Natural-circulation boiling water reactor and chimney therefor
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United States of America Patent
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May 30, 2017
Grant Date -
Nov 19, 2015
app pub date -
Nov 16, 2012
filing date -
Nov 16, 2012
priority date (Note) -
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Abstract
A chimney arranged inside of a reactor pressure vessel of a natural-circulation boiling water reactor is provided. The chimney includes plural flow channels which guide a steam-water two-phase flow generated in a reactor core to the upper part of the reactor pressure vessel. Each of the flow channels is formed by plural flow channel separation walls whose lower-most part is supported by a chimney lattice plate. Chimney spacers that support a horizontal load are arranged between the flow channel separation walls of the adjacent flow channels. Chimney support rings that support the horizontal load are arranged at the outermost periphery of the plural flow channels that are supported by the chimney lattice plate.
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