• 한국안전학회지
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• 제31권3호
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• pp.162-167
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• 2016

As the simple empirical and phenomenological model applied to the analysis of leakage and explosion of chemical substances does not regard numerous variables, such as positional density of installations and equipment, turbulence, atmospheric conditions, obstacles, and wind effects, there is a significant gap between actual accident consequence and computation. Therefore, the risk management of a chemical plant based on such a computation surely has low reliability. Since a process plant is required to have outcomes more similar to the actual outcomes to secure highly reliable safety, this study was designed to apply the CFD (computational fluid dynamics) simulation technique to analyze a virtual prediction under numerous variables of leakages and explosions very similarly to reality, in order to review the computation technique of the practical safety distance at a process plant.

• 한국안전학회지
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• 제31권4호
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• pp.27-34
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• 2016

Process Safety Management (PSM) system was introduced since 1996 and it makes voluntarily organizing and managing chemical accident prevention system by company itself that contributes to reduce the chemical accidents. However, large or small scaled chemical accidents had occurred frequently in these days. This trend is brought up the necessity to analyze and improve PSM system. In this study, it was conducted by the questionnaire survey and workshop for prevention of major industrial accidents in PSM sites in order to collect extensive opinions from all walks of life and identify overall operation condition. It was proposed to establish improvement plan of implementing condition assessment in PSM system. By results of the study, company's voluntary safety management will be induced by improved PSM system and management plan and it expects to prevent the major industrial accidents.

• 한국가스학회지
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• 제3권1호
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• pp.8-13
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• 1999

산업안전보건법 제49조 2에 의거하여 유해$\cdot$위험설비를 보유한 사업장의 사업주는 당해 설비로부터 위험물질의 누출, 화재, 폭발 등으로 인하여 사업장내의 근로자에게 즉시 피해를 주거나 사업장 인근지역에 피해를 줄 수 있는 중대산업사고를 예방하기 위해 사업장이 공정안전관리를 시행해야 한다. 그러나 국내의 많은 화학관련 기업들은 안전관리에 많은 시간과 인력을 투자하는 경향이 증가하였으나 아직까지는 대기업에 소속된 화학공장에 국한되어 있으며, 특히 IMF시대에 중$\cdot$소기업 형태의 화학공장은 자금압박 등의 어려움으로 생산성 향상에 급급한 나머지 안전에 대한 인적$\cdot$물적 투자를 꺼려하는 경향이 지배적이다. 따라서 중$\cdot$소 화학공장이 갖고 있는 경제적, 현실적 문제점을 보완함과 동시에 능동적으로 공정의 안전성을 확보하는데 도움을 줄 수 있는 공정안전관리 시스템을 구축하였다.

• 한국안전학회지
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• 제33권5호
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• pp.141-149
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• 2018

In a PCB factory, there is a corrosive chemical substance supply system that can causes major leakage accidents. These accidents can give rise to shut down the factory and do residents damage that cause enormous loss of properties. To mitigate these risks, it is necessary to provide a chemical disaster prevention system. Moreover, after considering the situation and environment of the production site, it is of great importance to build an optimal chemical accident prevention system by reflecting risk reduction measures from the point of process design and by assessing quantitative risk based on reliability data. However, because there was no established database of the reliability about facilities and equipment that can be used in the domestic, the business site and consulting organization had being used the reliability data such as USA CCPS(Center for Chemical Process Safety). In these days, Korean institutes are studying on reliability data utilization method of quantitative risk assessment for preventing chemical accidents and domestic utilization algorithms and storage bed of reliability data. This study presents samples of reliability database about the chemical substance supply system that constructed from the history data such as failure, maintenance for 10 years at a PCB factory. Also, this work proposes the safety design criteria for supply facilities of corrosive chemical substance by assessing quantitative risk on the basis of the reliability data.

• 대한안전경영과학회지
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• 제2권1호
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• pp.129-139
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• 2000

Hazard and operability Review(HAZOP) is widely used as a process safety analysis which systematically identifies potential process deviations and settles the problems. In this paper, we carried out a process hazard analysis using HAZOP in K chemical plant. As a result, we showed that the plant could be operated more saftly and be saved a lot of money by eliminating several existing hazardous factors through the change of processes and designs.

• 한국가스학회지
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• 제26권2호
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• pp.27-38
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• 2022

선진국에서는 공정안전관리제도의 도입으로 사고는 상당히 감소하였으나, 규제적 성격을 띄며, 실질적인 사업장안전관리의 실태를 보여주기 어렵다는 한계를 보인다. 많은 기관에서 공정안전상태를 포괄적으로 모니터링 할 수 있는 공정안전성과지표의 사용을 권장하고 있다. 본 연구에서는 공정안전성과지표 적용을 위하여 관련 Guideline을 비교·분석하고 사업장의 공정안전시스템을 분석하여 지표로 활용하는 방안을 검토하였다. 문헌적 지표에서는 절차의 준수 여부 위주로 확인하는 반면, 시스템 기반의 지표에서는 안전시스템의 특정 목적을 위한 절차나 검사 등을 명확하게 식별할 수 있도록 하고, 운영상태가 어떤지 측정하여 모니터링 할 수 있다. 이러한 특성은 안전관리 활동을 운영함에 있어 도출되는 보완사항들의 명료성 측면에서 더 유리함을 알 수 있다. 이를 활용하여 사업장 안전관리 수준을 효과적으로 보여줄 수 있다.

• 한국안전학회지
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• 제23권6호
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• pp.91-99
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• 2008

The identification of thermal hazards associated with a process such as heats of reaction and understanding of thermodynamics before any large scale operations are undertaken. The evaluation of thermal behavior with operating conditions such as a reaction temperature, stirrer speed and reactants concentration in neutralization process of pigment plant are described. The experiments were performed by a sort of calorimetry with multimax reactor system The aim of the study was to evaluate the results of heat of reaction in terms of safety reliability to be practical applications. It suggested that we be proposed safe operating conditions and securities for accident prevention on reactor explosion through this study.

• 한국안전학회지
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• 제36권3호
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• pp.24-30
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• 2021

Heat is generated during the synthesis and mixing process of chemical compounds due to a change in activation energy during the reaction. A runaway reaction occurs when sufficient heat is not removed during the heat control process within a reactor, rapidly increasing the temperature, reaction speed, and rate of heat generation inside the reactor. A risk assessment was executed using an RC-1 (Reaction Calorimeter) during Friedel-Crafts acylation. Friedel-Crafts acylation runs the risk of rapid heat generation during Active Pharmaceutical Ingredient (API) manufacturing; it was used to confirm the risk of a runaway reaction at each synthesis stage and during the mixing process. This study used experimental data to develop a safety efficiency improvement plan to control the risks of runaway and other exothermic reactions, which was implemented at the production site of a chemical plant.

• 한국안전학회지
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• 제22권6호
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• pp.35-40
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• 2007

As a way of improving the safety of the chemical facilities, the risk based-inspection(RBI) was executed for the facilities of the applied petrochemical plant using KS-RBI Ver. 3.0 program developed based on the API-581 based resource document(BRD). From an evaluation result of KS-RBI program, we could find the evaluation of the process safety management(PSM) for the applied plant, risk of the applied process, risk of static facilities and pipes, and the demage mechanism of the facilities. Also, we could suggest a proper inspection plan(frequency and method of inspection) using the calculated risk and the status of the facilities. Therefore, the applied plant could be achieved a reduced inspection cost by an extension of inspection frequency, improved productivity, improved reliability of the facilities, and a computerized history management.

• 한국안전학회지
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• 제28권1호
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• pp.40-46
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• 2013

In the chemical process industries, accidents have a high potential and large effects on catastrophic results. Therefore the safety management for accident prevention plays a crucial role to guarantee the process safety. For these reasons, many systematic methods for safety management system have been widely employed in the fields of chemical processes. PSM (Process safety management) is one of most representative methods. The audit system, which is one of PSM system components, evaluates the performance of PMS system. However, most existing safety audit systems are not systematic and these are performed based on knowledges and experiences of various specialist. Moreover, the safety audit is only performed based on each independent technical component. So, the results of safety audit are not a quantitative index but only a series of commentaries. Finally, it is very difficult to obtain the comparison with other plants or industries. In this study, the novel systematic method and index-based accident database of auditing safety management systems for quantitative assessment are proposed. First, the elements of safety audit replace technical methods to categories of accident database. The F-N curve of each category for accident database is employed to derive the index for quantitative assessment. The Accidental Factor Risk Index (AFRI) is suggested for evaluating the effect of each element in accident database and safety audit system. The safety audit can be modified according to the proposed index.