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Considerations on the Disposal of Radioactive Wastes From Nuclear-Powered Ships Into the Marine Environment (1959) / Chapter Skim
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Basis for Evaluating Safe Discharge Rates
Pages 27-28

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From page 27...
... BASIS FOR EVALUATING SAFE DISCHARGE RATES The partial permissible concentrations in the various subdivisions of the marine environment given in Table 2, and utilized by this working panel in the computations which follow, are based on long time exposure of a selected segment of the population. After release of a given volume of liquid wastes or of spent ion exchange resin to the sea water, processes of diffusion will continually reduce the concentration of activity in the water.
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From page 28...
... This relationship serves to establish the criteria for evaluating the suitability of any particular marine area as a receiver of radioactive wastes from nuclear-powered ships. If the distribution of contaminated volumes within the area were truly random at all times, and if the processes of biological concentration of radioisotopes were instantly reversible, then a suitable criterion for safe discharge to the marine environment would be the requirement that the mean concentration defined by the above relationship be less than the ppc value (here designated as s Ppc )
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Key Terms

  • ppc value
  • mean ppc
  • primary coolant
  • isotopes listed
  • gross activity

  • mean concentration
  • weighted mean
  • safe discharge
  • time interval
  • marine environment

  • significant volume
  • truly random
  • maximum concentration
  • nautilus primary
  • discharge rates

  • marine locale
  • various subdivisions
  • section entitled
  • particular marine
  • provide criteria

  • following development
  • criterion employed
  • previous section
  • short compared
  • cant period

  • radioactive materials
  • condition discussed
  • coastal waters
  • average activity
  • source discharge


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