Abstract: | A small size plant for seawater desalination using nuclear heating reactor coupled with MED process was developed by the institute of Nuclear Energy Tech- nology, Tsinghua University, China. This seawater desalination plant was designed to supply potable water demand to some coastal location or island where both fresh wa ter and energy source are severely lacking. It is also recommended as a demonstration and training facility for seawater desalination using nuclear energy. The design of small size of seawater desalination plant couples two proven tech- nologies: Nuclear Heating Reactor (NHR) and Multi-Effect Destination (MED) pro cess. The NHR design possesses intrinsic and passive safety features, which was demon strated by the experiences of the project NHR-5. The intermediate circuit and steam circuit were designed as the safety barriers between the NHR reactor and MED de salination system. Within 10-200 MWt of the power range of the heating reactor, the desalination plant could provide 8000 to 150,000 m~3/d of high quality potable water. The design concept and parameters, safety features and coupling scheme are presented. |