Transcription of Internal and External Exposure - env
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Internal and External Exposure - env
RoutesRadio pharmaceuticalsRadioactive materialsExposure RoutesInternal and External ExposureExternal exposureFrom outer space and the sunBody surface contaminationSuspended mattersFrom a radiation generatorBuildingsGround Radiation coming from outside the bodyInternal exposureInhalationFood and drink consumptionLungsWound Radiation emitted within the bodyThe body is equally exposed to radiation in both cases."Radiation Exposure " refers to the situation where the body is in the presence of radiation. There are two types of radiation Exposure , " Internal Exposure " and " External Exposure ." External Exposure means to receive radiation that comes from radioactive materials existing on the ground, suspended in the air, or attached to clothes or the surface of the body ( of Vol. 1, " External Exposure and Skin").Conversely, Internal Exposure is caused (i) when a person has a meal and takes in radioactive materials in the food or drink (ingestion); (ii) when a person breathes in radioactive materials in the air (inhalation); (iii) when radioactive materials are absorbed through the skin (percutaneous absorption); (iv) when radioactive materials enter the body from a wound (wound contamination); and (v) when radiopharmaceuticals containing radioactive materials are administered for the purpose of medical t
Chernobyl Nuclear Accident (1986) (5,200 PBq) Kyshtym disaster (1957) Chalk River accident (1952) Windscale fire (1957) Three Mile Island accident (1979), etc. SL‐1 Experimental Nuclear Reactor accident (1961) JCO criticality accident in Tokai‐mura(1999) Severity of Accidents and Incidents Sellafield accident (1979), etc.
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