The hazard intensity for which a facility is designed or retrofitted for, strongly affects the safety as well as the economy. The problem is however involved with a sophisticated and uncertain phenomenon of seismicity of the region and ground behavior. The first step in design or retrofit of facilities in an engineering project is to identify the design basis level of hazard in the site. Identifying the sources, the mechanism of generation of hazard (eg. Faulting mechanism), the variation of the amplitude of the generated hazard on the way to the objective site and finally the site effects are the main subjects under study for hazard analysis of a site. BLR, using the new techniques for deriving the outputs from each step provides the hazard analysis report with a high level of accuracy.