Questions have been raised about the economic implications of the regulations governing radon gas level identification and remediation in buildings. Attempts to answer the economic questions related to proposed policy have been varied and criticised for lack of scope and comparability. It is imperative therefore that a general model for the evaluation of radon remediation programmes is adopted by participating interests to ensure the comparability and usefulness of ratios in decision making.
Greek Atomic Energy Commission (GAEC) is the regulatory and competent authority on radiation protection matters. In order to facilitate the implementation of the new European BSS Directive, which refers to the Radiation Protection at work places with increased levels of natural radiation exposure, GAEC has upgraded its present infrastructure specifically in the field of dosimetric measurements and monitoring
The radium distribution of the soil is one important parameter governing radon emanation. The present study’s main objective is to investigate radium distribution in different Swedish soils, using chemical selective sequential extraction, and to compare t
After more than 35 years operation the uranium mining and milling facilities near Pécs city in Hungary were finally shut down in 1997. One of the most important and most complicated tasks is the remediation of tailings ponds because of the complexity of c
The effect on fertility of chronic exposure of female Wistar rats in “Avram Iancu” uranium mine to high Radon-222 and Radon-222 progeny concentrations in air was investigated. Time variations of fertility index as well as the histological aspect of ovarie
A survey of radon concentration in kindergartens in area of town Piekary ?l?skie, affected byunderground mining, have been performed. Measurements were done in cellars and classrooms on thegroundfloor. The highest value of radon concentration in the classroom during long-term monitoringwas of about 228 Bq/m3. During the survey we proved a correlation between concentrations of radonin soil gas and in buildings.
Nowadays augmented risk of a lung and larynx cancers as a result of the exposure on radon is not onlyknown fact, but also the most important effect of the influence of the natural radioactivity on thegeneral public. There is no doubt, that quite often miners are more endangered by enhanced radonexposures as other members of the society.Upper Silesia is the region of the extended underground mining industry, mainly of a hard coal, butalso the metal ore mining.
The effectiveness of various insulating materials for limiting radon entry into houses has beeninvestigated experimentally in 90 existing houses and in laboratory conditions. Each material hasbeen evaluated according to several aspects - placeability, durability, tear resistance and diffusionproperties. The results of the radon diffusion coefficients measurement in more than 80 insulatingmaterials are summarized. We have found out that great differences exist in diffusion properties,because the diffusion coefficient varries within four orders from 10-13 m2/s to 10-10 m2/s.
The article presents a part of the measurements around a closed coal mine in an area of 2 km2 where newbuildings are planned. Because of high content of natural radioactivity (U and 226Ra) in coal and fly ash inthis area, high radon concentrations were measured. Monitoring consists of measurements on the coal minerepository and around it. Values of radon exhalation rates were in the range from 9 x 10-3 to 4 x 10-1 Bqm-2s-1. On the areas rich with coal and coal ash, higher radon exhalation rates were determined during allperiods of the year.
Sub-slab depressurization (SSD) systems in the form of radon sumps are being considered as themost effective and the cheapest radon remedial measures for existing buildings. Detailedmeasurements were made in 17 family houses that had been remediated using this system.Measurements results indicate that the performance of SSD systems depends substantially on thesoil permeability and on the presence or absence of a drainage layer beneath the floors.
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