[en] Radiation materials release in nuclear facilities is deposited around soil and plants, as people take in the contaminated plants they is exposed them. In this research we developed ECOREA-II code for assessing the behavior of a radionuclides in soil and plants. Also developed uncertainty analysis of the dynamic model

[en] For dynamic and urgent situation such as emergency situation, it is found that the operator's capability to recover the plant from transient is a critical key for plant safety. From the recorded VTR tape for emergency training of MCR operators, the measures affecting to information deliver are disclosed, verbal protocol analysis is performed for these measures, and thus the communication level is assessed in terms of information deliver

[en] Recently, international co-works on failure behavior of high burn-up nuclear fuels have been briskly progressing in research reactors. In this paper, the test results of RIA-simulating test reactors such as PBF, SPERT, IGR, BIGR, CABRI, NSRR are introduced

[en] OECD/NEA has been developing the Strategic Plan of 2005-2009 which will be used as the guidelines of NEA activities for this period. Korean government is of the view that national interests in the cooperation with OECD/NEA become important and are needed to be reflected to this Strategic Plan. We has prepared and suggested Korean proposal for the Strategic Plan of OECD/NEA

[en] In order to establish data base for property-performance of coated particle fuel, property data of coated particle fuel were collected and evaluated, properties and effects of multi-layers were evaluated as process, fuel behavior in reactor and post-irradiation examination of coated particle fuel were analyzed

[en] A prototype D-D neutron generator[2] is designed and manufactured. The prototype device consists of ion source, ion beam transport system, target system, radiation shield and neutron detection system. Every component has been fabricated now. The whole system is summarized briefly, and the details of target system, neutron detection system are described

[en] More than half of the information relevant to the nuclear control is considered to be geospatially related. Therefore the need for building a geospatial information system (GIS) in the field of the nuclear control is increased. High resolution commercial satellite images with positional information covering wide areas such as nuclear sites are regarded as one of the fundamental information for building a relevant GIS. This paper discusses the geographic file formats, the Shapefile and the geodatabase in regard to the Additional Protocol

[en] Damage to components by water hammer, unsteady flow, oscillation causes failures of a check valve playing an important role in systems of a nuclear power plant. This dissertation is intended to study on water hammer, a major factor of a check valve failure as well as of many other failures. For that, mechanical energy balance for water hammer was established with Kirchoff's law applied and a brief modeling was done with primary system

[en] Recently, the diagnostic and therapeutic applications of radioisotopes have been increased, and the production of therapeutic RI grows largely. The works for improving of the accuracy and completeness of the data are performed for the optimum production of therapeutic RI. In this study, the nuclear data are compared and reviewed for the decay data and production cross sections of P-32

[en] This paper reports the analytical study on the spiral motion of the oblate spheroidal bubble rising in the uniform flow. In the oblate spherical coordinate, the potential flow theory produces the equation of motion derivied by Saffman. The characteristic of the spiral motion is extracted from the equation of motion. As a nondimensional number, the spiral number, S_p = ΩR_w / U_b, was correlated by the equivalent bubble radius. Also, the occurrence of the spiral motion is conditioned by the Spiral number