• 한국철도학회논문집
• /
• 제11권4호
• /
• pp.410-416
• /
• 2008

본 연구에서는 '2003년 산업연관표'를 사용하여 우리나라의 철도운송산업이 국내 운송산업 전체에서 차지하는 위상 및 철도운송산업과 여타산업의 관계적 특징에 대하여 살펴보았다. 그리고 산업연관분석 연구방법을 사용하여 국내 철도운송산업의 생산활동이 403개 여타 기본산업에 미치는 경제적 파급효과에 대해서 분석하였다.

• 한국수소및신에너지학회논문집
• /
• 제22권6호
• /
• pp.925-933
• /
• 2011

The traditional feedstock for dimethyl ether (DME) has been natural gas obtained by pipeline from a nearby natural gas or oil field. This report focuses on other feedstock: Coal bed methane (CBM). The resource availability and suitability of CBM for DME manufacturing have been investigated. CBM in a short time has become an important industry, providing an abundant clean-burning fuel and also suggesting as a feedstock for gas industry. The use of CBM will have very little impact on the KOGAS' DME process design and economics up to 50 vol% of $CO_2$ in the CBM source. Many of the CBM sources in Asia are high in $CO_2$, but pose no difficulties for the KOGAS' DME plant. Since tri-reformer requires substantial $CO_2$ in its feed, no $CO_2$ removal from the CBM feed is needed. The $CO_2$ in the CBM means that less $CO_2$ needs to be recycled from the downstream in the process.

• Journal of Information Science Theory and Practice
• /
• 제10권2호
• /
• pp.30-44
• /
• 2022

The primary function of an electronic records management system (ERMS) is to support organisations in providing effective records management services by enabling efficient remote access to the organisations' records. This helps the organisation to continue running during emergency events, such as the COVID-19 pandemic. The need to study ERMS for accessing records remotely has increased dramatically, due to the increase in daily use. The situation arising from the COVID-19 pandemic has increased the need for implementing proper digital systems, such as ERMS, to enable efficient work processes and enhance business continuity. An ERMS has the potential to allow organisations to create records and workflows off-site. During a pandemic, the ability to structure processes digitally helps in maintaining operations remotely. This study aims to provide a narrative review of the ERMS literature with an emphasis on explaining the primary components of ERMS that act as enablers for the implementation of the system in the oil and gas sector of developing countries. The current study proposes ERMS roles and responsibilities that could enhance business continuity. The authors use a qualitative narrative review and analyse the literature related to this study and its findings. The results show that, in cases of risk or crises, staff members need to have easy access to their records and documents to remain productive. An ERMS allows professionals to remain active and work off-site. Thus, ERMS play a significant role in protecting an organisation's content through the monitoring and control over who has authorisation to access its records.

• 한국건설관리학회논문집
• /
• 제10권5호
• /
• pp.3-15
• /
• 2009

최근 해외 건설시장 플랜트 분야의 수주 증대에 따라 오일 가스 분야의 프로젝트가 증가하고 있다. 따라서 국내 건설 산업 업체들의 해외 플랜트 사업의 경쟁력을 확보하기 위해서는 생산성 향상 기술 경쟁력 확보 전략적 경영 추진 등 적극적인 대처 방안 수립이 요구되고 있다. 그 중에서도 해외 플랜트 사업의 오일 가스 분야는 산업 경쟁력 향상을 위하여 프로젝트 수행과 관련한 EPC(Engineering Procurement Construction) 유통 정보의 활용이 더욱 요구되지만, EPC 단계별 다양한 업무에서 발생하는 유통정보 콘텐츠를 효율적으로 관리하기 위한 콘텐츠 분류체계가 제시되고 있지 못하고 있다. 그로 인하여 설계도면의 변경, 중복업무의 발생, 업무주제간의 정보 누락 등의 문제점이 발생하고 있다. 이런 문제점으로 인하여 시장점유율이 감소하고 있으며 경쟁력이 약해지고 있다. 따라서 본 연구는 오일 가스분야의 콘텐츠 관리체계의 실무적 활용의 증대와 건설산업 정보관리의 효용성을 향상시키기 위하여 콘텐츠 관리 체계를 확립하기 위한 BPM(Business Process Management) 기반의 콘텐츠 분류 체계를 제시하고, 국내기업의 경쟁력이 가장 낮은 설계단계의 Business Process를 정의하고 요구되는 지식의 유형을 체계화하고, 콘텐츠 정보를 분석하여 설계단계 산업설비 유통정보의 체계화를 지원하고자 한다.

• 가스산업과 기술
• /
• 제5권1호
• /
• pp.39-47
• /
• 2002

With the expansion of natural gas demands in many countries, the necessity of LNG receiving terminals has been increased. The offshore LNG Floating Storage and Regasification Unit (FSRU) attracts attentions not only for a land based LNG receiving terminal alternative, but also for a feasible and economic solution. Nowadays, as the reliability of offshore oil and gas floating facilities and LNG carriers gains with proven worldwide operations, the FSRU can achieve a safety level that can be comparable to an onshore terminal. The design development related with safety features of the FSRU has been extensively carried out by oil and gas companies, shipyards, engineering companies, and equipment vendors, and has been successful so far in many fields. The construction of the FSRU can be achieved by integrating various technologies and experiences from many disciplines and many participating companies and vendors. In this paper, reviews on some of the important design features and design improvements on FSRU together with the practical construction aspects in cargo containment, vaporization system, ESD system, and operation modes, have been covered in comparison with actual LNG carrier, onshore receiving terminal, and FPSO systems. In order to materialize an FSRU project, the technical and economic justification has to be preceded. It is believed that once the safety and technical soundness is convinced, the FSRU can bring a higher project feasibility by reducing the overall construction time and cost. Through this study, an FSRU design readily applicable to an actual project has been developed by incorporating experiences gained from many marine and offshore projects. The wide use of proven standard technologies adopted in the series construction of LNG carriers and offshore FPSOs will bring the project efficiency and reliability.

• 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.

• 한국염색가공학회지
• /
• 제35권4호
• /
• pp.256-273
• /
• 2023

Among the dyeing industries, the tenter process is a process that improves the quality of fibers by drying and ironing (heat treatment) dyed fabrics, and drugs such as water repellents, antistatic agents, and fiber softeners are mainly used in these tenter processes. These drugs are vaporized in the process of treatment by high temperatures (180 ~ 230℃), and are observed in a complex form such as white smoke, oil mist, and fine dust, causing odor. To treat the complex exhaust gas at the rear end of the tenter facility, most companies operate by installing a wet scrubber and an adsorption tower alone or in parallel, but there are many problems. In particular, the insoluble oil mist at the rear end of the tenter has significantly low processing efficiency in the cleaning dust collection facility, and there is a problem in the facility by adsorption due to the occlusion phenomenon caused by the oil mist. In addition, the odor gas at the rear end of the tenter contains a lot of aldehydes, and in order to improve these various problems, a complex exhaust purification device using cyclone and electric support collector was developed. This study examined the applicability of economical and efficient technology by removing complex air pollution at the rear end of the tenter and applying improved technology than the existing technology.

• 한국항해항만학회지
• /
• 제40권1호
• /
• pp.1-6
• /
• 2016

본 연구에서는 선박에서 발생하는 대기오염물질을 처리하기 위해 사용되는 습식 스크러버를 이용한 배기가스 세정시스템(EGCS: Exhaust Gas Cleaning System)에서 발생되는 폐수를 재이용 할 수 있는 순환시스템을 개발하기 위해 진행되었다. 선박 배기가스 DePM, DeSOx 순환처리장치 (Recycle system)의 세정수의 입자성물질과 분산유를 효과적으로 제거할 수 있는 수 처리 시스템을 개발한 결과 원심분리형 Purifier만으로는 미세한 분산유의 처리가 어렵다는 결과가 도출되어 원심분리형 Purifier 후처리로 유수분리 경사 분리판을 이용한 유수분리기의 일종인 Coalescer를 본 시스템에 적용하였다. Coalescer는 2차 분산 상태의 에멀젼화 된 미세 기름입자를 합착시켜 분리하는 기술이다. 선박 배기가스 DePM, DeSOx 순환처리장치 (Recycle system)에서 배출되는 세정수를 Purifier와 Coalescer를 이용하여 처리한 결과 입자성물질은 55% 분산유는 유입수 대비 99%이상 처리되는 것을 확인하였다. 따라서 선박 대기오염 저감을 위한 습식세정탑 시스템에 본 세정수 처리시스템을 도입하면 세정수로서 재사용이 가능하다고 판단된다.

• Journal of Microbiology and Biotechnology
• /
• 제31권6호
• /
• pp.823-832
• /
• 2021

Mushroom cultivation along with the palm oil industry in Malaysia have contributed to large volumes of accumulated lignocellulosic residues that cause serious environmental pollution when these agroresidues are burned. In this study, we illustrated the utilization of lignocellulolytic enzymes from the spent mushroom substrate of Pleurotus pulmonarius for the hydrolysis of palm oil mill effluent (POME). The hydrolysate was used for the production of biohydrogen gas and enzyme assays were carried out to determine the productivities/activities of lignin peroxidase, laccase, xylanase, endoglucanase and β-glucosidase in spent mushroom substrate. Further, the enzyme cocktails were concentrated for the hydrolysis of POME. Central composite design of response surface methodology was performed to examine the effects of enzyme loading, incubation time and pH on the reducing sugar yield. Productivities of the enzymes for xylanase, laccase, endoglucanase, lignin peroxidase and β-glucosidase were 2.3, 4.1, 14.6, 214.1, and 915.4 U g^-1, respectively. A maximum of 3.75 g/lof reducing sugar was obtained under optimized conditions of 15 h incubation time with 10% enzyme loading (v/v) at a pH of 4.8, which was consistent with the predicted reducing sugar concentration (3.76 g/l). The biohydrogen cumulative volume (302.78 ml H₂.L^-1 POME) and 83.52% biohydrogen gas were recorded using batch fermentation which indicated that the enzymes of spent mushroom substrate can be utilized for hydrolysis of POME.

• 한국마린엔지니어링학회:학술대회논문집
• /
• 한국마린엔지니어링학회 2005년도 전기학술대회논문집
• /
• pp.160-165
• /
• 2005

The proceeding bearings of marine diesel engine are affected by dynamic loads from the cylinder gas pressure and the inertia force from the crank mechanism. Oil film must support the load of the shaft and it also must protect the proceeding and the bearings from damage. This study uses Goenka's new curve fit to carry out the theoretical analysis of oil film in proceeding bearings for MAN B&W 12K90MC-C and Hyundai Heavy Industry Co., Ltd HiMSEN H21/32 Engine. The applied engine's analysis results show the behavior of the proceedings in main and crank pin bearings. The results of this study will be the proper criteria for the proceeding bearings design and be available for development of the new technology in the proceeding bearing and for the high strength lining coating.