LoginFour commercially available integrated radon concentration measurement instruments, produced by the same manufacturer in the period between 1996 to 1998, have been tested to study the effect of absolute humidity on the radon counting efficiency.
Bibliographic database Airbase
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High concentrations of natural radionuclides in building materials result in high dose rate indoorsdue to radon and thoron exhalation and the ?-rays emitted from them.
The Nuclear Engineering Section of the National Technical University of Athens undertook the organisation of a European building material radon exhalation rate intercomparison exercise in the framework of the European Research into Radon In Constr
A preliminary indoor radon survey in Greece based on 258 passive detectors, to test the technique andthe statistics, is presented. This paper is an extension of an initial survey (Geranios et al. 1999).
A national radon survey is still lacking for Greece. Some Groups have done several more or lesslocal or extended radon surveys and valuable experience has been gained (Anagnostakis et al.1996, Papastefanou et al. 1997, Louizi 1997).
In the Bihor uranium district there are an operating underground mine and the closed down open pit mine. The open pit mine was operated by the Soviets between 1952-1964, the ore being "exported" to the Soviet Union.
Since 1994 the Radiological Protection Institute of Ireland has been conducting a pilot programme ofpersonal monitoring of workers in workplaces with high radon concentrations.
The average indoor radon concentration in Finnish flats is 80 Bq/m3. Typically walls have been madeusing concrete elements. Building materials are the dominant source of indoor radon.
This paper presents the results of the National Survey of Radon in Dwellings carried out by theRadiological Protection Institute of Ireland (RPII). Radon measurements were carried out in 11,319houses throughout the country.
The work described in this paper is based upon the results of the recently completed National Surveyof Radon in Dwellings [1] carried out by the Radiological Protection Institute of Ireland (RPII).Measurements were carried out in 11,054 dwellings,
The BfS Department of Radiation Protection performs official tasks in the field of radiation protectionfor man and his environment.
The retrospective determination of radon exposure levels in dwellings by means of the measurement ofthe Po-210 surface activity is subject to various uncertainties.
Investigations on the retrospective estimation of radon exposure in homes had already been carried outin international collaboration in the uranium mining regions of Germany since 1994.
The identification of a radon-affected area in the south of Yugoslavia was based on geologicalstructuraland geochemical prospecting data of radioactive and other mineral resources.
In recent years, 210Po implanted in glass artefacts has been used as an indicator of the mean radon gasconcentration in dwellings in the past.
Implanted long-lived radon decay products in glass surfaces have been used as a measure of pastradon exposure in homes.
In the indoor environment short-lived radon decay products deposit onto surfaces. Alpha decaying atoms obtain recoil energy enough to implant into the substrate.
The Austrian radon mitigation joint research project SARAH (supported by the Austrian Ministry ofEconomy and the Government of Upper Austria), a two-year follow up study of the Austrian NationalRadon Project (NRAP), was started in 1996.
This paper describes the new approach to control radiation exposure from natural sources toinhabitants of dwellings that is presently being considered in the Netherlands.
Experimentally, it has been observed that the radon emanation coefficient, determined for geologicaland construction materials, depends principally on the porosity and water content.