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NRC updating GEIS rule for new nuclear technology
The Nuclear Regulatory Agency is issuing a proposed generic environmental impact statement (GEIS) for use in reviewing applications for new nuclear reactors.
In an April 17 memo, NRC secretary Carrie Safford wrote that the commission approved NRC staff’s recommendation to publish in the Federal Register a proposed rule amending 10 CFR Part 51, “Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions.”
P.R. Thomas, V.P. Bhatnagar
Fusion Science and Technology | Volume 33 | Number 2 | March 1998 | Pages 407-424
Special Lectures | doi.org/10.13182/FST98-A11947033
Articles are hosted by Taylor and Francis Online.
JET experimental results directly relevant to ITER design are presented. From recent experiments in DT mixtures varying from 100:0 to 10:90, it is inferred that an inverse mass dependence should be included in the H-mode power threshold scaling. Using ITER similarity experiments, the global energy confinement time in JET discharges with type I ELMs is found to be consistent with the gyro-Bohm physics form which has no dependence on plasma β. This form has a weak negative mass dependence but a stronger density dependence than the ITERH93-P scaling. Using the JET MkIIa pumped divertor with N2 seeding, ITER-relevant highly radiative regimes (PR up to 75%) accompanied by type III ELMs have been studied. It is found that the confinement degrades progressively with increasing radiative power fraction. Power loading of divertor tiles with type I ELMs appears to be excessive with NBI whereas it is less of a concern with ICRH. Preliminary assessement of the ITER reference second harmonic (2ɷCT) ICRH scenario with and without the addition of a small amount of He3 is also presented. High performance optimised shear discharges with potentially ‘well aligned’ bootstrap current scenarios consistent with ITER-relevant steady-state operation have also been studied. Internal transport barriers featuring peaked plasma profiles have been demonstrated in DT plasmas in JET. Preliminary results of α-particle driven toroidal Alfven eigenmodes (TAEs) in the ‘after-glow’ of NBI heated 50:50 DT plasmas are also presented.