• Journal of the Korean Society of Safety
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• v.39 no.1
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• pp.96-103
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• 2024

The demand for mass calculation of offsite consequence analysis to conduct exhaustive single-unit or multi-unit Level 3 PSA is increasing. In order to perform efficient offsite consequence analyses, the Korea Atomic Energy Research Institute is conducting model optimization studies to minimize the analysis time while maintaining the accuracy of the results. A previous study developed a model optimization method using efficient plume segmentation and verified its effectiveness. In this study, we investigated the possibility of optimizing the model through particle size distribution setting by checking the reduction in analysis time and deviation of the results. Our findings indicate that particle size distribution setting affects the results, but its effect on analysis time is insignificant. Therefore, it is advantageous to set the particle size distribution as fine as possible. Furthermore, we evaluated the effect of multithreading and confirmed its efficiency. Future optimization studies should be conducted on various input factors of offsite consequence analysis, such as spatial grid settings.

• Journal of the Korea Institute of Building Construction
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• v.6 no.4 s.22
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• pp.53-60
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• 2006

Quality control and safety represent increasingly important concerns for project managers. In the worst case, failures may cause personal injuries or fatalities. Accidents during the construction process can similarly result in personal injuries and large costs. We present the results of a study designed to identify the tools that are most widely used and those that are associated with successful project management in general, and with effective project risk management in particular. The study is based on a questionnaire administered to a sample of project managers from construction enterprises. The response data was analyzed in order to find which tools are more likely to be used in the those organizations that report better project management performance and in those that value the contribution of risk management processes.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.164-165
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• 2021

In Korea, in the case of fire scenarios in performance design, it is assumed that the sprinkler is not working. In addition, it does not applicate various fire conditions. Therefore it is not enough that the accuracy about fire scenario. In foreign countries, reseach is being conducted to predict the casualities that can occur due to fire in the building space through statistical risk analysis. Also, research is consistently conducting for design that consider the sprinker probability of operation. Therefore, to analyze the fire risk of each building in Korea, the risk was analyzed using statistical data. As a result, the risk of casualties that can occur for each building use was analyzed as 0.6(persons/cases) for residential buildings, 0.25(persons/cases) for sales facilities, and 0.12(persons/cases) for buisiness facilities.

• Korean Security Journal
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• no.25
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• pp.185-208
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• 2010

This study is to suggest the current security education programs and improvement of industrial security curriculums in Korea. We live in a world of insecurity; the world is changing at an ever accelerating pace. Life, society, economics, international relations, and security risk are becoming more and more complex. The nature of work, travel, recreation, and communication is radically changing. We live in a world where, seemingly with each passing year, the past is less and less's guide to the future. Security is involved in on one way or another in virtually every decision we make and every activity we undertake. The global environment has never been more volatile, and societal expectations for industrial security and increasing if anything. The complexities of globalization, public expectation, regulatory requirements, transnational issues, jurisdictional risks, crime, terrorism, advances in information technology, cyber attacks, and pandemics have created a security risk environment that has never been more challenging. We had to educate industrial security professional to cope with new security risk. But, how relevant is a college education to the security professional? A college degree will not guarantee a job or advancement opportunities. But, with a college and professional training, a person has improved chances for obtaining a favored position. Commonly, Security education and experience are top considerations to find a job so far, also training is important. Today, Security is good source to gain competitive advantage in global business. The future of security education is prospect when one considers the growth evident in the field. Modern people are very security-conscious today, so now we had to set up close relevant industrial security programs to cope with new security risk being offered in colleges or several security professional educational courses.

• Journal of the Korea Institute of Building Construction
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• v.20 no.2
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• pp.137-145
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• 2020

The recent bridge construction projects demand thorough and systematic safety and risk management, due to the increase of risk factors following the introduction of new and complex construction methods and technologies. Among many types of damages that can occur in bridge construction projects, the damages to third parties who are not directly related to the existing property of the contractor construction project can also bring about critical loss in the project in order to compensate the damages. Therefore, risks that could be caused by the loss occurred to indemnify the third party damages should be clearly analyzed, although there are not subsequent amount of studies focusing on the issue. Based on the past record of insurance payment from domestic insurance companies for bridge construction projects, this study aimed to analyze the risk factors of bridge construction for loss caused to compensate the third-party damages happened in actual bridge construction projects and to develop a quantified and numerical predictive loss model. In order to develop the model, the loss ratio was selected as the dependent variable; and among many analyzed independent variables, the superstructure, foundation, flood, and ranking of contractors were the four significant risk factor variables that affect the loss ratio. The results produced can be used as an essential guidance for balanced risk assessment, supplementing the existing analysis on material losses in bridge construction projects by taking into account the third-party damage and losses.

• Proceedings of KOSOMES biannual meeting
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• 2005.11a
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• pp.1-6
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• 2005

여객선 관련 종사자인 여객, 선박직원, 운항관리사, 해양경찰관에 대한 안전 및 보안 의식을 조사하여 분석함으로써 새로운 해상의 위협으로 등장하는 테러, 준테러 등 보안위협을 저감하는 방안을 모색하고 보안문화 정착방안을 제안하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.137-137
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• 2011

급격한 세계인구의 증가에 의해 물 부족지역이 세계 각지로 확산되고 있다. 이에 따라, 건전한 수자원으로써 하수처리수의 재이용이 주목을 받고 있다. 하수처리수의 재이용시에는 특히, 재이용수의 미생물학적 안전성과 더불어 화학물질 등으로부터 기인할 수 있는 인체 및 생태계에의 리스크를 고려해야 한다. 미국 EPA는 병원성 미생물 뿐만 아니라 화학물질에 대한 안전성을 확보 차원에자외선/과산화수소 등의 고도산화처리법을 검토하였다. 1일 $10m^3$ 처리규모의 연속실험장치를 이용, 검토된 공정별 실제 하수 2차 처리수중에 존재하는 의약품류의 제거효과, 에너지 소비량 및 생태리스크 저감효과 등을 비교, 평가하였다. 에너지 소비량에 있어서는 공정별로 다소 차이가 있었으나, 본 실험동안 검출된 38종의 의약품류 제거에는 각 공정 모두 매우 효과적이었다. 에너지 소비측면에서는 오존 단독공정이 가장 적은 에너지 소비량에서 타 공정과 동일한 수준의 의약품류 서 막처리나 자외선 처리 등의 고도처리시설에 대한 정보를 재이용수 가이드라인에 제시하고 있는 반면, 우리나라에서는 재이용수중에 일정농도 이상의 염소가 잔류하도록 함으로써, 재이용수의 미생물학적 안전성 확보만을 고려하고 있다. 최근, 수환경분야에서는 의약품류라는 화학물질이 유럽, 미국 및 일본 등지를 중심으로 주목을 받아오고 있으며, 이들은 ng/L-${\mu}g$/L 수준으로 수환경중에서 검출되고 있다. 이들의 주요 발생원으로 하수처리시설이 지목되고 있으며, 따라서 하수처리수의 재이용시 잔류 의약품류에 의한 리스크 발생 가능성이 우려되고 있다. 이를 배경으로, 하수처리시설에서 의약품류를 효과적으로 제거할 수 있는 공정으로 오존 및 오존/자외선, 제거효과가 얻어졌다. 한편, 오존처리시 발암성 물질인 브로메이트($BrO_3^-$) 등과 같은 부생성물 생성 가능성을 고려하면, 오존 단독공정보다 상대적으로 많은 에너지를 소비하는 오존/자외선, 자외선/과산화수소 등의 고도산화처리법이 높은 적용성을 갖는 것으로 나타났다. 향후, 수자원 부족문제로 재이용수의 용도가 훨씬 다양해 질 것으로 예상된다. 그에 따라, 재이용수의 안전성 확보를 위해 보다 폭넓은 검토가 예상되지만, 현 단계에서는 오존을 포함, 다소 많은 에너지 소비가 예상되는 자외선을 이용한 고도산화처리법이 다양한 미량 화학물질의 제거에 유효한 공정으로 판단된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.7
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• pp.4863-4870
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• 2015

Currently, as a priority to secure the safety of the railway signalling system, verification for satisfy of the safety integrity requirements(SIR) is required to the essential elements. Safety Integrity Requirements(SIR) verification is performed based on the system safety analysis. But the probability of securing basic data for system safety analysis significantly dropped because there is no experience yet performed in the country. Therefore we are had to rely on a qualitative analysis. There are methods such as qualitative risk analysis matrix, and risk graphs. The qualitative analysis is wide, the width of the accident. However, the reliability of the result is significantly less has a disadvantage. Therefore, it should be parallel quantitative safety analysis of the system/products in order to compensate for the disadvantages of the qualitative analysis. This paper presents a quantitative safety analysis method to overcome the disadvantages of the qualitative analysis. And through a result, highly reliable Safety Integrity Requirements(SIR) verification measures proposed. Verification results, the dangerous failure incidence for vital data processing device was calculated to be $1.172279{\times}10^{-9}$. The result was verified to exceed the required safety integrity targets more.

• Environmental engineer
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• v.24 s.255
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• pp.20-24
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• 2007

60년의 역사를 바탕으로 'Global Leader'를 지향하고 있는 LG화학은 '차별화된 소재와 솔루션으로 고객과 함께 성장하는 세계적 기업'이라는 장래상을 가지고 경제적 이윤 창출은 물론 제품 생산 및 유통과정에 있어서의 환경.안전 리스크를 최소화하고 제품의 친환경성을 제고하며 다양한 사회공헌 활동을 통해 사회적 책임을 다하고자 노력하고 있다. 이를 위해 LG화학은 화학산업의 자발적 환경.안전.보건개선활동인 'Responsible Care'를 기반으로 환경친화기업, ISO14001, PSM, KOSHA18001 등 환경.안전.보건 경영시스템을 구축하고, 전사적 환경목표인 "오염물질 배출 'O'화"활동, 근로자와 지역주민의 건강과 안전을 확보하기 위한 사고예방활동, 에너지 절감 및 온실가스배출 감축, 친환경제품과 공정개발 등 환경.안정.보건.에너지 분야의 지속적인 개선을 위해 노력하는 한편 이동화학교실, 화학캠프 등의 사회공헌활동을 통해 자라나는 청소년들에게 화학에 대한 흥미를 북돋우고 화학의 중요성을 알려 미래 우리나라를 이끌어갈 과학인재를 육성하는데도 기여하고 있다.

• Journal of the Korea Safety Management & Science
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• v.12 no.3
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• pp.1-11
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• 2010

Establishing a framework, to explain the path to safety accidents considering major safety management factors such as physical conditions including on-site activities and workplace, as well as human factors as to labor, supervisors, or managers, would be effective as the basis to control project's risks by preventing disasters. Therefore, this study aimed to clarify the mechanism in safety management and disaster occurrence. In order to accomplish the purpose, it identified and classified the factors related to accidents, reviewed the causal relationships among them, and suggested the influence diagram. The results of this research are expected to contribute to reinforcing the preventive management, and facilitating the development of integrated site control system based on safety risks.