THE USE OF SCALE MODELS IN STRUCTURE SHIELDING EXPERIMENTS.
Final rept. 3 Jan-17 Dec 66,
TECHNICAL OPERATIONS INC BURLINGTON MASS
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Various aspects of using scale-model shielding data to predict the shielding effectiveness of full-scale structures were studied. Among the important problems considered were the estimate of the far-field contribution and the application of model data to the corresponding full-scale structure. The work has shown that for these two operations, separate treatment of the skyshine and non-skyshine components of the dose rates in the model structure produces good agreement with experimental and theoretical results for full-scale structures. This agreement is significantly better than that obtained by using the total dose rates to perform these operations, as was done in the earlier methods of handling model data. In considering the materials used in model structures, it was found that the use of steel in model experiments on a psf basis to simulate concrete in the full-scale structure produces no difference in barrier reduction, within experimental accuracy, up to a barrier thickness of 150 psf. The results of the evaluation of the methods for designing and carrying out scale-model shielding studies and applying the results of these studies to full-scale structures indicate that scale-model experiments can be used to predict the shielding effectiveness of a corresponding full-scale structure to within plus or minus 10. Author
- Structural Engineering and Building Technology
- Nuclear Radiation Shielding, Protection and Safety