Accession Number : AD0423239

Title :   SHIELDING EFFECTIVENESS OF COMPARTMENTED STRUCTURES IN A FALLOUT FIELD,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA

Personal Author(s) : Shumway, B. W. ; Tomoeda, S. ; Frank, A. L.

Report Date : 29 APR 1963

Pagination or Media Count : 87

Abstract : Measurements were made of the penetration of fallout gamma radiation into six compartmented steel structures, and determinations were made of the free-field radiation characteristics of the fallout field. Ionization chambers and film packets were placed inside steel compartments, which were then stacked to form six cubic structures measuring three compartments along each dimension. Each structure contained 27 compartments. The wall thickness of each structure was uniform. Thicknesses ranged from 1/4 to 1 1/2 in. Dose measurments were made both inside and on the outside surfaces of the structures during various periods from H+74 to H+262 hours. Additional measurements were made with photographic film within steel slabs of thicknesses to match those of the compartmented structures. Comparison of measurements within the slabs with those within the com/partmented structures gave a direct indication of extra dose attenuation produced by compartmentalization. (Author)

Descriptors :   (*STRUCTURES, SHIELDING), (*FALLOUT, RADIATION EFFECTS), GAMMA RAYS, IONIZATION CHAMBERS, PHOTOGRAPHIC FILM, THICKNESS, DOSE RATE, DOSAGE, MEASUREMENT, SURFACES, STEEL, ATTENUATION, SCINTILLATION COUNTERS, SPECTROPHOTOMETERS, AZIMUTH.

Distribution Statement : APPROVED FOR PUBLIC RELEASE