기관구역 시뮬레이터 개발을 위한 기초연구

정병건 한국마린엔지니어링학회 2003 한국마린엔지니어링학회지 Vol.27 No.1

This paper describes the development of a pc-based machinery space simulator for training and research, relevant to STCW-95. The detailed mathematical modelling process for the actual machinery is discussed and a method to perform effective education and training for the simulator is suggested. The method includes scenario, procedure, exercise and evaluation. The procedure guides the trainee through a sequence of steps designed to meet a specific goal, showing the trainee what must be done and explaining why The exercise enhances understanding for efficient engine management and enable user to perform research for the machinery. The evaluation shows exercise results and feeds back to instructor how to guide the under-performed trainee.

산적액체위험물 하역 운영의 안전규제에 관한 입법론적 연구

정병건,김진권 한국해사법학회 2020 해사법연구 Vol.32 No.3

산적액체위험물의 하역 운영의 안전규제와 관련하여 지속적으로 발생하고 있는 사고로 인하여 산적액체위험물 취급과 관련한 안전성 확보가 필요한 시점이다. 특히 원유운반선 우이산호 부두접촉사고, 2015년 중국 텐진항 폭발사고 및 2019년 울산 스톨트 그로앤랜드호 폭발사고로 인하여 안전관리체계에 대한 재검토의 필요성이 제기되었다. 그 가운데 중국 텐진항 폭발사고와 울산 스톨 트 그로앤랜드호 폭발사고는 주변에 미치는 영향까지 고려하게 되는 계기가 되었다. 우리나라의 경우 액체위험물은 개별업체에서 제조되어 도로 또는 철도를 통 하여 항만의 위험물 보관업체의 위험물 취급 저장시설로 이동되어 보관되었다가 선박을 통해 수출이 이루어지고 있으며, 액체위험물의 수입도 동일한 경로를 통하여 반대의 순서로 이루어지고 있다. 그런데 액체위험물의 하역 운영에 대한 사항은 선박입출항법상 자체안전관리계획제도에 의존하고 있지만, 폭발사고 등으로 사고가 지속적으로 발생하고 있는 상황에서 과연 효과적으로 안전을 확보하고 있는지 의문이다. 이 연구의 목적은 산적액체위험물 하역 운영에 관한 현황 및 문제점을 파악 하고 우선적으로 관련 법령의 개정안을 도출함을 목적으로 하고 있다. 즉, 현재 선박입출항법에 따른 자체안전관리계획제도 보다 강화된 제도의 도입 필요성이 논의되고 있으므로, 그 논의의 기초단계로 현재의 문제점을 파악하고 개선 할 수 있는 입법론을 제시하고자 한다. It is time to ensure safety due to continuous accidents involving the loading and unloading of bulk liquid dangerous substances. Especially, VLCC Wuyishan Wharf contact accident in 2014, explosion accident in the Tianjin port on 2015, and Chemical Carrier Stolt Groenland Explosion Accident on 2019 led led to the request for a review of the safety management system. The impact of the explosion on the surrounding area has been considered. In Korea, liquid dangerous substances are manufactured by individual companies and moved to dangerous goods handling storage facilities of harbors through roads or railways, and then exported through ships, and the importation of acid liquid hazardous substances is also carried out in the opposite order through the same path. However, Matters concerning the operation of loading and unloading of liquid dangerous substances depend on the Internal Safety Management Plan under Act on the Arrival, Departure, ETC. of Ships, and it is questionable whether it is effectively securing safety. The purpose of this study is to identify the current status and problems of loading and unloading of acid liquid hazardous materials, and first of all, the purpose is to draw up amendments to the relevant statutes. In other words, since the need to introduce a system that is strengthened by the Internal Safety Management Plan under Act on the Arrival, Departure, ETC. of Ships is currently being discussed, the basic step of the discussion was to present a legislative theory that could identify and improve current problems.

$\mu$-설계법에 의한 저속 박용디젤기관의 속도제어기 설계

정병건,양주호,김창화 한국마린엔지니어링학회 1995 한국마린엔지니어링학회지 Vol.19 No.1

In the field of marine transportation the energy saving is one of the most important factors for profit. In order to reduce the fuel oil consumption the ship's propulsion efficiency must be increased as much as possible. The propulsion efficiency depends upon a combination of an engine and a propeller. The propeller has better efficiency as lower rotational speed. This situation led the engine manufacturers to design the engine that has lower speed, longer stroke and a small number of cylinders. Consequently the variation of rotational torque became larger than before because of the longer delay-time in the fuel oil injection process and an increased output per cylinder. As this new trends the conventional mechanical-hydrualic governors for engine speed control have been replaced by digital speed controllers which adopted the PID control or the optimal control algorithm. But these control algorithms have not enough robustness to suppress the variation of the delay-time and the parameter pertubation. In this paper we consider the delay-time and the perturbation of engine parameters as the modeling uncetainties. Next we design the controller which has zero offset in steady state engine speed, based on the two-degree-of-freedom control theory and $\mu$-synthesis. Thd validity of the controller is investigated through the response simulation. We use a personal computer and an analog computer as the digital controller and the engine (plant) part respectively. And, we certify that the designed controller maintains its performance even though the engine parameters may vary.

μ-설계법에 의한 저속 박용디젤기관의 속도제어기 설계

정병건 부산수산대학교 산업기술연구소 1995 産業技術硏究所 硏究報告 Vol.6 No.1

선박용 중속 디젤 기관의 로바스트 속도제어기 개발

정병건,양주호,김창화 한국마린엔지니어링학회 1996 한국마린엔지니어링학회지 Vol.20 No.4

The ship's propulsion efficiency depends upon a combibation of engine and propeller. The propeller has better efficiency as the engine has lower rotational speed. This situation led the engine manufacures to design the engine that has lower speed, longer stroke and a small number of cylinders. With this new trends the conventional mechanical-hydrualic governors for engine speed control have been replaced by digital speed controllers which adopted the PID control or the optimal control algorithm. But these control algorithms have not enough robustness to suppress the variations of the delay-time and the parameter perturbation especially in low speed engine. In this study we consider the perturbations of the engine parameters as the modeling uncetainties and design a robust speed controller for marine medium speed diesel engine by means of $ extit{H}_{infty}$control theory having the central solution. By comparing the results of the robust speed controller with those of mechanical governor and PID controller, the validity of the robust speed controller under parameter variations is confirmed. The speed control of the experimental diesel engine of carried out using actuator which is composed of PWM signal generator and D.C servo motor.

액체위험물 공용부두의 안전관리 규정에 대한 개선방안 연구

정병건(Pyong-Gon Chong),김진권(Jin-Kwon Kim) 한국해사법학회 2017 해사법연구 Vol.29 No.3

액체위험물 취급 부두에 대한 국민적인 관심이 대두된 것은 “원유운반선 우이산호 부두접촉사고”로 기인하였다고 해도 과언이 아니다. 2014년 1월 31일 여수 GS-Caltex 원유부두로 진입하던 싱가포르 국적 초대형 유조선(VLCC) “우이 산호(WU YI SAN)”가 원유부두와 원유이송 송유관과 충돌하여 송유관 내부에있던 유류가 해상으로 유출된 사고이다. 또한 2015년 6월 12일 중국 텐진항에서루이하이 물류회사 위험물 창고에 적재된 질산섬유에서 발화한 불이 질산암모 늄 등 화학물에 옮겨 붙어 대규모 폭발을 일으킨 텐진항 폭발사고도 있다. 이사고로 중국 공안 및 검찰은 관련자 49명을 형사입건하고 장관급 공직자 5명을포함한 74명에 대해 징계 처분을 건의했다. 텐진항 폭발사고의 발생이 비단 중국에만 한정된 사항은 아니다. 우리나라의경우도 액체위험물(화학물질)의 수출은 제조공장에서 완성되어 도로 또는 철도를 통해 위험물 취급 저장시설이 있는 인근 항만의 위험물 보관업체에 이동·보 관되었다가 선박을 통해 이루어지고 있다. 액체위험물의 수입도 수출의 역순으로 행해진다. 그런데 위험물에 대한 정의가 개별법 마다 다르게 규정되어 있어위험물 안전관리의 허점이 발생되는 것이다. 즉, 선박안전법, 위험물안전관리법,철도안전법, 교통안전법, 화학물질관리안전법, 산업안전보건법 등의 각 개별법의 위험물 정의 및 적용이 상이하다. 이 연구의 목적은 액체위험물의 안전관리 규정에 대한 문제점을 파악하고개선방안을 제시하는 것이다. 특히 액체위험물 공용부두의 개념과 운영에 관해항만법, 항만운송사업법 및 선박의 입항과 출항 등에 관한 법률의 비교분석을 통해 자체안전관리계획서상의 작성주체를 명확히 하고, 공용부두의 안전관리방안을 제시하였다. It is no exaggeration to say that the public interest in the liquid dangerous substances handling Wharf was raised by the Very large crude oil carrier Wuyishan Wharf contact accident . January 31, 2014. the Singapore flagged VLCC WU YI SAN , which entered the crude oil pier at Yeosu GS-Caltex, collided with crude oil pumping and crude oil transfer pipelines, causing the oil in the pipeline to leak into the sea Also, on June 12, 2015, there was an explosion in the Tianjin port, where fire from the nitric acid fiber loaded in the dangerous goods warehouse of the Louis High Logistics Company in Tianjin Port. China, was transferred to chemicals such as ammonium nitrate, causing a massive explosion. In the accident, the Chinese police and prosecutors filed criminal charges against 49 people involved and proposed disciplinary action against 74 people including five ministerial-level officials. The explosion accident of the Tianjin port is not limited to China only. In Korea, the export of dangerous liquid substances including chemical substances is completed at the manufacturing plant, and it is transported through the road or railway to the dangerous goods storage company in the nearby port where the dangerous liquid substances handling and storage facility is located and stored and then export them through ship. Imports of liquid dangerous goods are also carried out in the reverse order of export. However, since the definition of dangerous liquid substances is defined differently for each individual Act, there is a legal loophole in the safety management of dangerous goods handling. That is, the definition and application of in dangerous liquid substances each individual law such as the Ship Safety Act, Act on the Safety Control of Hazardous Substances, the Railway Safety Act, the Traffic Safety Act, the Chemicals Control Act, and the Occupational Safety and Health Act are different. The purpose of this study is to identify the problem of the Act of safety management plan of dangerous liquid cargo and to find improvement, and to compare the harbor Act, Harbour Transport Business Act and Act on the Arrival, Departure, ETC. of ships. I would like to suggest the clear definition of the main body of operation in the safety management plan in Act on the Arrival, Departure, ETC. and the ways to enhance the safety of handling of dangerous liquid cargo in public wharfs.

해상용 기관 시뮬레이터의 개발

정병건(Byung-gun Jung),소명옥(Myung-ok So),엄필용(Pil-yong Eum),백세훤(Se-hwon Paek),김창화(Chang-hwa Kim) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-

The development of a marine engine simulator system for training and research is described. Development objectives of the system are for both student training and research and development work. The system includes a distributed server/client architecture for I to I or I to many client simulation operation through OPC server, complete separation of visual elements from the controlling routines and the ability to work on the mathematical model independent of the controller and visual systems. A graphical user interface for the man-machine interface has been developed and the mathematical model has been updated. Various engine operational situations can be simulated. The use of MESS for training of sea going engineers and its competency for STCW-95 is discussed.

위험물 취급 시설물에 대한 자체안전관리계획서 승인제도의 문제점과 개선방안

정병건,김진권 한국해사법학회 2015 해사법연구 Vol.27 No.2

해양에서의 안전확보는 아무리 강조해도 지나치지 않다. 요즘 국내의 관심을 집중시켰던 해양사고중의 하나는 세월호 사고와 더불어 우이산호 사고이다. 이 사고는 2014년 1월 31일 여수 GS-Caltex 원유부두로 진입하던 싱가포르 국적 초대형 유조선(VLCC) “우이산호(WU YI SAN)”가 원유부두와 원유이송 송유관과 충돌하여 송유관 내부에 있던 유류가 해상으로 유출된 사고로서 1995년 여수해안에서 발생한 5천톤 가량의 유류유출사고가 발생한지 거의 20년만의 일이다. 울산항의 유출사고 사례는 2013년에 대형정유업체인 SK 에너지에서 운영하는 부유식 호스의 파손으로 인한 유출사고가 있었다. 이와 관련하여 현재 각 회사에서 운영중인 자체안전관리계획서 승인제도는 위험물 취급에 관한 최고경영자의 관심 결여 및 정부당국의 안전 관리 감독 소홀로 인하여 큰 역할을 못하고 있는 실정이다. 이에 이 논문에서는 현행 개항질서법상 규정되어 있는 위험물 취급 시설물에 대한 자체안전관리계획서 승인제도의 문제점을 파악하고 이에 대한 개선방안을 도출하여 위험물 취급 시설물에 기인한 사고방지, 환경보호 및 안전 확보에 기여하고자 한다. The importance of safety in ocean cannot be emphasized enough. The one of hot issued safety accidents in our society is WUISAN, a Singapore-registered Oil Tanker, collided with GS-Caltex Crude Oil Dolphin and pipelines caused spillage at a quay off Yusu in 2014, happened almost 20 years after some 5,000 tons of oil washed onto the same coast in 1995. In case of Ulsan port, a small amount of oil leaked off the coast of Ulsan from a cracked floating hose run by Korea’s major refiner, SK Energy in 2013. Today, Approval System for Internal Safety Control in company is not core value of dangerous cargo handling berths because of lacks of willings of owners managing it safely in dangerous cargo operation industry and safety monitoring processing system operating by Authorities. Therefore, we study the problems and improvements of the Approval System for Internal Safety Control Plan in dangerous cargo handling facilities to keep pace with safety policy in Public Order in Open Ports Act.

AR모델에 의한 洪水流出量 豫測에 관한 硏究

鄭炳健,鄭鎰光,李三魯 여수대학교 1992 論文集 Vol.6 No.-

This study shows the comparison between the observations and the AR model on the flood runoff the the Young San River basin. On the ascending curve in hydrograph, AR model hae the same tendency as the observation. However the peak part and the descending curve demonstrate a rather difference. As the results of comparsion correlogram with statistical characteristic of observation, AR model is judged suitable model in prediction by on-line method.

대형 저속 디젤기관의 속도제어를 위한 로바스트 서보 제어기 설계

정병건 ( Byung Gun Jung ),양주호 ( Joo Ho Yang ),변정환 ( Jung Hoan Byun ) 한국어업기술학회 1997 수산해양기술연구 Vol.33 No.1