Thermal analysis on NAC-STC spent fuel transport cask under different transport conditions

Numerical simulation of decay heat scattering out of AP1000 nuclear reactor spent fuel cask based on finite element method

“… After the homogenization of fuel assemblies, it can be considered that the 32 fuel assembly is a spent fuel assembly with the same enrichment and burn up depth, and their radial and axial thermal conductivity can be calculated accordingly.  The components such as bolts, welders, and air holes on the outside of the cask shell have little influence on the heat transfer analysis [16]. Therefore, there is no modelling in the modelling process.…”

“… The fuel sleeve is divided into three layers. It can be simplified by means of homogenization of materials [16]. The inner and outer layers are made of 304 stainless steel, and the middle layer is BORAL plate containing boron neutron absorption material.…”

Cooling Process Analysis of a 5-Drum System for Radioactive Waste Processing

“…The finite element code ANSYS were used for both steady-state and transient thermal analyses aimed at determining the maximum fuel temperature and the temperatures behaviour into the cask. A similar work was carried out by Xu et al [28], who developed a finite element model in ANSYS to study the heat transfer mechanisms, defining an equivalent convection coefficient to represent the boundary conditions. Temperature fields were analyzed under normal and accident transport conditions.…”

Spent fuel transportation cask under accidental fire conditions: Numerical analysis of gas transport phenomena affecting heat transfer in shielding materials

“…Such numerical simulations are usually performed on the basis of a 2D model of a transversal section (Bajwa, 2002) or a 3D model of the whole packaging (Bajwa et al, 2004), (Lo Frano et al, 2011), (Lo Frano et al, 2014), (Pugliese et al, 2010), with radiation boundary conditions to represent the heat flux exchanged between the fire and the cask, heat conduction in the solid parts of the system, in some cases partial melting of the content (Sanyal et al, 2011), or convection (natural or/and forced if a ventilation system is involved, mainly for storage casks (Alyokhina, 2018)) in the air volumes. Equivalence methods can be used to represent the complex multilayer structure of the cask wall and contents (including air gaps) (Xu et al, 2013), (Alyokhina and Kostikov, 2014). The model is then solved using the finite element method (FEM) or the finite volume method (FVM).…”