New and more efficient propulsion systems are being considered for LNG carriers. One of the proposed alternatives is a combination of a gas turbine with a heat recovery steam generator. This arrangement constitutes a novel approach which needs to be analyzed by a combination of engineering analysis and risk assessments to compensate for the lack of experience. Of specific concern is the high pressure fuel supply system. This paper describes the dispersion and fire analyses performed to better understand the risks involved in this arrangement and identify design improvements. (C) 2008 Elsevier Ltd. All rights reserved.