Posts Tagged ‘roof’

Decontamination on asphalt can decrease the radiation level only by 20%

According to the decontamination assessment report by MOE, decontamination on asphalt can decrease the radiation level only by 20% at average. (Water pressure is about 5MPa) Even by high-pressure washing with brushing, radiation level decreases only by 28%. When they remove the surface of the asphalt, the average decreasing level is still only 31%. Additionally, [...]

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