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Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
T. J. Dolan*
Fusion Science and Technology | Volume 16 | Number 2 | September 1989 | Pages 149-156
Technical Paper | Plasma Engineering | doi.org/10.13182/FST89-A29144
Articles are hosted by Taylor and Francis Online.
The one-dimensional equilibrium code BPROF is used to calculate the plasma inductance as a function of beta and pinch parameter θ, and the results are represented by an algorithm. The attainable poloidal flux is calculated for a variety of cases, using the CCOIL code, to derive simple algorithms representing the ohmic heating (OH) and equilibrium field (EF) fluxes in terms of dimensionless parameters. Assuming a temperature scaling relationship with plasma current and size, the loop voltage equation is integrated to find the flux consumed versus the pulse length. This plasma equation is combined with the flux and inductance algorithms to estimate the attainable plasma pulse length, in terms of the peak magnetic field at the coil and the plasma and coil dimensions. The attainable pulse length depends mainly on the major radius. With R = 4 m, a/R = 0.12, and I = 10 MA, a pulse length of ∼15 s is predicted. The voltage drop due to helicity edge loss is a major uncertainty. The main value of this work is the derivation of simple equations for calculating plasma inductance, OH and EF coil fluxes, and plasma pulse length, without having to run BPROF, CCOIL, and plasma transport codes.
