• 대한안전경영과학회지
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• 제18권1호
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• pp.17-24
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• 2016

Many fatal and non-fatal injuries occurred as a result of unexpected falls from horse scaffolds during structural or finishing works such as painting, plastering, or plumbing. Therefore, this study is to improve safety standards for horse scaffolds used mostly in the interior finishing works. But hazard elements for the horse scaffolds has not been specifically identified. This study has analyzed the accidents of horse scaffolds to prevent construction accidents and the characteristics of a serious accidents related the horse scaffolds. It was suggested a safety management plan and a group of accidents characteristics. The results of this study are expected to be utilized as basic data for prviding a reference related to the horse scaffolds and to be unified the regulations associated with the horse scaffolds.

• 전기학회논문지
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• 제57권1호
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• pp.82-87
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• 2008

It is impossible to database(DB) the patterns of power cable events and cause analysis of faulted cable because the product liability(PL) law have been enforced in Korea, since 2002. In additions, simulation and pattern of power cable events are needed for DB system under accelerated deterioration. In this paper, we tested for resistance to cracking of cable below the 22.9kV class due to thermal stresses. This method of exam is following IEC 60811-3-1(Common test methods for insulating and sheathing materials of electric cables). From the results, The 22.9kV calss A power cable was discolored on the surface and significantly reduced in the longitudinal direction. As the thermal weight properties of A power cable was definitely varied, we are able to guess the problem of manufacture. If the cable was defect by the manufacture, the victims would be able to claim for damage in the PL system.

• 산업경영시스템학회지
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• 제35권2호
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• pp.204-211
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• 2012

In this study, appropriate preventive measures are suggested as follows by analyzing industrial accident cases occurred for five years of company J and workers' survey. First, personnel management including meticulous shift work and rotation task for older workers should be made strictly in terms of safety and health management. Second, Industrial disasters occurred more in spring than in other seasons, so safety management will have to be enhanced in spring. That is, to reduce industrial disaster various occupational safety and health activities to prevent spring fatigue are needed. Third, to improve safety consciousness of workers, penalties for those who have not received safety training and for people without protective equipment are required. Also, hazard prediction training such as Tool Box Meeting shall be proceeded. Fourth, building of proactive safety culture that the workers themselves handle risk factors is urgent. Fifth, the company-wide safety and health programs including safety awards and cases presentation are needed to be planned.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 C
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• pp.1813-1815
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• 2002

As the statistical data, the electrical shock accidents by electrical power facilities of 22.9kV substation is about 100 per years which shows very high occupation rate of 11.3%. There is many hazard factors in this place using high voltage because electrical accident can be occurred in near live part as well as contact. Regarding electrical shock accident in 22.9kV substation as there are many cases that have not been exposed industrial disaster, it is very hard to know exact causes of such accidents in many cases, and therefore it is difficult to set up effective preventive measures. Therefore in this paper, it is intended to prepare the basic data to establish more effective preventive measures of electric shock accidents in 22.9kV substation through understanding the real conditions based on investigation and analysis in various types.

• 대한안전경영과학회지
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• 제17권4호
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• pp.105-112
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• 2015

Sawmilling industry remained a high risk with the average 4.73% of industrial accidents in 2010-2012 that was eight times that of general manufacturing. Sawmilling industry had 200 industrial accidents victim in average. Manufacturing process in sawmill industry contained dangerous machinery such as conveyors, roller, saw ( band saw, circular saw) etc. It may be effective to figure out the type of industrial accidents occurred in the past and extend risk assessment which can predict hazard such as near miss when implementing exposure or potential dangers in sawmill industry. This study conducted research on the actual condition on the place of industrial accident occurrence, detailed work and contact object when injured, and injured part targeting 643 businesses which had industrial accidents in 2010-2012. As the results, RPN of general sawmill industry was the highest 'ganglip saw' with 36,157. RPN of the following order were 'moving truck' with 25,454, 'special machining operations' with 22,283. Also, probability of general sawmill industry was a lots within 1 year, while risk appeared a lots within 5 years. So, risk assessment shall be needed to emphasis on accident prevention of sawmill industry. And additional work will be needed on the risk assessment in hazard prevention work of supervisors.

• 한국가스학회지
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• 제5권2호
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• pp.36-42
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• 2001

가정에서 일어나는 가장 일반적인 사고 중의 하나는 실내 가연성 가스누출에 의한 폭발 사고이다. 이러한 폭발 사고현장의 분석에 의하면 경우에 따라서 누출가스가 실내를 완전히 연소 하한계의 농도로 채올 수 있는 양보다 매우 작은 가연성 가스 양에 의하여 발생할 수 있다. 따라서 폭발이 일어날 수 있는 최소한의 가스 양은 실내 누출된 가스농도의 불균일한 정도에 의존하게 된다. 일반적으로 메탄과 같은 공기보다 가벼운 가스는 천장에서 축적되는 경향이 있고, 프로판의 경우에는 바닥에 축적되는 경향이 있다 본 논문에서는 매우 작은 양의 가스 누출에서 폭발 위험성 분석을 위한 가우스분포폭발 모델을 제시하였다. 이 모델은 연소한계농도에 기초를 두고, 특정 폭발 압력이 나타날 수 있는 최소한의 가스 누출량을 예측하는데 사용할 수 있다. 가우스모델을 이용하여 분석하면, 가정집에서 누출된 가스의 부피가 실내 부피에 비하여 $0.5\%$ 이하에서도 건물이 붕괴되는 폭발사고가 일어날 수 있다. 본 모델은 가스안전기기 개발을 위한 가스폭발 위험성 분석과 가정집에서 폭발사고 원인조사에 유용하게 활용될 수 있을 것으로 사료된다.

• 한국화재소방학회논문지
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• 제17권4호
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• pp.20-27
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• 2003

화학공장은 위험한 물리 화학적 특성을 가진 많은 물질들을 다루기 때문에 다른 어떤 공장보다 더 사고의 위험성이 크다. 띠라서 화학공장에서의 각 장치에 대한 위험성 평가는 반드시 필요하다. 현재 사용되고 있는 위험성 평가 방법은 정성적 또는 정량적인 방법으로 각각 개별적으로 적용되는데 정성적, 정량적의 통합된 방법을 적용하면 빠르고 쉽게 적용할 수 있다는 정성적인 방법의 장점과 정밀하게 평가될 수 있다는 정량적인 방법의 장점을 모두 갖출 수 있다. 이러한 통합된 위험성 평가방법을 적용하고 자동화한 ASCA(Automated System for Hazard Screening & Analysis)라는 S/W를 개발하여 실제 공정에 적용하였다. 본 연구에서는 방향족 긍정 중 H.T.U(Hydrotreating Unit)에 대하여 ASCA를 적용하여 각 장치의 상대 순위를 알아보고 D-101이라는 저장탱크에서 단열 실패로 온도 상승이 일어난 경우의 장치고장으로 인한 변수 이상과 발생 가능한 사고의 영향을 알아보았다. 이러한 통합 위험성 평가 시스템을 화학공장에 적용하여 봄으로써 사고 시나리오를 세워서 사고에 대한 비상사태를 대처할 수 있는 능력을 키울 수 있으며 사고를 예방할 수 있을 것이다.

• 수산해양기술연구
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• 제51권2호
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• pp.188-194
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• 2015

The powered purse seine fishery is an important fishery accounting for 19.4% of adjacent water fishery production in Korea, and the commercial fishing is associated with high rate of fatal and non-fatal occupational injury. The hazard analysis for the fishermen's safety of offshore large powered purse seiner was conducted to serve as a basic data for improving the healthy and safe working environment of fishermen using fishermen's occupational accidents of the national federation of fisheries cooperatives (NFFC) in 2013 (n=583). As a result, the occupational accident occurrence rate of this fishery was 182.6‰ in all industries 30.9 times the rate of that. In addition, death and missing rate was found to have a very serious level management to 25.1‰ in all industries of death of 17.5 times. The accident occurred in 72.3 to 85.8% was happened at sea. The others, slipping and struck by object etc occurred more frequently in order in the frequency of accident occurrence pattern. However, the occurrence rate of death and missing did not match the frequency of accident pattern. In other words, slipping occurred frequently higher while death and missing risk was not high. And the contact with fishing gear and fall in the waters was low while death and missing risk was high. The results are expected to contribute for identification and assessment of safety hazard occurred in offshore large powered purse seiners.

• 한국안전학회지
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• 제27권5호
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• pp.77-87
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• 2012

Compared to a batch reactor, where all reactants are initially charged to the reactor, the semi-batch reactor presents serious advantages. The feed of at least one of the reactants provides an additional way of controlling the reaction course, which represents a safety factor and increases the constancy of the product quality. The aim of this study was to investigate the characteristics of thermal hazard such as a feed time, catalysis concentration and solvent concentration in methylthioisocyanate(MTI) synthesis reaction process. The experiments were carried out by the Multimax reactor system and Accelerating rate calorimeter(ARC). The MTI synthesis reaction process has many reaction factors and complicated reaction mechanism of multiphase reaction. Through this study, we can use as a tool for assessment of thermal hazard of other reaction processes by applying experiment method provided.

• Nuclear Engineering and Technology
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• 제47권1호
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• pp.59-65
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• 2015

Background: After the Fukushima accident, the importance of hazard analysis for extreme external events was raised. Methods: To analyze typhoon-induced hazards, which are one of the significant disasters of East Asian countries, a statistical analysis using the extreme value theory, which is a method for estimating the annual exceedance frequency of a rare event, was conducted for an estimation of the occurrence intervals or hazard levels. For the four meteorological variables, maximum wind speed, instantaneous wind speed, hourly precipitation, and daily precipitation, the parameters of the predictive extreme value theory models were estimated. Results: The 100-year return levels for each variable were predicted using the developed models and compared with previously reported values. It was also found that there exist significant long-term climate changes of wind speed and precipitation. Conclusion: A fragility analysis should be conducted to ensure the safety levels of a nuclear power plant for high levels of wind speed and precipitation, which exceed the results of a previous analysis.