Effects of Pb and Bi cross sections on ATW subcriticality predictions.
Conference
·
OSTI ID:11858
The accelerator-driven transmutation of waste (ATW) system has been proposed for transmuting the long-lived radioactive nuclei of high-level waste to stable or short-lived species. In recent ATW design concepts, lead-bismuth eutectic (LBE), consisting of 44.5% Pb and 55.5% Bi by weight is used as the spallation target, system coolant, and reflector. Because of the excellent neutron reflection properties of LBE, the subcriticality level of ATW is quite sensitive to the cross sections of lead and bismuth. The purpose of this paper is to investigate the effects of these cross sections on subcriticality and other core characteristics of ATW and to compare the results obtained using cross sections in different evaluated nuclear data files. The effects of lead and bismuth cross sections on the core characteristics of ATW were studied using 33 group cross section sets derived from the ENDF/B-VI, ENDF/B-V, JENDL-3.2, and BROND-2.2 nuclear data. A 2000 MW(thermal) ATW configuration similar to that described in Reference 1 was used in this study. In this configuration, the spallation target region is 55 cm high and 25 cm in radius, and is surrounded by a 15-cm thick LBE buffer. The adjacent fueled region is {approximately}65 cm thick and 200 cm high. The volume fractions of fuel, coolant, and structure are 25.7%, 59.3%, and 15%, respectively. The metal alloy fuel is composed of roughly 70% zirconium, 25% transuranics (TRU), and 5% Tc-99 by weight. A thick LBE reflector surrounds the whole core; its axial thickness is 250 cm, and its radial thickness is 295.2 cm.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 11858
- Report Number(s):
- ANL/RA/CP-99340
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of lead and bismuth cross sections on ATW subcriticality predictions
Kinetics of pyroprocesses in ATW fuel cycles
Thermal-hydraulic analysis of the LANL/IPPE/EDO-GP 1-MW LBE target
Journal Article
·
Thu Jul 01 00:00:00 EDT 1999
· Transactions of the American Nuclear Society
·
OSTI ID:20005828
Kinetics of pyroprocesses in ATW fuel cycles
Journal Article
·
Sun Nov 30 23:00:00 EST 1997
· Transactions of the American Nuclear Society
·
OSTI ID:552405
Thermal-hydraulic analysis of the LANL/IPPE/EDO-GP 1-MW LBE target
Journal Article
·
Sat Jul 01 00:00:00 EDT 2000
· Transactions of the American Nuclear Society
·
OSTI ID:20086959