Palonsuojan

Palonsuojan is a Finnish term referring to a fire protection barrier or fire separation within building design. It denotes elements and assemblies intended to confine a fire to a defined area, slowing its spread and protecting occupants, property, and escape routes. Palonsuojan is a key component of passive fire protection, complementing active systems such as alarms and extinguishing devices.

In practice, palonsuojan comprises fire-rated building elements and assemblies, such as walls, floors, ceilings, doors, and glazing that are designed to resist fire for a specified period. The fire resistance is expressed as a rating, typically measured in minutes (for example EI 30, EI 60, EI 120), indicating the ability of an assembly to retain integrity and insulation under fire exposure. Ratings are established through standardized testing and/or approved deemed-to-satisfy solutions and are documented in construction drawings and specifications.

Typical applications include separating different occupancy areas (for example between apartments and corridors), enclosing stairwells and mechanical rooms, and delineating fire compartments within larger facilities. Palonsuojan elements also require proper detailing at joints, penetrations, and openings, with appropriately rated seals and closures to maintain the overall fire resistance.

Regulatory framework and standards governing palonsuojan in Finland draw on national building regulations and international standards, such as EN 13501-2, alongside local amendments. Designers must ensure correct selection, installation, and maintenance of palonsuojan elements, as damage or alterations can reduce their effectiveness. Regular inspections and documentation help verify ongoing compliance with fire safety requirements.