• The Journal of the Korea Contents Association
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• v.10 no.11
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• pp.341-351
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• 2010

Alarm system is very important for the safety of nuclear power plant. When alarm, operator refers alarm logic diagrams to identify the logical relationship between the alarm and its causes. This paper propose a system which tracks the logical path between alarm and its causes on the alarm logic diagrams of Wolsung nuclear power plant unit 3 & 4. And a grammar for the validation of logic diagrams expressed in 2 dimensional strings, and logical operations with 3 states to track alarm-cause paths and to display the state of logics are proposed. This system is on operation at Wolsung site.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05a
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• pp.265-268
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• 2003

원자력 발전소 운전시 이상 현상으로 인한 발전소의 정지 등 기타 여러 사고시 그 원인을 신속히 파악하여 조치하는 잎은 발전소의 안전과 효율적인 측면에서 매우 중요한 부분이다. 경보원인추적시스템(ACTS: Alarm-Cause Tracking System)은 발전소 현장에서 자주 사용하는 경보 논리도면을 자동화하여, 경보의 원인을 보다 상세하게 추적하여 경보절차서에 표시되는 원인들 중 실제로 발생한 원인과 그에 해당하는 절차 부분을 강조하여 표시함으로써 운전원이 쉽게 상세원인을 파악할 수 있도록 한다. 또한 이 시스템은 운전원이 경보의 발생경로와 논리상태를 그래픽으로 전산화된 논리도면상에서 확인하여 경보에 대한 빠른 조치를 취할 수 있도록 인터페이스를 제공한다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.5B
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• pp.479-486
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• 2010

Reliable hydrologic data acquisition is the basic and essential requirement for efficient water management. Especially the acquisition of various stream data in a certain location is very important to construct on alarm system to response an urban flood which occurs frequently due to the effect of climate change. Although the frequency of stream inundation flood occurrence becomes low owing to the consistent stream improvement, the urban flood due to the drainage system problems such as deterioration and bad management occurs continuously. The consistent management and current status understanding of the urban drainage system is essential to reduce the urban flood. The purpose of this study is to develop the urban runoff network flow velocity monitoring system which has the capability of collecting stream data whenever, wherever and to whomever without expert knowledge using Code Division Multiple Access technique and Bluetooth near-distance wireless communication technique. The urban runoff network flow velocity monitoring system consists of three stages. In the first stage, the stream information obtained by using ubiquitous floater is transferred to the server computer. In the second stage, the current state of the urban drainage system is assessed through the server computer. In the last stage, the information is provided to the user through a GUI. As a result of applying, the developed urban runoff network flow velocity monitoring system to Woncheon-Stream in Suwon, the information necessary for urban drainage management can be managed in real time.