Changes
Jump to navigation
Jump to search
no edit summary
<span style="font-size:115%;"> '''Everyone, everywhere, is exposed to radiation all the time. It is a natural part of the environment in which we live.''' </span>
<span style="font-size:115%;"> '''People are also exposed to man-made radiation, predominantly in medicine, but also from other sources. For some, radiation exposure is part of their work.'''</span>
{| class="wikitable" style="background-color: #ffffff; border-color: #ffffff;" width="100%" data-mce-style="background-color: #ffffff; border-color: #ffffff;"
|- style="vertical-align: top;"
| style="width: 50%;"|''Terrestial radiation'' comes from the Earth: everything is naturally radioactive, including rock, soil, water, air, animals, plants, and food. The average [[Absorbed, Equivalent, and Effective Dose | dose]] from terrestial radiation is 2 mSv per year. More than half of this is from radon in your home.
[[Cosmic Radiation in Aviation | ''Cosmic radiation'']] comes from the Sun and outer space. The average [[Absorbed, Equivalent, and Effective Dose | dose]] from cosmic radiation is 0.4 mSv per year.
''Medical procedures'' make up most of the man-made dose, by far. The average [[Absorbed, Equivalent, and Effective Dose | dose]] from medical diagnosis is 0.6 mSv per year.
Some people are also exposed to radiation as part of their work, from industrial uses like nuclear power plants, from accidents, and even from leftovers of atmospheric nuclear testing. On average, the [[Absorbed, Equivalent, and Effective Dose | dose]] from this is very small, about 0.01 mSv per year.
These numbers are worldwide averages. Some people are exposed to less radiation, and some more. The table to the right includes typical ranges of annual [[Absorbed, Equivalent, and Effective Dose | doses]].
| style="line-height: 1.2em;"|<span style="font-size:80%;"> '''Table 1'''.</span> Annual average doses and ranges of individual doses of ionizing radiation by source (Millisieverts <sup> a </sup>)
<center> [[Image: UNSCEAR2008Table1.JPG |440px]] </center>
<span style= "font-size:80%;"> <sup>a</sup> Unit of measurement of effective dose. <br />
<span style="font-size:80%;"><sup>b</sup> Globally dispersed radionuclides. The value for the nuclear fuel cycle represents the maximum per caput annual dose to the public in the future, assuming the practice continues for 100 years, and derives mainly from globally dispersed, long-lived radionuclides released during reprocessing of nuclear fuel and nuclear power plant operation. </span>
<span style="font-size:80%;">From [http://www.unscear.org/unscear/en/publications/2008_1.html UNSCEAR 2008 Report Vol. I, Sources and Effects of Ionizing Radiation, Report to the General Assembly] </span>
|}
----
{| class="wikitable" width="98%"
|-
| style="width: 14%;"|<center>[[Image: unscear_logo.gif |100px]]</center>
| style="width: 70%;"|<center>The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) is the leading international body on radiation levels and effects. [http://www.unscear.org Visit the UNSCEAR website] or read the [https://wedocs.unep.org/handle/20.500.11822/7790;jsessionid=3591A7367C12EFFDE9C87817B9E168D5 UNEP report on "Radiation Effects and Sources"] based on UNSCEAR work to learn more.</center>
| style="width: 14%;"|<center>[[Image: unep.jpeg |90px]]</center>
|}
<span style="font-size:115%;"> '''People are also exposed to man-made radiation, predominantly in medicine, but also from other sources. For some, radiation exposure is part of their work.'''</span>
{| class="wikitable" style="background-color: #ffffff; border-color: #ffffff;" width="100%" data-mce-style="background-color: #ffffff; border-color: #ffffff;"
|- style="vertical-align: top;"
| style="width: 50%;"|''Terrestial radiation'' comes from the Earth: everything is naturally radioactive, including rock, soil, water, air, animals, plants, and food. The average [[Absorbed, Equivalent, and Effective Dose | dose]] from terrestial radiation is 2 mSv per year. More than half of this is from radon in your home.
[[Cosmic Radiation in Aviation | ''Cosmic radiation'']] comes from the Sun and outer space. The average [[Absorbed, Equivalent, and Effective Dose | dose]] from cosmic radiation is 0.4 mSv per year.
''Medical procedures'' make up most of the man-made dose, by far. The average [[Absorbed, Equivalent, and Effective Dose | dose]] from medical diagnosis is 0.6 mSv per year.
Some people are also exposed to radiation as part of their work, from industrial uses like nuclear power plants, from accidents, and even from leftovers of atmospheric nuclear testing. On average, the [[Absorbed, Equivalent, and Effective Dose | dose]] from this is very small, about 0.01 mSv per year.
These numbers are worldwide averages. Some people are exposed to less radiation, and some more. The table to the right includes typical ranges of annual [[Absorbed, Equivalent, and Effective Dose | doses]].
| style="line-height: 1.2em;"|<span style="font-size:80%;"> '''Table 1'''.</span> Annual average doses and ranges of individual doses of ionizing radiation by source (Millisieverts <sup> a </sup>)
<center> [[Image: UNSCEAR2008Table1.JPG |440px]] </center>
<span style= "font-size:80%;"> <sup>a</sup> Unit of measurement of effective dose. <br />
<span style="font-size:80%;"><sup>b</sup> Globally dispersed radionuclides. The value for the nuclear fuel cycle represents the maximum per caput annual dose to the public in the future, assuming the practice continues for 100 years, and derives mainly from globally dispersed, long-lived radionuclides released during reprocessing of nuclear fuel and nuclear power plant operation. </span>
<span style="font-size:80%;">From [http://www.unscear.org/unscear/en/publications/2008_1.html UNSCEAR 2008 Report Vol. I, Sources and Effects of Ionizing Radiation, Report to the General Assembly] </span>
|}
----
{| class="wikitable" width="98%"
|-
| style="width: 14%;"|<center>[[Image: unscear_logo.gif |100px]]</center>
| style="width: 70%;"|<center>The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) is the leading international body on radiation levels and effects. [http://www.unscear.org Visit the UNSCEAR website] or read the [https://wedocs.unep.org/handle/20.500.11822/7790;jsessionid=3591A7367C12EFFDE9C87817B9E168D5 UNEP report on "Radiation Effects and Sources"] based on UNSCEAR work to learn more.</center>
| style="width: 14%;"|<center>[[Image: unep.jpeg |90px]]</center>
|}
