[en] Thirty-nine papers were presented and discussed, in sessions on (1) siting and national criteria and practices; (2) siting and environment; (3) siting and reprocessing plants; and (4) new approaches to siting policy, and special problems

[en] There are a number of nuclear installations in Indonesia such as nuclear research reactors, laboratories, irradiators and other nuclear installations but they have been aging, so it is necessary to locate new candidate sites for the construction of nuclear installations. Kulon Progo has a very interesting geological condition to be studied as an alternative candidate for nuclear installation site. The method used is geological mapping and geological structure by observing outcrop as well as geological structure data measurement. The geological structure data are further processed for microtectonic analysis. The area of investigation is divided into 3 units of rock, from old to young formation units of Monomic Breccia, Limestone, and Alluvial Deposits. No active fault was found in the investigation area. Geological structures found are shear fracture and gash fracture limestone units. Geologically, Kulon Progo is suitable as nuclear installation candidate site. (author)

[en] The location of a site safe and able to sequester CO2 for long periods of time is essential to gain public acceptance. This requires a long-term safety assessment developed in a robust and reliable framework. Site selection is the first step and requires specific research. This paper describes the application of the Selection and Classification Method of Geological Formations (SCF) developed to assess the potential of geological formations to CO2 storage. This assessment is based in the analysis of risks to Health, Safety and Environment (HSE) derived from potential CO2 leakage. Comparisons of the results obtained from a number of potential sites can help to select the best candidate for CO2 injection. The potential impact will be related to three key potential features of CO2 geological storage: the potential of the target geological formation for long term CO2 containment; the potential for secondary containment on containment failure of the target formation; and the site's potential to mitigate and/or disperse CO2 leakage if the primary and secondary containments fail. The methodology assesses each of these three characteristics through an analysis and assessment of properties of certain attributes of them. Uncertainty will remain as an input and output value of the methodology due to the usual lack of data in most site selection processes. The global uncertainty reports on the trust on the knowledge of the site characteristics. Therefore, the methodology enables comparing sites taking into account both the HSE risk expectation and the estimation of the quality of knowledge concerning such risk. The objective is to contribute to the selection of potential sites for a CO2 injection pilot plant in the Iberian Peninsula from the perspective of Safety and Risk Analysis.

[en] The storage of CO2 in geological formations is a promising option in the set of technological strategies to reduce the concentration of atmospheric CO2. An essential requirement for the definition and planning of CO2 injection strategies at local, national and supranational scales and to gaining public acceptance that allows the application of this technology to an industrial scale is building safe geological storages capable of sequestering CO2 during extended periods with minimal risk of leakage, i.e., annual leakage rates of CO2 less than 0.01% of the total volume stored, equivalent to a retention period 10 000 years. This report sets out the performance indicators and environmental and safety criteria to be satisfied in the long-term risk analysis and assessment of the Technological Development Plant for CO2 Geological Storage at the Hontomín site (Burgos, Spain).

[en] Agricultural land use pattern is affected by many factors at different scales and effects that are separated by time and space. This will lead to simulation models that optimize or project the cropping pattern changes and incorporate complexities in terms of details and dynamics. Combining System Dynamics (SD) and a modified Conversion of Land Use and its Effects (CLUE) modelling framework, this paper suggests a new dynamic approach for assessing the demand of different crops at country-level and for predicting the spatial distribution of cultivated areas at provincial scale. As example, a case study is presented for Iran, where we have simulated a scenario of future cropping pattern changes during 2015–2040.The results indicated a change in the spatial distribution of cultivated areas during the next years. An increase in the proportion of rice is expected in northern Iran, whereas the proportion of wheat is increasing in the mountainous western areas. Wheat and barley crops are expected to become dominant within the cropping system throughout the country regions.

[en] Meteorology's knowledge has crucial role in regards of nuclear installation safety. Meteorology events such as extreme wind, tropical cyclone , lighting, extreme temperature and humidity also high rainfall causing flood can induce danger that will affect the nuclear installation's safety. The study of siting characteristic for meteorology aspect is use to gain data to be used as basic parameter reactor's in the design and construction purposes in Serpong. The method of this study used data provided by applicant from onsite and offsite measurement. Meteorology data and information review and collected are divided into two section covers meteorological extreme value parameter (pressure, temperature, air humidity, rainfall rate, wind speed, and lighting frequency and density) and extreme weather phenomena (tropical cyclone (storm), waterspouts, tide surge due to storm, and wind wave). Applicants data then were evaluated based on Nuclear Energy Regulatory Agency Chairman Regulation Number 6 Year 2014 On Nuclear Installation Site Evaluation For Meteorological And Hydrological Aspects, international standard from other countries nuclear regulatory agency, regulation/standard from meteorological agency in Indonesia and abroad, also expert recommendation. The study result shows that the maximum for wind speed and precipitation are 48,2 m/s and 296 mm/day, tropical cyclone from storms is categorized as EF-1 scale, also relatively high Number Flash to Ground, respectively. Site are safe from hazards of tropical cyclone, waterspouts, tide surge due to storm, and wind wave, also missile due to tropical cyclone. (author)

[en] Under the U.S. DOE NEAMS program, the high-fidelity neutronics code system has been developed to support the multiphysics modeling and simulation capability named SHARP. The neutronics code system includes the high-fidelity neutronics code PROTEUS, the cross section library and preprocessing tools, the multigroup cross section generation code MC2-3, the in-house meshing generation tool, the perturbation and sensitivity analysis code PERSENT, and post-processing tools. The main objectives of the NEAMS neutronics activities in FY17 are to continue development of an advanced nodal solver in PROTEUS for use in nuclear reactor design and analysis projects, implement a simplified sub-channel based thermal-hydraulic (T/H) capability into PROTEUS to efficiently compute the thermal feedback, improve the performance of PROTEUS-MOCEX using numerical acceleration and code optimization, improve the cross section generation tools including MC2-3, and continue to perform verification and validation tests for PROTEUS.

[en] At present, it is increasingly difficult for the nuclear power design products to meet user expectations for there is no effective method to collect and manage the requirement information, and it is unable to perform early the requirement verification and to change the requirements in the research and development process. In view of the above problems, this paper takes the safety injection system as an example and applies the requirement modeling to the requirement analysis process. The collection of requirements is achieved through requirement use case modeling, requirement scenario modeling and requirement logic modeling. the state diagram is implemented to ensure that the top-level design proposal meets user requirements, and the timing diagrams are compared to check for the missing and inconsistent requirements. Therefore, the early validation of requirements is realized by means of requirements modeling, ensuring that the design products meet the user requirements, and at the same time providing a reference for the further application of requirements modeling in nuclear power design. (authors)

[en] Stellarators are attractive candidates for commercial fusion power plants: they inherently operate in steady-state and, unlike tokamaks, do not require a plasma current to obtain magnetic confinement, which can lead to current-driven disruptions. The concept of stellarators was first proposed over 70 years ago and now gains renewed interest as a candidate for commercial fusion power plants, mainly caused by the successful operation of the large stellarator experiment 'Wendelstein 7-X'. Advances in stellarator optimisation now make it possible to suggest configurations that meet nearly all necessary criteria for a fusion reactor from a physics point of view. In addition, it is possible to find stellarator configurations that are more compact, and thus more economical, and have less turbulent activity than previously suggested configurations. Systems code studies are holistic tools, which are crucial to extrapolate a stellarator to a consistent fusion reactor design point, which matches with physics, engineering and economical constraints. By modelling all relevant properties and boundary conditions, using reduced and computationally fast models, it is possible to quantify these design points and also learn about sensitivities, correlations and relevant trade-offs. However, so far, systems-code studies have mainly been employed for the tokamak concept only, as part of the European tokamak DEMO activity. Because stellarators are not bound to toroidal symmetry, as tokamaks are, they allow for drastically different configurations, especially with respect to the plasma shape and the non-planar coil geometry. To model this vast design space, it is required to develop systems code models, that allow to model a large space of different stellarator configurations within a single code framework. A systems code for such general stellarators did not exist before this work. In this work, a new set of stellarator systems code models is developed and implemented in the European fusion reactor systems code 'Process'. With these modifications, it is possible to model generic modular stellarators, requiring only the plasma shape and the central coil filaments of the non-planar coils as inputs. This work bases on previous contributions, which implemented models for one specific stellarator configuration, namely the Helias 5 stellarator configuration, based on parameters of a respective engineering study. The dependency to such an engineering study was resolved in this work, and a set of models was developed and implemented that are applicable to generic modular stellarators. The new stellarator version of Process is used then to for the first time find a cost-optimised design point of a Helias 5 stellarator, using differently aggressive technology assumptions, find a set of design points for a high field, intermediate-step, prototype stellarator, given uncertainties on certain input parameters, evaluate the relative importance of common targets in stellarator optimization quantitatively in terms of their economical relevance, and lastly demonstrate the usage of Process as a penalty function for different stellarator coil-sets and its possible application for stellarator coil optimisation. The thesis contributes to the area of stellarator systems code studies for fusion power plants and develops models that take the fact into account that there is a growing number of new stellarator configurations available, made possible by recent optimisation advancements.

[en] The exceeding ASI may lead to power decreasing, which may reduce the utilization rate of the plant. In order to effectively control the Xenon oscillation due to the power change, it is necessary to expand the LCO of ASI range at the low power to improve the ease of load-follow operation. And it is necessary to reduce the ASI range at the high power to secure safety analysis margin. In this paper, sensitivity study results for safety analysis margins were described assuming various ASI ranges to determine the optimal LCO of ASI range. As a results of sensitivity study, the ROPM decreased due to reduction of ASI operating range at the full power condition. At the low power condition, the ROPM increased with ASI operating range expansion, but it was within the normal ROPM value. For the peak pressure according to ASI operating range, the peak pressure of RCS increased with extending ASI operating range, but it was assessed to meet the acceptance criteria[2]. The peak pressure of secondary system was found to have no significant effect on the ASI operating range. In conclusion, the extended ASI operating range worsened some safety analysis results, but the results were met the acceptance criteria. The extended ASI operating range is expected that the efficiency of plant operation for the load-follow.