• Title, Summary, Keyword: risk assessment

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Urban Flood Vulnerability and Risk Assessments for Applying to Urban Planning (도시계획 적용을 위한 도시홍수 취약성 및 리스크 평가)

  • Lee, Sang-hyeok;Kang, Jung Eun
    • Journal of the Korea Planners Association
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    • v.53 no.5
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    • pp.185-206
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    • 2018
  • This study conducted two flood assessments and compared their methods, procedures, and outcomes for applying to urban planning: a flood vulnerability assessment in accordance with the Climate Change Vulnerability Assessment adopted by the government and a probabilistic risk assessment stressed by IPCC. The flood vulnerability assessment employed the indicator method based on the manual and guidelines. The probabilistic risk was defined as a product of the probability of occurrence and its effect. It used Markov Chain Monte Carlo (MCMC) simulation, which is effective in random number generation and machine learning based on the Bayesian concept. The results of two evaluations focused on Busan show that while spatial distributions of risk areas are quite similar, risk area calculated by flood vulnerability assessment is a little larger than risk assessment due to different units of analysis, used data, and assessment methodology. Risk assessment provides more accurate results, but assessment method is complicated, while vulnerability assessment is easy to use, results cannot be quantitatively validated. Therefore, the combination of vulnerability and risk assessment is considered meaningful as it could improve existing flood assessments and contribute to decision making to establish safer cities.

An Alternative Risk Assessment Model in EMS (환경경영시스템에서의 위험평가 모델)

  • 김종걸;김창수
    • Proceedings of the Safety Management and Science Conference
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    • pp.271-276
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    • 2004
  • The risk assessment model is an important subsystem for effective establishment and operation of EMS (environment management system). In case of poor risk assessment long-term and large-scale failure expense might be brought. Managing policy, target and other indices based on risk assessment can guarantee successful EMS. In this paper, we aim at comparative analysis of various risk methods and propose an alternative risk assessment model for EMS.

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Case Study of Risk Management on Communication Payload System Development (통신탑재체 개발 위험관리 Case Study)

  • Jeong, Cheol-Oh;Eun, Jong-Won
    • Journal of Aerospace System Engineering
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    • v.5 no.2
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    • pp.8-11
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    • 2011
  • The scope of this paper is to show a risk management plan including how to perform risk assessment and to make a mitigation plan aspects of the communication payload system development. According to system engineering management guide of DoD of USA and risk management plan of satellite communication system, risk assessment and mitigation plan of communication payload system were performed. In this paper, it is indicated the process of risk management and risk assessment procedures as well as mathematical model for risk assessment of DoD guide. It is shown how risk assessment and mitigation plan have implemented in communication payload system development through case study.

A Study on Fire Risk Analysis & Indexing of Buildings (건축물의 화재위험의 분석과 지수화에 관한 연구)

  • Chung, Eui-Soo;Yang, Kwang-Mo;Ha, Jeong-Ho;Kang, Kyung-Sik
    • Journal of the Korea Safety Management and Science
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    • v.10 no.4
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    • pp.93-104
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    • 2008
  • A successful fire risk assessment is depends on identification of risk, the analytical process of potential risk, on estimation of likelihood and the width and depth of consequence. Take the influence on enterprise into consideration, Fire risk assessment could carry out along the evaluation of the risk importance, the risk level and the risk acceptance. A large part of the limitation of choosing the risk assessment techniques impose restrictions on expense and time. If it is unnecessary high level risk assessment or Probabilistic Risk Assessment of buildings, in compliance with the Relative Ranking Method, Fire risk indexing and assessing is possible. As working-level technique, AHP method is useful with practical technique.

Development of logical structure for multi-unit probabilistic safety assessment

  • Lim, Ho-Gon;Kim, Dong-San;Han, Sang Hoon;Yang, Joon Eon
    • Nuclear Engineering and Technology
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    • v.50 no.8
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    • pp.1210-1216
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    • 2018
  • Site or multi-unit (MU) risk assessment has been a major issue in the field of nuclear safety study since the Fukushima accident in 2011. There have been few methods or experiences for MU risk assessment because the Fukushima accident was the first real MU accident and before the accident, there was little expectation of the possibility that an MU accident will occur. In addition to the lack of experience of MU risk assessment, since an MU nuclear power plant site is usually very complex to analyze as a whole, it was considered that a systematic method such as probabilistic safety assessment (PSA) is difficult to apply to MU risk assessment. This paper proposes a new MU risk assessment methodology by using the conventional PSA methodology which is widely used in nuclear power plant risk assessment. The logical failure structure of a site with multiple units is suggested from the definition of site risk, and a decomposition method is applied to identify specific MU failure scenarios.

Comparative Study on the Institutional Framework of Risk Assessment between German, UK and Korea, Japan in Asian Countries (독일, 영국과 한국, 일본 등 아시아 국가 간의 위험성평가 제도 비교연구)

  • Shin, In Jae
    • Journal of the Korean Society of Safety
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    • v.28 no.1
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    • pp.151-157
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    • 2013
  • This paper is a comparative study on risk assessment policy between Asian countries such as Japan, Korea, Singapore and EU countries, German, UK. Risk assessment is a tool adopted currently in many countries in order to reduce occupational risk in workplace because it help employers to identify their hazard arousing in their working conditions then to settle the issues. This paper compares institutional framework posed in EU and Asian countries. As a result of comparative study, EU countries have more concrete legal system for risk assessment than Asian countries. But Asian countries are now interested in risk assessment such as Japan, Korea and Singapore. The author also suggests successful ways to settle down the risk assessment policy in a country. These findings help to understand occupational health and safety policy on risk assessment in Asian countries.

Risk Assessment in the Shipbuilding Industry: Present and the Future

  • Jeong, Byung-Yong;Kim, Woo-Jin;Jeong, Ye-Seul
    • Journal of the Ergonomics Society of Korea
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    • v.31 no.1
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    • pp.143-149
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    • 2012
  • Objective: The aim of this study is to gain an overview of the risk assessment and management system in the shipbuilding industry. Background: The use of risk assessment techniques has grown significantly in recent years. Method: Various references have been reviewed to evaluate risk assessment and management policy. Results: Adapting the risk assessment system has become an important approach not only to prevent industrial accidents but also to enhance the efficiency of works for shipbuilding workers. Conclusion: Risk assessment is an approved technology for operators to address larger hazards, and to ensure risks have been reduced to appropriate levels cost effectively. Application: These results can be used to provide baseline information for risk assessment and management policy.

The Study of Risk Matrix Development for Urban Metro EMU (도시철도차량 적용을 위한 위험도 매트릭스 개발에 관한 연구)

  • Kim, Young-Sang
    • Journal of the Korean Society of Safety
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    • v.26 no.6
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    • pp.111-117
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    • 2011
  • Risk-based railway safety management has been mandatory in Korea as by relevant laws and regulations enacted since the Railway Safety Act 2004. In particular, the Railway Vehicle Safety Guidance came into effect on Jan 1, 2008 specifies the details of methodology for hazard analysis, risk assessment and safety verification and validation. Fundamentals for success of the risk-based safety management are systematic hazard identification and risk assessment by use of reasonable risk assessment criteria, but the principle of risk-based safety management has not been applied in an effective way to introduction and maintenance of railway vehicle systems because definite risk assessment criteria have not been set down for each railway system or railway network. The purpose of this study is to suggest a risk matrix development principle for risk assessment of domestic urban metro vehicles by analyses of relevant rules and railway operating environment of Korea.

Risk Assessment Diethylhexyl phthalate released from PVC Medical Devices based on Reproductive Toxicity

  • Lee, H-M;Yoon, E-K;Lee, G-Y;Kim, H-J;Yang, J-S;Yang, K-H;Han, S-Y;Jang, S-Y;Choi, D-W
    • Proceedings of the Korean Society of Toxicology Conference
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    • pp.102-102
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    • 2003
  • Diethylhexyl phthalate (DEHP) was known as endocrine disrupter revealing reproductive / developmental toxicity. For a long time, risk due to DEHP released from PVC medical devices was became an issue for patient receiving blood bag, iv injection solution like saline and Hartman's solution. This study was conducted to suggest permissible intake level (PIL) of DEHP based on reproductive toxicity, to quantify daily intake level of DEHP can be exposed to patient through various medical treatment and to estimate risk values of DEHP released from PVC medical devices.(omitted)

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