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Title: Advanced, lower-cost, proliferation-resistant, uranium-thorium dioxide fuels for LWRs

Abstract

The overall objective is to develop a fuel for the existing light water reactors (LWRs) that (a) is less expensive to fabricate than the current uranium-dioxide (UO{sub 2}) fuel, (b) allows longer refueling cycles and higher sustainable plant capacity factors, (c) is very resistant to nuclear weapons-material proliferation, (d) results in a more stable and insoluble waste form, and (e) generates less high-level waste. The authors present the results of the initial investigation of an LWR fuel consisting of mixed thorium and uranium dioxide (Th/U). Higher sustainable plant capacity factors, resistance to nuclear weapons-material proliferation, and less high-level waste can only be obtained with long refueling cycles and relatively high burnup. Therefore, the authors have done these preliminary comparisons with conventional UO{sub 2} fuel irradiated in a pressurized water reactor (PWR) to 45 MWd/kg and an extended burnup UO{sub 2} core irradiated to 72 MWd/kg. The calculations were performed using the SCALE 4.3 suite of codes. The dimensions and parameters assumed for all the calculations were those of a 17 x 17 PWR fuel assembly. The uranium was enriched to 19.5% {sup 235}U ({approximately}5 to 7% of the total Th/U).

Authors:
;  [1]
  1. Idaho National Engineering and Environmental Lab., Idaho Falls, ID (United States)
Publication Date:
OSTI Identifier:
678101
Report Number(s):
CONF-990605-
Journal ID: TANSAO; ISSN 0003-018X; TRN: 99:009086
Resource Type:
Journal Article
Journal Name:
Transactions of the American Nuclear Society
Additional Journal Information:
Journal Volume: 80; Conference: 1999 annual meeting of the American Nuclear Society (ANS), Boston, MA (United States), 6-10 Jun 1999; Other Information: PBD: 1999
Country of Publication:
United States
Language:
English
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; THORIUM CYCLE; NUCLEAR FUELS; MIXED OXIDE FUELS; PWR TYPE REACTORS; BURNUP; ECONOMICS; HIGH-LEVEL RADIOACTIVE WASTES; PROLIFERATION

Citation Formats

Herring, J.S., and MacDonald, P.E. Advanced, lower-cost, proliferation-resistant, uranium-thorium dioxide fuels for LWRs. United States: N. p., 1999. Web.
Herring, J.S., & MacDonald, P.E. Advanced, lower-cost, proliferation-resistant, uranium-thorium dioxide fuels for LWRs. United States.
Herring, J.S., and MacDonald, P.E. Wed . "Advanced, lower-cost, proliferation-resistant, uranium-thorium dioxide fuels for LWRs". United States.
@article{osti_678101,
title = {Advanced, lower-cost, proliferation-resistant, uranium-thorium dioxide fuels for LWRs},
author = {Herring, J.S. and MacDonald, P.E.},
abstractNote = {The overall objective is to develop a fuel for the existing light water reactors (LWRs) that (a) is less expensive to fabricate than the current uranium-dioxide (UO{sub 2}) fuel, (b) allows longer refueling cycles and higher sustainable plant capacity factors, (c) is very resistant to nuclear weapons-material proliferation, (d) results in a more stable and insoluble waste form, and (e) generates less high-level waste. The authors present the results of the initial investigation of an LWR fuel consisting of mixed thorium and uranium dioxide (Th/U). Higher sustainable plant capacity factors, resistance to nuclear weapons-material proliferation, and less high-level waste can only be obtained with long refueling cycles and relatively high burnup. Therefore, the authors have done these preliminary comparisons with conventional UO{sub 2} fuel irradiated in a pressurized water reactor (PWR) to 45 MWd/kg and an extended burnup UO{sub 2} core irradiated to 72 MWd/kg. The calculations were performed using the SCALE 4.3 suite of codes. The dimensions and parameters assumed for all the calculations were those of a 17 x 17 PWR fuel assembly. The uranium was enriched to 19.5% {sup 235}U ({approximately}5 to 7% of the total Th/U).},
doi = {},
journal = {Transactions of the American Nuclear Society},
number = ,
volume = 80,
place = {United States},
year = {1999},
month = {9}
}