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Fusion Science and Technology
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.
Anisia Bornea, Marius Zamfirache, Ioan Stefanescu
Fusion Science and Technology | Volume 71 | Number 4 | May 2017 | Pages 532-536
Technical Paper | doi.org/10.1080/15361055.2017.1290973
Articles are hosted by Taylor and Francis Online.
Water – hydrogen catalytic isotopic exchange is the front-end detritiation technology that is used in the pilot plant at ICSI Rm. Valcea. It is also chosen as the main technology for the Tritium Removal Facility will be built at the Cernavoda NPP, Romania. The performance of the isotopic exchange process is mainly determined by the composition of the packing used in the catalytic isotopic exchange columns of the installations. In order to have a good working the packing should consist out of two components: i) a catalyst to enable the isotopic exchange and ii) a hydrophilic packing to maximize the fluid surface that can participate in the isotopic exchange. It is important that these two components of the packing are arranged in such a way that a uniform flow along and across the exchange column is ensured. To achieve a high performance packing theoretical and experimental research that took several years was necessary. The impact of the catalyst /hydrophilic packing ratio, the structure of these materials and their mutual arrangement were investigated. Theoretical analyses based on mathematical models contributed were used to select the optimal exchange column compositions for experimental research. This paper presents a theoretical analysis developed to set up a high performance catalyst-packing mixture, as well as the developed graphical and numerical mathematical models that allowed for this analysis.