• 대한원격탐사학회지
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• 제40권3호
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• pp.243-255
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• 2024

This study compares Static Terrestrial Laser Scanning (STLS)with the conventional Total Station (TS) method for the geometric assessment of cylindrical storage tanks. With the crucial need for maintaining tank integrity in the oil and gas industry, STLS and TS methods are evaluated for their efficacy in assessing tank deformations. Using STLS and TS, the roundness and verticality of two cylindrical tanks were examined. A deformation analysis based on American Petroleum Institute (API) standards was then provided. Key objectives included comparing the two methods according to API standards, evaluating the workflow for STLS point cloud processing, and presenting the pros and cons of the STLS method for tank geometric assessment. The study found that STLS, with its detailed and high-resolution data acquisition, offers a substantial advantage in having a comprehensive structural assessment over TS. However, STLS requires more processing time and prior knowledge about the data to tune certain parameters and achieve accurate assessment. The project outcomes intend to enhance industry professionals' understanding of applying STLS and TS to tank assessments, helping them choose the best method for their specific requirements.

• 항공우주시스템공학회지
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• 제8권3호
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• pp.34-40
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• 2014

Since the global economic crisis in year 2008, the world civil helicopter market has been growing recently. According to the market outlook in the next decade, the demand of civil helicopter will be driven by the demand of Private & Corporate, Oil & Gas, Off-shore and EMS(Emergency Medical Service) usages. On the other side, the demand of military market will be driven by the modification and upgrading for life extension or performance enhancement than the new helicopter development for replacing old models. To summarize these situations, the demand of MRO(Maintenance, Repair & Overhaul) market has also been on the rise because of the demand due to above several usages in civil side and the life-extension in military side. Through the MRO market analysis for characteristics, developmental trends and a supply chain, this paper describes that the potential of MRO business is considerably large as a propulsive power of domestic helicopter industry. And also, it proposes the construction direction of MRO network because the domestic industry must make the developmental awareness and reliability a stepping-stone towards own helicopter.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2011년도 춘계학술발표회 논문집
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• pp.171-178
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• 2011

During the last decades, global warming from the increased amount of greenhouse gases, mainly carbon dioxide has become a major political and scientific issue. Burning fossil fuels (natural gas, coal and oil) releases $CO_2$, which is also a major cause of global warming. Among the clean environment, wood pellets are considered as promising renewable fossil fuels because of clean burning characteristics, reduction of particulate and NOx emission from combustion. In Korea, more than 50% pellets have to be imported every year because of shortage of feedstocks. On the other hand, about 80% of wood pulps are greatly dependent upon overseas products due to limited forest resources. Under this situation, this study explored how efficiently we have to use forest biomass instead of total dependence on wood as raw materials for pellets.

• 한국식품과학회지
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• 제19권2호
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• pp.134-139
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• 1987

호도유의 트리글리세르드는 HPLC에 의하여 PN별로 분획하고 분취하였다. 각 트리글리세리드는 GLC에 의하여 아실탄소수별로 분획하고 PN별 트리글리세리드의 지방산조성도 분석하였다. 또한 HPLC에 의하여 분획한 각 PN별획분에서 글리세롤의 ${\beta}$위치에 결합하고 있는 지방산은 췌장리파제에의한 효소적 가수분해에 의해서 분석하였다. 호도유의 주요 트리글리세리드의 분자종은 $C_{18:2}{\cdot}C_{18:2}{\cdot}C_{18:1}$(LLO; 10.9%), $C_{18:3}{\cdot}C_{18:2}{\cdot}C_{18:2}$(LnLL; 17.6%) 및 $C_{18:2}{\cdot}C_{18:2}{\cdot}C_{18:2}$(LLL; 37.3%)이었다. ${\beta}$ 위치에 불포화지방산이 차지하는 트리글리세리드 분자종은 90%이상이었다.

• 한국지역지리학회:학술대회
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• 한국지역지리학회 2009년도 하계학술대회 발표집
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• pp.108-115
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• 2009

An increase in oil and gas plants caused by development of process industry have brought into the increase in use of flammable and toxic materials in the complex process under high temperature and pressure. There is always possibility of fire and explosion of dangerous chemicals, which exist as raw materials, intermediates, and finished goods whether used or stored in the industrial plants. Since there is the need of efforts on disaster damage reduction or mitigation process, we have been conducting a research to relate explosion model on the background of real 3D terrain model. By predicting the extent of damage caused by recent disasters, we will be able to improve efficiency of recovery and, sure, to take preventive measure and emergency counterplan in response to unprepared disaster. For disaster damage prediction, it is general to conduct quantitative risk assessment, using engineering model for environmentaldescription of the target area. There are different engineering models, according to type of disaster, to be used for industry disaster such as UVCE (Unconfined Vapor Cloud Explosion), BLEVE (Boiling Liquid Evaporation Vapor Explosion), Fireball and so on, among them.we estimate explosion damage through UVCE model which is used in the event of explosion of high frequency and severe damage. When flammable gas in a tank is released to the air, firing it brings about explosion, then we can assess the effect of explosion. As 3D terrain information data is utilized to predict and estimate the extent of damage for each human and material. 3D terrain data with synthetic environment (SEDRIS) gives us more accurate damage prediction for industrial disaster and this research will show appropriate prediction results.

• 해양환경안전학회지
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• 제27권7호
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• pp.905-917
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• 2021

본 연구는 국내 항구도시 인천, 목포, 광양, 부산, 울산의 대기오염물질 배출특성, 대형선박 배기가스 배출량 및 사회적 비용을 산정하여 배출가스 저감방안의 필요성을 제시하였다. 부산은 선박 입항수가 많고 목포는 선박 입항수는 적지만 선박 배기가스에 의한 배출기여도는 두 항구도시 모두 높았다. 울산은 세계적 수준의 중화학공업, 광양은 제철소, 인천은 제조업과 선박 입항수가 목포보다 많았지만 배출기여도는 낮았다. 선박 배기가스 배출량 산정 결과, CO₂의 배출량이 가장 많고 다음으로는 NOx, SOx으로 배출량이 많았다. 선종별로는 부산, 울산, 인천은 유조선, 광양은 일반화물선, 목포는 여객선에서 각각 많았다. 사회적 비용 결과, 부산은 배출량이 많은 영향으로 사회적 비용이 높았으며, 항목별로는 PM이 높았다. 저황유 사용으로 PM, SOx 배출량을 직접적으로 줄이고, NOx의 배출량을 간접적으로 줄 일수 있다. 하지만 선박 배기가스 중 가장 많은 배출량을 보인 CO₂를 저감하기 위해서는 저황유의 보급만으로는 부족하다. CO₂ 배출량 감축을 위해서는 육상전원공급장치(Alternative Maritime Power)를 사용하는 등 화석연료를 사용하지 않는 저감방안 수립의 필요성을 제기하였다.

• 대한조선학회논문집
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• 제53권6호
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• pp.503-513
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• 2016

In order to reduce the green-house gas exhaustion, International Maritime Organization (IMO) has been reinforcing carbon gas regulations. Due to the regulations, a lot of competitions for designing Eco ship in the shipbuilding industry are progressing now. It is faced with the necessity of reducing hull weight by combining automated systems for optimal compartment arrangement with hull structural design. Most researches on optimum structural design method have been consistently in progress and applied to minimize weight and cost of mid-ship section in preliminary ship design stage based on analytical structural analysis method on fixed compartment arrangement. In order to reduce design period and to improve international technical competitiveness by shortening the period of hull structural design and enhancing design accuracy, it has been felt necessity to combine optimized compartment arrangement with optimum design of ship structure based on the international regulations and rules. So in this study, the automated design algorithm for longitudinal members has been developed to combine automated algorithm of compartment arrangement with hull structural design system for oil tanker. The SeaTrust-Hullscan software developed by Korean Register is used to perform ship structural design for mother ship and selected design cases. The effect of weight reduction is verified with comparison of ship weight between mother ship and the cases suggested in this study.

• 한국포장학회지
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• 제19권2호
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• pp.81-85
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• 2013

본 연구의 목적은 식품 포장재를 뚫고 침입하여 식품에 큰 피해를 입히는 화랑곡나방 유충의 유입을 방지하기 위한 방충향낭을 개발하는 것이다. 방충 물질로는 해충에 대해 살충 및 기피력을 가지는 것으로 알려진 회향의 에센셜오일인 회향오일(FO)을 선정하였다. 훈증테스트를 통하여 화랑곡나방 유충에 대해 FO의 훈증사멸 효과를 관찰하였고 120시간 후 FO은 약 56%의 사멸률을 보였다. 이 후 포장기법 중 하나인 향낭 기법을 사용하여 FO 향낭을 제조하여 기피효과를 측정하였다. 그 결과, FO 향낭은 무처리구와 비교하여 유의적인 기피효과를 보였다. 하지만 휘발성이 강한 에센셜오일의 특성으로 인해 48시간에서의 기피력이 24시간이 지난 향낭의 기피력보다 낮은 것을 볼 수 있었다. Gas chromatography를 이용한 FO 향낭의 방출 경향 분석에 따르면 오일의 총 방출량 및 trans-aenthole의 함량이 일정 시간 이후 점차 방출량이 줄어드는 경향을 보였다. 따라서 FO 향낭은 방충력을 가지는 것으로 분석되지만 높은 휘발성으로 인해 기피력은 시간이 지날수록 감소할 것으로 보인다.

• 한국가스학회지
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• 제24권4호
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• pp.73-83
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• 2020

본 연구에서 다루고 있는 문제점은 공정 사고 감소는 산업 안전 감소보다 덜 감소하고 있으며, 석유 및 가스 공정산업의 주요 사고로 인한 손실은 지난 몇 년 동안 감소하지 않고 있는 상태이다. 특히 저장탱크에서 현재의 위험 접근 방식은 안전운전을 유지하는 것에 비해 설계의 안전성을 향상시키는 것에 더 중점을 두고 있다. 이에 Bow-Tie 방법을 활용하여 적절하게 사용한다면 공정의 안전성을 향상시킬 수 있다. Bow-Tie 방법은 운영적인 측면에 초점을 맞추고 모든 중요한 안전 배리어를 명확하게 강조하고 배리어 효율성을 분석하여 적합성을 평가 할 수 있다.

• 한국해양공학회지
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• 제34권3호
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• pp.208-216
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• 2020

The Integrated Offshore Standard Specification (IOSS) involves Korean shipyards, classification societies, research institutes, the Korean industrial society, engineering companies, and oil companies with the objective of reducing costs and risks without compromising safety in international offshore engineering procurement construction (EPC) projects using new standardized bulk components and qualification procedures. The activities of the IOSS include the analysis of the existing rules and regulations to achieve the best standardization, which is reflected in the best practices, and minimize the variables in regulations and rules. In addition, a standard inventory of shapes and dimensions, referred to as specifications, is proposed in the IOSS. In this paper, the aluminum tertiary standardization part (IOSS S102-1/2 S104: Specification for Structural Tertiary Design) is presented with the details of the procedures, background reviews, and cost-benefit analyses of the design and verification methods for standard designs in the IOSS standardization items. Based on the cost-benefit analysis, the application of standardized aluminum tertiary items to offshore projects has significant advantages in terms of maintenance and repair compared to the carbon steel tertiary items utilized in current industrial practices.