Radon		Radiation Exposure

Pictures

4D sources of radiation exposure gif

his home that was more serious than anything he had encountered in the nuclear power plant radon gas The sources of radiation exposure for the average person are shown below Naturally occurring radioisotopes in the environment account for 82 of average exposure while the remaining 18 comes because of human activity The radiation that is a normal part

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autoradiography on polaroid

this is the setup for the result click <a href= http flickr com photos bionerd 3065730281 target= blank >here < a>

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radon testkit jpg

high indoor radon level But you and your family are most likely to get your greatest exposure at home where you spend most of your time You should test for radon Testing is the only way to know if you and your family are at risk from radon EPA and the Surgeon General recommend testing all homes below the third floor for radon EPA also

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autoradiography framed

the bottom right says roughly translated <i> and from the distance of deep space radio stars are transmitting < i> it s a quote from kraftwerk dedicated to pulsars and quasars =

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autoradiography on polaroid

<b>sources < b> uranium 238 caesium 137 strontium 90 barium 133 radium 226 americium 241 thorium 232 see notes <b>exposure < b> 24 hours see the link below for a picture of the setup

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radiation exposure jpg

where radiation is a mysterious substance to most people Radiation is energy that travels in rays or particles While it is invisible to our senses it is actually very easily measured Natural radioactivity is found in everything from water soil and air to the food we eat It even naturally exists within our own bodies Radon is a naturally occurring radioactive gas which

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radon graph1 gif

may have a synergistic relationship Either smoking or radon exposure can independently increase the risk of lung cancer however exposure to both greatly enhances that risk Assumes an average indoor radon concentration of 1 3 pCi l As you can see radon is by far the greatest single source of radiation exposure to the public

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f1 radiation fs 167199 gif

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radon gif

The potential hazard of radiation exposures to radon gas and its daughter products from natural background has been highlighted in the press and has become a matter of concern and a source

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radon gif

which is odorless colorless tasteless and chemically nonreactive As it escapes from the soils and rocks of which it is trapped it enters the water we drink and the air we breath Since distribution of uranium in the earth s crust varies from place to place so does the prevalence of radon gas In areas where surface rocks contain a high concentration of uranium

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monitor01 jpg

Canadians Health Canada has established a radon guideline that recommends an action level of 200 Bq m3 radon in air For radon progeny this is equivalent to 27 mWL Home and school radon monitor The Radiation Safety Institute has developed a radon monitor for measuring exposure to radiation in homes schools

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221 microSievert

What my dosimeter read after one day of use don t worry I didn t receive that dose That s about 10 of the yearly radiation dose to an average person from cosmic radiation K 40 in the body radon in the house ground medical exposure etc

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fig1 jpg

Figure 1 Average indoor radon concentration by department in France Gambard et al 2000 Several studies from different

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radexposure gif

In the Rumanian uranium mine Avram Iancu high radon concentrations of up to 60 000 Bq m3were even monitored in recent times due to insufficient ventilation of the mine RSRP1993 According to Jacobi1992 the doses received in Wismut s mines in the early years should not be estimated at 150 WLM but at 200 WLM per year The true value can hardly be determined

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radonmapsmall gif

radon levels are the amount of uranium in the bedrock fault lines and fissures in the bedrock allowing easy movement of radon from deep in the earth and residual soil from uranium mining There is no lack of geographic radon information available USGS publishes geologic radon potential books which give thorough information on local radon conditions They can be ordered

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Distroyed reactor jpg

radon The radiation exposure is the part of our life What is the level of risk What is acceptable risk What we have to do in the case of nuclear or radiological accident

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fig1sm jpg

Figure 1 Average indoor radon concentration by department in France Gambard et al 2000 Several studies from different

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nosmoke2 jpg

ever smokers and because of the synergism between smoking and radon many of the cancers in ever smokers could be prevented by either tobacco control or reduction of radon exposure Ever smokers is a group that includes anyone who has ever smoked regardless how long they smoked or how long ago they quit The never smokers are never smokers The first quote uses

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fig2 jpg

Figure 2 Proportion of individuals and deaths attributable to indoor radon exposure in France in 1999 according to the EAD model BEIR 1999

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Radiation Synergy UNSCEAR1982f18 gif

categories of smokers are shown in Figure XVIII A3 Figure XVIII Mortality from respiratory cancer as related to radon daughter exposure in different smoking groups A3

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