• Journal of Korea Ship Safrty Technology Authority
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• s.33
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• pp.87-97
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• 2012

• Construction Engineering and Management
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• v.20 no.1
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• pp.16-21
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• 2019

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.10
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• pp.1079-1086
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• 2015

This paper introduces the architecture of OUTPUT module that is suitable using in safety related system having SIL4 and proposes the quantitative target that is required for OUTPUT module. Especially, only output type that is made up Relay output signal and analog signal among various output ways is applied in output module that is a part of safety related system. The FMEA(Failure Modes and Effect Analysis), FTA(Fault Tree Analysis) are used as analysis method. As a result, it proposes to the architecture and failure frequency of the Output module that is used in SIL4 safety related system.

• Journal of Navigation and Port Research
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• v.27 no.5
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• pp.479-486
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• 2003

The concept of “Environmental Stress(ES)” can be used as a useful index when assessing the maritime traffic safety. It is composed of two parts, one due to geographical restriction and another one due to traffic congestion. In this paper, Environmental Stress due to geographical restriction is reviewed Its characteristics are surveyed from the sample calculation results for some hypothetical cases, such as approaching a breakwater, navigating in a long straight channel, and in a long bended channel. Sample calculations are also carried out for the approach channels in Busan and Kwangyang harbor. By using this ES concept, it is expected that objective ana quantitative assessment of safety is possible for various environmental conditions when navigating in a harbor or in a fairway.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.19 no.4
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• pp.336-344
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• 2007

A method is developed to evaluate partial safety factors for armor units, by which uncertainties of random variables in reliability function as well as wave height distribution with service periods could take into account straightforwardly. It is found that partial safety factors for resistance and wave height are correctly increased with improving target levels on failure of coastal structures at the same return and service periods. Therefore, it nay be possible to determine design variables through the same processes as those of deterministic method by using the partial safety factors for resistance and wave height evaluated in this paper, since uncertainties of random variables and the effects of service periods and target probability failure are directly considered in the processes of evaluation of partial safety factors.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2003.05a
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• pp.198-205
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• 2003

The concept “Environmental Stress(ES)” can be used as a useful index when assessing the maritime traffic safety. It is composed of two parts, one due to geographical restriction and another one due to traffic congestion. In this paper, Environmental Stress due to geographical restriction is reviewed. Its characteristics are surveyed from the sample calculation results for some hypothetical cases, such as approaching a breakwater, navigating in a long straight channel, and in a long bended channel. Sample calculations are also carried out for the approach channels in Busan and Kwangyang harbor. By using this ES concept. it is expected that objective and quantitative assessment of safety is possible for various environmental conditions when navigating in a harbor or in a fairway.

• Journal of the Korean Society of Safety
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• v.10 no.1
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• pp.74-83
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• 1995

발파작업에서 적합한 폭약의 선택과 적정 장약량 산출은 매우 중요하다. 특히 적정 장약량 산출은 발파안전 및 경제성 측면에서 매우 중요한 요소이므로 다음과 같은 사항을 충분히 고려하여 설계 및 시공할 것을 권장한다.(중략)

• Electric Engineers Magazine
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• v.203 no.7
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• pp.40-46
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• 1999

최근 전기설비는 자동화, 안전화되고 또한 인간에게 쾌적하고 편리한 시설을 지공하며 계획단계부터 설계, 시공을 거쳐 실현된 당초 성능이나 기능을 지속적으로 유지하고 안전을 보장하는 모든관리를 전기설비의 안전관리라 할 수 있다.

• 건설안전세미나
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• s.5
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• pp.3-95
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• 1994

• Journal of Korea Ship Safrty Technology Authority
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• v.17
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• pp.60-71
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• 2005