The goals of this contribution are (i) to summarize the adopted threshold damage criteria used for major accident consequence modeling of fire accidents in Spain and (ii) to numerically compare obtained results with the index-based method used in the Czech Republic. The main objective is to compare complexity of the evaluation of selected European methodologies as far as their application in the case of the same effect and damage model of dangerous flammable substance release, and point out the need to assess the risks from the perspective of emergency planning.