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Fusion Science and Technology
Latest News
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.”
M. M. Menon, C. B. Baxi, G. L. Campbell, J. T. Hogan, G. L. Laughon, M. A. Mahdavi, R. Maingi, P. K. Mioduszewski, L. W. Owen, E. E. Reis, M. J. Schaffer, K. M. Schaubel, J. P. Smith, R. D. Stambaugh, M. R. Wade
Fusion Science and Technology | Volume 27 | Number 4 | July 1995 | Pages 355-363
Technical Paper | Experimental Device | doi.org/10.13182/FST95-A30356
Articles are hosted by Taylor and Francis Online.
A particle exhaust scheme, employing a cryocon-densation pump in the outboard divertor region under a baffle, has been installed and operated in the DIII-D tokamak. The cryopump provides toroidally symmetric pumping at a rate of 30 000 to 40 000 ℓ/s for D2 in the pressure range of 1 to 4 mTorr. Pressures in the 2 to 3 mTorr range are routinely observed under the baffle. This translates to particle exhaust throughputs of ∼100 Torr ℓ/s. The exhaust throughput could be controlled by selecting the position of the plasma strike region with respect to the opening to the baffle chamber. The pump has been used quite effectively for plasma density control.