Safety regulations concerning fire risks on offshore platforms are more and more severe. These demands have to be included in the engineering process in order to obtain the certification of the structure and to optimise the fire protection devices which have an influence on platform cost and weight. Numerical simulation can be a powerful and cost effective tool to meet these requirements. In this paper, we present and discuss the several types of fire simulations that have been performed in a recent engineering study of a fixed platform. Several kinds of fire are treated: pool fire at sea level or near tanks, jet fire due to riser or process pipe breaking... Different localisations of fire on platform are studied : on tubular frames of legs, upper and bottom decks of huh, inside compartments... Various systems of protection are analysed and optimised : passive fire protection, deluge system, flooded members... A synthesis of the various simulation methods is made. Thermo-mechanical calculations including dead weight, thermal effects and environmental conditions are presented for several cases. On going research and development works, conducted to improve these simulation methods, are presented.
