• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 A
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• pp.61-65
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• 2000

This paper presents the load shedding case studies and recommendations of load shedding scheme For improving the reliability to suit the requirements of LG-Caltex refinery plant power sγstem. It is recommended for LG-Caltex to decrease the total generation for the economic dispatch. When the LG-Caltex refinery is isolated from KEPCO utility system, the proper load shedding scheme should be implemented since total generation in LG-Caltex refinery plant is less than the load demand. According to the studies carried out the logic-based load shedding is recommended as the main protection scheme, with the combination of the under-frequency relay load shedding.

• 플랜트 저널
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• 제5권3호
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• pp.50-58
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• 2009

In this paper, the present condition for localization of process pumps and the enhancement method of the localization ratio of process pumps for refinery and chemical plant market were studied. The market of plant industry in the world has grown rapidly since 2000. However, the profit of domestic plant EPC compaies cound not have been increased as much as the market scale because they procured most of equipment from overseas. To make remarkable profit of plant EPC companies in the petrochemical industry, localization of equipments is required. Suitable equipment for localization is process pump applied API 610 standard. An purchased amount of pumps from overseas by domestic plant EPC companies in the last two years were 230 billion won. If process pumps are localized then an profit of plant EPC project will increase.

• Corrosion Science and Technology
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• 제11권2호
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• pp.43-47
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• 2012

Recently, regulatory bodies quite often encourage to adopt risk-based inspection (RBI) and management programs because they can enhance safety simultaneously with deregulation in Korea. RBI is an integrated methodology that factors risk into inspection and maintenance decision making. This paper describes an example of how to use known risk assessment codes (API 580, API 581 BRD) to address such safety analysis requirements for risk management in the refining industry. Specifically, this paper reports the methodology and the results of implementation to the Crude Distillation Unit(CDU) plant of refinery units using the $KGS-RBI^{TM}$ program, developed by the Korea Gas Safety Corporation in reference of API Codes and ASME PC (Post Construction) with a suitable consideration of Korean situation. The results of the risk and reliability assessment using $KGS-RBI^{TM}$ program are useful in determining whether the detected defects are tolerable or required to be repaired. The subsequent decisions are to manage the future inspection, repair and maintenance planning in the risk reduction control.

• 시스템엔지니어링학술지
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• 제10권1호
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• pp.1-15
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• 2014

Refinery plant producing petroleum products from crude oil has significantly contributed to the creation of the national interests as a leading engineering industries. However, domestic Engineering Procurement Construction (EPC) companies are facing heavy competition for orders. Domestic EPC companies as EPC contractors are faced with some problems such as undertaking responsibility for FEED packages produced by other FEED companies. But domestic EPC contractors are unfamiliar to development and validation of FEED packages. It causes poor profitability and lower competitiveness of domestic companies. It is necessary for domestic companies to have capability to perform FEED activities in order to overcome these limitations instead of focusing on EPC phase after FEED phase. The systematic procedure is needed to perform the FEED activities, however, there are present difficulties on it due to the lack of experience in FEED packages development which require various engineering knowledge of chemical process, mechanics, electrics, instrumentation, civil engineering. This study has applied systems engineering method which is multi-disciplinary approach to derive and verify the solution to meet the customer's needs when the complex system is developed to task execution process development of FEED activities for refinery plant. The problems that may occur in the future were identified in advance by taking into account the various stakeholders and system context through the application of systems engineering. It helps to develop the task execution process systematically. The developed task execution process of FEED activities is planned to make effectiveness verified by engineering professionals experienced in FEED and continually enhance this process by field application.

• 기술사
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• 제16권1호
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• pp.13-19
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• 1983

As one of staff members participated in the full course of the plant construction project of On-san Refinery to its successful completion. I had my past expierence that the plant construction project was so complicated, and a Long period required, and thus there were so money problems to be solved. Among the problem, I mainly noticed that the following listed points were solved and improved. 1. Each drawing should be in every accuracy possible. 2. Contract should be specified in every detail possible. 3. All invoiced prices of breack down list should be coped with the current market prices. 4. All execution of work should be in the most accuracy. A. Planing execution of work. B. Coordination with supervisor group. C. Economical method for execution of work. D. Safety control. 3, Calculation work field should be established seperately 6. Each staff members should be work at the best of his pride.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 1998년도 춘계학술발표회 초록집
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• pp.5-6
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• 1998

• 한국토양비료학회지
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• 제19권1호
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• pp.32-37
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• 1986

벼에 대(對)한 규회석(硅灰石) 및 광재규산질비료(鑛滓珪酸質肥料)의 시용효과(施用效果)를 검토(檢討)하기 위(爲)해 유효규산함량(有效珪酸含量)이 56ppm정도(程度)인 사양토(砂壤土)에서 3년간(年間) 포장시험(圃場試驗)을 실시(實施)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 규회석(硅灰石) 및 광재규산질비료시용(鑛滓硅酸質肥料施用)은 생육초기(生育初期)에는 분얼(分蘖) 및 초장(草長)을 억제(抑制)하나 생육후기(生育後期)에는 분얼수(分蘖數)를 늘리고 초장(草長)을 길게 했었다. 2. 규회석(硅灰石) 및 광재규산질비료시용(鑛滓硅酸質肥料施用)으로 수량(收量)은 증대(增大)되었으며 규회석(硅灰石) 및 광재규산질비료(鑛滓硅酸質肥料施)를 동일량(同一量)으로 시용(施用)했을 때의 수량증대효과(收量增大效果)는 같았다. 3. 수확기(收穫期) 식물체(植物體)의 규산흡수이용율(珪酸吸收利用率)은 광재규산질비료(鑛滓硅酸質肥料) 시용(施用)보다 규회석시용(硅灰石施用)에서 더 높았다. 4. 시험후(試驗後) 토양중(土壤中) 유효규산잔존율(有效珪酸殘存率)은 규회석시용(硅灰石施用)보다 광재규산질비료(鑛滓硅酸質肥料施) 시용(施用)에서 높았다. 5. 시험후(試驗後) 토양중(土壤中)의 유효규산함량증가(有效珪酸含量增加)는 규회석(硅灰石) 및 광재규산질비료(鑛滓硅酸質肥料施)에 관계(關係)없이 0.5N-HCl 가용규산성분함량(可溶珪酸成分含量)으로 1kg/10a 시용시(施用時) 약(約) 2.3ppm 증가(增加)되었다. 6. 식물체(植物體)의 $SiO_2/N$비(比)가 클수록 목도열병(稻熱病) 이병율(罹病率)은 감소(減少)하는 경향(傾向)이었다.

• 전기학회논문지
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• 제65권1호
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• pp.200-207
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• 2016

Nowadays, it is a global trend to build refinery or chemical plants with an isolated system in a place distant from the center of a city. In the refinery or chemical plants equipped with an isolated system, induced motors mostly take the load, and the scale of high-voltage electric motors reaches from several kW up to several MW. Therefore, it is needed to examine the effects of electric motors on the power system closely in the stages of planning and designing a plant to build a stable power system. This study is aimed to investigate how to decide rated voltage in consideration of stability which has not been considered in the stages of planning and designing so far in order to secure stability for the power system.

• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 1996년도 국제심포지움 21세기 첨단식물생산시스템의 실용화
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• pp.63-73
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• 1996

The importance of plant factory which blend agriculture and manufacture has been discussed widely. This company has researched hydroponics technique for cultivation which has been mainly developed in the sites of Okinawa and Hyougo Prefecture. In 1987, we stopped the previous research there, and started a new one far plant factory at the Agricultural Research Center of Chiba Prefecture. In 1989, we built four experimental plant factories (120㎡) at Chiba Oil Factory Refinery in Ichihara-city, developing techniques of cultivation, equipment production and environmental control for cultivation system of tomato, strawberry and leaf vegetables. (omitted)

• 한국대기환경학회지
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• 제24권2호
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• pp.229-237
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• 2008

Hazardous air pollutants emitted from the oil refinery plant were surveyed from 1993 US and 2005 Korean TRI data. Toluene, xylene, methanol, MTBE and n-hexane, relatively large in amount of fugitive emission, are considered as candidates of newly designated HAPs in Korea. The sealed oil pump, one of equipments among fugitive sources in the crude oil distillation tower was examined for the estimation of amounts of annual HAPs emissions according to several calculation methods using registered emission factors. Emission rates showed to be decreased with following calculation factors; average emission factor>pegged emission factor>concentration emission factor>correlation equation. Annual emission amounts of benzene, toluene, xylene. ethyl benzene and nhexane from the distillation tower were estimated and amounts of these HAPs calculated with TVOC concentrations obtained from LDAR program and correlation equations showed only 6% of those from using concentration factors.