In addition to hand-held fire extinguishers, what is an internal fire protection system?

An internal fire protection system refers to a setup that is designed to control, suppress, or extinguish fires within a building or facility, contributing to the overall safety of the structure and its occupants. Smoke control systems are specifically designed to manage smoke movement and reduce its impact during a fire event. They work by either exhausting smoke from an area or preventing its spread, allowing for safer evacuation and access for firefighters. This functionality is crucial in enhancing the effectiveness of a building's fire safety measures.

In contrast, while the other options—fire department connections, water hydrants, and fire escapes—play important roles in overall fire safety, they are not categorized as internal fire protection systems. Fire department connections and water hydrants primarily serve as external resources for fire-related emergencies, providing water access to firefighting crews, while fire escapes are structural features designed for safe egress from a building during a fire but do not actively suppress or control fire within the structure.