• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.56-57
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• 2013

This paper is mainly concerned with the interaction effects between two vessels and sidewall with a mound. Experimental study on hydrodynamic forces between ship and sidewall with a mound was already shown in the previous paper, measured by varying the distances between ship and sidewall. The ship maneuvering simulation was conducted to find out the minimum safe distance between vessels, which is needed to avoid sea accident in confined waters.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.119-121
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• 2013

최근 대규모 선박 및 해양플랜트 사고 발생을 계기로 각국의 정부와 관련 업계에서는 안전사고 예방을 위한 규제를 강화하고 기업차원의 안전관리도 철저히 점검하고 있다. 선박사고의 경우에는 1989년 "엑슨발데스호" 사고를 계기로 국제해사기구(IMO) 주도하에 유조선의 "2중 선체 의무화"를 추진했으며, 2012년에는 전 세계적으로 공식 시행되고 있다. 해양플랜트 사고의 경우에는 1988년 북해(North Sea)에서 발생한 Piper Alpha 폭발사고를 계기로 인적요인에 대한 관심이 높아졌으며, 2010년 멕시코만에서 발생한 "딥워터호라이즌호" 사고 이후 시추작업에 대한 안전점검과 인적오류 예방 및 관리를 위한 훈련을 강화하고 있다(배영일, 2012). 일반적으로 해양플랜트 사고의 원인은 구조물 자체의 오류가 20%이하이며, 예기치 못한 작업자의 행동으로 발생된 사고가 80% 이상을 차지하고 있다. 즉, 대부분의 사고는 operation 또는 maintenance 동안 발생하는 것으로 나타나고 있다. 본 발표에서는 해양플랜트 산업에서의 사고와 관련된 최근 연구현황 및 향후 연구 방향을 소개하고자 한다.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.81.1-81
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• 2002

$\textbullet$ This paper presents a study on the development of a walking robot for an armor-stone work of the breakwater construction. The armor-stone work is putting stones about 0.3 ∼ 2m3 on the surface of the breakwater to prevent it from waving. $\textbullet$ This work has been done manually, and its process plan is uncertain by effects of the weather, wave and tide of sea. Therefore the constructional cost is considered to be wasteful $\textbullet$ Working in underwater as well as on land for human workers causes the accident and caisson disease, so it is necessary to replace the process to be mechanized. $\textbullet$ The basic requirements of the robot for mechanizing are as follows : 1) To have a large...

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.1112-1117
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• 2010

The intelligent safety system for level crossing which employs information and communication technology has been developed in USA and Japan, etc. But, in Korea, the relevant research has not been performed. In this paper, we analyze the cause of railway level crossing accidents and the inherent problem of the existing safety equipments. Based on analyzed results, we design the intelligent safety system which prevent collision between a train and a vehicle. This system displays train approaching information in real-time at roadside warning devices, informs approaching train of the detected obstacle in crossing areas, and is interconnected with traffic signal to empty the crossing area before train comes. Especially, we present the video based obstacle detection algorithm and verify its performance with prototype H/W since the abrupt obstacles in crossing areas are the main cause of level crossing accidents. We identify that the presented scheme detects both pedestrian and vehicle with good performance. Currently, we demonstrate developed railway crossing intelligence system at one crossing of Young-dong-seon line of Korail with Sea Train cockpit.

• Journal of Navigation and Port Research
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• v.38 no.6
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• pp.561-565
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• 2014

This paper is mainly concerned with the interaction effects between two vessels and sidewall with a mound. Experimental study on hydrodynamic forces between ship and sidewall with a mound was already shown in the previous paper, measured by varying the distances between ship and sidewall. The ship maneuvering simulation was conducted to find out the minimum safe distance between vessels, which is needed to avoid sea accident in confined waters. From the inspection of this investigation, it indicates the following result. When and if one vessel passes the other vessel through the proximity of sidewall with a mound, the spacing between two vessels is needed for the velocity ratio of 1.2, compared to the case of 1.5. Also, for the case of ship-size estimation, the ship maneuvering motion is more affected by interaction effects for the overtaken small vessel, compared to the overtaking large vessel.

• Journal of Navigation and Port Research
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• v.33 no.2
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• pp.111-117
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• 2009

On May 12th, 2007 a merchant vessel of Golden Rose (South Korea) sank into near 38 mile from Yentai in China after the vessel collided with a container vessel of Jinsung (China), leaving all 16 sailors, including seven South Koreans, missing. According to the official report. The Chinese vessel, authorities, and South Korean government did not coordination q rescue and salvage for the sailors and vessel properly as follows: 1) The Chinese vessel left the scene without rescue and salvage of the sailors, 2) Chinese authorities failed to comply with law of the sea that required them to report the collision to South Korea immediately after confirming the accident, and 3) The South Korean government is also being criticized for its slow response to the incident since the government did not set up a response team until 21 hours after the incident. In order to reduce this number of sailor missing in future incidents, this research is studied regarding assembling conferences, assigning SRR in ASEAN+3, simplicity to enter other territory waters and cooperative training and education for the SAR.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2004.05a
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• pp.167-170
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• 2004

A high light lantern system using LEDs is composed of power supply, flash controller, and daylight controller and proper case considering work condition. The performance of developed LED lantern is better than that of the existing marine lantern using an incandescent electric lamp and that of foreign products(Vega LED lantern made in New Zealand, Tideland system made in America). The electric consumption of our products is 30% compared with that of existing marine lantern using an incandescent electric lamp, and the luminous Intensity of them is 200% to 400% compared with that of existing marine lantern and foreign LED lantern. In addition, our LED lantern system is easy to repairing something wrong and changing the LED module and other controllers on the sea when they are in accident.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.10a
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• pp.127-128
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• 2009

대형 유조선에서 기인된 1995년 Sea Prince호 및 2007년 Hebei Spirit호 사고 등 대다수의 재난적 유류유출사고는 많은 변수 중 "악천후"라는 기상적 어려움으로 초동방제활동 및 피해규모의 축소가 어려운 실정이다. 하지만, 정작 사고선박에서는 방제활동 주도기관의 개업이 있기 전까지 적극적인 방제활동이 이뤄지지 못하고 있는 실정이다. 사고선박에서 유출되는 유류의 확산범위 및 이동방향에 대한 정보는 추후에 예정된 방제활동에 있어서 가장 중요한 요소 중 하나이다. 이 중요한 정보의 획득을 위해 사고선박에서 설치가 가능하며, 이후 방제활동에 중요한 유출유의 확산 정보를 제공할 수 있는 유류확산 추적부이 (NOST-Buoy)의 개발연구가 필요하다.

• Proceedings of KOSOMES biannual meeting
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• 2008.05a
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• pp.105-114
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• 2008

Kwangyang Yeosu Port is consisted of narrow strait and inclosed harbor and also where is frequently occurred maritime pollution accidents at seas bemuse of a lot of sea traffics for major oil refining company including Yeocheon National Complex. In the paper, we suggest methods to quickly remove the pollutants at seas form maritime pollution accidents in kwangyang Yeosu Port and also protect environmental life and property.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.51 no.2
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• pp.188-194
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• 2015

The powered purse seine fishery is an important fishery accounting for 19.4% of adjacent water fishery production in Korea, and the commercial fishing is associated with high rate of fatal and non-fatal occupational injury. The hazard analysis for the fishermen's safety of offshore large powered purse seiner was conducted to serve as a basic data for improving the healthy and safe working environment of fishermen using fishermen's occupational accidents of the national federation of fisheries cooperatives (NFFC) in 2013 (n=583). As a result, the occupational accident occurrence rate of this fishery was 182.6‰ in all industries 30.9 times the rate of that. In addition, death and missing rate was found to have a very serious level management to 25.1‰ in all industries of death of 17.5 times. The accident occurred in 72.3 to 85.8% was happened at sea. The others, slipping and struck by object etc occurred more frequently in order in the frequency of accident occurrence pattern. However, the occurrence rate of death and missing did not match the frequency of accident pattern. In other words, slipping occurred frequently higher while death and missing risk was not high. And the contact with fishing gear and fall in the waters was low while death and missing risk was high. The results are expected to contribute for identification and assessment of safety hazard occurred in offshore large powered purse seiners.