FAQ
What does a nuclear power plant actually do?
It boils water. Fission in the reactor core heats a coolant, the heat makes steam, and the steam spins a turbine connected to a generator, exactly like a coal or gas plant but with a uranium core as the heat source.
Is nuclear power safe?
Modern plants are designed with defense in depth: physical barriers, redundant cooling and containment. Per unit of energy produced, nuclear has among the lowest death rates of any source, comparable with wind and solar. The two severe accidents, Chernobyl and Fukushima, came from older designs and extraordinary events and reshaped global standards.
What happens to nuclear waste?
Spent fuel is first cooled in pools for years, then sealed in steel and concrete casks that are monitored on site. The volume is small: all US spent fuel ever made would cover a football field about 10 meters deep. Deep geological repositories, led by Onkalo in Finland, are the accepted long term solution.
How long do nuclear plants operate?
Most plants were designed for 40 years but are routinely extended to 60, and 80 year licenses are now being granted in the United States. Aging management covers reactors vessels, cables, steam generators and concrete. Some plants close early for economics, and some, like Palisades, are being restarted.
What is a research reactor?
A small reactor, often under 30 megawatts, built for science and industry rather than electricity. Research reactors produce medical isotopes, test fuels and materials, irradiate silicon for electronics and train engineers. They exist in more than 50 countries.
Will fusion replace fission soon?
Not soon, but progress is real. Fusion reached scientific ignition at the National Ignition Facility in 2022 and record energy at JET in 2024. ITER aims to demonstrate net energy at scale in the 2030s. Most analysts see commercial fusion plants decades away, with fission remaining the workhorse of nuclear power meanwhile.