• Title/Summary/Keyword: hazard analysis

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Researches Related to Seismic Hazard Mitigation in Taiwan

  • Loh, Chin-Hsiung;Yeh, Chin-Hsun
    • Journal of the Earthquake Engineering Society of Korea
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    • v.2 no.3
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    • pp.13-26
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    • 1998
  • In view of the rapid development of economics and technology, perilous meteorological and geological conditions often cause natural disasters and result in severe loss of lives and properties in Taiwan. To promote multi-hazard mitigation strategies in an integrated a, pp.oach, the National Science Council established a National Science and Technology Program for Disaster Mitigation in January 1998. This program emphasizes on the implementation of research results in the National Disaster Management System. This paper describes the earthquake loss estimation methodology that is currently developed in Taiwan. Topics of potential earth science hazards (PESH) and building vulnerability analysis are described in detail.

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A study on the food clean room system observing the regulations of HACCP (HACCP의 환경 최적화를 위한 식품 클린룸 설계에 관한 연구)

  • Won, Young-Jae;Suh, Kee-Won
    • Proceedings of the SAREK Conference
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    • 2009.06a
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    • pp.520-526
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    • 2009
  • This study proposed the optimum design values for the biological clean room system observing the regulations of Hazard Analysis Critical Control Point (HACCP). Even though the standard for industrial clean room system has been well established, the basis for biological food clean room system is the first stage. In order to prevent the contaminations in advance for food storages, processes, and distributions, the criterion of Hazard Analysis Critical Control Point is positively required. This study also suggested the possible ways of how to avoid the hazardous contaminations.

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HACCP의 환경 최적화를 위한 식품 클린룸 설계에 관한 연구

  • Won, Yeong-Jae
    • Air Cleaning Technology
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    • v.23 no.3
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    • pp.1-9
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    • 2010
  • This study proposed the optimum design values for the biological clean room system observing the regulations of Hazard Analysis Critical Control Point (HACCP). Even though the standard for industrial clean room system has been well established, the basis for biological food clean room system is the first stage. In order to prevent the contaminations in advance for food storages, processes, and distributions, the criterion of Hazard Analysis Critical Control Point is positively required. This study also suggested the possible ways of how to avoid the hazardous contaminations.

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Preliminary Hazard Analysis for a Hyperbaric Oxygen Chamber (고압 산소 치료기에 대한 예비위험분석)

  • Jeon, Tae-Bo
    • Journal of Industrial Technology
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    • v.33 no.A
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    • pp.3-8
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    • 2013
  • Reduction of risk plays a pivotal role in the development of medical instruments. A hyperbaric oxygen chamber, as a medical device, is known to help medical therapy for diversity of diseases through provision of high purity oxygen. The use of hyperbaric oxygen is expected to increase in the future and study to rigorously examine reliability and safety is needed. We have performed risk assessment for a newly developed hyperbaric oxygen chamber in this study. We first briefly discussed the system structure and concept of risk assessment for the study. Based on the hazards identified, we performed preliminary hazard analysis for the chamber.

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ISSUES IN PROBABILISTIC SEISMIC HAZARD ANALYSIS FOR NUCLEAR FACILITIES IN THE US

  • Mcguire, Robin K.
    • Nuclear Engineering and Technology
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    • v.41 no.10
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    • pp.1235-1242
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    • 2009
  • Probabilistic seismic hazard analysis (PSHA) is routinely conducted in the US for nuclear plants, for the determination of appropriate seismic design levels. These analyses incorporate uncertainties in earthquake characteristics in stable continental regions (where direct observations of large earthquakes are rare), in estimates of rock motions, in site effects on strong shaking, and in the damage potential of seismic shaking for engineered facilities. Performance goals related to the inelastic deformation of individual components, and related to overall seismic core damage frequency, are used to determine design levels. PSHA has the ability to quantify and document the important uncertainties that affect seismic design levels, and future work can be guided toward reducing those uncertainties.

Hazard Analysis of Train Traffic Control System Software In Integrated Control Centre (통합관제실 열차운행제어 시스템의 소프트웨어 위험원 분석)

  • Ahn Jin;Park Jin-Young;Han Chan-Hee;Sin Duck-Ho;Lee Jong-Woo
    • Proceedings of the KSR Conference
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    • 2005.11a
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    • pp.982-989
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    • 2005
  • Safety of the Train Control System become more important along with the progress of the computer and the technology of communications in these days. Safety of the Train Traffic Control System needs an accurate analysis of the Hazard to reduce losses of a property and lives. Many of advanced railroad nations already had established safety standards when they set the system even considering scrap of railroad and put a great concern on developing safety system which is getting larger and more complicate. Domestic railroad system has to introduce improved technology and systematically prepare and make a scientific survey to achieve unparalleled reliability and safety as well. In this Study, ITCC CTC System will show the research and the analysis of the hazard to ensure the safety of software.

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UsN based Soundness Monitoring Diagnosis System of Power Transmission Steel Tower (UsN 기반의 송전철탑 건전성 감시진단시스템 기본설계)

  • Lee, Dong-Cheol;Bae, Ul-Lok;Kim, Woo-Jung;Min, Bung-Yun
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.56 no.1
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    • pp.56-62
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    • 2007
  • In this paper, design method for power tower hazard diagnosis/predition system based on UsN was proposed. The proposed method used multi-hybrid sensors to measure rotation, displacement, and inclination state of power tower, and made decision/prediction of hazard of power tower. System design was made with requirement analysis of monitoring for transmission power facility and use of MEMS and optic fiber sensors. For hazard decision, analysis of correlation was made using sensor output. LN based on IEC61850,international standard for digital substation, was also proposed. For transmission facility monitoring, digital substation and power tower were considered as parts of power facility networks.

A study on the Hazard analysis and Safety improving for the Structure types of Rail-crossing (철도건널목 구조유형별 사고위험 분석 및 안전개선 방안 연구)

  • Wang Jong-Bae;Hong Sun-Ho
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.145-150
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    • 2004
  • In this paper, the hazardous rail-crossings of 100 sites were selected by preliminary hazard analysis on the 1774 sites in Sep. 2002. The risk factors of rail-crossing were reviewed on the accidents happened in '94$\~$'02 years, and the accident progress mechanism due to 5 types of rail-crossing structure was developed by the cause-result relationship analysis. Method coping with the risk factors was proposed for improving safety of rail-crossing.

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Study on Theoretical Models of Regional Humanity Lung Cancer Hazards Assessment

  • Zhang, Chuan;Gao, Xing
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.5
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    • pp.1759-1764
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    • 2015
  • Purpose: To establish the concept of lung cancer hazard assessment theoretical models, evaluating the degree of lung cancer risk of Beijing for regional population lung cancer hazard assessment to provide a basis for technical support. Materials and Methods: ISO standards were used to classify stratified analysis for the entire population, life cycle, processes and socioeconomic management. Associated risk factors were evaluated as lung cancer hazard risk assessment first class indicators. Study design: Using the above materials, indicators were given the weight coefficients, building lung cancer risk assessment theoretical models. Regional data for Beijing were entered into the theoretical model to calculate the parameters of each indicator and evaluate the degree of local lung cancer risk. Results: Adopting the concept of lung cancer hazard assessment and theoretical models for regional populations, we established a lung cancer hazard risk assessment system, including 2 first indicators, 8 secondary indicators and 18 third indicators. All indicators were given weight coefficients and used as information sources. Score of hazard for lung cancer was 84.4 in Beijing. Conclusions: Comprehensively and systematically building a lung cancer risk assessment theoretical model for regional populations in conceivable, evaluating the degree of lung cancer risk of Beijing, providing technical support and scientific basis for interventions for prevention.

Does Paid Sick Leave Induce Welfare Burden?

  • Namhoon KIM
    • Asian Journal of Business Environment
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    • v.14 no.2
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    • pp.11-18
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    • 2024
  • Purpose: The purpose of this study is to empirically evaluate the unintended welfare losses induced by paid sick leave, examine the severity of the unintended moral hazard loss caused by paid sick leave, and evaluate how much moral hazard cost society can accept to obtain paid sick leave benefits. Research Design, Data and Methodology: We examine the Medical Expenditure Panel Survey data collected in 2013 and 2014 by employing a panel probit analysis to control for individual heterogeneity. Results: The estimation result shows that the probability of absence due to paid sick leave increases from 4.91% to 7.84%. Among them, excluding the probability of increasing absence from 1.29% to 2.69% due to the actual disease, the probability of absence due to the moral hazard was estimated to be 2.41% to 6.49% in the proposed models. Based on the result, if we evaluate the increase in absence caused by moral hazard as a social cost, the estimated cost is approximately $174 to $297 per worker per year. Conclusion: Considering these expected costs, our society can obtain the access benefit from paid sick leave if we are willing to accept the moral hazard cost.