Building shielding effects on radiation doses from routine radionuclide releases

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In calculating population doses from the release of radionuclides to the atmosphere, it is usually assumed that man spends all of his time outdoors standing on a smooth infinite plane. Realistically, however, man spends most of the time indoors, so that substantial reductions in radiation doses may result compared with the usual estimates. Calculational models were developed to study the effects of building structures on radiation doses from routine releases of radionuclides to the atmosphere. Both internal dose from inhaled radionuclides and external photon dose from airborne and surface-deposited radionuclides are considered. The effect of building structures is described quantitatively ... continued below

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Pages: 5

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Kocher, D.C. January 1, 1977.

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Description

In calculating population doses from the release of radionuclides to the atmosphere, it is usually assumed that man spends all of his time outdoors standing on a smooth infinite plane. Realistically, however, man spends most of the time indoors, so that substantial reductions in radiation doses may result compared with the usual estimates. Calculational models were developed to study the effects of building structures on radiation doses from routine releases of radionuclides to the atmosphere. Both internal dose from inhaled radionuclides and external photon dose from airborne and surface-deposited radionuclides are considered. The effect of building structures is described quantitatively by a dose reduction factor, which is the ratio of the dose inside a structure to the corresponding dose with no structure present. The internal dose from inhaled radionuclides is proportional to the radionuclide concentration in the air. Assuming that the outdoor airborne concentration is constant with time, the time-dependence of the indoor airborne concentration in terms of the structure air ventilation rate, the deposition velocities for radionuclides on the inside floor, walls, and ceiling, and the radioactive decay constant, were calculated.

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Pages: 5

Notes

Dep. NTIS, PC A02/MF A01.

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  • ANS winter meeting, San Francisco, CA, USA, 27 Nov 1977

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  • Report No.: CONF-771109-72
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5304535
  • Archival Resource Key: ark:/67531/metadc1071328

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1977

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  • Feb. 4, 2018, 10:51 a.m.

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  • April 18, 2018, 3:59 p.m.

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Kocher, D.C. Building shielding effects on radiation doses from routine radionuclide releases, article, January 1, 1977; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1071328/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.