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Title: Denatured thorium cycle: an overview

Abstract

We performed a scenario evaluation that delineates the potential role of denatured uranium/thorium-fueled reactors, including breeders, in symbiotic systems. In this study, reactors fueled with plutonium were built in secure centers, while reactors at dispersed sites were fueled with natural, low-enriched, or denatured uranium (12% /sup 233/U or 20% /sup 235/U in /sup 238/U). The installed nuclear capacity is assumed to be 350 MW(electric) in the year 2000, with a net increase of 15 GW(electric)/y permitted through the year 2050. The U.S. Department of Energy Division of Uranium Resources and Enrichment projected the two bounding cases of uranium recoverable at a marginal cost of $160/lb U/sub 3/O/sub 8/ or less used in this study. The marginal cost of $160/lb U/sub 3/O/sub 8/ occurs at 3 million short tons (ST) for the high-cost supply and at 6 million ST for the intermediate-cost supply. For the assumed high-cost U/sub 3/O/sub 8/ supply (3 million ST U/sub 3/O/sub 8/), thermal recycle with denatured light water reactors (LWRs) will achieve the same incremental increase in maximum achievable nuclear capacity as U/Pu recycle in LWRs (approx. 200 GW(electric) more than once-through cycles). Introduction of a breeder is required for the system to achieve the projectedmore » nuclear demand (1100 GW(clectric) in 2049). For all denatured systems, including those with breeders, a significantly larger fraction of the installed capacity can be located at dispersed sites, compared with U/Pu systems. For the assumed intermediate-cost U/sub 3/O/sub 8/ supply (6 million ST U/sub 3/O/sub 8/), thermal recycle with advanced converters will permit projected nuclear demand to be met for both the Pu/U and denatured uranium--thorium cycles.« less

Authors:
 [1]; ; ;
  1. (Department of Energy, Washington, DC)
Publication Date:
OSTI Identifier:
6222846
Resource Type:
Journal Article
Journal Name:
Nucl. Technol.; (United States)
Additional Journal Information:
Journal Volume: 42:2
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 29 ENERGY PLANNING, POLICY AND ECONOMY; FBR TYPE REACTORS; THORIUM CYCLE; THERMAL REACTORS; COST; COMPARATIVE EVALUATIONS; DENATURED FUEL; ENERGY POLICY; BREEDER REACTORS; ENERGY SOURCES; EPITHERMAL REACTORS; FAST REACTORS; FUEL CYCLE; FUELS; GOVERNMENT POLICIES; NUCLEAR FUELS; REACTOR MATERIALS; REACTORS; 210802* - Nuclear Power Plants- Economics- Fuel Cycle; 290600 - Energy Planning & Policy- Nuclear Energy

Citation Formats

Sege, C.A., Strauch, S., Omberg, R.P., and Spiewak, I. Denatured thorium cycle: an overview. United States: N. p., 1979. Web.
Sege, C.A., Strauch, S., Omberg, R.P., & Spiewak, I. Denatured thorium cycle: an overview. United States.
Sege, C.A., Strauch, S., Omberg, R.P., and Spiewak, I. Thu . "Denatured thorium cycle: an overview". United States.
@article{osti_6222846,
title = {Denatured thorium cycle: an overview},
author = {Sege, C.A. and Strauch, S. and Omberg, R.P. and Spiewak, I.},
abstractNote = {We performed a scenario evaluation that delineates the potential role of denatured uranium/thorium-fueled reactors, including breeders, in symbiotic systems. In this study, reactors fueled with plutonium were built in secure centers, while reactors at dispersed sites were fueled with natural, low-enriched, or denatured uranium (12% /sup 233/U or 20% /sup 235/U in /sup 238/U). The installed nuclear capacity is assumed to be 350 MW(electric) in the year 2000, with a net increase of 15 GW(electric)/y permitted through the year 2050. The U.S. Department of Energy Division of Uranium Resources and Enrichment projected the two bounding cases of uranium recoverable at a marginal cost of $160/lb U/sub 3/O/sub 8/ or less used in this study. The marginal cost of $160/lb U/sub 3/O/sub 8/ occurs at 3 million short tons (ST) for the high-cost supply and at 6 million ST for the intermediate-cost supply. For the assumed high-cost U/sub 3/O/sub 8/ supply (3 million ST U/sub 3/O/sub 8/), thermal recycle with denatured light water reactors (LWRs) will achieve the same incremental increase in maximum achievable nuclear capacity as U/Pu recycle in LWRs (approx. 200 GW(electric) more than once-through cycles). Introduction of a breeder is required for the system to achieve the projected nuclear demand (1100 GW(clectric) in 2049). For all denatured systems, including those with breeders, a significantly larger fraction of the installed capacity can be located at dispersed sites, compared with U/Pu systems. For the assumed intermediate-cost U/sub 3/O/sub 8/ supply (6 million ST U/sub 3/O/sub 8/), thermal recycle with advanced converters will permit projected nuclear demand to be met for both the Pu/U and denatured uranium--thorium cycles.},
doi = {},
journal = {Nucl. Technol.; (United States)},
number = ,
volume = 42:2,
place = {United States},
year = {1979},
month = {2}
}