The OPR-1000 is a South Korean nuclear reactor design developed by Korea Hydro & Nuclear Power (KHNP). It is a Generation II+ pressurized water reactor (PWR) that represents an evolution of earlier reactor designs used in South Korea. The "OPR" stands for "Optimized Power Reactor," and the "1000" refers to its electrical output capacity of approximately 1,000 megawatts (MW).
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