The Chernobyl experience in the context of contemporary radiation protection problems

Mean individual exposure doses to critical population groups living in the regions under strict control did not exceed the established temporary dose limits for the first and second years after the accident (100 and 30 mSv respectively). The external gamma exposure doses to those living in the contaminated areas did not exceed 50 and 15 mSv, respectively, for 97% of the inhabitants. Internal exposure doses due to incorporated radioactive caesium nuclides did not exceed 50 mSv for the first year and 20 mSv for the second year after the accident for 99% of the population; and for approximately 90% of those living in the regions under control, these doses did not exceed 10 mSv for both the first and second year. It was virtually guaranteed that the doses received by the majority of the population in the regions under control were less than half the temporary dose limits for the first and second years after the accident (for about 95% of the population in the first year and 90% in the second year). Concentrations of radioactive caesium in the bodies of those living in the regions under control were on average 2-5 times lower in the summer of 1987 than in the summer of 1986, and in some cases the difference was measured by factors of 7-10. The implementation of the whole complex of measures brought about a 5 to 20-fold decrease in the thyroid dose commitment for children, a 1.3 to 2.5-fold decrease in the external gamma dose (depending on occupation and age) and a 10-fold or greater decrease in internal exposure doses. (author). 8 refs, 5 figs, 1 tab.

Author

Il'in, L.A.

Descriptors

biological dosemeters; cesium 137; chernobylsk-4 reactor; contamination; dose commitments; dose limits; dosimetry; neoplasms; public health; radiation accidents; radiation doses; radiation protection; radionuclide kinetics; accidents; beta decay radioisotopes; beta-minus decay radioisotopes; body; cesium isotopes; diseases; dosemeters; endocrine glands; enriched uranium reactors; glands; graphite moderated reactors; intermediate mass nuclei; isotopes; kinetics; lwgr type reactors; measuring instruments; medicine; nuclei; odd-even nuclei; organs; power reactors; preventive medicine; radioisotopes; reactors; safety standards; thermal reactors; water cooled reactors

Subject Category

Actual Accidents

Source

Report; International Atomic Energy Agency, Vienna (Austria); Medical aspects of the Chernobyl accident; IAEA-TECDOC--516.; Jul 1988.; 381 p.; p. 47-63.

Place of Publication

International Atomic Energy Agency (IAEA)

Availability

Available from INIS in electronic form.