SHIELDING MATERIAL USED FOR SHIELDING OF RADIATION AND METHOD FOR SHIELDING A RADIATION EMITTED FROM EARTH SURFACE USING THE SHIELDING MATERIAL
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United States of America Patent
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Issued Date -
Jun 19, 2014
app pub date -
Mar 8, 2013
filing date -
Dec 13, 2012
priority date (Note) -
Abandoned
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Abstract
In the present invention, there is provided, as a shielding material for beta rays or gamma rays emitted from an earth surface surrounding a nuclear power plant after an accident, a rubber sheet wherein a synthetic rubber or natural rubber, each containing no vulcanizing agent is compounded with a large amount of sand iron or barite. By placing this shielding material on a radiation-contaminated earth surface, or by reversing the position of the soil of earth surface of higher radiation dose and the position of the soil beneath the earth surface, of lower radiation dose, in such a way that the above-mentioned shielding material is placed between the new upper-position soil of lower radiation dose and the new lower-position soil of higher radiation dose, the dose of radiation emitted from the earth surface can be reduced.
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