The Indoor Vent was on display for the first time at EXPLORISK 2002 in Nuremberg Germany from October 8-11, 2002. Indoor Explosion Vents are used where equipment such as silos, dust collectors,cyclones,sifters, dryers, storage bins and other related process equipment where dust clouds can be produced and there is a risk of a dust explosion. In the event that venting via ducting to a safe area is not feasible, then Indoor Explosion Venting or flameless explosion venting can be considered a cost effective option. Care must be taken that the enclosure must also be protected with explosion isolation techniques to prevent flame jet ignition inside the enclosure. All certification is based on ignition being initiated inside the enclosure to be protected. For explosion isolation techniques -see also our section on products by ATEX Explosion Protection in our products section As part of this new product release , Brilex Indoor Explosion vents are available in rectangular or circular bolting configurations utilising Blilex type GE , domed single section design explosion vent.