• Title/Summary/Keyword: operation evaluation

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A Study on the Safety Operation and Evaluation of Unconventional Oil Plant (비전통오일 시설물의 안전성 운용확보 및 평가에 관한 연구)

  • Jin-Woo Jung;Young-Woo Na;Neung-Won Yang
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.11 no.4
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    • pp.576-581
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    • 2023
  • In this study aims to provide operational guidelines based on risk assessment and safety evaluation in the operation of non-traditional oil production plants, serving as alternative resources in comparison to conventional oils within the construction sector. Presently, operational facilities within these plants are active. However, integrating comprehensive management through sectional and device-specific diagnostic and evaluation systems in similar platform-based operational management systems proves to be a challenging reality. Consequently, this research introduces an evaluation methodology tailored for an operation-centric management system using an integrated management approach, and evaluates its practical applicability within the construction field.

Exploratory Study of International Sports Event Life Cycle (복합종목 국제스포츠이벤트 생애주기에 대한 탐색적 연구)

  • Kwon, Kisung;Oh, Taeyeon
    • Journal of Sport and Applied Science
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    • v.3 no.1
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    • pp.1-14
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    • 2019
  • Numerous types of sporting events have been hosted in Korea during the last decades. Sport events produce various types of data, and there is a clear necessity of storing and utilizing this information. From this background, the purpose of this study is to draw complex sports categories from international sport events life cycles in order to categorize standards of knowledges management system. This study utilized qualitative methods: expert groups discussion for overall life cycle steps and in-depth interviews for detail life cycle steps. The results show that there are several life cycle steps: bidding, preparation, operation, evaluation, post management steps. To be more specific, for the bidding step, there are check, plan, implementing detail phase; and the preparation step is based on event preparation Basis Build, event preparation implementation, test and supplementation phases. For the operation step, event operation system switch, event operation during the period, finish operation phases are deducted. Evaluation and post management step do not have detail phases. Efforts to store and utilize knowledge can be one of the starting points to make the operation of sport events efficiently.

Implementation of DYLAM-3 to Core Uncovery Frequency Estimation in Mid-Loop Operation

  • Kim, Dohyoung;Chang hyun Chung;Moosung Jae
    • Nuclear Engineering and Technology
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    • v.30 no.6
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    • pp.531-540
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    • 1998
  • The DYLAM-3 code which overcomes the limitation of event tree/fault tree was applied to LOOP (Loss of Off-site Power) in the mid-loop operation employing HEPs (Human Error Probabilities) supplied by the ASEP (Accident Sequence Evaluation Program) and the SEPLOT (Systematic Evaluation Procedure for Low power/shutdown Operation Task) procedure in this study. Thus the time history of core uncovery frequency during the mid-loop operation was obtained. The sensitivity calculations in the operator's actions to prevent core uncovery under LOOP in the mid-loop operation were carried out. The analysis using the time dependent HEP was performed on the primary feed & bleed which has the most significant effect on core uncovery frequency. As the result, the increment of frequency is shown after 200 minutes duration of simulation conditions. This signifies the possibility of increment in risk after 200 minutes. The primary feed & bleed showed the greatest impact on core uncovery frequency and the recovery of the SCS (Shutdown Cooling System) showed the least impact. Therefore the efforts should be taken on the primary feed & bleed to reduce the core uncovery frequency in the mid-loop operation. And the capability of DYLAM-3 in applying to the time dependent concerns could be demonstrated.

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Profitability Evaluation System for Railway Transportation Plan (철도수송계획의 수익성 평가체계)

  • Kim, Dong-Hui;Hong, Sun-Heum
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2004.05a
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    • pp.211-214
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    • 2004
  • In railway system, the transportation plan corresponds to master plan for transport services. This service plan must be constructed to minimize operational cost or maximize revenue considering transportation demands and resource capacities in the operation company, and includes several sub-planning activities such as train operation frequency plan, train (schedule) plan, train capacity assignment plan, and rolling stock requirement plan. In this paper, we present profitability evaluation system for current transportation plan. The proposed system can be used for evaluating profitability by estimating train service revenue considering customer demands.

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Development of a Simulation Model for the Evaluation of the Off-Dock Container Yard (자영 컨테이너 장치장의 평가를 위한 시뮬레이션 모델의 개발)

  • 윤원영
    • Journal of the Korea Society for Simulation
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    • v.6 no.1
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    • pp.109-122
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    • 1997
  • The Off-Dock Container Yard (ODCY)s in Pusan are located at 48 different places, and it causes serious problems in the container cargo transport and inland traffic near Pusan district. Hence, the analysis and evaluation of ODCY operation is important. Therefore, this paper proposes a simulation model which evaluates the operation of ODCY. It also proposes a simulation model using an object-oriented approach which includes the system is modeled with object-class hierarchy and SIMPLE++, an object-oriented simulation software, is used to develop the model.

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A Study on Probabilistic Reliability Evaluation Considering Transmission System :TRELSS and TranRel (송전계통을 고려한 확률론적 신뢰도 평가에 관한 연구 : TRELSS and TranRel)

  • 최재석;강성록;트란트롱틴;전동훈;문승필;추진부
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.53 no.1
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    • pp.43-55
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    • 2004
  • This paper presents a study on evaluating the reliability indices considering a transmission system. Because successful operation of electric power under the deregulated electricity market depends on transmission system reliability management, quantity evaluation of transmission system reliability is very important. This paper introduces features and operation modes of the Transmission Reliability Evaluation for Large-Scale Systems(TRELSS) Version 6.0, a commercial program made in EPRI, and TranRel-I V3.2, a educational program made in GSNU(GyeongSang National University) for assessing reliability indices of composite power system. The packages access not only bulk but also bus indices for reliability evaluation of composite powers system. The practicality, effectiveness and future works of this methodology are illustrated by demonstrations of two case studies of modified IEEE 25 buses reliability test system using TRELSS and TranRel-I and a brief case study for the KEPCO size system using TranRel-II made in GSNU.

Probabilistic Reliability Evaluation of Power System using TRELSS II - Focused on Case Studies of IEEE RTS - (TRELSS를 이용한 전력계통의 확률론적 신뢰도 평가 II - IEEE RTS 사례연구를 중심으로 -)

  • Tran, Tungtinh;Kang, Sung-Rok;Choi, Jae-Sok;Jeon, Dong-Hoon;Choo, Jin-Boo
    • Proceedings of the KIEE Conference
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    • 2003.11a
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    • pp.67-70
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    • 2003
  • In recent, the importance and necessity of some studies on reliability evaluation of grid come from the recent black-out accidents occurred in the world. The quantity evaluation of transmission system reliability is very important under competitive electricity environment. The reason is that the successful operation of electric power under the deregulated electricity market depends on transmission system reliability management. The various results of many case studies for the IEEE 25buses system using the Transmission Reliability Evaluation for Large-Scale Systems(TRELSS) Version 5_1, a program made in EPRI are introduced in this paper. Some sensitivity analysis has been included. This paper suggests that the some important input parameters of the TRELSS can be determined optimally from this sensitivity analysis for high reliability level operation of a system.

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Research on Development of Housing Welfare Program Satisfaction Evaluation Tool -Focusing on housing welfare programs for residents of long-term public rental housing in Seoul-

  • Yoon Hye JUNG;Jung Seok OH
    • The Journal of Economics, Marketing and Management
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    • v.12 no.1
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    • pp.53-64
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    • 2024
  • Purpose: The purpose of this study is to develop a satisfaction evaluation survey tool that reflects the characteristics of the program for housing welfare supported in long-term public rental housing in Seoul. Research design, data and methodology: The main research methods of the study were review of previous studies, literature review, and expert consultation. Results: First, the characteristics of each housing welfare program being promoted by Seoul City were summarized, and the characteristics were reflected in the evaluation survey tool. Second, the SERVOUAL model, a service quality model, was used to measure satisfaction with the housing welfare program and modified to suit the characteristics of the program. Third, an evaluation survey tool was constructed by dividing the evaluation tool into common questions and individual questions, and for the operation and sustainability of the housing welfare program, rather than just evaluating satisfaction, program loyalty was used as a survey item. Fourth, through expert advice, more than 10 evaluation questions for each housing welfare program were revised. Conclusions: The results of future research are expected to be used to prepare practical operation plans through annual monitoring of housing welfare programs and comparative analysis between programs.

Optimal Operation of Dispersed Generation in MicroGrid Systems (마이크로 그리드에서 분산전원의 최적 운영 방안)

  • Kim, Kyu-Ho;Rhee, Sang-Bong;Kim, Soo-Nam;Lee, Sang-Keun
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.486_487
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    • 2009
  • This paper presents a method for optimal operation to improve reliability of MicroGrid systems considering load types and interruption cost. The objective functions such as power losses cost, operation cost of dispersed generations, power purchasing cost, and interruption cost are minimized for reliability improvement and efficient operation. The several indices for reliability evaluation are improved by renewable energy sources installation.

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A Study on the Operation Frequencies of the Multiple Tie Tamper (Multiple Tie Tamper의 투입주기평가에 관한 연구)

  • 오지택
    • Proceedings of the KSR Conference
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    • 2000.11a
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    • pp.434-441
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    • 2000
  • This paper estabilsh the systematical scheme that evaluates the operation frequencies of the MTT(Multiple Tie Tamper). An evaluation of the operation frequencies, covering 4 different permanent ways that are Kyungbu, Homan, Jungang and Youngdong, has been carried out using real track irregularities. The deterioration rate of track irregularities used to evaluate rational operation frequencies of MTT in a block of railway track. Furthermore, this paper provides the scheme that prevents damage due to excess using of MTT and to promote efficiency of MTT application.

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