Generation IV nuclear reactors offer advantages such as proliferation resistance, safety, and sustainability compared to earlier ones. They use reprocessed nuclear fuels that can enable sustainable energy development. As they target at minimizing the use of pressurized components and water as coolants, an improvement in the operational safety factor is expected. The use of reprocessed fuels also helping in disposing wastes with much less radioactive content. USA, Europe, China, South Korea and Russia are some of the countries actively involved in developing Generation IV reactors and associated technologies. The 'generation IV' concept is still in design stage and is expected to reach demonstration and pilot scale around 2025 to 2030.
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Keywords: generation IV reactors, nuclear fuel cycle, VHTR, thermal reactors, SCFR, SCWR, SFR, LFR, fast reactors, NGNP, ESNII, advanced reactors, GIF