ABSTRACT
Development of new nuclear technologies tends toward decentralized small-medium size and modular installations with parameters tailored to a specific applications, resulting from the needs of the market wider than the energy sector, e.g. the production of process heat, hydrogen or hydrazine, which is of great importance for chemical industry. The High Temperature Reactors (HTR) and Dual Fluid Reactors (DFR) are the examples of the attempts for building such industrial applications. However, the implementation of these concepts poses a challenge for safety assessment due to the interfaces between nuclear and non-nuclear parts of the installation, which were not taken into account within the hitherto completed safety studies. This is a driven force for development of new framework for integrated risk assessment of nuclear/non-nuclear combined installations. This article is an attempt to sorting out the most demanding problems related witch this issue and to indicate possible paths for the solutions.
