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A comment on First contact made with melted nuclear fuel at Fukushima plant. Parent comment

Re:First contact made with melted nuclear fuel at Fukushima ... by cladari on Saturday February 16, 2019 @11:15AM (#19179261)
In a pressurized water reactor the water is the moderator (bounces and slows the neutrons) and dissolved boron is the poison used to control the reaction.
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