Effects on Populations of Exposure to Low Levels of Ionizing Radiation (1972) / Chapter Skim
Currently Skimming:
Pages 11-20
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 11... ...
Chapter III SOURCES OF IONIZING RADIATION AND POPULATION EXPOSURES I Introduction 12 II.
|
From page 12... ...
Chapter III SOURCES OF IONIZING RADIATION AND POPULATION EXPOSURES I Introduction The scale and nature of past and foreseeable exposures are reviewed in order to provide a focus for risk estimates and because radiation protection guidance should ultimately take into account all sources of exposure.
|
From page 13... ...
III. Medical Exposures The use of radiation in the healing arts is recognized today as the largest man-made component of radiation dose to the United States population.
|
From page 14... ...
doses for 1964 and 1970 are estimated to have been 61 and 72 mrem, respectively. Errors in the survey and the measurements from which these estimates were derived have not, as yet, been fully evaluated.
|
From page 15... ...
mrem to the GSD annually. Based on information presently available, it appears that the mean per capita radiation dose from diagnostic medical radiology could remain stable in future years, if technical improvements keep pace with increased usage rates.
|
From page 16... ...
K-and when Liquid Metal Fast Breeder Reactors (LMFBR) become commonplace, other radionuclides will become sources of environmental contamination including 239Pu, 238Pu, 241Pu, 24Na, and 22Na.
|
From page 17... ...
U.S. population from fuel reprocessing was 0.0008 mrem in 1970 and will be 0.2 mrem in the year 2000; the tissues of major exposure are the respiratory lymph nodes, the thyroid gland, and skin.
|
From page 18... ...
the past several years the relatively small tests conducted by the French and Chinese have maintained an annual fallout deposition that has been relatively constant. The total annual whole-body doses from global fallout in mrem/person ranged from 13 in 1963 to 4.0 in 1969.
|
From page 19... ...
Table 2 Summary of Estimates of Annual Whole-Body Dose Rates in the United States (1970) Source Average Dose Ratei (mrem/yr)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.