Overview of Generation IV (Gen IV) Reactor Designs - Safety and Radiological Protection Considerations (original) (raw)
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Generation IV nuclear reactors: Current status and future prospects
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HTGR also takes advantages of material properties to improve their safety, namely: (i) ceramic coated and carbon-based fuels to withstand extremely high temperature; (ii) graphite as the materials of the reactor to avoid chemical reaction producing explosive gases; (iii) plant design features to limit air or water ingress; (iv) single phase and low heat capacity of the helium coolant to minimize stored energy; and (v) inherent nuclear and brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by Badan Tenaga Nuklir Nasional: Jurnal BATAN
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The development of new generations of fission reactors requires the study of a new series of standards to cover the gap between actual codes and the needs generated by this kind of plants (Generation IV systems). Specific issues relate to high operating temperature of gas cooled reactors (above 700°C with a goal of 1000°C) and high fast neutron fluence on core structure in fast reactors. Material standards need to be updated to cover this temperature range and new materials need to be developed too. Also the resistance of materials submitted to irradiation is to be increased. This work draws the attention on what parts of Generation IV pressure equipments are not covered by existing codes and thus require specific normative measures.
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