Passive protection and compartmentation

Active protection is what intervenes during an emergency, but passive protection precedes it and makes it manageable. This macro area encompasses all design, architectural and construction solutions that aim to contain fire, delay its spread and create safe compartments to protect people and property. It is a silent but fundamental form of security, built brick by brick.

The key role of compartmentation

Fire compartmentation is a design strategy that limits the spread of fire and smoke within a building. It makes it possible to slow the spread of flames, facilitate evacuation and rescue operations, and protect key areas such as power stations, archives and escape routes.

The main sub-categories

• REI doors and fire-resistant windows
  These certified devices ensure structural strength (R), smoke and hot gas tightness (E), and thermal insulation (I). They are essential for securing compartments and are often automated to close quickly in the event of an alarm.
• Fire seals and foams
  These technical materials are used to seal cracks and passages for cables or ducts, while maintaining the integrity of the compartmentation, even at the most vulnerable points. They can withstand high temperatures and ensure the continuity of the fire barrier.
• Fire-resistant sheets and panels
  These are building components that combine thermal insulation and mechanical resistance. They can be integrated into walls, ceilings, and false ceilings to create certified compartments, even in industrial or sanitary environments.
• Intumescent collars and sleeves
  These are solutions designed to protect plastic pipe penetrations. In the event of a fire, they expand to completely seal the passageway and prevent flames and gases from spreading.
• Intumescent and fire-retardant paints
  These products turn into an insulating foam when exposed to heat, which slows the temperature rise of steel or wooden structures. They are useful for protecting architectural elements without altering their aesthetics.

Innovation and regulatory compliance

Passive protection solutions must comply with strict standards (EN 1366, EN 13501, etc.) and are increasingly integrated into BIM projects to simulate fire scenarios and optimise performance. Current research is focusing on developing materials that are lightweight, environmentally friendly and easy to install without compromising on certified resistance.

"Passive protection and compartmentation" is the first line of defence against the devastating effects of fire. Although not as visible as active protection equipment, it is essential for ensuring structural stability and effective compartmentation, as well as providing time to save lives and contain damage.