Protection in case of subsequent explosions
Currently available protective solutions for facilities at risk of explosion as well as fire typically rely on pressure venting and subsequent sealing of the affected compartment with self-closing fire barriers (e.g. explosion doors or panels). The compartment is then tightly closed. If an explosion or pressure rise occurs after the original incident, venting is no longer possible. This can result in significant damage to property and personal or even fatal injuries.
The BREX® module, in contrast, stays open after an explosion. It is the only building component rated F90 which, like the scubex® system, ensures safe venting in the event of subsequent explosions.
1,000°C inside, under 100°C on the outside: for the duration of 90 minutes
Tests carried out by a notified body proved that the new system complies with the EN 1634-1 and 1634-3 requirements for F90 building components.
During the fire resistance testing, the temperature inside the fire compartment was 1,000°C. The BREX® module prevented flame emission and the temperature on the outside did not exceed 100°C during the 90-minute test.
The temperature of the combustion gases (which were reduced to a permissible limit) was not higher than that either.
The tremendous energy absorption potential of the flame-quenching element developed by rexotec became evident already during the EC Type Examination tests for the scubex® as flameless explosion venting device: while temperatures inside the housing reached approximately 1,500°C in tests with 99.5% aluminium dust, the surface temperature was measured to be below 100°C.
Determination of the airflow volume
The airflow volume is measured for each version of the BREX® module. The resulting curve chart exactly shows the air or gas volume that passes through the module per unit time at a certain pressure. This is the basis for determining the number of BREX® modules required for any given application.
Flexible facility design thanks to integrated fire and explosion protection
The BREX® module is simply inserted into a wall opening of 550mm x 550mm and bolted directly to the wall. Several modules can be combined to form a larger element: an extremely space-saving solution, which almost disappears inside the wall.
The number of BREX® modules required depends, among other things, on the strength of the wall, the volume of the compartment and of course the items that are likely to cause fire or an explosion. Computer simulation, which delivers sufficiently accurate results, is used to help design the appropriate protection for each plant.
A side effect of the BREX® module is an improved noise insulation.
Of course the BREX® module can also be used to upgrade existing facilities.
We will be glad to help you plan and design the appropriate explosion protection solution for your plant and determine the devices that best suit your specific needs. Contact us to discuss your options and receive a non-binding offer—our competence and cost-efficiency will convince you.