• 한국가스학회지
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• 제23권5호
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• pp.35-43
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• 2019

플랜트시설의 핵심부품인 산업용 밸브에 대한 기존안전관리는 인력에 의해 관리되고 있으며 점검 영역이 넓고 시설물의 특성상 제한된 접근성을 가지고 있기 때문에 어려움이 있다. 플랜트 시설의 수많은 산업용 밸브에서 누출 및 고장 발생 시 생산중단, 독성물질 및 가연성 가스의 누출 및 폭발로 인한 인명피해, 사고 위치 파악 어려움 등의 문제점이 발생되기 때문에 사물인터넷(IoT) 기술을 기반으로 한 안전관리 및 제어 시스템이 필요하다. 이 연구에서는 IoT 기반 무선통신을 통한 산업용 밸브의 안전관리 및 액츄에이터 제어 시스템 개발 내용 중에서 위험요소 예측기술 개발과 관련 된 내용이다. 밸브의 구조적 특성 분석을 하고 고장데이터, 문헌 등으로 부터 주요 위험요소 분석, 위험요소 원인분석 및 사고시나리오 분석을 통해 주요 위험요소로 인한 사고를 예방하기 위해 IoT 기반 산업용 밸브의 안전관리 기법을 개발하였다.

• 한국생활과학회지
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• 제18권5호
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• pp.1155-1168
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• 2009

The purpose of this research is to investigate the realities and problem cases that occurred in the establishment and management of elderly housing facility in order to suggest the recommendations that help to improve the problem cases. For this purpose, 21 elderly housing facilities, which were established between 1996 and 2008 in Korea, were investigated with a documentary research method in terms of founders, managers, locations, the number of housing units, how to move-in. Also the problem cases that occurred in the establishment and management of 21 elderly housing facilities were investigated. The results were as followings. 1. Main founders and managers of 21 elderly housing facilities were the special companies for elderly housing, building companies, and social welfare corporation. Changes in the founders and managers were caused by financial problems; More than half of 21 elderly housing facilities were located in Seoul and near area; About a half of 21 elderly housing facilities had 100~200 housing units; An individual unit of elderly housing facilities can be rented or purchased, rented only, and purchased only. 2. The problems in the establishment and management of elderly housing facilities were non-return of deposit money, illegal sale of housing units, non-public registration of elderly housing facility, false advertisement, and unfair contract. 3. The problems in the establishment and management were mainly caused by the weakness in the regal and administration system for elderly housing and the illegal acts of founders and managers.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.2144-2145
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• 2011

We carry out a demonstration project to verify performance of a Home- Smart Cabinet Panel(H-SCP) at the child care facility. It is difficult to prevent an electrical disaster using a existing cabinet panel because electrical events are invisible and unforeseeable. So we construct a integrated information system with a Home-Smart Cabinet Panel(H-SCP) for management of low-voltage customers. The integrated information system with the H-SCP maintain the transmitted data from H-SCP, alert a electrical event to a administrator and show a state of customer health in real time respectively. A manager of electrical safety can prevent electrical disaster to maintain electrical facilities after analysis on the integrated information system.

• 한국가스학회:학술대회논문집
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• 한국가스학회 1998년도 추계학술발표회 논문집
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• pp.71-74
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• 1998

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.2052-2053
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• 2008

High voltage motors are the core equipment of electric generation facilities and need to guarantee stable operation. Therefore, keeping healthy state is of importance by means of insulation diagnosis periodically. However, if the diagnosis went through in the different circumstances such as temperature, humidity, and impedance applied to the test equipment, the trend analysis have no significance. This paper presents the experimental results supporting the importance of keeping the same conditions under insulation diagnosis.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.103_104
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• 2009

We have supervised the conditions of facilities of Hydro power plant using SCADA system. and we have operated the EMS after joined in Electricity Market. In this paper, I introduce EMS of K-WATER and afterwards, this paper will be able to help us to make a decision when we install or revise EMS.

• KEPCO Journal on Electric Power and Energy
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• 제7권2호
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• pp.263-268
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• 2021

This paper statistically analyzes the time required for each failure cause and describes a diagnostic method for 159 reports of failure analysis of MV cables that occurred in the distribution system of KEPCO over the past 18 years. In addition, the manufacturer's failure rate compared to 100C-km was calculated using 381 cases of MV cable deterioration failure between 2008 and 2020. It is hoped that this paper will help those in charge of maintaining underground facilities at the business office to use the failure rate to prioritize facility diagnosis.

• 환경영향평가
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• 제19권1호
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• pp.39-47
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• 2010

In order to examine the effect of impermeable surface (rooftop, outdoor parking lot) and rainwater infiltration facilities on runoff pH, pH was measured. pH measurement spots were splash blocks accepted roof runoff of 3 sites, infiltration boxes and trenches accepted parking lot runoff and plastic rainwater harvesting facility accepted roof runoff. These measurements were operated at 3 housing complexes from 2006 to 2009. The rainwater runoff pH was influenced by the quality of the runoff surface material (concrete), the age of the building, waterproofing methods according to each housing site, antecedent rainfall conditions and others. Rain garden, infiltration boxes and trenches decreased the alkalinity of runoff by detention and infiltrating the roof and outdoor parking lot runoff. These results mean that decentralized rainwater management facilities of housing complexes can reduce effect on the outskirt aquatic ecosystem by the accumulation of substances causing pH rising in the infiltration facilities and rain garden.

• 한국안전학회지
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• 제23권2호
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• pp.37-44
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• 2008

The safety assessment for facility industry is now being periodically performed. For the purpose of scientific safety management, QRA(Quantitative Risk Assessment) is also being performed, and reliability data of the facilities is essential to perform the assessment. Generally, the existing safety assessment is performed by using the values announced in other industry processes, which result in the drop of reliability. In order to solve this problem, there is an urgent need to establish reliability database for the facilities. The most appropriate method is to perform a direct reliability analysis towards the facilities undergoing safety assessment. In this study, in compliance with the assessment method and procedure of OREDA-2002 handbook, the facility reliability data are collected, which include the calendar time and operational time in terms of different facility items, the number of failures in terms of different failure mode, the mean, standard deviation, lower limit and upper limit of failure rate, and the failure rate. And the data process method for this special occasion is also proposed when the number of failure is 0.

• 농업과학연구
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• 제50권4호
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• pp.785-798
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• 2023

Considering irrigation facilities are currently insufficient and drought vulnerability due to climate change is high, efficient measures are required to secure water supply for field crops. This study, therefore, calculated the water shortage to secure water for representative field crops. An economic analysis was further conducted by comparing the production income to the input cost for each method. Here, five distinct regions were selected to represent each crop-Cheongyang-gun for chili peppers, Yesan-gun for apples, Dangjin-si for cabbages, Seosan-si for garlic, and Goesan for beans. The regions with insufficient water supply were estimated by calculating the water requirements and the supplied water from public groundwater wells for each area. A comprehensive set of four scenarios was presented as a strategy to ensure water security and manage irrigation facilities. These scenarios comprised the maintenance of existing groundwater wells, the construction of new water storage tanks, the installation of additional groundwater wells, and the utilization of surface water. B/C (benefit/cost) analysis was conducted for each scenario. As a result, the construction of water storage tanks was selected as a facility and water management plan in Cheongyang-gun, Dangjin-si, and Seosan-si. The analysis additionally indicated the economic viability of installing surface water utilization facilities in Yesan-gun and developing water storage tanks and groundwater (aquifer) wells in Goesan-gun. The results of this study are considered to serve as foundation data that may be utilized in the selection of water management plans for drought-prone areas in the future.