Firefighter Protection Systems 2

Question 1

Which sprinkler system uses pipes filled with pressurized air and a dry-pipe valve to prevent freezing?

Accepted Answer

Dry-pipe system

Answer

A dry-pipe system keeps pressurized air in the pipes until a head opens, releasing water, which protects unheated spaces from freezing.

Question 2

A fusible-link sprinkler head activates when the link does what?

Accepted Answer

Melts at a rated temperature

Answer

Fusible-link heads contain a solder link that melts at a set temperature, opening the head to release water.

Question 3

What color of sprinkler head glass bulb indicates an ordinary temperature rating (135-170°F)?

Accepted Answer

Orange or red

Answer

Orange (135°F) and red (155-170°F) bulbs indicate ordinary temperature ratings.

Question 4

A deluge system is BEST suited for which hazard?

Accepted Answer

A high-hazard area needing rapid total water application

Answer

Deluge systems have open heads and flood an entire area at once, ideal for high-hazard occupancies like aircraft hangars.

Question 5

What device on a sprinkler system signals the alarm when water begins to flow?

Accepted Answer

Water flow switch

Answer

A water flow switch (vane or pressure type) detects flow and activates the alarm.

Firefighter Practice Test