A Study on Hazards Assessment of Electrostatic Firing Explosion of Working Wears at LPG Stations in Korea

한국의 LPG 충전소에 있어서 작업복의 정전기에 의한 화재 및 폭발 위험성에 관한 연구

  • 조영두 (한국가스안전공사) ;
  • 구자혁 (국립 서울산업대학대학원 안전공학과) ;
  • 최광석 (국립 이바라키대학대학원 이공학연구과) ;
  • 서대원 (국립 서울산업대학대학원 안전공학과) ;
  • 정재희 (국립 서울산업대학대학원 안전공학과) ;
  • Published : 2000.12.01

Abstract

The electrostatic safety consciousness of safety manager were investigated through questionnaires sent to liquid petroleum gas stations in Korea. In addition, hazards of fire and explosion due to electrostatic on synthetic-polymer-wears and cotton-wears were estimated experimentally. The results of questionnaires indicate most workers wear their working clothes indiscreetly owing to lack of knowledge of preventing electrostatic hazards. The amounts of electrostatic charge generated in synthetic-polymer-wears were 1.79, 1.44 and 1.02 $\mu$C in winter, spring and autumn and summer, respectively. All these values exceed the limit of working wears of 0.60$\mu$C requested by Korea Standard(KS K-7807) for preventing electrostatic hazards, which means hazards may occur. While, the charge in cotton-wears were in the range of 0.42 to 0.52$\mu$C, which suggests that the cotton-wears investigated in this study have no problem of hazards. Therefore workers, visual and experiential education are necessary for elevating the standard of on electrostatics. It is also necessary to establish standards of wearing for preventing electrostatic hazards.