• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2004.07a
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• pp.507-510
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• 2004

염해지역 배전선로의 나선 사용에 따른 안전사고방지 및 전력공급신뢰도 향상을 위하여 경동선 도체에 수밀 컴파운드를 충진하고 흑색의 가교폴리에틸렌으로 압출한 절연전선으로 염해지역의 특별고압 가공전선로에 사용하며 내부식성, 수밀성 및 전기 특성이 우수하다. 따라서 본 평가기술에서는 내트래킹, 인장강도, 우수침입방지성, 침적성, 통전내부식성, 교류파괴전압, 박리성, 밀착도 등의 주요한 시험에 대한 시험방법을 검토하고, 시험에 적용하여 시험 시 문제점을 도출하고 시험방법을 정립하고자 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.259-260
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• 2016

본 논문에서는 전력선의 부식에 따른 물성 변화에 대한 확인 및 검증을 위한 연구를 수행하였다. 산업단지 및 염해지역에 설치되어진 송전선로에 사용되고 있는 강심알루미늄연선(Aluminum Conductors Steel Reinforced, ACSR)은 타 지역에 비하여 스페이서, 슬리브 등의 접속부에서의 부식 정도가 상당히 빠르게 진행된다. 따라서 현재와 같은 내용연한을 획일적으로 적용할 수 없으므로 설치된 선로의 주위 환경 및 사용되는 부하의 조건 등이 반영된 합리적인 송전선로 운용이 필요하다.

• JOURNAL OF ELECTRICAL WORLD
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• no.7 s.127
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• pp.52-57
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• 1987

• Journal of Korea Water Resources Association
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• v.37 no.2
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• pp.97-108
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• 2004

Recently the ground-water development using the ground-water dam was proposed for the efficient use of the limited water resources especially for islands or seaside area. But in operating the ground-water dam adjacent to seaside an excessive pumping causes the sea-water intrusion which is caused by the drawdown of ground-water level. In this study, the effect of the recharging well method to reduce the sea-water intrusion was evaluated, and was applied to the downstream of the Ssangcheon ground-water dam site. The SUTRA model was used to simulate the salinity transport in the unsaturated and saturated zone. As the results, the effect of recharging method on the downstream of the ground-water dam was proven to be very efficient to reduce the salinity in the pumping well, and especially the best result was shown at the case that the recharging well is located at 40∼60m from the cutoff wall and the recharging rate is up to 6∼7％.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.4
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• pp.149-155
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• 2010

This paper was carried out to estimate pollution levels of various insulators in tunnel and establish cleaning period in each tunnel section. We estimate pollution level that is attached to insulators in environmental pollution area, industrial area, salt damage area. These results that the pollution quantity and conductivity were increased by pollution accumulation period. However, the conductivity showed each other big difference in each tunnel. In particular, the conductivity showed big in environmental pollution(tunnel A) and salt damage(tunnel C) area, It is considered to prevent accident that manage establishing periodic state of cleaning plan. Also, the Grease that spread on the insulator surface in existing is considered that it can prevent accident for long-term by restrain use.

• Journal of the Korea institute for structural maintenance and inspection
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• v.17 no.6
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• pp.95-103
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• 2013

Half Cell Potential (HPC) technique has been widely adopted for its quantitative evaluation of corrosion possibility. In this study, RC specimens with three different cover depths (10mm, 30mm, and 60mm) and w/c ratios (0.35, 0.55, and 0.70) are prepared and accelerated salt spray test (SST) is performed for 45 days. Steel corrosion occurs in the specimens with 0.55 of w/c and 10mm of cover depth. In the case of 0.70 of w/c and 30mm of cover depth, steel corrosion is also monitored. Considering the effect of cover depth and w/c ratio, HCP evaluation equation is proposed and the condition which can control steel corrosion is obtained. Furthermore, anti-corrosive conditions containing w/c ratio and cover depth are analyzed through Life 365 program and the conditions are compared with the results from this study.

• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.2
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• pp.172-179
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• 2016

For an evaluation of service life in RC(Reinforced Concrete) structures, deterministic method and probabilistic method considering random variables of design parameters are usually adopted. In the work, surface chloride contents which vary with distance from sea shore and height are investigated from the previous research literature surveys, and they are considered for service life estimation. Through the analysis, the probabilistic method shows much lower results, which is due to variations of design parameters and very low intended durability failure. In the deterministic method, the structures within 250m and higher than 60m are evaluated to be free from chloride attack. In the probabilistic method, those higher than 60m in all the region and higher than 40m and 250m from sea shore are evaluated to satisfy the service life.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.285-287
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• 2012

염해는 철근 콘크리트 구조물의 주요 열화원인으로서 특히 수해양 부유식 건축물의 상부구조는 비래염분에 의한 피해에 노출되어 있고, 해수에 접하고 있는 함체는 다공질 콘크리트의 모세관으로 염수이온이 침투하므로 상당히 높은 수위의 열화 환경에 노출되어 있다고 분류할 수 있다. 본 연구는 해양에서 유입되는 비래염분량을 정량화하여 철근 콘크리트 구조물 뿐만아니라 강재 건자재의 장수명화를 꾀하는 기초자료를 구축하고자 하였다. 1년간에 걸쳐 측정된 비래염분유입 지역은 기존연구에서 조사된 1km 범위을 상당히 초과하고 있으며 그 량도 강재 발청농도를 탁월하게 상회하는 것으로 분석되었다.

• Journal of the Korea Concrete Institute
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• v.22 no.6
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• pp.769-776
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• 2010

Concrete structures immersed in seawater are exposed to uniform chloride concentration. However, seashore concrete structures are subjected to various airborne chlorides concentration depending on areas, distance from seashore, orientation of structures and wind direction etc. Therefore, structures which is not coming into direct contact with seawater are greatly affected by salt attack and those cases have been reported. This study intends to investigate salt attack by airborne chlorides in terms of the distance from the seashore based on the measurements conducted at 73 spots and 27 areas during 3 years in the Eastern, Western and Southern coasts of South Korea. Results revealed large regional variations of the salinity in coastal regions along with significant seasonal effects caused by seasonal winds. Moreover, the salinity is seen to diminish as the distance from the seashore increases at a rate corresponding to the function $y=ax^{-b}$. These results will be helpful to do the durability design and management of seashore structures.

• Proceedings of the KIEE Conference
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• 2002.11b
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• pp.38-40
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• 2002

한국전력에서는 전력설비의 염진해 대책을 위해 전국의 영진해 오손정도를 파악하기 위하여 동, 서, 남해안 및 제주도를 중심으로 1981-1988간에 걸쳐 애자를 설치하고 매월 실측하여 전국의 염진해 오손지도를 만들고 이에 의해 내오손 설계를 하는 실정이다. 그러나 이 이후 여러 기현상의 자연현상과 중국대륙의 극심한 황사현상 빛 가속화된 산업발전에의 공업오손의 영향 등으로 오손도에 적잖게 변화를 준 것으로 보고 본 논문에서는 서남권의 오손도를 직독계를 이용하여 측정하고 이를 분석하여 그 추이를 제시하였다.