• 한국소음진동공학회논문집
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• 제22권6호
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• pp.574-581
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• 2012

Condition-based maintenance(CBM) has been used as a useful concept for optimizing maintenance plan and decreasing maintenance cost in several kinds of plant sites. This study introduced an example that developed an integrated management system for maintenance parameters and hydraulic turbine of hydro-power plant in order to improve its maintenance strategy as applying CBM techinique. The integrated management system consists of three parts. One is a hardware part including PDA inspection system and several kind of precision measuring instruments. Another is a vibration monitoring system on hydraulic turbine. The other is a software part that takes charge of making hierarchy tree of maintenance parameters and their inspection route, managing accumulated database, assessing health condition of components, and supporting interface with other enterprise management system. The system has been installed at Chuncheon hydro-power plant for test and demonstration. It is expected that the system can contribute database construction for diagnostics and prognostics on facility health condition and systematic accumulation of know-how on operation and maintenance of plant.

• 한국구조물진단유지관리공학회 논문집
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• 제12권3호
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• pp.183-190
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• 2008

국가 중요시설물인 터널에 대한 유지관리업무는 관리주체별, 용도별, 터널 규모별로 각각 상이하게 수행되고 있다. 현재 각 관리주체별로 운영중인 국내 터널유지관리시스템을 분석해보면 수기 또는 초보적인 전산화만이 되어 활용도가 매우 저조한 것이 현 상태이다. 이에 본 연구에서는 터널의 계획, 설계, 시공 단계의 관련자료 뿐 아니라 보수 보강 이력 자료 등의 유지관리단계에서 조사된 여러 현장조사와 터널 스캐너에 의한 결과를 통합한 새로운 터널유지관리시스템을 구축하여 국내 여러 터널 현장에 적용한 후, 이의 적용성을 분석하였고, 터널 유지관리방법의 개선안을 제안하였다.

• Smart Structures and Systems
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• 제15권3호
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• pp.609-625
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• 2015

Management of infrastructure stock is essential in sustainability of society, and its analysis and optimization are studied in the light of control system modeling in this paper. At the first part of the paper, cost of stock management is analyzed based on macroscopic statistics on infrastructure stock and economical growth. Stock management burden relative to economy is observed to become larger at low economic growth periods in developed economies. Then, control system modeling of stock management is introduced and by augmenting maintenance actions as control input, dynamic behavior of stock is simulated and compared with existing time history statistics. Assuming steady state conditions, applicability of the model to cross sectional data is also demonstrated. The proposed model is enhanced so that both preventive and corrective maintenance can be included as system inputs, i.e., feedforward and feedback control inputs. Optimal management strategy to achieve specified deteriorated stock level with minimal cost, expressed in terms of preventive and corrective maintenance actions, is derived based on estimated parameter values for corrosion of steel bridges. Relative cost effectiveness of preventive maintenance is shown when target deteriorated stock level is lower.

• 산업경영시스템학회지
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• 제30권1호
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• pp.1-7
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• 2007

This paper addresses a the maintenance system based on the concept of RAMS (Reliability, Availability, Maintenance, Safety) for the effective maintenance of the urban transit. A systematic approach for developing a cost-effective maintenance strategy based on the component reliability of the system in question is performed according to the following steps : definition of function, functional failures of the systems, construction of RBD (Reliability Block Diagram), and the calculation of reliability indices. The developed preventive maintenance system generates maintenance plan and repair request based on the analysed RAMS data of components and maintenance experience.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.261-262
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• 2016

In Korea, Green building certification system had been operated for more than 10 years and Expired certification buildings are ever-increasing. However, post management of building and qualification standard for re-certification(G-SEED) aren't exist, certificated green building don't have smoothly maintenance and management. Therefore, analysing the status and situation of similar system such as building maintenance and management, to suggest the direction of evaluation for green standard for energy and environmental design.

• 융합경영연구
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• 제10권5호
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• pp.7-14
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• 2022

Purpose: This study discusses efficient operation plans in terms of public rental housing maintenance in terms of LH, a major supplier. Research design, data, and methodology: After reviewing problems related to the maintenance and management of public rental housing discussed in several previous studies, problems in technology setting for repair maintenance costs for public rental housing, lack of public assistance for maintenance and management of public rental housing, management of housing funds, and lack of role of local governments in the supply and repair of public rental housing were derived. Based on this, the researcher conducted using literature research methods to present relevant improvement measures based on reasonable arguments. Results: this study presented four operational plans related to (1) realization of repair costs for public rental housing, (2) a public subsidy system for covering the maintenance costs for public rental housing, (3) efficient operation of the Housing City Fund, and (4) establishment of the public rental housing. This study aims to provide a foundation for the qualitative growth of the domestic public rental housing system. Conclusions: With this study, it is expected that social interest in maintenance of public rental housing centered on LH will be amplified to improve the quality of maintenance problems of public rental housing.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.781-786
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• 2007

본 연구는 정부의 주거복지 지원계획과 관련한 공공임대주택의 양적인 공급 증가에 따라 유지관리의 필요성의 부각되고 있는 시점에서 현행 공공임대주택의 특성과 유지관리 시스템의 분석을 통해 장기적으로 유지관리방식의 문제점 개선과 효율성 향상을 위한 웹기반 유지관리 시스템으로의 발전가능성과 더불어 한계점도 파악해 보았다. 이 결과를 토대로 하여 PDA와 같은 IT를 활용한 유비쿼터스 장비의 이용가능성과 사용에 따른 기대효과를 제시함으로서 현재 연구${\cdot}$개발된 유지관리시스템의 문제점을 보완하여 사용자위주의 시스템을 제시하였다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.545-548
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• 2007

학교 시설물은 2006년 현재 10,876개의 초, 중, 고등학교가 운영되고 있고 임대형 민간투자사업(BTL)을 통한 학교시설물은 더 늘어날 전망이다. 하지만 향후 출산율 저하로 인한 인구 감소가 예상되므로 기존 시설물의 유지관리에 더 많은 관심과 노력이 필요할 것이다. 기존의 유지관리 체계는 일정 계획에 의한 것이 아닌 문제 발생 시 보수를 위한 사후보전적인 형태로 진행되고 있다. 따라서 본 연구에서는 기존문헌 고찰 및 설문조사를 통해 현행되고 있는 유지관리 업무의 현황을 분석하여 유지관리 업무의 절차를 개선하고 실무 담당자들의 요구가 반영된 유지관리 시스템을 제안한다. 이를 통해 유지관리 업무의 간소화와 예산운영의 투명성 및 각 담당업무별 정보전달을 원할하게 하여 유지관리 업무의 효율성을 높이고자 한다.

• 경영과학
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• 제9권1호
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• pp.41-52
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• 1992

The QOS(Quality of Service) recognized by the customer will become the most important thing under the competitive telecommunications market. Korea Telecom is going to develop many system to manage the telecommunication network, to improve the level of QOS, and to increase the revenue. Operation and Maintenance Adiministration System is one of the systems developed to meet those purposes efficiently. This system gathers qualities data from telephone offices or operation centers and analyze the results of QOS improvement activities and evaluate overall QOS. And also system makes it possible to improve the cost/effectiveness of operation and maintenance of telecommunication network. Operation and Maintenance Administration System has four functional modules, i.e., the user interface module, the database management module, the QOS management module, and the database conversion module. The purpose of this study is to develop the QOS management program, one of the four functional modules of the system,using FOCUS 4GL/DBMS. Since Operation and Maintenance Administration System is developed using FOCUS 4GL, every user can handle and maintain the system very easily and reduce system backlogs.

• 한국경영과학회지
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• 제6권2호
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• pp.7-11
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• 1981

An inspection-maintenance policy is investigated for a system having various states. A policy is characterized by the type of maintenance and the next inspection time. Maintenance actions are classified into various types according to the depth of maintenance. Policy evaluation criterion is the expected cost accumulated up to the failure of the system. The problem is formulated as a Markov decision process and an optimal policy is found by using a policy improvement procedure. A numerical example illustrates the policy for a system having five states.