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A Review of Two Hanford Environmental Dose Reconstruction Project (HEDR) Dosimetry Reports Columbia River Pathway and Atmospheric Pathway (1995) / Chapter Skim
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III. WATER PATHWAYS
Pages 19-22

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Select key terms on the right to highlight them within pages of the chapter.


From page 19...
... Most of the radionuclides released were due to neutron activation of trace impurities in the water. The authors should have added a comment to the effect that fall and spring turnover of the lakes created by dams upstream from the Hanford Site caused changes in the mineral content of the cooling water which led to differences over short periods of time in the radionuclides induced by the neutron irradiation.
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From page 20...
... , and the method of calculating the Columbia River's transport of radioactive materials. Dose estimates were calculated for the three representative types in 12 segments of the Columbia River from the Hanford Site to the mouth of the river; they include ingestion of Willapa Bay shellfish and salmon or steelhead caught in the river.
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From page 21...
... The last component, which might well be the largest of the three, applies only to intake assessments for "representative" persons and not to real persons. Hence, if the authors' uncertainty analyses were based on data on real persons, the size of the "ingestion dose conversion factor" relative to other factors might be substantially different from what they have presented.
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From page 22...
... It is unclear why intake of drinking water by a typical representative individual is 40% lower than that by the maximum representative individual and occupational representative individual. Finally, given the relative magnitude of doses associated with this pathway, the committee is concerned that too much effort has been expended on estimating doses acknowledged to be very small.
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Key Terms

  • dose equivalent
  • dose conversion
  • effective dose
  • real persons
  • representative individual

  • radioactive materials
  • radionuclides released
  • drinking water
  • intake assessments
  • hanford site

  • conversion factor
  • occupational representative
  • average time
  • water consumption
  • ingestion dose

  • seasonal variations
  • site caused
  • including cleaning
  • validation results
  • doses acknowledged

  • absorbed dose
  • largest uncertainty
  • specific sources
  • internal deposition
  • bay shellfish

  • neutron activation
  • dams upstream
  • assumed distributions
  • diatomaceous earth
  • cooling water


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