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Fusion Science and Technology
Latest News
Steam is a sign of cooling system function . . . at ITER
Steam from one of ITER’s ten induced-draft cooling cells offers visual confirmation of a successful cooling system test, the ITER organization announced April 30. ITER’s cooling system features 60 kilometers of piping with pumps, filters, and heat exchangers that can pull water through at up to 14 cubic meters per second. Once fully operational, two cooling loops—one to remove the heat generated by the plasma in the ITER tokamak and one for its supporting infrastructure—will be capable of extracting up to 1,200 MW of heat.
Satoshi Fukada, K. Katayama, T. Takeishi, Y. Edao, Y. Kawamura, T. Hayashi, T. Yamanishi
Fusion Science and Technology | Volume 67 | Number 2 | March 2015 | Pages 339-342
Proceedings of TRITIUM 2013 | doi.org/10.13182/FST14-T25
Articles are hosted by Taylor and Francis Online.
What affects tritium migration through porous concrete walls coated with a hydrophobic paint is reviewed from the viewpoint of tritium safety. Being taken into consideration of multi-structural concrete composed of aggregates, sand, water and cement which contents are CaO, SiO2, Al2O3, Fe2O3, MgO, CaSO4 and so on, tritium path is discussed in terms of the HTO diffusivity and adsorption coeffcient on porous walls. Measures to predict rates of tritium leak from laboratory walls to the environment and residual tritium amounts in concrete are estimated based on previous data. Three cases of accidental or chronic tritium release to laboratory air are discussed using the diffusion-adsorption model.