EXPERIMENTAL AND CALCULATED ESTIMATES OF THE SHIELDING EFFECTIVENESS OF COMPARTMENTED STRUCTURES EXPOSED TO FALLOUT
Abstract
Exposure reduction factors were measured inside six compartmented steel structures having different wall thicknesses ranging from 1/4 to 1-1/2 in. These were exposed to radiation from fallout of varying age from three to nine days. Calculations based upon the Nelms-Cooper gamma-ray spectrum at H + 1.12 hours were made for selected compartments in each of the structures following procedures given in the Office of Civil Defense Professional Manual, PM-100-1. Comparison of experiment and calculation reveals a sensitivity to spectral changes and shows that protection is greater during the periods D + 3 to D + 9 days than at H + 1.12 hours. Overall agreement is generally satisfactory. The calculational methods for radiation through floors, however, appear to be inadequate. Spectra measured on site at D + 3 and D + 9 days are given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 19, 1966
- Accession Number
- AD0645552
Entities
People
- Bruce W. Shumway
Organizations
- Naval Radiological Defense Laboratory