Category Archives: Handbook of Small Modular Nuclear Reactors

Republic of Korea: System Integrated Modular Advanced Reactor (SMART) design

As with many SMRs, the primary goals of the System Integrated Modular Advanced Reactor (SMART) design are enhanced safety and reliability. SMART is a 100 MWe integral system with 57 half-height (2 m) fuel assemblies using a standard 17 X 17 pin array design. Reactivity control includes control rods, burnable poisons within the fuel and soluble boron within the primary […]

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Incentives and challenges for achieving commercial deployment success

The question arises why interest in SMRs has re-emerged and burgeoned over the last decade. The reason is that SMRs offer an attractive vehicle to surmount the current barriers to deployment of the current generation of large-rated advanced light-water plants (the Generation III+ designs) and alternative coolant (Generation IV) plants. Principal among these barriers is the large initial investment required […]

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Gas-cooled reactors

Gas-cooled reactors are the second most common reactor technology used for commercial power application, due largely to the several carbon dioxide-cooled reactors deployed in the United Kingdom. All gas-cooled SMRs under development today use helium as the primary coolant. Both Germany and the United States previously built and operated helium-cooled test or demonstration reactors, and China and Japan each currently […]

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Russian Federation: ABV-6M design

The ABV-6M is one of two floating commercial nuclear power plant designs being developed in the Russian Federation derived from reactor designs used for propulsion of ice-breakers. It is an integral pressurized water reactor except that the gas pressurizer and control rod drive mechanisms are external to the reactor vessel. The ABV-6M uses natural circulation of the primary coolant. Fuel […]

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The two major incentives for SMR deployment are as follows. Reduction of initial investment and associated financial risk The modular concept allows the investor to achieve the level of total power supply desired by time-sequenced construction increments. Not only does each module increment cost less than that of the large monolithic competitor plant, but the time profile of capital […]

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Addressing the safety imperative

Nuclear reactor safety is achieved through a sound design and the use of safety systems, i. e. protective systems which counteract the accident and/or attenuate its consequences. The ideal scenario would be a design so perfect that no safety systems are necessary, that is, a design where accidents either cannot occur or, if they do, their consequences are acceptable. Obviously […]

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