• expatriado@lemmy.world
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      2 days ago

      my comment is oversimplified and partly joke, but nuclear power plants use mostly uranium fuel pellets, which are inserted in metal fuel rods and these into another metal container called fuel assemblies, before the are lowered into the water pool, so fuel and water don’t touch each other, and the vapor cycle is a closed system

      • wia@lemmy.ca
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        2 days ago

        It also only would contaminate the things in water and not the water itself if i understand correctly

    • girsaysdoom@sh.itjust.works
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      2 days ago

      From what I remember, the water that is near the fissile material is in its own closed loop tank and has heat exchangers that transfer heat to another water loop that goes to the turbines.

      • mercano@lemmy.world
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        1 day ago

        In a pressurized water reactor, yes. In boiling water reactor, steam is formed in the reactor vessel and is sent directly to the turbines. While in operation, the turbine area is too radioactive for human presence. Fortunately, the radioactive byproducts carried in the steam are all very short lived, so it only takes a few minutes cool off.