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NRC’s Inspector General issues report
Overall findings of a survey of Nuclear Regulatory Commission personnel indicate that while the NRC maintains a few strengths compared to external benchmarks, results have declined since 2015 in a number of areas, according to a recent report from the NRC’s Office of the Inspector General (OIG).
The survey was conducted in February 2020 by Willis Towers Watson, a global risk-management, insurance brokerage, and advisory firm that has partnered with the OIG for more than 20 years to assess the NRC’s safety culture and climate, as well as other aspects of employee experience.
Federico R. Casci, Ettore Minardi
Fusion Science and Technology | Volume 4 | Number 1 | July 1983 | Pages 170-175
Technical Paper | Magnet System | dx.doi.org/10.13182/FST83-A22783
Articles are hosted by Taylor and Francis Online.
The basic parameters characterizing the burn control with the vertical field in an ignited tokamak are discussed in a zero-dimensional model assuming a single circuit for the vertical field and neglecting passive effects. The behavior of the system is determined by three dimensionless quantities: ξ which includes the effect of the mutual inductance; Ũ , related to the gain of the linear feedback; and A, related to the pressure, to the plasma current, and to the vertical field index. Analysis of the circuit equations and of the transport equation leads to the determination of stability regions in the parameter space. It is shown that the effect of the mutual inductance described by ξ is always relevant in the choice of the parameters for a stable burn. As a practical illustration the results are applied to the INTOR case.