Accession Number : AD0479581


Title :   ANALYSIS AND APPLICATION OF SHIELDING AND PROTECTION FACTOR RESEARCH


Descriptive Note : Final rept. 30 Sep 1963-14 Feb 1965


Corporate Author : RESEARCH TRIANGLE INST (RTI) INST RESEARCH TRIANGLE PARK NC


Personal Author(s) : Hill, Edward L ; Whitaker, Donald R ; Doggett, Wesley O


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/479581.pdf


Report Date : 30 Nov 1965


Pagination or Media Count : 72


Abstract : A review of gamma-ray shielding information was made to determine if existing methods for computing protection factors of structures agree with experimental data and to determine areas where shielding information is incomplete. Research subject areas analyzed include: modeling techniques, basement dose rates, simulated fallout, interior partitions, ceiling shine, ground roughness, azimuthal sectors, limited strips of contamination, and non- uniform source distributions. These analyses are used to determine the status of the present protection factor computational procedures. Major findings in each subject area are included and recommendations for additional experiments and for modifications to existing computational procedures are made. Some major findings are: (1) roof contributions as predicted by Spencer's Monograph agree within 1 to 15% with full-scale experimental measurements; (2) theoretical predictions of Spencer's Monograph for basement protection factors are usually non- conservative; (3) modeling is, in general, a useful, convenient, and accurate method of obtaining fallout protection offered by first stories and upper stores of full-scale structures; (4) floor-edge scattering into a basement can be a substantial source of radiation.


Descriptors :   *SHIELDING , *FALLOUT , MATHEMATICAL MODELS , SIMULATION , SCATTERING , EXPERIMENTAL DATA , OPTIMIZATION , FLOORS , SHELTERS , COMPUTER PROGRAMMING , STRUCTURES , TERRAIN , BACKSCATTERING , MONTE CARLO METHOD , MATHEMATICAL PREDICTION , GAMMA RAYS , WALLS , HANDBOOKS , DOSE RATE , RADIOACTIVE CONTAMINATION , DISTRIBUTION FUNCTIONS , ROOFS , UNDERGROUND STRUCTURES


Subject Categories : Nuclear Radiation Shield, Protection & Safety


Distribution Statement : APPROVED FOR PUBLIC RELEASE