EXPLOSION AREAS OF FLAMMABLE SUBSTANCES AND THEIR NUMERICAL APPROXIMATION

Abstract

CHEMSAFE® database, developed as a joint project between BAM, PTB and DECHEMA, contains safety characteristics of flammable liquids, gases, dusts and their mixtures. The BAM is responsible for evaluated data on gases and dusts. TRIANGLE software, originally developed by the BAM for the processing, quality assurance and visualisation of measured data describing the explosion area of ternary systems consisting of flammable, inert and oxidising gases. 2D figures in the program represent isothermal or isobaric level curves of the explosion areas. In order to better describe the limiting curve of the explosion range, by the BUTE (Budapest University of Technology and Economics) the Akima-spline interpolation has been replaced by special comonoton Splines in TRIANGLE. For the 3D visualisation of the whole temperature- or pressure-dependent ternary explosion surfaces the TRIGON program of BUTE was extended.