One of the most widely applied protective systems, to reduce the effects of an explosion, is explosion pressure release (venting). There is a disadvantage to venting in that, with an explosion, there is considerable (fire) damage which can result in major repair costs and production losses. In addition there is a growing resistance against the venting of large flame jets and combustion products, because of environmental and safety issues. A good alternative to explosion venting is explosion suppression. If designed, installed and maintained properly, explosion venting is a reliable protective technique. The main obstacle to the widespread acceptance of suppression technology, apart from the initial investments, is the intensive maintenance, which can have considerable impact both on production costs and efficiency.