The basic R&D efforts made at the early development stage have been extended to develop the conceptual designs of KALIMER 150 and 600, and the basic key technologies over the past ten years since 1997 under the revised nuclear R&D program. According to the Nuclear Technology Roadmap established in 2005, an SFR was chosen as one of the most promising future types of reactors which could be deployable by 2030.

The KALIMER-600 features a proliferation-resistant core without blanket and a decay heat removal circuit (PDRC) using natural sodium circulation cooling for a large power system. In addition, a shortened IHTS piping and a seismic isolation are incorporated into the KALIMER-600 design. The KALIMER-600 conceptual design, which evolved on the basis of the KALIMER-150 design, was selected as

Figure 15.3 SFR R&D program (Korea). PRIDE, PyRoprocess Integrated inactive DEmonstration.

one of promising Gen-IV SFR candidates. R&D efforts have been made on the development of advanced design concepts including a supercritical CO2 Brayton cycle energy conversion system, design methodologies, computational tools and sodium technology.