• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.167-172
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• 2006

최근 해외 건설시장 플랜트 분야의 수주 증대에 따라 오일 ${\cdot}$ 가스 분야의 프로젝트가 증가하고 있다. 따라서 국내 건설 산업 업체들의 해외 플랜트 사업의 경쟁력을 확보하기 위해서는 기술 경쟁력 확보, 생산성 향상, 전략적 정영 추진 등 적극적인 대처 방안 수립이 요구되고 있다. 그 중에서도 해외 플랜트 사업의 오일 ${\cdot}$ 가스 분야는 산업 경쟁력 향상을 위하여 프로젝트 수행과 관련한 EPC(Engineering Procurement Construction : 이하 EPC) 유통 정보의 활용이 더욱 요구되지만, EPC 단계별 다양한 업무에서 발생하는 유동정보 콘텐츠를 효율적으로 관리하기 위한 콘텐츠 분류체계가 제시되고 있지 못하고 있다. 그로 인하여 설계도면의 변경, 중복업무의 발생, 업무주체간의 정보 누락 등의 문제점이 발생하고, 그러한 문제점으로 인하여 생산성 저하 현상이 나타나고 있다. 따라서 본 연구는 오일 ${\cdot}$ 가스 분야의 콘텐츠 관리체계의 실무적 활용의 증대와 건설산업 정보관리의 효용성을 향상시키기 위하여 콘텐츠 관리 체계를 확립하기 위한 BPM(Business Process Management) 기반의 콘텐츠 분류 체계를 제시하고자 한다. Business Process별 요구되는 지식의 유형을 체계화하고, 콘텐츠 정보를 분석하여 산업설비 유동정보의 체계화를 정립하고자 한다.

• 시스템엔지니어링학술지
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• 제11권2호
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• pp.1-11
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• 2015

During the industrial plant system life cycle, required technologies are developed and assessed to analyze their performance, risks and costs. The assessment is called technology readiness assessment (TRA) and the measure of readiness is called technology readiness level (TRL). The TRL consists of 9 levels and through the TRL assessment, the technology to be developed and its components are assigned to their appropriate TRL. TRL assessment should be performed in each life cycle stages to monitor the technology readiness and analyze the potential risks and costs. However, even though the concept of TRL has been largely adopted by numerous organizations and industry, direct and clear assignment of target TRL for each life cycle stage has been overlooked. Direct mapping/assignment of target TRL for each life cycle has benefits as follow: (1) the technical risks condition of each life cycle stage can be better understood, (2) cost incurred if the technology development is failed can be analyzed in each life cycle stage, and (3) more effective decision making because the technology readiness achievement for each life cycle stages is agreed beforehand. In this paper, we propose a steel-making plant system life cycle and TRL assignment to each of the system life cycle stage. By directly assigning target TRL for each life cycle stages, we look forward to a more coordinated (in terms of exit criteria) and highly effective (in terms of technical risks identification and eventually prevent project failure) technology development and assessment processes.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1304-1308
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• 2005

This paper presents the case that the existing analog control systems were retrofitted with digital DCS(Distributed Control System)s for boiler unit in thermal power plant. Replacement of existing worn-out or obsolete analog control systems has been considered. Replacement of existing analog control systems with another analog control systems has lots of difficulties in maintaining the systems due to being out of stock. Due to those difficulties, existing analog control systems have been retrofitted with digital DCSs in many industrial sites. KEPRI(Korea Electric Power Research Institute) accomplished the project that retrofitted analog control systems with the developed DCSs for boiler unit in middle-scale coal-fired thermal power plant. The benefits of an upgrade to digital control include a increase of reliability due to system redundancy, ease of modifying the control logic and the parameters of function block, ease of maintenance due to available spare parts, improvement of information display, ease of modifying MMI(Man Machine Interface) displays, a increase in system availability, and improvement of control performance. This paper describes how to use the parameters of existing analog controllers, the implementation of digital PID controller, control system configuration for boiler unit in thermal power plant, some boiler control loops, control result during commissioning, and the comparison of boiler characteristic test data after retrofitting with the existing test data.

• 대한인간공학회지
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• 제23권3호
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• pp.121-134
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• 2004

A research project was conducted to study work-related musculoskeletal disorders （MSDs） at subway train repair plant in Korea. The project was consisted of 4 main parts; education on the topics of MSDs for all workers, symptom survey, medical check-up, investigation of MSD risk factors. The result of symptom survey showed that 95.2％ of the respondents complained pains on at least one part of the body. After cross-sectional analysis of various information and risk factors, 86.8％ of respondents were considered as active health surveillance level 1 that require continuous monitoring on their symptoms and working conditions. And 57.1％ of the respondents were considered as active health surveillance level 2 that needed medical check-ups for proper medical treatment. The analysis of occupational risk factors revealed that handling of heavy object (46.15％) and repeated awkward postures (46.15％) were two most contributing risk factors for the on-set of MSD at this work site followed by static strain (7.7％), and vibration and impact (3.8％). Medical examination was performed by an industrial medicine MD on 156 workers those considered as active health surveillance level 2. The result showed that 35 workers (20.7％) were considered as MSD patient group at severe level, and 68.6 workers (68.6％) were considered as moderate group and 18 workers (10.6％) were considered minor or normal group those have no symptom.

• 한국건설관리학회논문집
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• 제10권5호
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• pp.3-15
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• 2009

최근 해외 건설시장 플랜트 분야의 수주 증대에 따라 오일 가스 분야의 프로젝트가 증가하고 있다. 따라서 국내 건설 산업 업체들의 해외 플랜트 사업의 경쟁력을 확보하기 위해서는 생산성 향상 기술 경쟁력 확보 전략적 경영 추진 등 적극적인 대처 방안 수립이 요구되고 있다. 그 중에서도 해외 플랜트 사업의 오일 가스 분야는 산업 경쟁력 향상을 위하여 프로젝트 수행과 관련한 EPC(Engineering Procurement Construction) 유통 정보의 활용이 더욱 요구되지만, EPC 단계별 다양한 업무에서 발생하는 유통정보 콘텐츠를 효율적으로 관리하기 위한 콘텐츠 분류체계가 제시되고 있지 못하고 있다. 그로 인하여 설계도면의 변경, 중복업무의 발생, 업무주제간의 정보 누락 등의 문제점이 발생하고 있다. 이런 문제점으로 인하여 시장점유율이 감소하고 있으며 경쟁력이 약해지고 있다. 따라서 본 연구는 오일 가스분야의 콘텐츠 관리체계의 실무적 활용의 증대와 건설산업 정보관리의 효용성을 향상시키기 위하여 콘텐츠 관리 체계를 확립하기 위한 BPM(Business Process Management) 기반의 콘텐츠 분류 체계를 제시하고, 국내기업의 경쟁력이 가장 낮은 설계단계의 Business Process를 정의하고 요구되는 지식의 유형을 체계화하고, 콘텐츠 정보를 분석하여 설계단계 산업설비 유통정보의 체계화를 지원하고자 한다.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.149-156
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• 2020

Blast furnace revamping in steel industry is one of the most important work to complete the complicated equipment within a short period of time based on the interfaces of various types of work. P company has planned to build a Smart Tracking System based on the wireless tag system with the aim of complying with the construction period and reducing costs, ahead of the revamping of blast furnace scheduled for construction in February next year. It combines the detailed design data with the wireless recognition technology to grasp the stage status of design, storage and installation. Then, it graphically displays the location information of each member in relation to the plan and the actual status in connection with Building Information Modeling (BIM) 4D Simulation. QR Code is used as a wireless tag in order to check the receiving status of core equipment considering the characteristics of each item. Then, DB in server system is built, status information is input. By implementing BIM 4D Simulation data using DELMIA, the information on location and status is provided. As a feature of the S/W function, a function for confirming the items will be added to the cellular phone screen in order to improve the accuracy of tagging of the items. Accuracy also increases by simultaneous processing of storage and location tagging. The most significant effect of building this system is to minimize errors in construction by preventing erroneous operation of members. This system will be very useful for overall project management because the information about the position and progress of each critical item can be visualized in real time. It could be eventually lead to cost reduction of project management.

• 대한조선학회논문집
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• 제57권2호
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• pp.70-79
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• 2020

The offshore installation units may be subjected to various accidental loads such as collision from supply vessels, impact from dropped objects, blast load from gas explosion and thermal load from fire. This paper deals with the design and strength evaluation method of the stiffened plate structures in response to a blast load caused by a gas explosion accident. It is a comprehensive review of various items used in actual project such as the size and type of the explosive loads, general design procedure/concept and analysis method. The structural analyses using simple analysis methods based on SDOF model and nonlinear finite element analysis are applied to the particular FPSO project. Also validation studies on the design guidance given by simple analysis method based on SDOF model have also considered several items such as backpressure effects, material behavior and duration time of the overpressure. A good correlation between the prediction made by simple analysis method based on SDOF model and nonlinear finite element analysis can be generally obtained up to the elastic limit.

• 한국농공학회지
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• 제12권4호
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• pp.2090-2123
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• 1970

This paper is a report on the research of experimental model test of Andong Fill Dam, which has been planned by the Government of Korea as a project, of its over-flowing capacity in spillway, creation of minus pressure and structure of anti-water impulse in over-flow weir. Andong Fill Dam is one of the project of master development plant for water resources, locating at Nakdong River side of Korea, and is aimed to have a multi-purpose dam for flood-control, irrigation, water power, urban and industrial water supply. This dam is planned to erect in fill-dam type due to the improper soil foundation and condition for concrete dam. The refore for the proper and advantageous points, this is designed as center core fill dam. By a model minimized of Andong Fill Dam, held an experimental model test on water quentity of reservir, discharges of overflow part, low pressure and anti-water impulse of overflow part, which was conducted an experiment by flowing aspects through each section of spillway to find the changes of water pressure and that of water level, and corrected the section of each part in order to conduct a check on the creation of minus pressure not to be over acted to the allowable bundary of the section structure; and for the prevention of concentated scouring at the down stream side of flow.

• 한국산학기술학회논문지
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• 제18권12호
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• pp.466-472
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• 2017

본 연구의 목적은 곰팡이 28S rDNA 염기서열의 메타분석을 통하여 반추위 곰팡이의 다양성을 조사하는데 있다. 'rumen'과 'ruminal'이 반추위 곰팡이 유래 염기서열들을 회수하기 위한 검색어로 사용되었다. 2016년 9월부로 모든 28S rDNA 염기서열이 보관되어 있는 Ribosomal Database Project(RDP, http://rdp.cme.msu.edu) 데이터베이스에서 반추위 곰팡이 유래 28S rDNA 유전자 염기서열(n=165)을 획득하였다. 총 165개의 염기서열은 분류학상의 '문(phylum)'인 Ascomycota, Neocallimastigomycota 및 Basidiomycota로 분류되었고, 165개의 염기서열 중에서 각각 109개, 48개, 8개의 염기서열을 차지하였다. Ascomycota 염기서열은 식물병원성곰팡이나 마이코톡신을 생성하는 곰팡이를 포함하고 있는 '속(genus)' Pseudonectria, Magnaporthe, Alternaria, Cochliobolus, Cladosporium 및 Davidiella로 분류되었다. 또한, Basidiomycota 염기서열은 식물병원성곰팡이를 포함하고 있는 '속(genus)' Thanatephorus와 Cryptococcus로 분류되었다. 뿐만 아니라, Neocallimastigomycota 염기서열의 경우 섭취된 조사료의 주요 구조탄수화물을 분해하는 '속(genus)' Cyllamyces, Neocallimastix, Anaeromyces, Caecomyces, Orpinomyces, Piromyces로 분류되었다. 본 연구는 처음으로 28S rDNA 염기서열의 메타분석을 통해 반추위 곰팡이 다양성에 대한 정보를 통합적으로 제공하였다. 본 연구의 결과는 향후 반추위 곰팡이 연구에 대한 방향을 제공할 것이고, 새로운 분석도구 개발에 응용될 수 있을 것이다.

• 공업화학
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• 제19권4호
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• pp.376-381
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• 2008

화력 발전소에서 발생되는 질소산화물(NOx)을 제거하기 위하여 환원제로써 $NH_3$를 이용한 선택적 촉매환원법(Selective Catalytic Reduction: SCR)에 사용되는 $V/TiO_2$ 촉매의 활성저하에 관하여 연구하였다. 장기간 배기가스에 노출된 촉매(Used-cat)의 활성과 비표면적이 상당히 감소되었다. 촉매의 특성분석은 XRD, FT-IR, FE-SEM, IC/ICP 등을 이용하여 수행하였다. 분석결과 배기가스에 노출되지 않은 사용 전 촉매(Fresh-cat)와 사용 후 촉매(Used-cat) 두 촉매 모두 $TiO_2$의 결정구조는 변하지 않았다. 그러나, FT-IR, FE-SEM, IC/ICP에 의한 촉매의 특성분석결과 사용 후 촉매(Used-cat) 표면에 $(NH_4)HSO_4$가 침적이 되었음을 확인하였다. 또한, $SO_2$에 대한 내구성이 우수한 촉매일수록 표면에 형성되는 황산염($SO_4^{-2}$)이 적게 형성됨을 확인할 수 있었다.