• 정보통신설비학회논문지
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• 제9권1호
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• pp.19-23
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• 2010

The Electromagnetic Interference could occur due to power line on the telecommunication service. The Countermeasure is practised by legal law. Various affecting factors are described in the law. In this paper, an effect by pipeline especially in the ground, power feeding plant, and curved railway sector is analyzed as environmental factors which are not included in the law. By the practical measurement, it appears that the measured voltages on the spots with underground pipeline are grouped into lower voltage level, induced voltage tends to be high near power feeding plant, and also in the curved railway line. These analytical results can be meaningly considered in the application of countermeasure.

• 대한토목학회논문집
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• 제34권1호
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• pp.273-283
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• 2014

BIM 기술의 하나인 COBie 포맷의 출현으로 설계와 시공단계에서 발생한 정보가 운영단계로 자동 전송이 가능해지면서 BIM을 중심으로 하는 유지관리시스템 개발 프로세스가 건축물을 중심으로 실험되고 있다. 하지만 BIM 시장 확대가 예상되는 현재 시점에서 건축물을 포함한 토목시설과 산업시설에서의 COBie 활용성에 대한 검토가 선행되어야 할 필요가 있다. 본 연구는 "공공하수도시설 운영 관리 업무지침"과 현재 운영중인 하수처리시설을 대상으로 진행하였고 후자는 업무지침의 결과를 검증하고 보충하는데 의의가 있다. 본 연구에서 도출된 결론은 세 가지로 요약된다. (1) 자산 모델링 방법인 COBie는 시운전 정보를 포함하기에는 충분하지 않으며, (2) 하수처리시설 모델링에 필요한 IFC 개발과 패밀리 구축이 반드시 필요하다. 그리고 (3) 현재의 운영관리시스템에 적합하게 설계된 COBie 모델은 산업시설분야의 COBie 포맷 타당성을 높여 줄 것이다. 본 연구 결과는 산업시설에서의 COBie 적용을 위한 기초 자료로 이용될 것으로 기대된다.

• 한국해양공학회지
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• 제32권4호
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• pp.279-286
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• 2018

The use of eco-friendly energy in the offshore plant system is expanding because conventional generators are operated by fossil fuel or natural gas. Eco-friendly energy, which replaces existing power generation methods, should be capable of generating the power for lighting protection equipment, airborne fault indication, parameter measurement, and others. Most of the eco-friendly energy used in offshore plant facilities is solar and wind power. In the case of using photovoltaic power, because the structure must be constructed based as flat solar panels, it can be damaged easily by the wind. Therefore, there is a need for a new generation system composed of a spherical structure that does not require a separate structure and is less influenced by the wind. Considering these characteristics, in this study we designed, fabricated, and tested a unit that could provide the most efficient spherical photovoltaic power generation considering wind direction and wind pressure. Our test results indicated that the proposed system reduced costs because it did not require any separate structure, used eco-friendly energy, reduced carbon dioxide emissions, and expanded the proportion of eco-friendly energy use by offshore plant facilities.

• 한국습지학회지
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• 제23권1호
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• pp.35-43
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• 2021

도시지역의 강우유출수를 관리하기 위하여 자연기반해법의 LID 및 그린인프라 적용이 늘고 있다. 식물이 LID 시설에 적용되는 이유는 광합성을 이용하여 오염물질 저감효율을 높이고, 시설 내부 오염물질 축적을 줄여 유지관리 기능을 향상시키기 위해서이다. 그러나 LID 시설 내부에서 작용하는 식물의 오염물질 흡입능력의 불확실성으로 인하여 식재 선정시 어려움이 많다. 따라서 본 연구는 도로변, LID 시설 및 조경공간에 식재되어있는 식물의 건물률 및 영양물질 함량을 비교하여 오염물질 제거기작을 분석하기 위해 수행되었다. 실험대상인 7종의 초본류, 관목류 및 교목류의 월별 건물률은 60~90% 범위를 보였다. 초본류 몸체 내 TN 함량은 여름철까지 지속적으로 성장하다가 감소하는 추세를 보였다. 그러나 관목류와 교목류는 초봄과 늦여름에 높은 TN 함량을 보였다. 패랭이를 제외한 LID 시설에 식재된 모든 식물에서 높은 TP 함량을 보였다. 이는 LID의 식물이 인 제거에 효율적이라는 것을 의미한다. 식물별 영양염류 함량은 유입수 농도에 영향을 끼치는 도시환경에 크게 의존하는 것으로 나타났다. 따라서 이러한 결과들은 향후 LID 적용 시 식생 선정에 있어 유용한 자료로 활용 가능할 것으로 판단된다.

• International journal of advanced smart convergence
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• 제7권1호
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• pp.1-6
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• 2018

In addition to the instability of energy import costs caused by the depletion of petroleum resources, which is a representative energy resource, and the strengthening of various regulations such as the convention on climate change, the plant for bio energy production, which is being watched as the next generation energy, and became subject of various complaints. In order to solve this problem, the bio-plant is underground and the ground is parked, making the convenience and accessibility of citizens more and more accessible. In this situation, the development of bioenergy production technology also increases the risk factor in bioenergy production process. Accordingly this paper explains method about apply the wide angle camera based AOA algorithm to the bio plant to prevent the accidents from spreading due to the lack of facilities and safety devices and the aging of the facilities and suggests a technique that can quickly identify the location and direction when it occurs.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2018년도 공동국제학술발표회
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• pp.89-90
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• 2018

• 디지털산업정보학회논문지
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• 제16권1호
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• pp.99-109
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• 2020

In the past, conservative concepts have been applied in terms of the characteristic of nuclear power plants(NPPs), resulting in analog-based equipment and closed networks. However, as digital technology has recently been applied to the design, digital-based facilities and communication networks have been used in nuclear power plants, increasing the risk of cybersecurity than using analog-based facilities. Nuclear power plant facilities are divided into a safety system and a non-safety system. It is essential to identify the difference and cope with cybersecurity threats to the safety system according to its characteristics. In this paper, we examine the cybersecurity regulatory guidelines for safety systems in nuclear power plant facilities. Also, we analyze cybersecurity threats to a programmable logic controller of the safety system and suggest cybersecurity requirements be applied to it to respond to the threats. By implementing security functions suitable for the programmable logic controller according to the suggested cybersecurity requirements, regulatory guidelines can be satisfied, and security functions can be extended according to other system requirements. Also, it can effectively cope with cybersecurity attacks that may occur during the operation of nuclear power plants.

• 조명전기설비학회논문지
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• 제21권6호
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• pp.102-108
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• 2007

원유가의 급등과 더불어 에너지자원에 대한 관심이 크게 증가 되었는데, 다양한 에너지관련 분야 중에서 먼저 선행되어야 하는 것은 기존의 설비에서 사용하고 있는 에너지가 효과적으로 사용되고 있는가를 판단하는 것이며, 이를 에너지 효율의 산정이라고 한다. 따라서 본 논문에서는 에너지의 주요 수요처중 하나인 제지 생산 플랜트의 한 공정에서 전력에너지와 열에너지에 대한 에너지효율을 계산하였다. 이때 전력에너지는 운전 중인 전동기의 부하에 따른 효율을 중심으로, 열에너지는 공정에서 입출력되는 열량을 중심으로 계산하였다. 즉 운전 중인 생산설비의 한 공정의 전력과 열에너지에 대해 각각 에너지효율을 산정하였으며 일부 에너지절감에 대한 방안도 제시하였다.

• 방사선산업학회지
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• 제18권3호
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• pp.255-266
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• 2024

The uranium nuclear fuel used in nuclear power generation needs to be replaced with new fuel after a certain period. In South Korea, the spent nuclear fuel generated during this process is temporarily stored within the nuclear power plant site, and there are ongoing issues with the saturation of storage capacity. To address these problems, the South Korea government has established a plan to manage high-level radioactive waste, including provisions for securing interim storage facilities. An interim storage facility is designed to safely store spent nuclear fuel for certain period before its permanent disposal. This study analyzed leading international cases of interim storage facilities that are technically feasible and can reduce the operating period of temporary storage facilities for spent nuclear fuel within nuclear power plant sites. It also presented the technical concepts required for the operation of interim storage facilities for spent fuel from PWR(Pressurized Water Reactor), reflecting the situation in South Korea.

• 한국CDE학회논문집
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• 제20권4호
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• pp.401-411
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• 2015

Cybrid virtual plant concept is defined as a cyber plant mimicking a physical plant by using plant engineering data and sensor data coming from sensors attached to facilities of the physical plant. Cybrid virtual plant is a new concept for plant industry so that plant managers and operators' requirements need to be captured for systematic application of the concept to the plant industry. The paper proposed an architecture of the cybrid virtual plant, and provided requirement analysis results for a specific plant company. A database, named smart-cube repository, for the proposed cybrid virtual plant is also proposed and its conceptual data structure is described.