Baja bebas radiasi: Perbedaan antara revisi

==Pencemaran radionuklida==

[[File:Body counting room at Rocky Flats Plant.jpg|thumb|Ruang [[pencacahan sekujur tubuh]] di [[Rocky Flats Plant]], [[Denver, Colorado]], sepenuhnya terbuat dari baja pra-Perang Dunia II]]

 

Kadar radiasi latar [[bahaya antropogenik|antropogenik]] dunia mencapai puncaknya (0,15&nbsp;[[Sievert|mSv]]/tahun di atas kadar normal) pada tahun 1963, ketika [[Perjanjian Pelarangan Sebagian Uji Coba Nuklir]] mulai berlaku. Sejak saat itu, radiasi latar antropogenik menurun jauh menjadi 0,005 mSv/tahun di atas kadar normal.<ref name=UNSCEAR>{{citation | url = http://www.unscear.org/unscear/en/publications/2008_1.html | author = [[United Nations Scientific Committee on the Effects of Atomic Radiation]] (UNSCEAR) | title = Sources and Effects of Ionizing Radiation (UNSCEAR 2008 Report): Volume I | publisher = United Nations | location = New York | year = 2010 | isbn = 978-92-1-142274-0 | page = 6 | quote = The estimated per caput effective dose of ionizing radiation due to global fallout from atmospheric nuclear weapons testing was highest in 1963, at 0.11 mSv/yr, and subsequently fell to its present level of about 0.005 mSv/yr (see figure II). This source of exposure will decline only very slowly in the future as most of it is now due to the long-lived radio-nuclide carbon-14.}}</ref>