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Title: Benchmark calculations for FFTF Inner radial shield damage rates

Conference ·
OSTI ID:10153731

A comparison of the damage rates calculated by Monte Carlo Neutron Photon (MCNP), with values based on a FERRET-adjusted diffusion theory flux, was made for 22 dosimeter locations in the Fast Flux Test Facility (FFTF). The C/E values in the fueled region for characterizer assemblies in core locations 2101, 2402, 3404, 2503, 2603 and in the axial reflector of assembly 2101 are within 10% of unity, indicating agreement within the combined calculated and adjusted uncertainties. The comparison also shows good agreement within 20% of unity in most of the axial zones of radial reflectors in rows 7, 8, and 9, their deviation either within, or slightly outside, the combined one-sigma uncertainty. There are three relatively large C/E deviations, ranging from 30% to 45% of unity, in the lower reflector block of row 9 and the upper shield regions of rows 7 and 8. The possible reasons for the large C/E are explained.

Research Organization:
Westinghouse Hanford Co., Richland, WA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC06-87RL10930
OSTI ID:
10153731
Report Number(s):
WHC-SA-1429; CONF-920431-28; ON: DE92015875
Resource Relation:
Conference: Meeting on new horizons in radiation protection and shielding,Pasco, WA (United States),26 Apr - 1 May 1992; Other Information: PBD: Dec 1991
Country of Publication:
United States
Language:
English