Predictive models based on sensitivity theory and their application to practical shielding problems

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6244344

Bhuiyan, S I; Roussin, R W; Lucius, J L; Bartine, D E

Two new calculational models based on the use of cross-section sensitivity coefficients have been devised for calculating radiation transport in relatively simple shields. The two models, one an exponential model and the other a power model, have been applied, together with the traditional linear model, to 1- and 2-m-thick concrete-slab problems in which the water content, reinforcing-steel content, or composition of the concrete was varied. Comparing the results obtained with the three models with those obtained from exact one-dimensional discrete-ordinates transport calculations indicates that the exponential model, named the BEST model (for basic exponential shielding trend), is a particularly promising predictive tool for shielding problems dominated by exponential attenuation. When applied to a deep-penetration sodium problem, the BEST model also yields better results than do calculations based on second-order sensitivity theory.

• Research Organization: Oak Ridge National Lab., TN (USA); Atomic Energy Centre, Dacca (Bangladesh)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6244344
• Report Number(s): CONF-830538-9; ON: DE83012607
• Resource Relation: Conference: 6. international conference on radiation shielding, Tokyo, Japan, 16 May 1983
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
POWER REACTORS
SHIELDING
CROSS SECTIONS
MATHEMATICAL MODELS
CONCRETES
BUILDING MATERIALS
MATERIALS
REACTORS
220100* - Nuclear Reactor Technology- Theory & Calculation
654002 - Radiation & Shielding Physics- Shielding Calculations & Experiments- (-1987)