Leveraging Neutronics to Monitor Mass Transfer Corrosion in Lead and Lead-Bismuth Cooled Reactors

Corrosion phenomena in heavy liquid metal cooled reactors primarily result from dissolution and mass transfer of alloying elements such as nickel from the structural materials to the coolant. We propose and preliminarily demonstrate an approach to passively monitor nickel dissolution in lead and lea...

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Bibliographic Details
Published in:JOM (1989) 2021-12, Vol.73 (12), p.4051-4061
Main Authors: Talaat, Khaled, Anderoglu, Osman
Format: Article
Language:English
Subjects:
Alloying elements
Bismuth
Chemistry/Food Science
Cladding
Coolants
Corrosion
Corrosion in Heavy Liquid Metals for Energy Systems
Dissolution
Earth Sciences
Eigenvalues
Energy industry
Engineering
Environment
Flow velocity
Hypotheses
Lead
Liquid metal cooled reactors
Mass transfer
Nickel
Physics
Reactivity
Reactors
Shear stress
Simulation
Stainless steel
Uranium
Viscosity
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Description
Summary:Corrosion phenomena in heavy liquid metal cooled reactors primarily result from dissolution and mass transfer of alloying elements such as nickel from the structural materials to the coolant. We propose and preliminarily demonstrate an approach to passively monitor nickel dissolution in lead and lead-bismuth cooled reactors based on the effect of mass transfer on the neutronics. We support this suggestion with parametric simulations that demonstrate the effect of nickel transfer on reactivity in a modified TRIGA Mark-III reactor with steel cladding and lead coolant. Simulations of a uranium sphere show that nickel contributes a negative effect on the reactivity in the fast spectrum through parasitic absorption which is stronger than its effect on moderation. Transfer of nickel from the cladding to lead in the modified TRIGA reactor model results in removal of some of the nickel from the active core and significantly increases the total reactivity.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-021-04951-0