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View Diary: Turkey Point Nuclear Plant adds 400MWs! (42 comments)

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  •  Station Black-out (0+ / 0-)

    I've always had a hard time figuring out why nuclear power plants aren't allowed to use the very power they're generating to run all the other auxiliary equipment in the plant.  Why do they have to rely on power brought in from elsewhere?  You would think that the power they were generating would be the most reliable inside the station.  

    •  This is a function of the turbine, Jaguarpete. (3+ / 0-)
      Recommended by:
      northstarbarn, psilocynic, emobile

      Turbines have minimum steam flow lower limits. Usually about 15 to 25% of maximum load depending on type and size. So this % is way and above the minium load of the unit.

      A 1150MW gross output plant uses something like 50MWs for it's station use. Or slightly under 5% of the total output. This is fine when the reactor is outputting say it's permitted minimum of, say, 450MWs but can't be achieved give my guestimated minimum load of 15% or 160MWs.

      So that's the basic reason. Excellent question BTW.

      Dr. Isaac Asimov: "The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny ...'"

      by davidwalters on Mon Apr 22, 2013 at 12:16:47 PM PDT

      [ Parent ]

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