• Nuclear Engineering and Technology
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• 제50권5호
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• pp.683-689
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• 2018

To evaluate equipment survivability of the polymer Viton, used in sealing materials, the effects of its thermal degradation were investigated in severe accident (SA) environment in a nuclear power plant. Viton specimens were prepared and thermally degraded at different SA temperature profiles. Changes in mechanical properties at different temperature profiles in different SA states were investigated. The thermal lag analysis was performed at calculated convective heat transfer conditions to predict the exposure temperature of the polymer inside the safety-related equipment. The polymer that was thermally degraded at postaccident states exhibited the highest change in its mechanical properties, such as tensile strength and elongation.

• 대한기계학회논문집A
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• 제35권6호
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• pp.683-691
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• 2011

원자력발전소 용 솔레노이드 밸브의 국산화에 필수 과정인 기기검증 기술을 개발하기 위해 관련 규정을 분석하고, 시험절차 및 방법, 시험조건, 시험장치 및 허용기준 등을 구체화하였다. 솔레노이드 밸브의 기기검증 규격은 법규, 가이드, 규정 등의 순으로 계층화되어 있으며, 시험기기와 시험항목에 따라 규정이 세분화되어 있다. 세부 규정인 IEEE를 분석한 결과 기기검증 시험은 크게 기능시험, 일반환경시험 및 사고시험으로 구분되어 있는데, 일반환경시험과 사고시험을 통해 발전소 환경과 동일한 조건에서 솔레노이드 밸브를 노화시킨 후 기능시험에서 노화된 밸브의 성능을 확인하는 방식으로 검증시험을 수행하도록 구성되어 있었다. 본 논문에서 제시한 솔레노이드 밸브의 기기검증 시험절차와 방법은 기기검증 수행자뿐만 아니라 밸브 제조사에게 매우 유용한 기술 자료가 될 것으로 판단된다.

• 원자력산업
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• 제3권4호통권14호
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• pp.19-22
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• 1983

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2008년도 춘계학술대회논문집
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• pp.84-87
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• 2008

The sulfur oxides is one of important materials to come about air pollution at thermal plant consuming fossil fuel. The several flue gas desulfurization equipments are installed and operated to decrease sulfur oxides. The flue gas desulfurization of our thermal plant is designed for optimizing flue gas desulfurization technical development and research by Korea Electric Power Research Institute. We operate this desulfurization equipment. Now, our country imports nearly 97 percentage of the energy source and competes with the world for the energy because of the rise of raw materials cost. The fuel cost decrease of power plants is the most important factor of the operation. The fuel used in the experiment is the domestic anthracite from Kangwon Taeback and the bituminous coal from Russia,Taldinsky Mine. This Study is experimental investigations of desulfurization characteristics for domestic anthracite power plant by increasing bituminous coal. We surveyed possible parameters and conducted the performance about desulfurization equipment in Y.D thermal power plant.

• 대한기계학회논문집A
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• 제38권10호
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• pp.1075-1084
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• 2014

플랜트 설계를 위해서는 기자재 카탈로그를 구축해야 한다. 기자재의 3 차원 CAD 모델은 목적에 따라 서로 다른 상세도를 가진다. 기자재 제작사는 높은 상세도를 갖는 CAD 데이터를 제공하는 반면에 플랜트 엔지니어링사는 낮은 상세도를 가지는 CAD 데이터가 필요하다. 이와 같은 문제를 해결하기 위해서 기자재 3D CAD 조립체 데이터를 자동으로 간략화하는 시스템을 개발하였다. 이 논문에서는 간략화 시스템의 구조, 상세 기능과 함께 카탈로그 생성을 위한 중립 데이터 형식을 제안한다. 그리고 프로토타입 시스템을 이용한 간략화 실험 결과를 설명한다.

• 한국CDE학회논문집
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• 제22권2호
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• pp.150-161
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• 2017

Effective data exchange among the diverse stakeholders participating in a process plant project is an important issue. ISO 15926 is an international standard to support sharing and integrating of process plant data. iRINGTools is an ISO 15926-based tool used to exchange plant data. To exchange plant data using iRINGTools, the mapping between the data model of a commercial system and ISO 15926 should be preceded. To accomplish this, types and properties of equipment and materials used for plant design should be predefined and these data should be represented as user-defined reference data complying with ISO 15926. Besides, the user-defined reference data should be serviced by a reference data server such that iRINGTools searches reference data from the server and utilizes the data for the model mapping. In this paper, we present a method to construct a reference data server and use it for the model mapping in iRINGTools. The proposed method is verified through experiments of exchanging specifications data of equipment and materials using iRINGTools.

• 플랜트 저널
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• 제4권4호
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• pp.71-77
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• 2008

The sulfur oxides is one of important materials to come about air pollution at thermal plant consuming fossil fuel. The several flue gas desulfurization equipments are installed and operated to decrease sulfur oxides. The flue gas desulfurization of our thermal plant is designed for optimizing flue gas desulfurization technical development and research by Korea Electric Power Research Institute. We operate this desulfurization equipment. Now, our country imports nearly 97 percentage of the energy source and competes with the world for the energy because of the sudden rise of raw materials cost. The fuel cost decrease of power plants is the most important factor of the operation. The fuel used in the experiment is the domestic anthracite from Kangwon Taeback and the bituminous coal from Taldinsky Mine in Russia. This Study is experimental investigations of desulfurization characteristics for domestic anthracite power plant by increasing bituminous coal. We surveyed possible parameters and conducted the performance about desulfurization equipment in Yong Dong thermal power plant.

• 한국유체기계학회 논문집
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• 제16권5호
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• pp.18-23
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• 2013

Thermal aging test is performed to qualify the life time of equipment in thermally aged condition. Due to long life time more than 10 years like as in power plant, the equipment is subjected to the accelerated thermal aging condition which is able to shorten the long aging test period by increasing aging temperature. Normally, conservatism of thermal aging test causes to impose unbalanced and excessive thermal load on components of the equipment, and deformation and damage problems of the components. Additionally, temperature rise of each component through heat generation of the electric equipment leads to long-term problem of the test period. Multi-phase accelerating aging test is to perform thermal aging test in multiple aging conditions after dividing into groups with various components of equipment. The groups might be classified considering various factors such as activation energy, temperature rise, glass transition temperature and melting temperature. In this study, we verify that the multi-phase accelerating aging test method can reduce and equalize the thermal over load of the components and shorten aging test time.

• 원자력산업
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• 제5권4호통권26호
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• pp.21-24
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• 1985

• 원자력산업
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• 제3권4호통권14호
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• pp.23-28
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• 1983