• Title/Summary/Keyword: installation/management

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A Study on the Participation depending on the Rebate changes in the DSM (전력 수요관리 프로그램의 지원금 변화에 따른 참여도 연구)

  • Park, Jong-Jin;Kim, Hyun-Woong;Kim, Jin-O
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.22 no.10
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    • pp.18-23
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    • 2008
  • The electricity demand in Korea has rapidly increased along with a steady economic growth since 1970s. Therefore Korea has positively propelled not only SSM(Supply-Side Management) but also DSM(Demand-Side Management) activities to reduce investment cost of generating units and to save supply costs of electricity through the enhancement of whole national energy utilization efficiency. However study for rebate, which have influence on success or failure on DSM program, is not sufficient. This paper executed to modeling mathematically an amount of potential participants considering rebates, which have influence on penetration amounts for DSM program using by 'A Survey of End-User for Energy Efficiency Demand Side Management Programs'.

Development on the Safety Management System of Hazardous Chemicals under the Chemicals Control Act: Focusing on Safety Assessment System (화학물질관리법상의 유해화학물질 안전관리 개선방안 연구 : 안전성평가 사례 중심)

  • Yoo, Byungtae;Lee, Eun Byul;Kim, Jong Gu
    • Journal of the Korean Society of Safety
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    • v.34 no.3
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    • pp.96-101
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    • 2019
  • Chemicals Control Act have been strengthened to control more safely hazardous chemicals from 2015. In particular, the standards for the installation and management of handling facilities was enhanced with specific regulations depending on type of the facilities and the hazardous chemicals. However, some standards for handling facilities caused difficulties in implementing the strengthened standards due to various field conditions, such as lack of physical space. The Ministry of Environment is implementing Safety Assessment System (SAS) to solve these problems since 2018. However, many plants have difficulties in preparing alternative methods to pass the safety evaluation. The purpose of this study was to review and analyze the SAS and to suggest alternative measures in terms of management and technical aspects through the case study of hydrochloric acid storage tanks. The following safety solutions were suggested for handling facilities that had insufficient the space and capacity for the retaining wall due to physical space. Firstly, insufficient space was resolved by introducing equipment relocation or demolition, and retaining wall expansion. Secondly, the wall of the surrounding buildings was used as an alternative to the retaining wall with additional chemical resistant treatment. Finally, sensor installation and facility inspection were suggested as ways to improve chemical safety. Therefore, improvement of chemical accident prevention system is required not only in terms of facilities supplementation but also management aspect. The results of this study are expected to be available for similar facilities and will be based on the preparation of additional safety assessment as alternatives measures in the future.

AN INTELLIGENT TRANSPORT MANAGEMENT SYSTEM FOCUSED ON MICROSCOPIC TRAFFIC SIGNAL CONTROL

  • Nazmi, Mohd;Takaba, Sadao
    • Proceedings of the Korea Society for Simulation Conference
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    • 2001.10a
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    • pp.77-82
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    • 2001
  • An intelligent road transport management system focused on microscopic, real-time traffic signal control is proposed. Referring to the development of those systems in Japan, extensive use of image traffic detectors observing the movement of vehicles inside intersections, and direct data exchange between the signal controllers of neighboring intersections are newly assumed. On site investigation of five intersections in Japan or in Malaysia shows the possibility of effective information provision and simple algorithm for solving heavy congestion, as well as easy installation.

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A Case Study on Installation and Optimization of Machine-Vision System for Reducing Inferior Products (공정 중 불량 감소를 위한 영상 자동검사 시스템의 구축 사례 연구)

  • 송명식
    • Journal of Korean Society for Quality Management
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    • v.32 no.1
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    • pp.63-74
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    • 2004
  • Recently, enterprises have focused on quality improvement for delighting their customers. Especially, all business sector have checked, analyzed their consumer complaints in detail on their products and made a plan to reduce them. But there is a limitation not to solve them. This paper presents one of tools to reduce non qualified product on their operation line directly by modernized IT technology after analyzing and making the plan.

The Development Plan of Voltage Security On-Line Monitoring System (전압안전성 온라인 감시시스템의 개발방안)

  • Jeon, D.H.;Kweon, S.G.;An, G.W.
    • Proceedings of the KIEE Conference
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    • 1998.07c
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    • pp.1173-1175
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    • 1998
  • This paper presented the development plan of voltage security on-line monitoring system (VSECOMs). VSECOMs consists of voltage security monitoring system and data management system. VSECOMs has the function of bus voltage watch. voltage stability analysis, and voltage security assessment. EMS data on-line acquisition, PSS/E file conversion, and overall data management. VSECOMs is designed with client/server structure. We will seek stable operation of KEPCO's power system by installation of VSECOMs in EMS of KEPCO.

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A Study on the Switching Induction Noise Stability time of Al wiring Duct Using Taguchi Method (다구찌 방법을 이용한 알루미늄 배선덕트의 스위칭 유도노이즈 안정시간에 관한 연구)

  • 홍석묵;조용욱;박명규
    • Journal of the Korea Safety Management & Science
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    • v.4 no.2
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    • pp.179-188
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    • 2002
  • A study to analyze and solve problems of multi wire installation duct experiment has presented in this paper. We have taken Taguchi's parameter design approach, specifically orthogonal array, and determined the optimal levels of the selected variables through analysis of the experimental results using S/N ratio.

Development of Remote Load Management System Using PowerLine Communication (전력선 통신을 이용한 원격부하관리시스템 개발)

  • Na, Chae-Dong;Lee, Sung-Bum;Jeong, Eull-Gi
    • Proceedings of the KIEE Conference
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    • 2002.06a
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    • pp.149-152
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    • 2002
  • In this paper, an simple load management system was introduced. This system is composed of Main Controller, DTU(Dispersion Terminal Unit), Power Line Modem and HMI (Human Machine Interface) program. To control distant loads, network function using powerline communication is implemented in DTU, with HMI program, the untrained users are able to operate system easily. Additionally using the Powerline, the cost and time of installation is saved. The system performance was proved in a several experiments.

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A Study on the Analysis Method of Safety Cost of Tunnel Accident (터널사고 재난 안전비용 분석 방법에 관한 연구)

  • Baek, Chung-Hyun
    • Journal of the Korea Safety Management & Science
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    • v.23 no.1
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    • pp.23-30
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    • 2021
  • This paper analyzed a survey of 388 general target samples to analyze the correlation between disaster safety costs and human risk factor analysis and evacuation behavior due to tunnel accidents. Considering the impact of the tunnel accident on disaster safety costs and the correlation between human evacuation and risk factors in the tunnel environment, the system should be reorganized to reflect the tunnel's basic plan, tunnel cross-section, tunnel installation.

Alternative Evaluation Model for Tower Crane Operation Plan in Modular Construction - Focusing on Modular Unit Installation and Finishing works - (모듈러 건축 타워크레인 운용 계획의 대안 평가 모델 - 유닛 설치 및 마감공사를 중심으로 -)

  • Kim, Joo Ho;Park, Moonseo;Lee, Hyun-Soo;Hyun, Hosang
    • Korean Journal of Construction Engineering and Management
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    • v.19 no.2
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    • pp.50-60
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    • 2018
  • Recently, modular construction method has been widely applied to projects with repetitive processes including dormitory, the residential facility, and the hotel construction due to reduced labor input and shortened construction schedule. Generally, about 40% of total on-site construction cost excluding unit installation cost, is put on exterior finishing work, and thus management of finishing work is deemed important in maintaining the targeted schedule and cost. Since limited equipment is shared so that subsequent activities are not affected while carrying out on-site installation and finishing work, lifting plan becomes more important for modular projects with greater portion of finishing work load. In this regard, tower crane operation plan may take the form of a single cycle or multiple cycles in which equipment efficiency can be affected. However, difficulties exist in evaluating alternatives to tower crane operation plans supporting unit installation and finishing work. Therefore, this study aims to evaluate the alternative of tower crane operation method according to the cyclic period setting in modular building site to determine the effect on T/C uptime and process by parameterizing lifting time for unit and exterior finishing material, lift cycle for unit and exterior finishing material and time required for finishing work. Accordingly, this study develops a simulation model that can increase the tower crane efficiency by controlling the work speed. An academic contribution of this study is to suggest a resource leveling method applying the concept of lifting cycle, and further is expected to be managerially used as a basis for an alternative evaluation of equipment plan.

A Study on the Evaluation of Field Installation Damage and Strength Reduction Factor of Geogrid for Reinforced Retaining Wall (보강토 옹벽용 지오그리드의 현장 내시공성 및 강도 감소계수 평가에 관한 연구)

  • Park, Juhwan;Chun, Byungsik
    • Journal of the Korean GEO-environmental Society
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    • v.13 no.7
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    • pp.5-12
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    • 2012
  • Recently the installation of reinforced earth retaining walls in the domestic construction site has increased, surpassing conventional RC walls. These reinforced walls have various types depending on the reinforcing material, installation method and the form of face panel. However, there are difficulties in design and construction management due to the unproved safety of construction method. In case of reinforcing materials, despite the fact that they come in all different sizes and types produced by small businesses or partially imported with cheap price and low quality, no proper standards for designing the walls have been suggested. In order to apply reinforced retaining wall system to broad cases and design the walls effectively considering site conditions, specific design and construction guidelines for efficient construction management are needed. In conclusion, this study verified that reduction factors can be greatly affected by grain sizes and stiffness of backfill materials and granularity range, therefore in case of relatively large construction site, it is required to redesign the reinforced retaining wall by evaluating site installation resistance test, applying respective reduction factors to each backfill material and select the right geogrid depending on the usage of retaining wall so as to enhance the safety of reinforced earth retaining walls with efficiency.