• 한국산업융합학회 논문집
• /
• 제23권4_2호
• /
• pp.569-581
• /
• 2020

Since the dehydration packages of offshore plant deal directly with oil & gas, there is a great risk of fire and explosion during operation. Therefore, this study performed risk assessment through HAZard & OPerability (HAZOP) for solid desiccant dehydration package that can remove water component of natural gas in offshore floating liquefied natural gas (LNG) production facilities below 0.1 ppmv. The risk matrix was determined by dividing the likelihood and the severity into five levels separately by asset, life, environment and reputation. The piping & instrumentation diagram (P&ID) of the dehydration package was divided into 9 nodes. Total 22 deviations were assessed in consideration of the adsorption and desorption conversion cycle. A risk assessment based on deviations revealed 14 major hazards. Three representative types of hazards were open/close failure of the control valve, control failure of the heater, and abnormal operation of the regeneration gas cooler. Finally, we proposed the installation of additional safety devices to improve safety against these major hazards, such as safety instrumented functions, alarms, etc.

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 2005년도 봄학술 발표회 논문집(II)
• /
• pp.265-268
• /
• 2005

This paper discusses a strategy and status for development and operation of durability mock-up test facilities for offshore structures. The strategy is examplified and facilitated using an offshore transmission tower crossing the West sea and the Shihwha lake, which was designed and constructed 345kV T/L lines transmitting power from Yeong-Heung fossil power plant to Seoul metropolitan area. Various data for corrosion protection, aging, life-prediction of concrete and steel offshore structures can be obtained using the proposed mock-up test facility. Acquired data will be used for further research on durability, life-prediction, and retrofit of structures. It is important to maintain the safety of 345 kV Yeong-Heung transmission line crossing the Shihwha lake because the offshore structure is one of the critical electric facilities transmitting large power to the metropolitan area. Operation of the offshore transmission tower mock-up is expected to make a significant contribution to stable power supply.

• 수산해양교육연구
• /
• 제28권2호
• /
• pp.407-416
• /
• 2016

The offshore plant industry has basically functioned with a rigid teamwork culture and many operations are managed by ship's crew, shifts and affiliates together. The marine sector of offshore plant has much similarity with ship's environment. So a person who had experienced on board will have advantages to work for offshore industry. But in spite of all that, only a few korean seafarers are able to join in the offshore industry due to lack of information about the offshore environment. This study analyze the employee's wage structure, nature of employment contract, requirements of job qualifications. Therefore, this study will assist for seafarers to set up how to get their work and also suggest to develop relevant offshore training courses by researching the gap competency matrix.

• 한국항해항만학회지
• /
• 제38권2호
• /
• pp.163-170
• /
• 2014

국내 해양플랜트 산업은 Drill-ship 이나 FPSO(Floating Production Storage and Off-loading) 제작 분야에 집중되어 있다. 하지만 플랫폼에 장착되는 장비 중에는 국내 제품이 많지 않다. 그것은 국내에서 개발된 장비는 국내 플랫폼이 없어 검증하기가 힘들기 때문이다. 본 연구는 슬랙모델을 도입하여 고정 해상 플랫폼의 유지 보수 및 해체 분야의 OSI 분야에 우리나라가 접근할 수 있는 방법을 모색하였다. 첫 번째로, 고정식 연안 해양플랜트로 먼저 진출하여 우리나라의 기술 슬랙을 확보하는 전략을 제안하고, 해양플랜트 장비에 대한 운영, 수리, 해체 등에 관련된 실무적인 현장 경험을 가진 인력을 슬랙으로 확보하며 해외 시장 진출을 위한 정책적인 슬랙을 제공할 것을 제안하였다. 그 외의 다양한 슬랙을 창출하기 위해서 컨소시엄을 구성할 필요도 있다.

• 해양환경안전학회지
• /
• 제21권4호
• /
• pp.428-436
• /
• 2015

이 논문은 해양플랜트에 필요한 인력, 화물 등을 지원, 보급, 운송하는 지원사업의 의의와 특징에 대해서 고찰하고, 현행법과 관련된 문제점을 식별하여 해운법에서 정하는 해상운송사업에 대한 개정을 통한 법의 공백을 최소화함과 동시에 해양플랜트 서비스산업 발전에 필요한 사항을 입법론적으로 제안하였다. 왜냐하면 해양플랜트 지원사업은 기존의 해운법에서 규정하고 있는 국내 외 해상화물 및 여객운송사업의 범위에 완벽하게 포함되지 못하고 있기 때문이다. 따라서 국내에서 해양플랜트 지원선박을 이용하여 해양플랜트에 인력, 화물 등을 지원, 보급, 운송하는 사업을 발전시키기 위해서는 기존의 법역( )의 범위내에서 관리할 수 있도록 해양플랜트 지원사업의 정의와 함께 해운법상의 개별 조항에 대한 명시적인 개정안을 마련할 필요가 있다. 그리고 이 논문은 향후 해양 플랜트 서비스산업 전체의 활성화하는데 필요한 정책적, 법제도적 분야에 대한 추가적인 연구의 진행하는데 선행되는 기초자료로서의 역할을 할 것으로 판단된다.

• 한국CDE학회논문집
• /
• 제19권3호
• /
• pp.203-213
• /
• 2014

The O&M (Operation and Maintenance) phase of offshore plants with a long life cycle requires heavy charges and more efforts than the construction phase, and the occurrence of an accident of an offshore plant causes catastrophic damage. So previous studies have focused on design for reliability, and recently many studies have dealt with a maintenance system to prevent unexpected failures. Nowadays due to the emerging ICTs (Information Communication Technologies) and sensor technologies, it is possible to send health monitoring information of important equipment to administrator of an offshore plant in real time, which leads to having much concern on condition based maintenance policy or predictive maintenance. In this study, we have reviewed previous studies associated with condition-based maintenance of offshore plants, and introduced the approaches predicting failures of the compressor which is one of essential mechanical devices in LNG FPSO.

• 산업경영시스템학회지
• /
• 제37권4호
• /
• pp.12-23
• /
• 2014

The O&M (Operation and Maintenance) phase of offshore plants with a long life cycle requires heavy charges and more efforts than the construction phase, and the occurrence of an accident of an offshore plant causes catastrophic damage. So previous studies have focused on the development of advanced maintenance system to avoid unexpected failures. Nowadays due to the emerging ICTs (Information Communication Technologies) and sensor technologies, it is possible to gather the status data of equipment and send health monitoring data to administrator of an offshore plant in a real time way, which leads to having much concern on the condition based maintenance policy. In this study, we have reviewed previous studies associated with CBM (Condition-Based Maintenance) of offshore plants, and introduced an algorithm predicting the next failure time of the compressor which is one of essential mechanical devices in LNG FPSO (Liquefied Natural Gas Floating Production Storage and Offloading vessel). To develop the algorithm, continuous time Markov model is applied based on gathered vibration data.

• 수산해양교육연구
• /
• 제27권1호
• /
• pp.133-144
• /
• 2015

Recently, Korea shipping companies have been internally/externally difficult to manage their fleet due to the high price of bunker, wage and low cost of charterage and freight. To solve these problems, some shipping companies have tried to set up a new business regarding offshore plant supply vessel(OSV). Owing to the absence of big oil field near the Korea coast, OSV market has not been gradually progressing as far. This study intends to review the legal review of both international and municipal law for the OSV. Therefore I have provided basic legal information to the domestic shipping companies which have desired to enter the OSV's market and suggest legal revision harmoniously to identify the problem in the municipal law.

• 한국해양공학회지
• /
• 제30권1호
• /
• pp.10-17
• /
• 2016

This paper reports a simulation-based design method for the optimized arrangement design of buoyancy modules in a marine riser system. A buoyancy module is used for the safe operation and structural stability of the riser. Engineers design buoyancy modules based on experience and experimental data. However, they are difficult to design because of the difficulty of conducting real sea experiments and quantifying the data. Therefore, a simulation-based design method is needed to tackle this problem. In this study, we developed a simulation-based design algorithm using a multi-body dynamic simulation and genetic algorithm to perform optimization arrangement design of a buoyancy module. The design results are discussed in this paper.

• 한국CDE학회논문집
• /
• 제21권2호
• /
• pp.111-121
• /
• 2016

The plant equipment usually has a long life cycle. During its O&M (Operation & Maintenance) phase, since the occurrence of an accident of offshore plant equipment causes catastrophic damage, it is necessary to make more efforts for managing critical offshore equipment. Nowadays due to the emerging ICTs (Information Communication Technologies) and sensor technologies, it is possible to gather the health status data of important offshore equipment and their environment data, which leads to much concern on CBM (Condition-Based Maintenance). In this study, we will propose an approach to estimate the remaining lifetime of an offshore plant equipment (pump tower) based on gathered ocean environment data.