CFM Fire Suppression Systems & Equipment Flashcards

Which type of automatic sprinkler system keeps pipes filled with pressurized water at all times and is the most common system installed in buildings?

Answer: Wet pipe system

Wet pipe systems maintain pressurized water in the pipes continuously, allowing immediate discharge when a sprinkler head activates.

A dry pipe sprinkler system is most appropriate in which of the following environments?

Answer: Unheated warehouses or freezer areas where pipes could freeze

Dry pipe systems use pressurized air or nitrogen instead of water in the pipes, making them suitable for spaces subject to freezing temperatures.

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

Answer: To allow firefighters to supplement system water supply from a pumper truck

The FDC allows fire department pumpers to boost water pressure and supply into the sprinkler or standpipe system during firefighting operations.

Under NFPA 13, what is the minimum distance a standard sprinkler head must be located from a wall?

Answer: 4 inches

NFPA 13 requires sprinkler heads to be positioned at least 4 inches from walls to ensure proper water distribution coverage.

Which fire suppression agent is most appropriate for a Class K kitchen fire involving cooking oils and fats?

Answer: Wet chemical agent

Wet chemical agents are specifically designed for Class K fires because they saponify cooking oils, forming a soapy foam that cools and smothers the fire.

A pre-action sprinkler system requires which condition before water is released into the piping?

Answer: Detection of a fire event by a separate detection system

Pre-action systems require a separate fire detection event to open the pre-action valve before water enters the pipes, providing extra protection against accidental discharge.