• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.1319-1322
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• 2003

KAERI is developing the Advanced Spent Fuel Conditioning Process (ACP) as a pre-disposal treatment process for spent fuel. Equipment used for such a spent fuel recycling and management process must operate in intense radiation fields as well as in a high temperature. Therefore, remote maintenance has a played a significant role in this process because of combined chemical and radiological contamination. Hence suitable remote handling and maintenance technology needs to be developed along with the design of the process concepts. To do this, we developed the graphic simulator for the ACP. The graphic simulator provides the capability of verifying the remote operability of the process without fabrication of the process equipment. In other words, by applying virtual reality to the remote maintenance operation, a remote operation task can be simulated in the graphic simulator, not in a real environment. The graphic simulator will substantially reduce the cost of the development of the remote handling and maintenance procedure as well as the process equipment, while at the same time producing a process and a remote maintenance concept that is more reliable, easier to implement, and easier to understand.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.3
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• pp.38-44
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• 2009

This paper presents a new windows application based on 3-D graphics and Text-To-Speech (TTS) for effective management of substation equipment. When problems in a power system occur, inexperienced power system operators may have difficulty in understanding the situation as well as finding suitable countermeasures quickly. This paper addresses an effective scheme to visualizing power system equipment under normal and abnormal conditions using 3-D graphics and animations. In addition, the state variations and the order of maintenance priority of substation equipment are represented by TTS and intuitive methods. The proposed system can help power system operators to more quickly understand the state of power system equipment, and it can provide operators with the suitable countermeasures for minimizing damage caused by equipment problems.

• Journal of the Korean Society for Railway
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• v.9 no.4 s.35
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• pp.504-509
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• 2006

Currently, most of TDIS(Train Destination Indicator System) is operated colored-LED type equipment in Korea. This current LED type TDIS equipment has not graceful display and causes passenger's fatigues because of the LED module inherent characteristics as a display light source, high power consumption, high operating and maintenance costs, and et al. To address these several, we are developed new colored-LCD type TDIS equipment. According to our developed new TDIS equipment, we can achieve high resolution and graceful color stone of information display. Thus high graded service are able to provide to passengers. In addition, LCD module decreases power consumption, and it can be used permanently by changing only backlight in comparison with conventional equipment. Therefore we can decrease the maintenance cost and extend durability-period of TDIS equipment using new equipment.

• Fire Science and Engineering
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• v.23 no.3
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• pp.48-60
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• 2009

The field of fire administration has been reinforced and intensified with the manpower and all sorts of equipment, but since the consequence that was mainly given undue value to the quantitative expansion, some problems in the aspect of maintenance and management have been emerged. Characteristically, though, fire equipment should be highly practical, economically efficient and durable, and also have the effectiveness of utilizing them to the right place, maintaining and managing are not as appropriate as they need to have. Therefore, the research provide the effective measures of operating fire equipment by making a comparative study of problems drawn by the analysis of actual conditions on the maintenance and the management of fire equipment.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.1126-1131
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• 2008

In this paper we introduce an applicable RCM(Reliability centered maintenance) method for Track circuit equipment of AREX's Signalling System. AREX computerize all the process of FRACAS(Failure Reporting, Analysis and Corrective Action System)) by the Facility Management System of Integrated Information System. These datum were analysed and reproduced as the RAMS index value which can be used by maintenance staff for optimizing the maintenance method of the System.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2005.11b
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• pp.60-75
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• 2005

The remote operation of the Advanced Spent Fuel Conditioning Process (ACP) is analyzed by using the 3D graphic simulation tools. The ACP equipment operates in intense radiation fields as well as in a high temperature. Thus, the equipment should be designed in consideration of the remote handling and maintenance. As well as suitable remote handling and maintenance method needs to be provided. To provide such remote operation technology, we developed the graphic simulator which provides the capability of verifying the remote operability of the ACP without fabrication of the process equipment. In other words, by applying virtual reality to the remote maintenance operation, a remote operation task can be simulated in a computer, not in a real environment. In this way the graphic simulator can substantially reduce the design cost of the remote operation process and the equipment. Also it can provide new operation concept that is more reliable, easier to implement, and easier to understand.

• Proceedings of the KIEE Conference
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• 2007.11b
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• pp.288-290
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• 2007

This paper presents a visualization application using 3D-graphics for effective maintenance of power equipment. The maintenance algorithm implemented in the application is based on Condition-Based Maintenance (CBM) and Reliability -Centered Maintenance (RCM). The main frame of the developed application was made up based on Windows Application Programming Interface (API) and Microsoft Fundamental Classes (MFC). In order to develop the interactive 3D application, the WorldToolKit (WTK) library based on Open GL was used. Also Text-to-Speech (TTS) technology was used to enhance the efficiency of operators. The developed application can help the power system operators to intuitively recognize the present state and maintenance information of the equipment.

• Journal of the Korean Society for Railway
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• v.6 no.2
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• pp.108-113
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• 2003

The safety of staff, customers and of general Public in general viewed as one of the most important requirements in the urban transit. The maintenance computerization system for car of urban transit is a part of standardization and development of urban transit system, and We have been performed the establishment of maintenance computerization system from 2001 to 2005. The RAMS(reliability, availability, maintainability and safety) estimation for maintenance computerization system are utilized in a variety of computerization system for user's convenience and safety in maintenance. Ever since its inception though, the urban transit has searched for ways to improve reliability, availability, maintainability and safety of the railway subsystem. Provision of a reliable maintenance system include RAMS of the vehicles plays a very important role in achieving a safe system.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.273-274
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• 2020

본 논문에서는 부가가치가 높은 군용 장비류의 해외정비품을 국내정비로 전환하기 위한 절차 중 최종 성능평가 절차를 제안하였다. 기존의 절차는 해외정비품의 성능시험을 위한 정비능력 개발시 개발된 국산화 시험장비의 유효성 검증을 위한 명확한 절차가 마련되지 않아 소요군 혹은 실무자에 따라 최종성능평가의 기준이 다른 점이 발생하였다. 따라서 본 연구에서는 통일화된 절차를 연구하여 제안하였다. 제안한 이 절차는 통일된 기준 마련을 통해 해외도입 시험장비와 국산화된 시험장비의 상호 같음을 검증하여 해외로 나가는 정비대상품을 국내정비로 전환하였을 때 품질면에서 동일함을 보증하기위한 중요한 수단이 될 것이라 기대한다.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.19 no.1
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• pp.6-10
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• 2023

Only about 10% of selected equipment in nuclear power plants are monitored by wiring to address failures or problems caused by vibration. The purpose is primarily for preventive maintenance, not for predictive maintenance. This paper shows that vibration monitoring and diagnosis using Industrial 4.0 enables the complete predictive maintenance for all vibrating equipments in nuclear power plants with the convergence of internet of things; wireless technology, big data through periodic collection and artificial intelligence. Predictive maintenance using wireless technology is possible in all areas of nuclear power plants and in all systems, but it should satisfy regulatory guides on electromagnetic interference and cyber security.