Use of UO2-Gd2O3 fuel in pressurized water reactors

Lena Hansson

Research output: Book/ReportReport


The use of gadolinia (Gd2O3) as integral burnable absorber (UO2-Gd2O3) in PWRs (pressurized water reactors) is related to new, more economical fuel management schemes that have been designed and studied by many utilities during the past few years. Extended burn-up (higher initial enrichment) and low leakage fuel management (fresh fuel located towards the interior of the core) require burnable absorber rods to control the reactivity and power density of fresh fuel. The data on thermal and physical properties of UO2-Gd2O3 fuel have been updated. A short survey of the perfotmance of gadolinia in various extended burnup low leakage fuel cycles has also been given.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages46
ISBN (Print)951-38-2729-1
Publication statusPublished - 1986
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tiedotteita


  • nuclear fuel elements
  • pressurized water reactors
  • gadolinium compounds


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