An Upper-Austrian fire-safety engineering consultancy near Linz producing practical fire-protection concepts, escape-route concepts, explosion-protection concepts and CFD fire simulations. It is also an accredited testing and inspection body (Prüf- und Inspektionsstelle) rather than a product or installation firm. Its analyses aid the professional judgement of the responsible designers. Its DI Gerhard Greßlehner is certified in the Austrian court-expert list under both Fachgebiet 08.50 Brandermittlung und Explosionsermittlung and 09.45 Brandschutzwesen.