The Effects of Atomic Radiation on Oceanography and Fisheries (1957) / Chapter Skim
Currently Skimming:
PRECIPITATION OF FISSION PRODUCT ELEMENTS ON THE OCEAN BOTTOM BY PHYSICAL, CHEMICAL, AND BIOLOGICAL PROCESSES
PRECIPITATION OF FISSION PRODUCT ELEMENTS ON THE OCEAN BOTTOM BY PHYSICAL, CHEMICAL, AND BIOLOGICAL PROCESSES
Pages 60-68
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 60... ...
S Atomic Energy Commission Introduction IT HAS been suggested that naturally occurring processes will remove radioactive waste materials from solution or suspension in the oceans, carrying them to the ocean floor where they will be kept out of the human environment until natural radioactive decay destroys them.
|
From page 61... ...
Settling characteristics The sinking of particles in the sea is usually described in terms of Stokes' Law which assumes, in its simplest form, smooth, rigid, spherical particles of a stated diameter and density, sufficiently widely spaced so as not to impede one another. It provided an adequate description of the behavior of these solids with a restricted particle size range.
|
From page 62... ...
In Table 4 are listed fission product elements, together with their half lives and the equilibrium quantities that would be in existence after 100 days cooling when formed in connection with 1011 megawatt hours per year of nuclear power production. Also listed are the specific activities that would result were these activities to be mixed throughout the oceans.
|
From page 63... ...
Operational data Of the fission products listed several are either rare earths or rare-earth-like -- such products all have very similar chemical properties. All form relatively insoluble hydroxides of the type R(OH)
|
From page 64... ...
The activity within the filter feeding TABLE 4 FISSION PRODUCT ACTIVITY AFTER 100 DAYS COOLING FROM 10U MEGAWATT HOURS OF NUCLEAR POWER PRODUCTION 1 Specific activity Half- Tons Curies at curies per life (metric) 100 days ton2 94 y 7.3 3.3 X 10*
|
From page 65... ...
Using the transfer percentages listed for cesium, strontium, and cerium, and estimates of the specific activities that would occur in the oceans as a result of 1011 megawatt hours nuclear power production, the reduction through geochemical processes has been calculated. The figures are given in Table 7.
|
From page 66... ...
It should be noted that short term stability tests suggest that the fired montmorillonite clays would be extremely stable. Deep ocean deposits have appreciable base exchange capacities.
|
From page 67... ...
Coprecipitation of individual fission products with their stable isotopes normally occurring in sea water, and the particle size distribution of the solids formed, and their sedimentation rate.
|
From page 68... ...
S Atomic Energy Commission, New York Operations Office, NYO 4656, ed.
|
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.