• 조명전기설비학회논문지
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• 제20권6호
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• pp.63-68
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• 2006

22,900[V] 전압에서 발생하는 감전사고를 살펴보기 위하여 최근의 감전사고에 대한 통계자료를 분석하였다. 22,900[V] 전압의 감전사고의 메커니즘을 실증하기 위해서 분석 결과에 근거하여 모의 감전사고 실험을 수행하였다. 실험에서는 여러 가지 상황에서 모의된 감전사고의 위험성을 정량적으로 분석하기 위하여 인체모형에 흐르는 전류를 측정하였다. 실험결과 감전 상황과 관계없이 일단 감전사고가 발생하면 인체에 치명적인 것으로 밝혀졌다.

• 한국안전학회지
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• 제29권3호
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• pp.28-33
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• 2014

Regarding the characteristics of fatal electric shock accident during the past 10 years, fatalities occurred more frequently in July & August, and AM 10-12 PM & 14-16. Also, the electric shock accident is occurred more frequently in the age group from 30 to 40. Especially, the fatal electric shock accident in construction industry covered more than half of total industry. Therefore, it is strongly requested for the protection technology of an electric shock from the low voltage electric path, grounding method and workers. The aim of this study is to propose the policy about the equipment performance standards and/or worker's safety standards to revise the standards for preventing electric shock accidents on safety workings.

• 한국안전학회지
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• 제33권2호
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• pp.14-20
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• 2018

In this study, we analyze the current status of major disasters in distribution works and propose safety measures through the distribution live-line work method and electric shock risk assessment. The result of analyzing the ratio of electric shocks to the occurrence of industrial accidents in the recent 13 years shows that the death rate is higher than other industries, especially the construction industry occupying most of the disaster, and it is higher than the collapse disaster. We analyze statistic data of 101 victims selected as core words of live work, distribution line, pole and 22.9 kV in the investigation report of major accident of electric shock fatal from 2001 to 2014. The safety measure was established through the risk assessment of the distribution method using the standard model of the risk assessment based on the results of electric shock analysis on the distribution line. In order to prevent the electric shock accident which is recently being discussed, the risk assessment procedure were carried out in the above-mentioned 22.9kV special high voltage live-line operation method. We derived the risk reduction plan for the distribution line from the results of the major accidents statistic and demonstration of the line works.

• 한국방재학회 논문집
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• 제7권5호
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• pp.111-118
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• 2007

최근에 들어와 가로등에 의한 감전사고가 지속적으로 발생하고 있다. 특히 집중호우로 인해 가로등이 침수될 경우 누전에 의한 감전 사고는 매우 높다. 전기감전사고가 발생할 경우 사고전압을 분석해 보면 주로 220V의 저압시설물에서 발생되고 있으나 이에 대한 위험성을 충분히 인식하지 못하고 있는 실정이다. 가로등 시설물의 사용전압 220V는 주로 일반인이 쉽게 접촉할 수 있는 도로변에 시설되어 있기 때문에 감전사고의 위험성은 매우 높은 편이다. 그러나 가로등 침수로 인해 누전이 발생했을 경우 누전체에서의 거리변화에 따른 수중전위분포가 인체에 미치는 영향을 연구하는 사례는 미약한 실정이다. 본 논문에서는 수중에서 누전이 발생했을 경우에 인체에 미치는 영향과 수중전위분포를 분석하고 수중에서 누전체와의 거리 및 깊이에 따른 변화가 어떻게 인체에 영향을 주는지 실험을 통하여 감전경로와 감전메카니즘을 비교 분석하고자 한다.

• 한국안전학회지
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• 제4권1호
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• pp.83-90
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• 1989

Recently, due to the increase of 220V distribution lines and equipments preventive measures to cope with several kinds of electric accidents is revealed as an urgent problem. This study investigates the following matters; the cause and present condition of e1ectric shock accident, the influence of electric shock on human body, the safety limit of electric shock, the method of distribution voltage, the insulation of electrical load apparatus, the teachnics of electric shock prevention and foreign materials concerned with this subject etc. This paper present the fundamental cause of electric shock and syntbetic preventive counter measure of electric shock, too.

• 한국안전학회지
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• 제24권6호
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• pp.32-38
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• 2009

According to the statistics from the Ministry of labor, 70~80 people died by work-related electric shock accidents in the workplace and this number is about 10~20 times higher than those of the foreign countries such as Japan and the United Kingdom in frequencies and rates per 100,000. The electrocution deaths had decreased from several hundred in 1990s to 67 in 2002, since then there has been little change over the last 5 years. To reduce this number of the electrocution death, it is necessary to analyze the sources of the accidents and to implement the suitable measures for preventing the similar accidents from occurring. But there is not any consensus standard method or procedures for accident investigation yet. And the results solely depend on the ability of the investigator. Because of the demand of eliminating technical barrier for free trading, the IEC 60364 is adopted as a regulation for low voltage electrical installations in Korea. The facilities designed and constructed by IEC 60364 are increasing. The facilities by IEC 60364 have different features in comparison with the facilities by Korea eletro technical regulation, and these features combined with parameters of electric shock accident can greatly affect the consequences of the electric accidents. The accident analysis program for electric shock injuries in Terra Neutral(TN) and Terra Terra(TT) system was developed in this paper, which was based on KOSHA Electric Shock Analysis Program(ESAP).

• 전기학회논문지
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• 제66권8호
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• pp.1303-1308
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• 2017

The underground electricity distributions are significantly increased because of the urbanization accompanied by rural area developments. However, it has also been increased the safety accidents such as an electric shock around the handhole where the underground cables are connected to each other. This paper provides the base materials on the necessity to amend the installation regulation for securing the insulation and structure strength of handholds using the cast iron or fiberglass reinforced plastic. Article 137 in the judgement regulation for the Korea electro-technical regulation which is one of the installation regulations for handhole is amended and announced in 2017 by being based on the materials in this paper. It is expected to continually reduce the electric shock occurrence around handhole by considering the amended installation regulation.

• 한국안전학회지
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• 제29권4호
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• pp.54-60
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• 2014

This paper describes electric shock accidents on a 4.16 kV class circuit breaker for power plant. Electric shock accidents mostly involve damage of human life, in comparison with electrical fire, rate of human death tend to be higher in electric shock accidents. Specially, in a high voltage facilities rate of human death comprised about 43.7% by electric shock accidents. If electric shock accidents happen in a 4.16 kV class circuit breaker for power plant, then the power plant discontinue power production. Electric shock accidents in a power plant have a great ripple effect such as an electric power shortage. In this paper, we analyzed electric shock accidents on a 4.16 kV class circuit breaker for power plant. From the analysis results, we confirmed a cause of electric shock accidents on a 4.16 kV class circuit breaker, it happened by defect of interlock equipment or occurrence of breakdown between first feeder contactor and shielding plate. In order to reduce electric shock accidents on a 4.16 kV class circuit breaker, the power plant should consider improvement of interlock equipment and insulation of feeder contactor in circuit breaker.

• 한국안전학회지
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• 제29권2호
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• pp.7-11
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• 2014

The electric shock victims were predominantly male, and more than half of the victims were found in companies with less than five employees in terms of the scale of company, and also more than half of victims had less than one month of experience for work experience. Considering the category of industry, more than half of the victims were engaged in construction, and considering the subcategory of industries, more than 60% of electric shock victims were found in building and other construction works. This study intended to conduct an in-depth analysis on the cause of electric shock accidents to provide basic data for policy proposing taking into considering the characteristics such as the electric shock path, low voltage, grounding and protection of workers. Also this study conducted an in-depth analysis of electric shock accidents for the past eleven years taking into account the necessity of a long-term plan.

• 한국안전학회지
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• 제32권2호
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• pp.21-26
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• 2017

According to the data of Korea Occupational Safety and Health Agency, electric shock accidents during recent 11 years exceeded more than 60% in architecture/other and construction work, the countermeasures for safety are required in the harsh environment of a construction site where moving electric machines and equipments are widely used. The establishment of countermeasure for insulation degradation and defect is required, in consideration of increasing trend for accidents caused by defective insulation among low voltage electrical installation each year. The aim of this study is to propose the policy about portable electrical tool standards and/or worker's safety standards for preventing electric shock accidents on safety workings, and is to develop the technology and the safety device to prevent electric shock for accident prevention reduction through experiments. It obtained the followings through this study; statistical data analysis of late about 10 years of electric shock-related industrial accidents analysis and portable electric tools; safety device development of 'device for testing continuous grounding and power shut-down' to prevent electric shock from portable electric tools. Furthermore, developed results and proposal in this study will help to prevent the electric shock accidents from portable electric tools and will be expected the utilization of policy formulation, educational data and field supplement of the safety device, and etc.