• Korean Journal of Computational Design and Engineering
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• v.22 no.2
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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.

• Plant Journal
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• v.13 no.2
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• pp.39-45
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• 2017

This paper is a study on FEED validation model that can be used in the bidding stage of small utility equipment in offshore plant industry using system engineering technique. Currently, domestic marine plant equipment industry companies are faced with the financial risk of project execution as they enter marine plant. The major cause was the insufficient ability to verify the FEED output from the contractor (Engineering or Procurement and Construction) of the equipment manufacturer (COMPANY or EPC). Therefore, we propose FEED design verification method that simplifies the system engineering method that sequentially applies requirements analysis, function, performance analysis and physical architecture building process. Also, we verified the suitability of the developed model by comparing the results of applying the developed FEED verification model and the verification method that depends on the existing experience for the small utility equipment (Air Compressor).

• Journal of Energy Engineering
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• v.23 no.2
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• pp.183-190
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• 2014

A Commercial Grade Item Dedication(CGID) for Korean operating nuclear power plants has been implemented since 2012. The CGID implementation and strategies for Korea are established as follows: CGID policy establishment, R&D of a specific methodologies of CGID, enrollment of third party organizations for CGID work, CGID program establishment for enrolled suppliers, establishment of training courses for certification, and CGID process development for quality class Q and A. Consequently, it is expected that these activities are enable to enhance the reliability and the safety of components and/or parts in nuclear power plants.

• Journal of the Korea Furniture Society
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• v.20 no.5
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• pp.467-479
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• 2009

The high-tech computer technology developments have greatly affected the area of design education. Starting from the mid 80s, innovations in visual presentation methods have heightened with 2D computer graphic programs, CAD & 3D modeling, and Rapid Prototype that allows dimensional generation. The specialty and quality in design studio education have advanced due to the development in presentation methods such as Power Point and Keynote. But there are many problems with the current method of presenting the visual outcome in a data format using beam projectors, which is a vertical presenting method compared to the old studio study method of conducting discussions and reviews based on the substantial outcome. The essence of studio study that allows for comparisons and analysis by horizontally opening up the various work outcomes is being offset. Also the requirement for manual idea sketching work that plays an important role in the initial design phase continuing to decrease due to the digital working process dependence and cumbersome procedures in the presentation. In order to resolve this problem, the CALM system (Class Applied LCD Modular System) has been developed that replaces the method of attaching the sketches or renderings on the wall with a digital multi-display system. In a nutshell, individuals will upload the outcomes online and display them on the CALM system studio that is composed of 32 LCD (Columns: 4 $\times$ Rows: 8) monitors that are 19 inches in size so that various personnel can openly study the design outcomes. Also the central 42 inch PDP monitor that offers touch pad capability allows each design outcome to be described and examined by expanding. The concept phase of this development process has elevated to the production of an operating prototype that is being reviewed of its practicality. It is considered that the development of this system will decrease the extreme tendency of depending on digital operation but achieve revitalization of a more realistic and opened studio study environment compared to the individual consulting method of the old study approach.

• Journal of the Society of Disaster Information
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• v.8 no.4
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• pp.328-335
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• 2012

The resource-based estimating based on standard unit price of construction work was estimated by multiplying the price per standard unit of work on the amount of labor, material, equipment use time. However, limitation of the resource-based estimating way does not adequately reflect the actual transactions prices. On the subject of water tunnel excavation as a new attempt to overcome these limitations, this study analyzed productivity by work type into cutter inspection/ exchange, TBM maintenance, TBM inspection/refueling, subsequent installations, tramcar, operating change, a cave-underground reinforcement / rock reinforcement, safety / meetings and analyzed actual cost estimating and the net advance rate based on this analysis result. Actual cost estimating calculation approach presented in this study can be utilized as a useful tool to predict the actual cost estimating in the TBM water tunnels field.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.229-229
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• 2012

물관리는 밀레니엄개발목표(Millennium Development Goals)의 달성과정에서 가장 강조되는 주제 중의 하나이다. 물관리의 최종목표는 물관리 그 자체가 아니라 자연적으로는 유한한 수자원의 지속가능성을 유지하고 사회적으로는 계층간의 형평성을 실현하는 것이다. 그러나 개발도상국들은 한정된 국가재정으로 기반시설의 투자가 부족하고 기후변화에 따른 자연재해의 빈발로 인하여 인간다운 삶의 질을 보장받기 어려운 상황에 직면하여 있다. 이러한 인식 아래, 미국, EU, 일본 등의 선진국은 물론 이웃 중국도 개발도상국을 대상으로 물 관련 사업의 공적개발원조(ODA) 프로그램을 활발하게 추진하고 있다. 최근 우리나라의 대 개도국 협력사업은 한국국제협력단(KOICA)이 수행하는 ODA 사업을 중심으로 큰 폭으로 늘어나고 있다. 우리나라의 물 분야 지원사업도 식수개발, 댐건설, 관개시설 개발, 수질오염처리, 재해방지 예 경보 시스템 및 홍수조절사업 등으로 다방면에 걸쳐 활발하게 진행되어 왔다. 그러나 우리나라의 물 분야 ODA 사업은 정책 및 제도에 대한 컨설팅이나 교육훈련 등 소프트웨어 기반의 원조개발협력은 상대적으로 미진하고 물리적 인프라 위주의 지원사업이 대부분을 차지하고 있다. 최근에는 전문가 파견 및 연수생 초청 등의 인적협력의 사례가 증가하고 있으나 아직까지는 사업내용의 대부분이 건물, 시설물 및 기자재 등의 구조적인 지원 형태로 이루어지고 있다. 이러한 형태는 일찍이 대개도국 물 분야 사업을 추진한 미국이나 일본 등의 선진국들이 원조협력사업의 일관성과 지속성을 평가하기 위하여 제도적이고 정책적인 지원을 확대하는 것과는 거리가 있다. 1992년 KOICA가 네팔 모디강 수력발전소 실시설계 지원으로 시작된 우리나라의 물 분야 사업도 이제 20년에 이르고 있다. 물 분야 지원사업도 새로운 방향전환이 필요한 시점이다. 본 연구에서는 우리나라의 물 분야 ODA 지원사업의 현황과 문제점을 파악하고 향후 나아가야 할 정책방향을 제시한다. 이를 위하여 먼저 아시아의 스리랑카와 아프리카의 에티오피아의 2개 국가를 사례지역으로 선정하고 물관리의 현황과 문제점을 파악한다. 그리고 사례지역에 대한 우리나라의 물 분야 ODA 지원사업의 현황과 당면과제를 분석한다. 마지막으로 선진국과 우리나라의 물분야 지원사업의 추진방향을 비교분석하여 우리나라 물 분야 ODA 지원사업이 지향할 방향성을 제시한다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.37 no.12
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• pp.1483-1487
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• 2013

Water injection pump outputs oil with high pressure during this process, seawater is injected into the well to recover the well pressure and maintain high productivity. A water injection pump has high productivity, and therefore, it serves as a key piece of equipment in marine plants. In this light, water injection pumps are being studied widely in industry. In this study, the rotor dynamics is analyzed to determine the natural frequency according to the bearing stiffness and operation speed change. This study aims to establish the pump reliability through critical speed, stability, and unbalance response analysis.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.3
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• pp.341-346
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• 2008

This paper is to develop a monitoring system with diagnosis for smart cargo sensors that is for management and maintenance of the liquid cargo ships. The main goal of the system is to achieve the total automation system of the cargo sensor. By this study, the active smart sensor for the liquid cargo ships is designed and developed that guarantees high-confidence, stability, and durability. The proposed system consists of a monitoring part of the steam pressure, high-level monitoring, over flowing monitoring, gas monitoring, and tank temperature monitoring. The signals transferred from each unit system are used for sensor diagnosis based on confidence and accuracy. Finally, in this study, the total supervisory monitoring system is developed to maintain and manage the cargo effectively based on fault diagnosis and prognosis of the each sensor system.

• Korean Journal of Metals and Materials
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• v.48 no.11
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• pp.974-980
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• 2010

Various types of steel, namely, 0.35C, 0.2C-Cr, and 0.2C-Cr-Mo steels, were quenched and tempered by high-frequency induction heat treatment. The type, size, and spheroidization of the carbides varied depending on the tempering temperatures ($450{\sim}720^{\circ}C$). During the tempering process, the carbide was precipitated in the martensite matrix. The 0.35C, 0.2C-Cr, and 0.2C-Cr-Mo steels contained carbides that were smaller than 120 nm. The carbide was spheroidized as the tempering temperature increased. Owing to the fine microstructure and spheroidization of the carbides, all three steels had a high tensile strength as well as yield ratio and reduction of area. In the case of the 0.2C-Cr steel, the use of Cr as an alloying element facilitated the precipitation of alloyed carbides with an extremely small particle and resulted in an increase in the spheroidization rate of the carbides. As a result, a large reduction of area was achieved (>70%). The 0.2C-Cr-Mo steel had the highest tensile strength because of the high hardenability that can be attributed to the presence of alloying elements (Cr and Mo). Quenching and tempering steels by induction heat treatment resulted in a high strength of over 1 GPa and a large reduction of area (>70%) because of the rapid heating and cooling rates.

• Journal of Korean Library and Information Science Society
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• v.50 no.3
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• pp.191-216
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• 2019

This study is to suggest the revitalization plan of the medical school libraries in the future, on the basis of analysis for the overall operation situation of the medical school libraries among the medical libraries. So based on the website, it is divided into 1) whether independent homepage exists, 2) service target, 3) books, 4) classification system, 5) manpower, 6) facilities (area, number of seats available), 7) equipment (pc, printer, copy machine, etc.), 8) services, and then analyzed. Consequently, as the ways to revitalize the medical libraries, firstly, it is necessary to establish legal standards and develop guidelines for the medical school library's books, sizes, librarians, etc. Secondly, establishing a cooperative community network between medical school libraries is necessary. Thirdly, policies such as support at the national level, specialization education of librarians, development of operational guidelines, and activation of inter-library networks are needed to revitalize the medical school libraries. It is also expected that research on the actual situation of the medical libraries should be conducted at the national level or at the level of the association of medical libraries.