Journal of the Korea Safety Management & Science (대한안전경영과학회지)

Korea Safety Management & Science (대한안전경영과학회)
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A Study on Complementary Method for Hazardous Area Extent by IEC 60079-10-1 Edition 2.0

IEC 60079-10-1 edition 2.0에 의한 방폭 설계 한계점 보완 방법에 관한 연구

  • Choi, Jae-Young (Department of Health and Safety Convergence Science, Korea University) ;
  • Byeon, Sang-Hoon (Department of Health and Safety Convergence Science, Korea University)
  • 최재영 (고려대학교 보건안전융합과학과) ;
  • 변상훈 (고려대학교 보건안전융합과학과)
  • Received : 2020.05.11
  • Accepted : 2020.06.25
  • Published : 2020.06.30
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Abstract

IEC 60079-10-1 edition 2.0, the global standard for hazardous area classification, was newly revised in 2015. There are many differences compared to the previous edition 1.0 version, first released in 2008, so it has caused confusion in the industry. In case of edition 1.0, the hazardous area extent can be derived through the mathematical formula, but in case of edition 2.0, there was the problem that the exact hazardous area extent was not known because of the mathematical formula of the plot for applying the hazardous area extent was not presented. In this study, we converted the plot introduced in edition 2.0 to CAD format and derived the plot as the mathematical equations. Through this, we suggest the hazardous area extent formula of three states (heavy gas, diffusive, jet). As the IEC committee did not provide the mathematical formula of the hazardous area extent according to the release characteristic, it is impossible to apply the exact hazardous area extent. In this study, a mathematical approach was derived for the plot introduced in edition 2.0, which can reduce the confusion of the applying hazardous area extent.

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References

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