Results 1 - 10 of 82
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[en] The purpose of this paper is to analyze the guidelines for the management of plutonium adopted in 1998 by the nine countries that are utilizing plutonium to enhance the transparency of the plutonium utilization
[en] In this paper I would like do describe a formulation of the complex angular momenta in potential scattering based on the Lippmann-Schwinger integral equation rather than on the Schrödinger differential equation. This is intended as a preliminary to the paper by SAWYER on the Regge poles and high energy limits in field theory (Bethe-Salpeter amplitudes), where the integral formulation is definitely more advantageous than the differential formulation.
[en] The US and Switzerland enforced a new nuclear cooperation agreement in June 1998. After extended negotiation for the new nuclear cooperation agreement, Switzerland accomplished to get the advance, long-term consent approach, not to allow the US's prior consent right on the spent fuel used in the US-origin reactors, and to specify conditions for the suspension of advance, long-term consent. This paper analyzes the contents and implications of the revision of the nuclear cooperation agreement between the two countries
[en] This study contains its national supports on the INPRO CPs which the ROK participate the project and are actively operated. It is also supports the international development of the infrastructure guideline for the Common User Considerations. In this study, it is also have the case study on the critical success factors of the INPRO as one of the international nuclear cooperation projects
[en] This paper analyzed the final declaration adapted at the sixth review conference of the parties to the treaty on the non-proliferation of nuclear weapons held at UN headquarters in New York, from 24 April until 19 May 2000 and prospects international nuclear trends
[en] For the understanding of the influences of some states to nuclear activities of other states in the perspective of nuclear nonproliferation, it is necessary to understand conceptual models under which those states assess the proliferation risk of a state. This paper introduces a nuclear proliferation risk assessment model suggested by Meyer and analyzes its implications to nuclear development and utilization in Korea
[en] This paper analyzes the trend of international nuclear export control system which has been strengthened since 9.11 terrorism and the problems of the amended guidelines which are being applied to the national regulation of each participating governments
[en] In this project the following scope and contents were formulated. First, this study focused on the establishment of a professional network for ROK-U.S. nuclear cooperation by identifying and inviting key personnel who have been involved in the ROK-U.S. nuclear cooperation agreement, leading U.S. nuclear technology experts, and members of important organizations associated with nuclear non-proliferation. Joint workshops and seminars were organized and held and a series of site visits to nuclear facilities were made. Second, an in-depth analysis was performed on U.S. policies on nuclear energy and nuclear non-proliferation, and on the current status of the nuclear industry, which has a substantial impact on the development of future nuclear systems in Korea. In addition, a multi-approach strategy toward ROK-U.S. nuclear cooperation was proposed and evaluated by analyzing U.S. Congressional positions on nuclear cooperation agreements with other countries. Third, justifiable reasoning for a strategic ROK-U.S. nuclear cooperation partnership and a rational for its enhancement were formulated and communicated to appropriate personnel and organizations so that joint development can be sustained for nuclear technology associated with advanced fuel cycle technology. In preparation for future ROK-U.S. negotiations on bilateral cooperation for pyro-processing technology development, which is to start immediately after the completion of the 10 year joint fuel cycle study (JFCS), it is also necessary to put every effort toward cultivating a favorable international environment between the two countries by strengthening the basis of ROK-U.S. nuclear cooperation, promoting the understanding of the Korean nuclear program, and strengthening analysis of the U.S. nuclear energy and nonproliferation policy trends.
[en] In case of Large LOCA without ECC in CANDU-6 reactor those 95 fuel channels at the downstream of the break, called critical core pass, will undergo a severe loss of coolant and significant channel voiding and experience a rapid power excursion stopped by a prompt reactor trip, so called power pulse phenomenon. In this case the acceptance criteria of fuel channel design is summarized to two points. The prevention of the fuel channel integrity impairment by abrupt fuel breakup during power pulse. And the prevention of the impairment of the pressure tube integrity by overheating of the fuel channel during post-blowdown period. One most probable way of jeopardizing the fuel channel integrity is the dryout of the calandria tube due to the contact of pressure tube and calandria tube. The objective of this study is to develop a new fuel channel safety analysis system covering both the blowdown analysis including the power pulse and the post-blowdown analysis with the same safety analysis code, CATHENA in a consistent way. This new safety system for fuel channel analysis is better than the previous one which use CATHENA for the blowdown analysis and CHAN-II for the post-blowdown analysis in many respects, such as consistency in the computer code as well as the modeling methods, reducing the area of uncertainties in the modeling and calculation. For this aim the existing CATHENA subchannel fuel channel model for post blowdown analysis has been modified, and improved, and a processing program that conveys all the final status of the fuel channel at the end of blowdown analysis to the post-blowdown analysis as the initial condition has been developed, and tested for its proper implementation for the intended purposes. The results obtained so far for the whole blowdown- post-blowdown analysis for the representative fuel channels shows good agreement to the previous ones for Wolsong 2,3,4, and shows a consistent performance in overall. For the validation of this new system an independent study for developing CFX model for a fuel channel post-blowdown experiment, CS28-1, is being carried out and based on the success of this study a benchmark problem for the post-blowdown fuel channel analysis for the 37-element standard fuel will be generated
[en] Bowing and swelling of the assembly duct have occurred due to high operating temperature and high neutron flux in LMFBR. Since such deformations can affect the core reactivity change, the integrity of the assembly duct, the withdrawal force etc., the options which can accept the mechanical behavior of the assembly ducts should be considered in the design of LMR. This study analyzes major parameters such as the core environments, the material characteristics, the geometrical conditions by updated CRAMP with the characteristics of duct material for KALIMER. Among these parameters, pad gap is identified as the most important parameter which can accept the core environments (such as flux, temperature, pressure, refueling scheme) without deteriorating the in-reactor performance of the duct. Therefore, the sensitivity analyses mainly associated with pad gap are also carried out