• Title/Summary/Keyword: Safety management efficiency

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An Analysis on the Operation Efficiency of Safety Management System using DEA Method (DEA분석 기법을 이용한 안전관리체제 운영효율성 분석)

  • Yang, Hyoung-Seon;Kim, Chol-Seong;Noh, Chang-Kyun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.13 no.2 s.29
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    • pp.141-146
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    • 2007
  • In this study, we have investigated several input factors and output factors to maintain safety management of domestic shipping companies, and then have analyzed the efficiency of performance about each shipping companies' safety management system from 1998 year to 2004 year using DEA method. The result of analysis shows that the annual mean efficiency index of total companies tended downward every year. Analysis was that the cause was increase of the cost of repairing ship, the cost of ship's stores and idle day of ship while the number of marine accidents and sanctions of PSC, ship's insurances and P&I insurances was decreased.

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A Basic Study on the Derivation of Vulnerability Factors for Safety Management of old Buildings (노후 건축물의 안전관리를 위한 취약성 요소 도출 기본연구)

  • Oh, Gyuho;Cha, Inhyuck;Ahn, Sungjin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.275-276
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    • 2023
  • In order to prevent disaster risks caused by building aging in advance, the prevailing opinion is that it is urgent to actively improve systems such as mandatory safety inspections, and to calculate risks and develop safety management systems due to building aging. The need for systematic risk management continues to be emphasized in the process of safety inspection and repair of old buildings, but the risk management and safety management techniques of each construction entity have not been established in practice. Accordingly, this study aims to analyze the vulnerability factors of aging buildings and provide basic data on the development of a risk rating calculation model for old buildings and the efficiency of safety management systems in the future.

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A study of decomposition of sulfur oxides(harmful gas) using calcium dihydroxide catalyst by plasma reactions (Ca(OH)2촉매를 이용한 플라즈마 반응에 의한 황산화물(유해가스)의 제거에 관한 연구)

  • Kim, Dayoung;Hwang, Myungwhan;Woo, Insung
    • Journal of the Korea Safety Management & Science
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    • v.16 no.2
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    • pp.237-246
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    • 2014
  • Researches on the elimination of sulfur and nitrogen oxides with catalysts and absorbents reported many problems related with elimination efficiency and complex devices. In this study, decomposition efficiency of harmful gases was investigated. It was found that the efficiency rate can be increased by moving the harmful gases together with SPCP reactor and the catalysis reactor. Calcium hydroxide($Ca(OH)_2$), CaO, and $TiO_2$ were used as catalysts. Harmful air polluting gases such as $SO_2$ were measured for the analysis of decomposition efficiency, power consumption, and voltage according to changes to the process variables including frequency, concentration, electrode material, thickness of electrode, number of electrode winding, and additives to obtain optimal process conditions and the highest decomposition efficiency. The standard sample was sulfur oxide($SO_2$). Harmful gases were eliminated by moving them through the plasma generated in the SPCP reactor and the $Ca(OH)_2$ catalysis reactor. The elimination rate and products were analyzed with the gas analyzer (Ecom-AC,Germany), FT-IR(Nicolet, Magna-IR560), and GC-(Shimazu). The results of the experiment conducted to decompose and eliminate the harmful gas $SO_2$ with the $Ca(OH)_2$ catalysis reactor and SPCP reactor show 96% decomposition efficiency at the frequency of 10 kHz. The conductivity of the standard gas increased at the frequencies higher than 20 kHz. There was a partial flow of current along the surface. As a result, the decomposition efficiency decreased. The decomposition efficiency of harmful gas $SO_2$ by the $Ca(OH)_2$ catalysis reactor and SPCP reactor was 96.0% under 300 ppm concentration, 10 kHz frequency, and decomposition power of 20 W. It was 4% higher than the application of the SPCP reactor alone. The highest decomposition efficiency, 98.0% was achieved at the concentration of 100 ppm.

Development of High Efficiency Boiler with High Safety (안전성이 높은 고효율 보일러 개발에 관한 연구)

  • Jung, Won
    • Journal of Applied Reliability
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    • v.11 no.1
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    • pp.83-95
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    • 2011
  • Boiler efficiency has a direct impact on energy consumptions, which results in lower cost of operations and services. Usually high efficiency boilers are regarded as boilers with an efficiency of greater than 90%. However, it is likely that normal boilers are running at significantly lower efficiencies than this. This paper presents a process of developing a highly efficient energy consumption boiler. We adopt direct heat method while normal boilers are designed as indirect heat method. The submerged combustion method is considered to design for very high efficient boiler.

Analysis of Correlation G. D. Weisman's Way Finding Elements and Visitor Satisfaction -Focus on Seoul Historical Museum- (바이즈만의 길 찾기 요소와 방문객 만족도와의 관련성 분석 -서울 역사박물관을 중심으로-)

  • Kim, Hyung Jun
    • Journal of the Korea Safety Management & Science
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    • v.16 no.3
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    • pp.421-432
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    • 2014
  • This study is intended to analyze the relation between G. D. Weisman's Way finding 4 elements the accessibility and efficiency of consumers as to eternal area for Seoul historical museum. The findings are summarized as the following three aspects. First, G. D. Weisman's Way finding element introduced in this study had a significant impact on visitor satisfaction.. It leads to the following conclusion: The higher the impact is, the greater accessaccessibility and efficiency are. Second, among 4 elements, the factor that had the biggest impact on the accessibility was 'visual-perceptual accessibility'. Thus, 'visual-perceptual accessibility' should be considered first to boost the accessibility to consumers. Third, among 4 elements, the factor that had the biggest impact on the efficiency was 'sign system'. Thus, 'sign system' should be considered first to boost the efficiency to consumers.

A Comparison Study on University Research Efficiency Using DEA Analysis: focused on A University Case (DEA를 이용한 대학 연구 효율성 비교 연구 - A 대학 사례를 중심으로 -)

  • Kim, Seonmin
    • Journal of the Korea Safety Management & Science
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    • v.15 no.1
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    • pp.249-258
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    • 2013
  • Data Envelopment Analysis (DEA) is a useful tool to analyze the relative efficiency of decision making units (DMU) characterized by multiple inputs and multiple outputs. This method has been popularly used as an analytical tool to suggest some strategic improvement. To do this, the results of DEA provide decision makers with a single efficiency score, efficient frontier, return to scale, benchmarking decision making units, etc. The purpose of this paper is to evaluate research performance of 38 universities and provide an inefficient university with the way of organizational changes to be an efficient university by using DEA. Various input and output variables are used to identify technical and scale inefficiency. Additionally, we analyze how an inefficient DMU could be changed an efficient DMU based on a case university. This result will give an insight of constructive directions for increasing of research performance to university decision makers.

Warehouse Picking Efficiency influence Analysis of Product location by Delivery Frequency (출고빈도별 제품 로케이션 배치에 따른 피킹효율 영향 분석)

  • Yim, Woo-Taek;Park, Hyun-Ho;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.16 no.3
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    • pp.363-368
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    • 2014
  • During the fierce competition among the companies, improvement of logistics center managing efficiency is importantly recognized. Among them, studies on improvement of picking work process on about 55% of logistics center managing costs are continuously conducted. And, most of studies focus on analysis on strengths and weaknesses of picking method performable on the stage of logistics center design, etc, so the purposes of this research are to define load location rule by product releasing frequency in logistics managing environment based on conveyer and suggest expected effects by simulation analyzing method to improve picking managing efficiency.

A Study on Development of the Software for Measurement of Safety Cost in Manufacture Industry (제조업의 재해손실비용산정을 위한 소프트웨어 개발에 관한 연구)

  • 권희봉;조수원;이창호
    • Proceedings of the Safety Management and Science Conference
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    • 2001.05a
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    • pp.39-43
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    • 2001
  • The existent system of management for Measurement of Safety Cost are not effective because of the data loss and time loss and occurrence of errors through manual calculation. Therefore, tile development of the software for measurement of safety cost can solve the problem through the systematic calculation for safety cost and converting the related data to database, and also can build the strategy of the investment of Safety cost through analysing and comparing with the past data in the database. As a part of development of the software of Measurement of Safety Cost which is appropriate for the domestic environment, this study is developing a software based on Noguji method, which is one of the methods of Measurement of Safety Cost, and to appraise the efficiency of the management of Measurement of Safety Cost we will implement and improve the software in the case of the domestic enterprises.

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A Study on Development of the Software for Measurement of Safety Cost in Manufacture Industry (제조업의 재해 손실 비용 산정을 위한 소프트웨어 개발에 관한 연구)

  • 권희봉;조수원;이창호
    • Journal of the Korea Safety Management & Science
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    • v.3 no.1
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    • pp.1-10
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    • 2001
  • The existent system of management for Measurement of Safety Cost are not effective because of the data loss and time loss and occurrence of errors through manual calculation. Therefore, the development of the software for measurement of safety cost can solve the problem through the systematic calculation for safety cost and converting the related data to database, and also can build the strategy of the investment of Safety cost through analysing and comparing with the past data in the database. As a part of development of the software of Measurement of Safety Cost which is appropriate for the domestic environment, this study is developing a software based on Noguji method, which is one of the methods of Measurement of Safety Cost, and to appraise the efficiency of the management of Measurement of Safety Cost we will implement and improve the software in the case of the domestic enterprises.

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The Study on the Risk Assesment of Formwork (거푸집공사 위험성 평가에 관한 연구)

  • 고성석;오준호
    • Journal of the Korean Society of Safety
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    • v.17 no.3
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    • pp.96-101
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    • 2002
  • The object of risk assesment is to prevent the accident from arising. The main reason for risk assesment of construction work is to determine priority order of improvement plan about risky work. Formwork is a complicated process that determines the total duration of apartment construction, and occupies 10∼15% of total construction expense, and 17% of serious accidents occur during formwork. So, formwork occupies very importment roles in work sites, economical efficiency and safety. We need to identify the work type with a high risk of accidents, and to establish suitable safety counterplan and implement intensive safety management.