Dane Sabo
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M .task/backlog.data M .task/completed.data M .task/pending.data M .task/undo.data A Class_Work/nuce2101/final/latex/SABO_NUCE2101_FINAL.pdf M Class_Work/nuce2101/final/latex/main.aux M Class_Work/nuce2101/final/latex/main.fdb_latexmk M Class_Work/nuce2101/final/latex/main.fls
24 lines
1.1 KiB
TeX
24 lines
1.1 KiB
TeX
\section*{Problem 9}
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\subsection*{Part A}
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The boron concentration must be less than 1200ppm.
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The plant startup within 10 hours of full power shutdown must have a higher
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xenon-135 concentration than a plant that has been shut down for 25 days. As a
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result, boron must be diluted to compensate for the xenon poisoning effect.
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\subsection*{Part B}
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At first boron must be concentrated to reduce power. At this point, xenon will
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increase in the core as xenon burnup reduces. To compensate with this additional
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poison as power falls, boron must be diluted to maintain 50\% power. Then, the
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xenon concentration will fall off as it decays (over days), so boron will need to be
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concentrated as the xenon negative reactivity diminishes and settles at 50\%
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power. The boron concentration will be HIGHER at the end of the transient than
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at the start. An example of the xenon concentration can be found on page 11 of
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'Xenon Transient Information Rev 2024-2'.
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Samarium on the other hand will not have a significant effect as the amount of
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time spent on maintenance will be too short for significant samarium effects to
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build up.
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