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In commercial power plants, there are two to four steam generators per reactor; each steam generator can measure up to 70 feet (21 m) in height and weigh as much as 800 tons. Each steam generator can contain anywhere from 3,000 to 16,000 tubes, each about .75 inches (19 mm) in diameter.
Dresden 1 Nuclear Flow Diagram featured a secondary steam generator for load following. The reactor featured a dual cycle, with steam coming from both the stream drum and steam generators. This made for rapid response to changes in power demand. Reactor power was regulated by actuation of the secondary admission valve by the turbine's governor.
Curium-250 is the isotope with the lowest atomic number that primarily decays by spontaneous fission, a process that releases many times more energy than alpha decay. Compared to plutonium-238, curium-250 provides about a quarter of the power density, but 95 times the half-life (~8300 years vs. ~87 years).
Combustion turbine, heat recovery steam turbine generator, and steam generation boiler [69] Tom G. Smith Power Plant: 57.5: 30 MW combined-cycle generator [70] Treasure Coast Energy Center: 318: 1-unit natural gas [71] Turkey Point Nuclear Plant: 1253 1 combined-cycle gas-fired turbine University of Florida: 42.5: 1-unit combustion turbine ...
While the average price of solar and wind have dropped dramatically over the past 15 years, nuclear’s has been steadily rising. In 2009, solar cost three times what nuclear did, and wind was ...
In 2022, the four original steam generator units installed in the 1970s on unit 2 were replaced with units made from Inconel 690 which is more resistant to stress corrosion cracking and expected to last the life of the plant. Replacing the units involved cutting two large holes in the containment building. Because of radioactive contamination ...
Of historical significance: The world's first nuclear power generated electricity was produced in September 1948 with the X-10 Graphite Reactor at Oak Ridge National Laboratory, Oak Ridge, Tennessee, where among other firsts, this first ever electricity generated by nuclear power occurred utilizing a Jensen #50 steam engine and generator. A ...
The core is surrounded by a steel neutron reflector which increases reactivity and saves ~0.1wt% U-235 enrichment. In addition, the US-APWR uses more advanced steam generators (compared to the APWR) which creates drier steam allowing for the use of higher efficiency (and more delicate) turbines.
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