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Fusion Science and Technology
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WIPP improves utility shaft safety, begins infrastructure project
Harrison Western Shaft Sinkers (HWSS), the company drilling a new utility shaft at the Department of Energy’s Waste Isolation Pilot Plant in New Mexico, has retained a safety culture expert following a near-miss accident in the shaft late last year. The safety expert will conduct monthly facilitated discussions with crews working on the shaft to reinforce expectations for identifying concerns regarding unsafe circumstances, according to a recent report by the Defense Nuclear Facilities Safety Board (DNFSB).
Yuji Nakamura, M. Yokoyama, N. Nakajima, K. Y. Watanabe, H. Funaba, Y. Suzuki, K. Ida, S. Sakakibara, H. Yamada, A. Fukuyama, S. Murakami
Fusion Science and Technology | Volume 50 | Number 3 | October 2006 | Pages 457-463
Technical Paper | Stellarators | doi.org/10.13182/FST06-A1269
Articles are hosted by Taylor and Francis Online.
Development of an integrated simulation system for helical plasma is described that draws new experimental plans, including those in new devices, and does experimental data analysis from the viewpoint of integrated physics. The integrated simulation system to be developed has a modular structure that consists of modules for calculating magnetohydrodynamic (MHD) equilibrium/stability, transport, and heating. Each module can be selected in accordance with a user's request and can be combined with other modules. When we want to perform the integrated simulation during the entire plasma duration, a transport module is to be a core module. An integrated tokamak transport code will be extended for the helical configuration and used as a transport module. As the first step of the extension, time evolution of the plasma net current, which is consistent with the three-dimensional MHD equilibrium, is planned to be solved for Large Helical Device plasmas by taking into account the bootstrap current and the beam-driven current.