Abstract
This paper describes how Denmark has implemented the directive 2013/59/EURATOM, laying down basic safety standards for protection against the dangers caused by exposure to ionising radiation. Ionising radiation develops from radon. Furthermore, the paper describes a procedure to determine the value of the mean year concentration of radon based on short-term measurements. Procedures are described both for radon measurements in the indoor environment of buildings used for accommodation and buildings used for other purposes such as workspace, day-care for children and schools. In addition, the paper argues for the described requirements that short-term measurements should follow in order to be used for estimating the concentration of radon indoors as the mean year value.
Highlights
Radon-222 develops from the radioactive decay of radium-226 and has a half-life of 3.8 days
Radon exposure must be taken seriously in the struggle against radon-induced lung cancer due to the large number of people who are exposed daily in buildings and especially in residential buildings [4]. If people spend their whole life in a house with an average radon concentration in the indoor air that exceeds 200 Bq/m3, their risk of getting lung cancer is higher than 1%
Measurements must fulfil a number of requirements i.a. that measurements must be made between 1 October and 30 April; indoor ventilation must work properly; duration of the measuring period must be at least 60 days; location of measurements in the measuring period must be fixed; up to 1⁄4 of the measuring period may include abnormal conditions in the way the building has been operated and how the radon concentration in the indoor air is affected by the outdoor climate
Summary
Radon-222 develops from the radioactive decay of radium-226 and has a half-life of 3.8 days This noble gas infiltrates through soil into buildings and, if it is not evacuated, there can be much higher exposure levels indoors than outdoors [1, 2], which is where human exposure occurs [3]. Radon exposure must be taken seriously in the struggle against radon-induced lung cancer due to the large number of people who are exposed daily in buildings and especially in residential buildings [4] If people spend their whole life in a house with an average radon concentration in the indoor air that exceeds 200 Bq/m3, their risk of getting lung cancer is higher than 1%. The paper argues for the requirements that must be followed and be fulfilled by shortterm measurements in order to be used for estimating the concentration of radon in the indoor air representing the mean year value
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