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[en] In this meeting we will continue the established tradition to inform each other about the most important achievements of both projects and results of activities identified on last meeting which include areas of Proliferation Resistance, Economics, Safety, and Non-electric applications. We are also expecting discussion of new areas of potential cooperation such as Modelling and Simulation, SMRs, Institutional innovations, Advanced fuel cycles including Thorium, advanced materials, and Education and Training.
[en] To reply the huge world energy/ecological demand in the next century, a simple and rational Th energy system has been proposed, which is acceptable in public not only solving all issues relating with safety, nuclear-proliferation and -terrorism, radio-waste and breeding fuel-cycle, but also not requiring any big R and D cost and time. (author)
[en] The paper describes the programme of nuclear power growth and plutonium production in Sweden up to 1990. Justification is given for commercial plutonium recycling in thermal power reactors starting in 1980. Review of experimental programme is presented. (author)
[en] The world's steady advance toward a plutonium economy is based on unnecessarily high projections of the future growth of nuclear power, in the United States, at least. These high projections of nuclear power growth are based in turn upon an assumed pattern of energy use which is economically wasteful and potentially dangerous both to the global environment and international stability. It is therefore of the utmost urgency that the United States develop an energy policy which encourages increased efficiency in energy use. Among other benefits, the authors believe that such a policy would slow the growth of nuclear power to the point where the plutonium recycle decision could be delayed for at least a decade in the United States. They also believe that such an example of ''technological abstinence'' by the world's leading economic power might well inspire similar decisions in other parts of the world. It could also allow time for the development of a safer evolutionary path for fission power
[en] This paper reports the results of nine structural lattices obtained through the WIMS-TRACA computer program. This work was performed by request of the managers of the WLU/IAEA project, for the extension of the first stage. These benchmark lattices include regular arrays with heavy water and data of the thorium cycle. Besides K∞ and Keff (employing the experimental buckling to account for the leakages) spectrum index and ratio at reaction rates are also determined for comparison with the experimental values. The input data for each lattice, are given in the appendix to help exploring possible differences in the results. (author). 4 refs, 1 fig, 11 tabs
[en] Summary: • Development of the next version of G4ECONS is progressing well; • Comparable results obtained from the benchmarking of G4ECONS, HEEP and H2A for hydrogen production; • Completed benchmarking G4ECONS with NEST in collaboration with IAEA: –Once-through SCWR; – Two fast reactors with closed fuel cycle.
[en] Experimental reactor physics is an essential element of physics design of a nuclear reactor and plays an important role in the safe design and operation of nuclear reactors. Approximations in modelling the reactor using computer codes and the ‘uncertainty in the nuclear data’ that goes as input into these codes contribute to the uncertainty of the theoretically computed design parameters. Reactor physics experiments provide estimates of the uncertainty in the design by comparing the measured and computed values of these parameters. A thorium fuel cycle based advanced heavy water reactor (AHWR) is being designed in Reactor Physics Design Division, BARC. A zero power critical facility (CF) was commissioned to generate the experimental data for physics design validation of AHWR. A number of experiments were carried out in CF which includes the measurement of differential/integral parameters and various reaction rates. The covariance analysis of these measurement will be carried out to generate the relevant covariance matrices
[en] The analysis of a nuclear power (NP) potential of a long term toxicity risk reduction has been conducted, considering current demands to NP for waste reduction. Neutronics intercomparison of both Uranium and Thorium fuel cycles with different neutron spectra in critical reactors and sub-critical systems allows to confirm a sufficient neutronics potential to reduce essentially both the fuel waste toxicity and fission products long term toxicity. An intrinsic potential of toxicity reduction for all important heavy nuclides in different nuclear systems is presented. This analysis has been used to indicate the potential role of ADS in different scenarios of nuclear power development. 8 refs., 2 figs., 3 tabs
[en] About five times more expensive than the fabrication of a fuel element is the enriched uranium contained therein; soon the monthly interest charges for the uranium value of a fuel element reload will account for five percent of the fabrication costs, and much more expensive than all this together can it be if reactor operation has to be interrupted because of damaged elements. Thus, quality assurance comes first. (orig.)
[de]Etwa fuenfmal so teuer wie die Herstellung eines Brennelementes ist das darin enthaltene angereicherte Uran; bald fuenf Prozent der Fertigungskosten macht die monatliche Zinsbelastung fuer den Uranwert einer Brennelementnachladung aus, und viel teurer als alles zusammen kann es werden, wenn durch Schaeden an den Elementen der Reaktorbetrieb unterbrochen werden muss. Qualitaetssicherung steht deshalb an erster Stelle. (orig.)