Supercritical water-cooled reactor system

Supercritical-water-cooled reactor (SCWR) system... [Pg.2723]

The supercritical-water-cooled reactor (SCWR) ( Fig. 58.21) system features two fuel cycle options the first is an open cycle with a thermal neutron spectrum reactor the second is a closed cycle with a fast-neutron spectmm reactor and full actinide recycle. Both options use a high-temperature, high-pressure, water-cooled reactor that operates above the thermodynamic critical point of water (22.1 MPa, 374°C) to achieve a thermal efficiency approaching 44%. The fuel cycle for the thermal option is a once-through uranium cycle. The fast-spectrum option uses central fuel cycle facilities based on advanced aqueous processing for actinide recycle. The fast-spectrum option depends upon the materials R D success to support a fast-spectrum reactor. [Pg.2727]

Supercritical-water-cooled reactor. (From US DOE Nuclear Energy Research Advisory Committee and the Generation IV International Forum, A technology roadmap for generation IV nuclear energy systems, GIF-002-00, 2002.)... [Pg.306]

Types of supercritical water-cooled reactor concepts and main system parameters... [Pg.190]

Safety system in a pressure vessel-type supercritical water-cooled reactor concept... [Pg.206]

Novog, D., McGee, G., Rhodes, D., Yetisir, M., 2012. Safety concepts and systems of the Canadian SCWR. In Proc. 3rd China—Canada Joint Workshop on Supercritical Water-Cooled Reactors (CCSC-2012), Xi an, Shaanxi, China. [Pg.219]

Figure 14.11 The mixed spectrum supercritical water-cooled reactor safety system. ICS, isolation cooling system GDCS, gravity-driven cooling system ACC, accumulators ADS, automatic depressurization system PCCS, passive cote cooling system SLCS, standby liquid control system. [Pg.390]

Supercritical water-cooled reactor (SCWR) safety (Class L) Single-phase coolant passive safety systems. [Pg.476]

In 2002, the Generation IV International Forum selected six systems as Generation IV technologies very-high-temperature reactors (VHTRs), supercritical water-cooled reactors (SCWRs), gas-cooled fast reactors (GFRs), lead-cooled fast reactors (LFRs), sodium-cooled fast reactors (SFRs), and molten salt-cooled reactors (MSRs). As shown in Table 12.1, the spectra of the operating conditions for the six selected types of reactors are versatile [1]. [Pg.441]

Y. Oka, S. Koshizuka, T. Jevremovic and Y. Okano, Systems Design of Direct-Cycle, Supercritical-Water-Cooled Reactors, Transactions ofENC 94, International Nuclear Congress, Vol. 2, 473 77 (1994)... [Pg.69]

J.H. Lee, LOCA Analysis and Safety System Consideration for the Supercritical-Water Cooled Reactor, Doctoral thesis, the University of Tokyo (1996)... [Pg.75]

The supercritical water cooled reactor concept allows both thermal and fast spectrum cores to be designed with the same plant system. Although the specific designs differ between the two types of cores, the basic design principles are the same. This chapter describes the core design of the thermal spectrum core (the Super LWR), in which the supercritical water serves as both the reactor coolant and the neutron moderator. The fast spectrum core (Super Fast Reactor) concept is described in Chap. 7. [Pg.80]

OKA, Y., et al.. Systems design of direct-cycle supercritical water cooled fast reactors. Nuclear Technology,. 109, pp. 1-10 (1995). [Pg.386]

J.H. Lee, Y. Oka and S. Koshizuka, Safety System Consideration of a Supercritical-Water Cooled Fast Breeder Reactor with Simplified PSA, Reliability Engineering System Safety, Vol. 64, 327-338 (1999)... [Pg.73]

Because oxygen, carbon dioxide, methane, and other alkanes are completely miscible with dense supercritical water, combustion can occur in this fluid phase. Both flameless oxidation and flaming combustion can take place. This leads to an important application in the treatment of organic hazardous wastes. Nonpolar organic wastes such as polychlorinated biphenyls (PCBs) are miscible in all proportions in supercritical water and, in the presence of an oxidizer, react to produce primarily carbon dioxide, water, chloride salts, and other small molecules. The products can be selectively removed from solution by dropping the pressure or by cooling. Oxidation in supercritical water can transform more than 99.9 percent of hazardous organic materials into environmentally acceptable forms in just a few minutes. A supercritical water reactor is a closed system that has no emissions into the atmosphere, which is different from an incinerator. [Pg.12]