supply during a fire

Answer

To serve as the primary water meter for the sprinkler system's domestic supply

Answer

To provide a test connection for measuring sprinkler system flow and pressure

Answer

To drain residual water from sprinkler piping after system testing

Question 3

What is the difference between a wet-pipe and a dry-pipe sprinkler system?

Accepted Answer

Wet-pipe systems contain water in the piping at all times; dry-pipe systems use pressurized air with water only released upon sprinkler activation

Answer

Wet-pipe systems use antifreeze; dry-pipe systems use pressurized nitrogen only

Answer

Wet-pipe systems are for outdoor use; dry-pipe systems are required in all indoor applications

Answer

Wet-pipe systems discharge foam; dry-pipe systems discharge only water

Question 4

In NFPA 13 sprinkler design, what does 'hazard classification' determine?

Accepted Answer

The required water density and area of application used to size the sprinkler system

Answer

The required fire resistance rating of the building's structural members

Answer

The type of detector required in each occupancy for early warning

Answer

The minimum separation distance between sprinkler heads and light fixtures

Question 5

What is a backflow preventer's role in a fire protection system connected to a potable water supply?

Accepted Answer

To prevent contaminated fire suppression water from flowing back into the potable water supply

Answer

To boost water pressure to sprinkler heads located above the street main elevation

Answer

To reduce static pressure in the sprinkler main to prevent pipe joint leakage

Answer

To isolate individual sprinkler zones for independent testing and maintenance

Question 6

What is the minimum residual pressure typically required at the most remote sprinkler head per NFPA 13?

Accepted Answer

7 psi

Answer

5 psi

Answer

15 psi

Answer

25 psi