Fire Protection Systems Flashcards

Under NFPA 72, how often must an audible notification appliance (horn/strobe) be tested in a high-rise building?

Answer: Annually

NFPA 72 requires annual testing of notification appliances to verify proper operation.

A Class I standpipe system is designed to be used by:

Answer: Trained fire department personnel only

Class I standpipes provide 2.5-inch hose connections for trained fire department use only.

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

Answer: To supplement water supply to the system from fire apparatus

The FDC allows fire department pumpers to boost or supplement water pressure and flow to the building's fire protection system.

In a high-rise building, a smoke control system using pressurization is intended to:

Answer: Keep stairwells and elevator shafts free of smoke

Stairwell and elevator pressurization maintains positive pressure to prevent smoke infiltration, protecting egress paths.

Which sprinkler head type responds fastest in a fire scenario?

Answer: Quick response (QR) head

Quick response heads have a Response Time Index (RTI) of 50 m½·s½ or less, activating faster than standard heads.

A deluge sprinkler system differs from a pre-action system because:

Answer: Deluge uses open sprinkler heads and discharges water from all heads simultaneously upon detection

Deluge systems have open (unplugged) heads and flood the entire protected area when the deluge valve opens upon detector activation.

When a fire alarm panel displays a 'trouble' condition, the FLS Director should first:

Answer: Investigate the cause, notify the alarm monitoring company, and arrange for prompt repair

A trouble condition indicates a system fault requiring investigation, notification to monitoring, and timely repair to maintain system integrity.