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is3_113 - Persons who eat a large amount of seafood are...

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Unit 5 Other Radiological Hazards 5-5 Radon concentrations in indoor air can be easily controlled using two main methods. Covering walls with plastic materials or thick coats of paint and filling gaps in floors combined with diverting the gas to the open air is an effective control method. Ventilating crawl spaces with fans to remove the radon concentrated air before it gets into living or working spaces in structures is also an effective control method. Radon and Ventilation Activity in Food Other daughter products from the decay of Uranium and Thorium contribute to an individual’s radiation dose from natural sources in food that is eaten. Lead-210 and Polonium-210, for example, are concentrated in fish and shellfish.
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Unformatted text preview: Persons who eat a large amount of seafood are getting a higher dose from this source of natural radiation than those who don’t. Like many of the other situations discussed in this section, some areas of the world have certain foods higher in some radionuclides due to the particular rocks and minerals prevalent in the soil where the crops or livestock are grown. MAN-MADE SOURCES Man-made sources of radiation that individuals are routinely exposed to include medical sources, nuclear fallout, and consumer products . Medical Sources Medical sources of radiation are the greatest source of man-made radiation exposure. Radiation is used both in diagnosing and treating disease....
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