Repowering South Korea's coal plants with Small Modular Reactors
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"A relatively new kind of #reactor design, called a pebble-bed reactor (#PBR), has the advantage of being passively safe, which means that if power for cooling systems is lost, then the reactor can safely shut down by itself. Rather than use highly energy-dense fuel rods like many other reactor designs, PBRs use a large number of low-energy-density “pebbles” as fuel, which contain a small amount of uranium surrounded by graphite. This can help slow the #nuc learreaction and withstand high temperatures." #China https://lnkd.in/grd5-q6k
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Head of Global Energy Procurement & Risk Management | Leading & Developing High Performing Teams | SRM | SCM | Negotiations | Commodity Markets | Gas | Power | Oil | CO2 | PPA | ESG | Decarbonization | Energy Efficiency
„…Czech power utility CEZ AS selected Rolls-Royce Holdings Plc as a potential supplier of small modular reactors as the central European country bets on nuclear energy to move away from fossil fuels. CEZ plans to enter a strategic partnership with Rolls-Royce with a view to building an SMR in the first half of the 2030s, according to a statement from the Industry and Trade Ministry. A landlocked country with limited options for wind and solar energy, the Czech Republic is betting on nuclear power as a way to phase out coal and meet climate targets. Modular reactors can largely be built in factories and shipped in standardized parts for assembly on-site, meaning shorter construction times. In July, the government picked Korea Hydro & Nuclear Power Co. as the preferred supplier of at least two large reactors to start replacing CEZ’s aging fleet of Soviet-era atomic plants. Nuclear accounts for about a third of the country’s electricity, but the project with Rolls-Royce would be its first SMR. The ministry gave no cost estimate on Thursday.“
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The HTR-PM features two small reactors (each of 250 MWt) that drive a single 210 MWe steam turbine. It uses helium as coolant and graphite as the moderator. Each reactor is loaded with more than 400,000 spherical fuel elements (‘pebbles’), each 60 mm in diameter and containing 7 g of fuel enriched to 8.5%. Each pebble has an outer layer of graphite and contains some 12,000 four-layer ceramic-coated fuel particles dispersed in a graphite matrix.
