The Development of the Analysis Program for the Electric Shock Accidents Occurred in the TN and TT System

TN 및 TT 계통에서의 감전사고 분석 프로그램 개발

  • Lee, Seok-Won (Occupational Safety and Health Research Institute, KOSHA) ;
  • Ryu, Bo-Hyuk (Occupational Safety and Health Research Institute, KOSHA) ;
  • Kim, Hyung-Seok (Occupational Safety and Health Research Institute, KOSHA) ;
  • Jung, Won-Jae (Occupational Safety and Health Research Institute, KOSHA)
  • 이석원 (한국산업안전보건공단 산업안전보건연구원) ;
  • 류보혁 (한국산업안전보건공단 산업안전보건연구원) ;
  • 김형석 (한국산업안전보건공단 산업안전보건연구원) ;
  • 정원제 (한국산업안전보건공단 산업안전보건연구원)
  • Published : 2009.12.31


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).


  1. 류보혁 등 5명, 'KOSHA-ESAP(Electric Shock Analysis Program)개발 연구', 산업안전보건연구원, 2007
  2. 平成19年における労働災害発生状況, 일본 후생노동성
  3. B.D. Jenkins, 'Touch voltages in electrical installations', blackwell, pp. 128-129, 1993
  4. IEC 60364-1 2005, Low-voltage electrical installations- Part1: Fundamental principles, assessment of general characteristics, definitions
  5. KS C IEC 60479-1 2005, 인체와 가축에 대한 전류의 영향 - 제 1부 일반적인 양상
  6. 산업재해현황통계자료('00-'07), 노동부
  7. Statistics of Fatal Injuries '06/'07, 영국 HSE