Conceptual design of small-sized HTGR system, 1; Major specifications and system designs

Ohashi, Hirofumi ; Sato, Hiroyuki  ; Tazawa, Yujiro; Yan, X. ; Tachibana, Yukio 

In the present study, major specifications of a small-sized HTGR system (HTR50S) aiming to deploy in developing countries in 2030s are investigated. In addition, technology to be demonstrated (e.g. increasing power density, reduction of the number of uranium enrichment in the fuel, increasing the burn up, side-by-side arrangement between the reactor pressure vessel and the steam generator) are identified. Also, a system design of HTR50S which offers the capability of electricity generation, cogeneration of electricity and steam for a district heating and industries, is performed. Furthermore, a market size for small-sized HTGR systems are estimated.