THE PREPARATION OF SIMPLIFIED MANUALS FOR SHIELDING ANALYSIS.
Abstract
Calculational methods currently used to predict shelter from radiological fallout are examined with respect to both experimental and analytical data such that simplified methods could be developed. Emphasis is placed upon 'In and Down Scattering', the effects of finite fields of contamination and how interior partitions affect the dose rate in above and below-ground areas. The discrepancy found between calculation and experiment for in and down scattering is attributed primarily to the attenuation afforded by the basement ceiling. A preliminary analytical estimate of this attenuation, based upon Compton single scattering, is presented and a modified calculational technique suggested for use in shelter calculations. Little full-scale theoretical and experimental data on the dose contributed by limited strips of contamination exists at the current time. Fair agreement exists between values computed by the engineering method of shelter calculation and experiments on scale models. The simplified calculational technique at times creates values that differ from the more complex techniques. A modified simplified technique is suggested that provides significantly better agreement. The existing methods of computing the effects of interior partitions in above-ground areas shows good agreement with what few experiments that are currently available. There is a strong indication, though that the dose attributed to the radiation scattered in the walls of the structure is underestimated. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1967
- Accession Number
- AD0652873
Entities
People
- Albert W. Starbird
- John F. Batter