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DOE announces NEPA exclusion for advanced reactors
The Department of Energy has announced that it is establishing a categorical exclusion for the application of National Environmental Policy Act (NEPA) procedures to the authorization, siting, construction, operation, reauthorization, and decommissioning of advanced nuclear reactors.
According to the DOE, this significant change, which goes into effect today, “is based on the experience of DOE and other federal agencies, current technologies, regulatory requirements, and accepted industry practice.”
Kosei Hara, Francis C. Moon
Fusion Science and Technology | Volume 10 | Number 3 | November 1986 | Pages 1548-1553
Magnet Engineering | doi.org/10.13182/FST86-A24953
Articles are hosted by Taylor and Francis Online.
Superconducting magnets have complex structures. The coil pack is made up of alternate layers of superconductor and insulator, which form an extremely unisotropic composite structure. For example, the MFTF magnet design, the transverse stiffness is quite soft as compared to the circumferential stiffness [1]. In this study, cylindrically wound superconducting magnets were modeled by two-dimensional multi-rings connected by soft springs, and the internal vibration and buckling of the system were studied both experimentally and analytically. Since the linear elastic theory used in the previous studies [2,3] has failed to predict buckling and vibration of internal turns in the bending mode, elastic ring theory was used in this study. A model based on ring theory and magnetic stiffness was developed to explain experimental observations and showed a fair to good agreement between experimental and theoretical values of the buckling current.