Emergency reactor core cooling structure
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United States of America Patent
Stats
-
Apr 18, 1989
Grant Date -
N/A
app pub date -
Feb 26, 1987
filing date -
Feb 28, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An emergency reactor core cooling structure comprises a flow passage provided on an upper core plate so as to extend downward therefrom into the core. The flow passage has an orifice member at a lower portion thereof. The orifice member has such a portion that the cross-sectional area of the flow passage is made minimal at the orifice member. The flow passage causes the cooling water held on the upper plate by vapor flowing up on an accident to flow down therethrough, whereby the core is cooled rapidly.
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