The Relative Effectiveness of Structures as Protection from Gamma Radiation from Cloud and Fallout Sources as a Function of Source Energy

Abstract

Point kernel models were developed for both fallout and cloud sources. That development included a method of accurately combining buildup factors in multi-region problems over wide ranges of energy and photon mean free path, and a method for calculating the effect of ground roughness on the attenuation factor for fallout sources. The results were reported for six spectra as well as discrete energies from 15 KeV to 15 MeV. The structures used as examples include small wood frame and large brick houses. The results show that the protection provided by houses for the PWR-2 event is approximately equal to that for the 1-hr weapon fallout. However there are significant differences for other spectra, such as that from Three Mile Island. The effects of varying building size are reported as well as the relative importance of both cloud and fallout sources that infiltrate structures. A listing of computer program CLOUD is provided.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1984
Accession Number
ADA151564

Entities

People

  • James Paul Fingerloss

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accidents
  • Air Force
  • Civil Defense
  • Computers
  • Detectors
  • Engineering
  • Environmental Protection
  • Gamma Rays
  • Geometry
  • Measurement
  • New York
  • Nuclear Energy
  • Nuclear Reactors
  • Particulate Matter
  • Radiation Effects
  • Radioactive Materials
  • Reactor Accidents

Readers

  • Atmospheric Science/Meteorology
  • Energy Conservation and Renewable Energy Engineering.
  • Nuclear and Radiation Engineering.