Estimation of indoor radon and the annual effective dose from building materials by ionization chamber measurement |
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| Authors: | P. Sola W. Srinuttrakul S. Laoharojanaphand N. Suwankot |
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| Affiliation: | 1. Nuclear Research and Development Group, Thailand Institute of Nuclear Technology (Public Organization), 9/9 Moo 7, Ongkharak, Nakhon Nayok, 26120, Thailand
2. Nuclear Engineering Group, Electricity Generating Authority of Thailand, Charansanitwong Rd, Bang Kruai, Nonthaburi, 11130, Thailand
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| Abstract: | Indoor radon and its annual effective dose from the building materials commonly used in Thailand were reported. Radon emission from samples collected in the closed chamber was measured by an ionization chamber. Indoor radon and the annual effective dose were calculated from radon concentration in the closed chamber. Granite yields the highest annual effective dose. Three samples of granite shown the annual effective dose higher than the annual exposure limit for the general public of 1 mSv year?1 recommended by the International Commission on Radiological Protection. Applying appropriate surface coating, the radon emission from some building materials has decreased substantially. |
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