Explosion relief panels and flame arrestors
An explosion relief panel is a one-time use of overpressure protection and has the function of protecting an installation against overpressure and/or underpressure. These panels are used in a closed system to acutely create an opening when a preset pressure occurs, so the pressure can be released. This way the system or installation is protected against unwanted overpressures and explosions.
If the distance from an outlet channel to the outside is too long, a flameless pressure relief must be used. For this a combination of an explosion relief panel and a downstream flame arrestor can be used. Then, during an explosion, the high flame temperature over a large surface (for example mesh) is abruptly lowered. This also reduces the volume of the expanded air in the explosion abruptly and reduces the explosion pressure. The flame extinguisher also has a flame-retardant effect, but the burnt and unburned dust (smoke) cannot be stopped. The conventional flameless pressure relief is therefore always in combination with dust and smoke release in the installation room.