INFORMATION ON THE FIRM
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Information on the Firm
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| RADON v.o.s. corporation, the first private Czech firm dealing with radon concentration measurements and with radon risk evaluation, was established in 1990.
Its customers are private persons as well as the State Office for Nuclear Safety, Czech Geological Survey, the Ministry of Environment of the C. R., projecting and building firms and other authorities. It has realized more than 32000 expert assessments, during twenty four years it has made radon surveys at more than 17000 areas of different size in various regions of the C. R. Its database contains results of more than 310 000 soil-gas radon concentration measurements.
Beside commercial activities, the firm participated in several research projects (improvement of the uniform method for radon risk classification of foundation soils, local radon risk maps, influence of tectonics on the radon potential, temporal and spatial variability of soil-gas radon concentration, role
of soil permeability and permeability determination, radon database). The results were presented at several international scientific conferences (5th Int. Symposium on the Natural Radiation Environment, Badgastein, 1991, 8th Int. Congress of I.R.P.A., Montreal, 1992, 2nd Int. Colloquium on Gas Geochemistry,
Besancon, 1993, 6th Int. Symposium on the Natural Radiation Environment, Montreal, 1995, 9th Int. Congress of I.R.P.A., Wien, 1996, 4thInt. Colloquium on Gas Geochemistry, Roma, 1997, European Conference on Protection against Radon at Home and at Work, Prague, 1997, Int. Workshop on Radon in the Living
Environment, Athens, 1999, 7th Int. Symposium on the Natural Radiation Environment, Rhodes, 2002, 7th Int. Conference on Gas Geochemistry, Freiberg, 2003, 4th European Conference on Protection against Radon at Home and at Work, Prague, 2004, International Workshop on Radon Data: Valorisation, Analysis
and Mapping, Lausanne, 2005, 2nd European IRPA Congress on Radiation Protection, Paris, 2006, Conference Radon Risk - Time for More Effective Action, London, 2007, 5th Conference on Protection against Radon at Home and at Work, Prague, 2007, 33rd International Geological Congress, Oslo, 2008, International
Radon Symposium - American Association of Radon Scientists and Technologists, Las Vegas NV, 2008, Radon Education Day, Illinois State University, 2008, Radon/Thoron Measurement and Mitigation Workshop, Ottawa, 2008, Conference Radon in Environment, Zakopane, 2009, Radon Education Day, Ciudad Rodrigo, Spain, 2010.).
All measuring devices are regularly verified in accordance with the Czech Law on Metrology. In 1995 we participated at the 27th Environmental Measurement Laboratory Radon Gas Intercomparison in New York, the agreement with the reference value was very good.
A method for soil-gas sample collection that we had proposed in 1990 is now commonly used in the Czech Republic. Radon detectors, sampling systems and other parts of measuring devices of our production were successfully tested all over the world. We have sold radon detectors, sampling
system, equipment for in situ permeability measurements RADON-JOK to several countries (Albania, Austria, Belgium, Brasil, Canada, France, Georgia, Germany, Great Britain, Hong Kong, Hungary, China, Italy, Japan, Luxembourg, Poland, Romania, Saudi Arabia, Slovakia, South Africa, Spain, Switzerland, Ukraine,
Vietnam).
The representative of the firm is the head of Radon Risk Association (ARR), that was established by private firms in 1993 to coordinate the participation in the radon programme with the National Radon Commission (with representatives of all engaged ministries and local authorities).
| Nowadays we offer following services :
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| radon risk classification of foundation soils at building areas
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| indoor radon measurements
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| determination of effective dose at workplaces with a risk of higher exposure to naturally occurring radioactive materials (NORM)
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| research projects
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| E.I.A. - environmental impact assessment
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| Quality Assurance programme in X-ray dental diagnostics
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| equipment for radon risk monitoring - radon detectors, sampling system, equipment for in situ permeability measurements (sold to Albania, Austria, Belgium, Brasil, Canada, France, Georgia, Germany, Great Britain, Hong Kong, Hungary, China, Italy, Japan, Luxembourg, Poland, Romania, Saudi Arabia, Slovakia, South Africa, Spain, Switzerland, Ukraine, Vietnam)
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| accounting / book keeping
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Radon Workshop
With our colleagues from Czech Geological Survey, we organize a regular "International Workshop on the Geological Aspects of Radon Risk Mapping".
The 11th workshop was held in Prague in September 2012. As many scientists from almost all continents (except Antarctic) participated in our workshop during last twenty two years and as the last workshop was very successful, we prepare now the 12th workshop, which should be open in September, 2014.
Intercomparison Measurements
During the 3rd workshop (September, 1996) we organized a field international intercomparison measurement of soil-gas radon concentration. The intercomparison exercise was attended by participants representing 10 different institutions from 8 countries - Australia, Belgium, Czech Republic, Germany, Poland, Russia, Slovakia and Sweden.
The test site was located in the northern outskirts of Prague, at an area characterized by a low soil permeability. For the soil-gas radon concentration measurements the agreement among participants was very good. The intercomparison differences, expressed as a ratio of the standard deviation to the arithmetic mean, were about 20 percent. This is the level that had been previously considered as a realistic target for intercomparison measurements of soil-gas radon concentration. The results indicated that sampling errors were not greater than errors given by calibration differences.
During the 6th workshop (September, 2002) we organized an International intercomparison measurement of soil-gas radon concentration, of radon exhalation rate from building materials and of radon exhalation rate from the ground surface. It was held in Pribram, Czech Republic, and was attended by participants representing 10 different institutions from 8 countries - France, Germany, Hungary, Poland, Romania, Spain, United Kingdom and Czech Republic. A test site for the intercomparison of soil-gas radon concentration and of radon exhalation from the ground was located in the field, at an
area characterised by a high soil permeability and by relatively high values of soil-gas radon concentration. A concrete block made from a slag with a high content of radium was used for the intercomparison of radon exhalation rate from building materials. As for the soil-gas radon concentration and the radon exhalation from the concrete block, a relatively good agreement was observed. The intercomparison differences expressed as a ratio of the standard deviation to the arithmetic mean were about 19 percent in case of radon exhalation from the concrete block, and 28 percent in case of
soil-gas radon concentration, respectively. Larger differences were observed during measurements of radon exhalation rate from the ground surface. The value of the ratio SD/mean was 0.43.
Beside this intercomparison, in 1991 we participated in the intercomparison measurement of soil-gas radon concentration organized during the International Intercomparison of Measurements of Radon and Radon Decay Products in Badgastein, Austria.
| RADON v.o.s., Novákových 6, 180 00 Praha 8 e-mail : radon@comp.cz
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