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Title: Experience in PWR and BWR mixed-oxide fuel management

Abstract

Germany has adopted the strategy of a closed fuel cycle using reprocessing and recycling. The central issue today is plutonium recycling by the use of U-Pu mixed oxide (MOX) in pressurized water reactors (PWRs) and boiling water reactors (BWRs). The design of MOX fuel assemblies and fuel management in MOX-containing cores are strongly influenced by the nuclear properties of the plutonium isotopes. Optimized MOX fuel assembly designs for PWRs currently use up to three types of MOX fuel rods having different plutonium contents with natural uranium or uranium tailings as carrier material but without burnable absorbers. The MOX fuel assembly designs for BWRs use four to six rod types with different plutonium contents and Gd[sub 2]O[sub 3]/UO[sub 2] burnable absorber rods. Both the PWR and the BWR designs attain good burnup equivalence and compatibility with uranium fuel assemblies. High flexibility exists in the loading schemes relative to the position and number of MOX fuel assemblies in the reloads and in the core as a whole. The Siemens experience with MOX fuel assemblies is based on the insertion of 318 MOX fuel assemblies in eight PWRs and 168 in BWRs and pressurized heavy water reactors so far. The primary operating resultsmore » include information on the cycle length, power distribution, reactivity coefficients, and control rod worth of cores containing MOX fuel assemblies.« less

Authors:
; ;  [1]
  1. (Siemens AG, Erlangen (Germany))
Publication Date:
OSTI Identifier:
6802906
Alternate Identifier(s):
OSTI ID: 6802906
Resource Type:
Journal Article
Journal Name:
Nuclear Technology; (United States)
Additional Journal Information:
Journal Volume: 102:1; Journal ID: ISSN 0029-5450
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; FUEL MANAGEMENT; FEDERAL REPUBLIC OF GERMANY; PWR TYPE REACTORS; BURNUP; CONTROL ROD WORTHS; DESIGN; FUEL ASSEMBLIES; FUEL CYCLE; MIXED OXIDE FUELS; PLUTONIUM ISOTOPES; PLUTONIUM RECYCLE; REACTIVITY; ACTINIDE ISOTOPES; DEVELOPED COUNTRIES; ENRICHED URANIUM REACTORS; EUROPE; FUELS; ISOTOPES; POWER REACTORS; REACTORS; SOLID FUELS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS 210100* -- Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled; 210200 -- Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled

Citation Formats

Schlosser, G.J., Krebs, W., and Urban, P. Experience in PWR and BWR mixed-oxide fuel management. United States: N. p., 1993. Web.
Schlosser, G.J., Krebs, W., & Urban, P. Experience in PWR and BWR mixed-oxide fuel management. United States.
Schlosser, G.J., Krebs, W., and Urban, P. Thu . "Experience in PWR and BWR mixed-oxide fuel management". United States.
@article{osti_6802906,
title = {Experience in PWR and BWR mixed-oxide fuel management},
author = {Schlosser, G.J. and Krebs, W. and Urban, P.},
abstractNote = {Germany has adopted the strategy of a closed fuel cycle using reprocessing and recycling. The central issue today is plutonium recycling by the use of U-Pu mixed oxide (MOX) in pressurized water reactors (PWRs) and boiling water reactors (BWRs). The design of MOX fuel assemblies and fuel management in MOX-containing cores are strongly influenced by the nuclear properties of the plutonium isotopes. Optimized MOX fuel assembly designs for PWRs currently use up to three types of MOX fuel rods having different plutonium contents with natural uranium or uranium tailings as carrier material but without burnable absorbers. The MOX fuel assembly designs for BWRs use four to six rod types with different plutonium contents and Gd[sub 2]O[sub 3]/UO[sub 2] burnable absorber rods. Both the PWR and the BWR designs attain good burnup equivalence and compatibility with uranium fuel assemblies. High flexibility exists in the loading schemes relative to the position and number of MOX fuel assemblies in the reloads and in the core as a whole. The Siemens experience with MOX fuel assemblies is based on the insertion of 318 MOX fuel assemblies in eight PWRs and 168 in BWRs and pressurized heavy water reactors so far. The primary operating results include information on the cycle length, power distribution, reactivity coefficients, and control rod worth of cores containing MOX fuel assemblies.},
doi = {},
journal = {Nuclear Technology; (United States)},
issn = {0029-5450},
number = ,
volume = 102:1,
place = {United States},
year = {1993},
month = {4}
}