Fire standards

When a fire occurs in a building, all occupants must be able to leave it safely. Everyone must be able to evacuate through zones where the fire will not propagate. In other words: the building must be divided into seperate compartments. To avoid fire extending to other compartments, it must be stopped by fire-repellent materials. The specifications for these fire-repellent materials are listed in the fire-norm NBN 713.020. The NBN 713.020 is the Belgian norm that describes the test procedure for the fireproof elements. It simulates a fire and studies the reaction of the fireproof elements. A test construction is installed in front of an oven (3m x 3m). The temperature within the oven follows the standardized ISO curve: the temperature of the oven reaches 821°C after 30 minutes and 925°C after 60 minutes. One side of the door faces the oven; the other side is called the public side.

The fireproof elements must maintain their integrity during and after the test.

The fireproof elements must provide a hermetic seal and prevent the passage of flames or gas.

The increase in temperature measured on the element may not exceed 140°C as an average or 180°C at any point location.