Which statement is NOT true about passive fire protection systems?

• A. They are built into the structure and do not require action to function.
• B. They include fire-resistant walls and doors.
• C. They require activation during a fire to provide protection.
• D. They help limit the spread of fire without any action.

Answer: (C)

Passive fire protection works automatically because it’s built into the building’s structure and materials. Its purpose is to resist heat, withstand fire exposure, and compartmentalize spaces so the fire spreads more slowly and occupants have time to escape. This includes fire-resistant walls and doors, as well as other barriers and assemblies that are designed to maintain structural integrity under fire conditions. Because these features rely on their material properties and construction, they operate without any action or activation.

The statement that it requires activation during a fire is not true for passive protection. Activation is a hallmark of active fire protection systems, which rely on sensors, controls, and devices like sprinklers or suppression systems to respond to a fire. The other ideas—being built into the structure, including fire-resistant walls and doors, and helping limit spread without action—are all characteristics of passive fire protection.