[en] This research introduces American reactor operation licensing system and tries to find the way that we can apply to ours. I hope that it could help us to develop our reactor operation licensing system for selecting excellent operator

[en] Hydrogen energy is recently being highlighted by developed countries as new energy source which is clean and renewable. The research and development projects on the new technologies of hydrogen production are also commenced in many countries. In this paper, hydrogen production costs by existing options are compared by the absolute production costs and cost index. On the other hand, the prospects for production technologies to be developed in the near future is shortly discussed

[en] In accordance with the 2001 amendment of the Nuclear Liability Act of 1969, the definition of nuclear damage was extended, the amount of liability and compulsory financial security became 300 million SDRs, prescription period for personal injury or loss of life became 30 years. Under the condition that the benefit of becoming a party to a international nuclear liability regime keeps in equilibrium with the cost thereof, we may become a party to the convention

[en] The continuous monitoring is carried out throughout plant life to assure the structural integrity of KALIMER. In this paper, the conceptual design of the continuous monitoring for KALIMER are performed to ensure the structural integrity and operability of KALIMER. The general strategy and methodology of continuous monitoring for the reactor system and components are proposed and described for considering the design characteristics of KALIMER and the intents of the ASME XI Division 3

[en] Limit of the measurement area for sintered UO₂ using X-ray diffraction (XRD) of general optics without any special beam collimator was investigated. Optimum slit widths of the aperture (divergence) and detector was determined considering the peak resolution and intensity of X-ray diffractogram. The intensities were measured depending on the area of sintered UO₂: 4.85x6, 4.85x3, 4.85x1.5, 5.85x0.75 (mm x mm). The limit of the measurement are was 1.62 mm² (SN=3)

[en] The main objective of this study is to establish nuclear regulatory document retrieval system based on internet. With the advancement of internet and information processing technology, information management patterns are going through a new paradigm. Getting along the current of the time, it is general tendency to transfer paper-type documents into electronic-type documents through document scanning and indexing. This system consists of nuclear regulatory documents, nuclear safety documents, digital library, and information system with index and full text

[en] Based on the fuel assembly mechanical/thermal-hydraulic design experience and scrutinizing the design features on the foreign advanced nuclear fuel and the foreign patents of the spacer grid, 13 kinds of spacer grid candidates are derived. Among, the candidates the mechanical/structural performance on the five candidates was evaluated by the screening test and the analysis. As a result of the test and the analysis, two spacer grid shapes are finally selected to be the leading candidates in order to investigate the mechanical/structural performance in detail

[en] Optogalvanic spectra have been recorded by axially irradiating hollow uranium cathode glow discharge with a single-mode diode laser. Fifty uranium transitions have been tabulated with optogalvanic signal magnitudes in the 662-680, 774-792, 834-862 nm region for wavelength calibration. Atomic excitation temperature has been determined by the measured signal magnitudes

[en] The 359MHz Radio-Frequency Quadrupole (RFQ) linac has been fabricated to accelerate a 20mA proton beam from 50 KeV to 3 MeV. A 1.0MW CW RF system will be used to provide power to the RFQ. Two types of a input RF coupler were designed and fabricated to feed the RF power generated by klystron into the RFQ accelerating cavity

[en] NFPA-803, the prescriptive regulation for Fire Protection Standard for Nuclear Power Plant (NPP), has to be replaced with NFPA-805, whose main tenet is based on probabilistic analysis or quantitative approach. With this insight, this paper introduces the evaluation items that must be reviewed and selected for the fire risk evaluation and the sample Fire Model for their assessment when the new Standard is applied in NPP. In addition, it is suggested that there has to be some modification as well as complementary renewal in some parts of the fire modeling programs if these kind of tools are comprehensibly used with validity