FST Sprinkler Systems 3

Question 1

What type of sprinkler system uses a deluge valve and open sprinkler heads throughout the protected area?

Accepted Answer

Deluge system

Answer

A deluge system uses open (non-heat-activated) sprinkler heads and floods all heads simultaneously when the deluge valve opens.

Question 2

Which NFPA standard specifically governs the installation of sprinkler systems in one- and two-family dwellings?

Accepted Answer

NFPA 13D

Answer

NFPA 13D covers the installation of sprinkler systems in one- and two-family dwellings and manufactured homes.

Question 3

During a forward flow test of a backflow preventer on a sprinkler system, water flows downstream but the supply shows a pressure loss of 15 psi. This is most likely due to:

Accepted Answer

Normal pressure drop across the backflow preventer

Answer

Reduced pressure backflow preventers and double check assemblies inherently cause a pressure drop, typically 5–15 psi, which is normal.

Question 4

What is the purpose of an inspectors test connection (ITC) on a wet pipe sprinkler system?

Accepted Answer

To simulate operation of the most remote sprinkler and test alarm devices

Answer

The ITC simulates activation of the hydraulically most remote sprinkler to test the water motor gong, electric alarm, and flow switch without actually discharging sprinklers.

Question 5

ESFR (Early Suppression Fast Response) sprinklers are designed primarily to protect:

Accepted Answer

High-piled storage occupancies

Answer

ESFR sprinklers deliver large water droplets at high pressure to penetrate fire plumes in high-challenge storage environments.

(FST) Fire Safety Technician Certification Practice Test

(FST) Fire Safety Technician Certification Practice Test

FST Sprinkler Systems 3