Development and application of the automated Monte Carlo biasing procedure in SAS4

Conference · Tue Jun 01 00:00:00 EDT 1993

OSTI ID:10162832

Tang, J S; Broadhead, B L

An automated approach for biasing Monte Carlo shielding calculations is described. In particular, adjoint fluxes from a one-dimensional discrete-ordinates calculation are used to generate biasing parameters for a three-dimensional Monte Carlo calculation. The automated procedure consisting of cross-section processing, adjoint flux determination, biasing parameter generation, and the initiation of a MORSE-SGC/S Monte Carlo calculation has been implemented in the SAS4 module of the SCALE computer code system. The automated procedure has been used extensively in the investigation of both computational and experimental benchmarks for the NEACRP working group on shielding assessment of transportation packages. The results of these studies indicate that with the automated biasing procedure, Monte Carlo shielding calculations of spent fuel casks can be easily performed with minimum effort and that accurate results can be obtained at reasonable computing cost. The systematic biasing approach described in this paper can also be applied to other similar shielding problems.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10162832
• Report Number(s): CONF-9304131--7; ON: DE93015205
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420204
560101
61 RADIATION PROTECTION AND DOSIMETRY
663600
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS
990200
AUTOMATION
CROSS SECTIONS
DESIGN
DOSIMETRY AND MONITORING
ITERATIVE METHODS
MATHEMATICS AND COMPUTERS
MONTE CARLO METHOD
RADIATION DOSES
RADIATION PHYSICS
RADIATION TRANSPORT
S CODES
SHIELDING
SHIPPING CONTAINERS
SPENT FUEL CASKS
THREE-DIMENSIONAL CALCULATIONS