Oxygen sensors for accelerator driven system (ADS) reactors

Research output: Indexed journal article Conference articlepeer-review


Oxygen activity and its control is an important parameter in the use of molten LBE or lead as a coolant in ADS reactors. Oxygen concentration in the molten alloy should be high enough to form and maintain a stable passivation layer on the surface of the structural material. This layer can minimize the corrosion problems on the structural material. If the oxygen activity drops below a certain level, the passivation layer may decompose and the base metal of the structural material might be exposed to the molten alloy. Nickel, chromium and iron, constitutive elements of stainless steels, show a high solubility in LBE. If the structural material is submerged in molten LBE without a passive oxide layer, it will be dissolved by the action of the molten alloy. Potentiometric sensors for measuring oxygen activity in molten 44.5% lead – 55.5% bismuth alloy have been developed at "Institut Quimic de Sarria" Electrochemistry Lab.
Translated title of the contributionOxygen Sensors for Accelerator Driven System (ADS) Reactors
Original languageEnglish
Pages (from-to)425-433
Number of pages8
JournalECS Transactions
Issue number31
Publication statusPublished - 1 Jan 2013
EventECS 3D Symposium on Corrosion, Passivity, and Energy: In Honor of Digby D. Macdonald - Honolulu, HI, United States
Duration: 7 Oct 201210 Oct 2012


  • Accelerator driven systems (ADS)
  • Corrosion problems
  • High solubility
  • Molten alloy
  • Oxygen activity
  • Oxygen concentrations
  • Passivation layer
  • Passive oxides
  • Lead alloys
  • Passivation
  • Bismuth alloys


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