The challenging requirements of the ITER anti seismic bearings

ITER is being designed and constructed with a high level of safety as an essential requirement. In order to meet the safety and performance objectives of ITER and the French regulatory requirements, the Tokamak Complex has been isolated from the potential seismic hazard by anti-seismic bearings. The dynamic characteristics of the anti-seismic bearings were chosen so that the Tokamak Complex will have a fundamental horizontal frequency of 0.55 Hz. The design, manufacturing and qualification of ASBs have been carried out by NUVIA Travaux Speciaux with specific ITER requirements that are much more stringent than the applicable European and French Norms and directives.