Development of ODS tempered martensitic steel for high burn up fuel cladding tube of SFR

Otsuka, Satoshi   ; Tanno, Takashi  ; Oka, Hiroshi   ; Yano, Yasuhide  ; Tachi, Yoshiaki  ; Kaito, Takeji ; Hashidate, Ryuta ; Kato, Shoichi ; Furukawa, Tomohiro  ; Ito, Chikara   ; Yoshitake, Tsunemitsu 

Oxide Dispersion Strengthened (ODS) steel has been developed worldwide as a high-strength and radiation-tolerant steel used for advanced nuclear system. Japan Atomic Energy Agency (JAEA) has been developing ODS steel as the primary candidate material of Sodium cooled Fast Reactor (SFR) high burn-up fuel cladding tube. Application of high burn-up fuel to SFR core can contribute to improvement of economical performance of SFR in conjunction with volume and hazardousness reduction of radioactive waste. This paper described the current status and future prospects of ODS tempered martensitic steel development in JAEA for SFR fuel application.