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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.
H. Schaal, W. Bernnat
Nuclear Science and Engineering | Volume 97 | Number 2 | October 1987 | Pages 161-173
Technical Paper | doi.org/10.13182/NSE87-A27462
Articles are hosted by Taylor and Francis Online.
For calculations of high-temperature gas-cooled reactors with low-enrichment fuel, it is important to know the plutonium cross sections accurately. Therefore, a calculational method was developed, by which the plutonium cross-section data of the ENDF/B-IV library can be examined. This method uses zero- and one-dimensional neutron transport calculations to collapse the basic data into one-group cross sections, which then can be compared with experimental values obtained from integral tests. For comparison the data from the critical experiment CESAR-II of the Centre d’Etudes Nucléaires, Cadarache, France, were utilized. In this experiment samples with different plutonium concentrations and different mixtures of the plutonium isotopes were oscillated inside the core at different temperatures between 20 and 360°C. The simulation of this experiment through the calculational model developed in the present study showed that the ENDF/B-IV data for plutonium are reasonable.