United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR

United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), Sources and Effects of Ionizing Radiation, UNIPUB, New York (1977). 

Figure 32.6 Chernobyl air plume behavior and reported initial arrival times of detectable radioactivity. Plume A originated from Chernobyl on April 26, 1986 Plume B on April 27-28 and Plume C on April 29-30. The numbers indicate initial arrival times 1, April 26 2, April 27 3, April 28 4, April 29 5, April 30 6, May 1 7, May 2 and 8, May 3. (From United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). 1988. Sources, Effects and Risks of Ionizing Radiation. United Nations, New York. 647 pp.)... 

Data from United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). 1988. Sources, Effects and Risks of Ionizing Radiation. United Nations, New York. 647 pp. Aarkrog, A. 1990. Environmental radiation and radiation releases. Inter. Jour. Radiation Biol. 57 619-631. 

The effective dose equivalent (M ) is the formulation for the weighted dose equivalents in irradiated tissues or organs stipulated in 1977 by the International Commission on Radiological Protection [ICRP (1977a)]. He is based on an ICRP analysis of the risk information in the 1977 report of the United Nations Scientific Committee on the Effects of Atomic Radiation [UNSCEAR (1977)]. The formulation is given in Table 1.1, where Wi is the weighting factor for the relative radiosensitivity of the tissue and H-y is the dose equivalent in the irradiated tissue or organ. 

The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) has stated that limits for natural (and depleted) uranium in drinking water (the most important source of human exposure) should be based on the chemical toxicity rather than on a hypothetical radiological toxicity in skeletal tissues, which has not been observed in either man or animals (Wrenn et al. 1985). 

Formation of United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). 

The concentration of the radionuclides of interest may be inferred from the sampling location. Natural and man-made background radiation values are summarized by the National Council on Radiation Protection and Measurements (NCRP 1987a) and the United Nations Scientific Committee on the effects of atomic radiation (UNSCEAR 2000a,b). 

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