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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
S. J. Piet, M. S. Kazimi, L. M. Lidsky
Fusion Science and Technology | Volume 5 | Number 3 | May 1984 | Pages 382-392
Technical Paper | Safety/Environmental Aspects | doi.org/10.13182/FST84-A23113
Articles are hosted by Taylor and Francis Online.
Seven potential safety concerns for deuteriumtritium fusion reactors were examined and the influence of blanket material choice determined. This influence was quantified in terms of relative consequence indices (RCIs) according to prescribed consequence criteria. Selected combinations of structural material (Type 316 stainless steel, HT-9, vanadium alloy, or TZM), primary coolant (pressurized water, helium, lithium, or flibe), and tritium breeder (LiAlO2, lithium, or Li17Pb83) were examined. The analyses and indices were structured to focus on the specific material properties that influence the results, which allows for comparison of materials not included in the present study. The safety concerns that were found to be relatively insensitive (differing by less than an order of magnitude) to material choice are the rate of temperature increase from continued plasma heating following loss of coolant and electromagnetic effects of plasma disruptions. The range of the RCIs was about an order of magnitude for problems concerning after-heat removal, corrosion, and the thermal effects of disruptions. The following problems were found to range in severity over several orders of magnitude according to material choice: potential public health effects from radioactivity release, rapid structural oxidation, blanket chemical combustion, and coolant pressurization.
