Experimental and feasibility study on steel-plate-reinforced-concrete containment vessel for Japan sodium-cooled fast reactor

Kato, Atsushi ; Negishi, Kazuo; Yamamoto, Tomohiko  ; Akiyama, Yo*; Hara, Hiroyuki*; Iwasaki, Mikinori*

Japan Sodium-cooled Fast Reactor (JSFR) adopts a new concept of a containment vessel called steel plate reinforced concrete containment vessel (SCCV). The SCCV is considered to be effective to shorten construction period thanks for elimination of rebar work at a site compared with applying the reinforced concrete CV. Other than this advantage, the SCCV achieves high quality in building structure, since steel structure parts can be fabricated at a factory prior to the site construction. Although the SC structure has been used for the buildings of LWR etc, it is important to investigate its characteristics under high temperature to adopt the SC structure to the JSFR CV. This paper mainly describes the design study and experiments to investigate potential characteristics of the SC structure under hypothetical sodium combustion in the CV.