Very High Temperature Reactor (VHTR) Risk and Safety Assessment White Paper - Rev. 3 - 2015

The purpose of this paper is to investigate the feasibility of applying the Integrated Safety Assessment Methodology (ISAM) to the VHTR system. Developed by the Generation-IV International Forum (GIF) Risk and Safety Working Group (RSWG), ISAM consists of a set of tools to aid in safety design of advanced reactor concepts. This paper summarizes the ISAM tools, provides an overview of VHTR technology, and the preliminary assessment of ISAM tools in application to VHTR safety design.