학술저널
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The results of radon (222Rn) concentrations and working levels (WL) for forty rooms in Kwanak Campus, Seoul National University on granite bedrock of Jurassic age showed that radon concentration have mean value of 3.0 pCi/L and 0.011 for working level. A number of roons where these values exceed the EPA`s action level are five (13%). Ite was also suggested that indoor basement rooms in poor ventilation condition can be classified as extremely high radon risk zone having more than 4 pCi/L and 0.020 WL. It was proved that inflow of soil-gas was a primary factor that governs indoor randon level by comparison of soil-gas radon concentraions with indoor randon concentraions.
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