Nuclear Plant Chemistry
Achieving higher burnup and power uprates in PWR causes the build-up of Chalk River Unidentified Deposit (CRUD) on the upper spans of nuclear fuel rods. CRUD deposits produce operational issues such as CRUD-induced power shift (CIPS) and CRUD-induced localized corrosion (CILC). Understanding of the formation of porous CRUD deposits is a significant challenge to science-based multi-scale modeling and its valuation through elaborate experiments. The accurate prediction of CRUD formation requires a meso-scale CRUD chemistry model that can be fully coupled with neutronics, heat transfer, fluid flow, and surface processes such as dissolution and precipitation.
On-going projects : High Development of Water Chemistry Analysis Code
Project Description : A multi-physics meso-scale model is required to understand the phenomena of boron hideout within CRUD. Closely coupled multi-physics include heat transport of two phase boiling, fluid dynamics and
mass transport within porous medium, radial species generation by radiolysis, and chemical reactions including precipitation.
High-fidelity Meso-scale Modeling and Simulation
On-going projects : -
Project Description : Under planning
Experimental Simulation of CRUD Growth and its Prevention
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