ITER in-wall shielding （IIS） is situated between the doubled shells of the ITER Vacuum Vessel （IVV）. Its main functions are applied in shielding neutron, gamma-ray and toroidal field ripple reduction. The structur...ITER in-wall shielding （IIS） is situated between the doubled shells of the ITER Vacuum Vessel （IVV）. Its main functions are applied in shielding neutron, gamma-ray and toroidal field ripple reduction. The structure of IIS has been modelled according to the IVV design criteria which has been updated by the ITER team （IT）. Static analysis and thermal expansion analysis were performed for the structure. Thermal-hydraulic analysis verified the heat removal capability and resulting temperature, pressure, and velocity changes in the coolant flow. Consequently, our design work is possibly suitable as a reference for IT＇s updated or final design in its next step.展开更多
The ITER neutron shielding blocks are located between the inner shell and the outer shell of the vacuum vessel （VV） with the main function of providing neutron shielding. Conskicring the combined loads of the shield...The ITER neutron shielding blocks are located between the inner shell and the outer shell of the vacuum vessel （VV） with the main function of providing neutron shielding. Conskicring the combined loads of the shielding blocks during the plasma operation of the ITER, limit analysis for one typical ferromagnetic （FM） shielding block has been performed and the structural design has bccn evaluated based on the American Society of Mechanical Engineers （ASME） criterion and European standards. Results show that the collapse load of this shielding block is three times the specified load, which is much higher than the design requirement of 1.25. The structure of this neutron shielding block has a sufficient safety margin.展开更多
基金the National 973 program of China(No.2004CB720704)
文摘ITER in-wall shielding （IIS） is situated between the doubled shells of the ITER Vacuum Vessel （IVV）. Its main functions are applied in shielding neutron, gamma-ray and toroidal field ripple reduction. The structure of IIS has been modelled according to the IVV design criteria which has been updated by the ITER team （IT）. Static analysis and thermal expansion analysis were performed for the structure. Thermal-hydraulic analysis verified the heat removal capability and resulting temperature, pressure, and velocity changes in the coolant flow. Consequently, our design work is possibly suitable as a reference for IT＇s updated or final design in its next step.
基金supported by IWS Detailed Design, Engineering Drawing Preparation and Analysis (No.2 Reference 4200000119 )
文摘The ITER neutron shielding blocks are located between the inner shell and the outer shell of the vacuum vessel （VV） with the main function of providing neutron shielding. Conskicring the combined loads of the shielding blocks during the plasma operation of the ITER, limit analysis for one typical ferromagnetic （FM） shielding block has been performed and the structural design has bccn evaluated based on the American Society of Mechanical Engineers （ASME） criterion and European standards. Results show that the collapse load of this shielding block is three times the specified load, which is much higher than the design requirement of 1.25. The structure of this neutron shielding block has a sufficient safety margin.
