F80 Fire Safety Systems 3

Question 1

What is the primary purpose of a fire damper installed in an HVAC duct?

Accepted Answer

Prevent fire and smoke from spreading through ductwork

Answer

Fire dampers close automatically when a fusible link melts, blocking the passage of fire and smoke through HVAC ductwork.

Question 2

Under NFPA 25, how often must wet pipe sprinkler systems undergo a full flow test of the main drain?

Accepted Answer

Annually

Answer

NFPA 25 requires an annual main drain test to verify that water supply pressure and flow are adequate.

Question 3

Which type of heat detector operates by responding to the rate at which temperature rises rather than a fixed temperature threshold?

Accepted Answer

Rate-of-rise detector

Answer

Rate-of-rise heat detectors trigger an alarm when temperature increases more than a set number of degrees (typically 12–15°F) per minute.

Question 4

A Class K fire extinguisher is specifically designed for use on which type of fire?

Accepted Answer

Cooking oils and fats in commercial kitchens

Answer

Class K extinguishers use wet chemical agents that saponify cooking oils and fats, making them the required choice for commercial kitchen hood systems.

Question 5

What does a 'listed' fire protection product mean in terms of code compliance?

Accepted Answer

It has been evaluated and found acceptable by a nationally recognized testing laboratory

Answer

A listed product has been tested by an organization such as UL or FM Global and found to meet specific performance standards for its intended use.

F80 Practice Test

F80 Practice Test

F80 Fire Safety Systems 3