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

최재영; 변상훈

doi:10.12812/ksms.2020.22.2.073

IEC 60079-10-1 edition 2.0에 의한 방폭 설계 한계점 보완 방법에 관한 연구
A Study on Complementary Method for Hazardous Area Extent by IEC 60079-10-1 Edition 2.0 원문보기

대한안전경영과학회지 = Journal of the Korea safety management & science, v.22 no.2, 2020년, pp.73 - 82

최재영 (고려대학교 보건안전융합과학과) , 변상훈 (고려대학교 보건안전융합과학과)

Abstract ▼ AI-Helper

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.

주제어

표/그림 (18)

그림 [Figure 1] Hazardous area extent by the release characteristic in IEC edition 2.0
표 Parameters of release rate in IEC edition 1.0
표 Assumption of hazardous area extent by considering safety margin
그림 [Figure 2] IEC edition 2.0 plot converted by CAD
그림 [Figure 3] IEC edition 2.0 plot's axis substituted by log scale
그림 [Figure 4] IEC edition 2.0 heavy gas plot
그림 [Figure 5] IEC edition 2.0 diffusive plot
그림 [Figure 6] IEC edition 2.0 jet release gas plot
표 Case study: characteristic of material by the release type
표 Case study: conclusion of the hazardous area extent from the suggested method to the conventional previous method
표 Case study: parameters for IEC calculation
그림 [Figure 7] Case study: heavy gas release
그림 [Figure 8] Case study: diffusive release
그림 [Figure 9] Case study: jet release
그림 [Figure 10] Error rate: heavy gas release
그림 [Figure 11] Error rate: diffusive release
그림 [Figure 12] Error rate: jet release
그림 [Figure 13] Big error rate about the hazardous area extent over 10 m

AI 본문요약
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제안 방법

In this study, equation was calculated based on two points close to the exact coordinates of the plot by converting the plot presented by IEC Code into CAD. Even if the safety margin is added in consideration of the incompleteness of the plot, it is considered that considering the margin of a certain %, for example 10%, in the hazardous area extent calculated in this way will contribute to a more reasonable calculation of the explosion radius.
0, the hazardous area extent may be interpreted differently according to the engineer, and it is impossible to accurately verify that any value is wrong. Therefore, this study aims to present the mathematical equation that applies heavy gas, diffusive, jet release plot as mathematical solution by making full use of plot given in edition 2.0. Equation provides a scientific basis for engineers by applying the hazardous area extent.

참고문헌 (11)

International Electrotechnical Commission(IEC)(2008), "IEC 60079-10-1 : Classification of areas - Explosive gas atmospheres (1.0 Ed.)." IEC International, Geneva.
International Electrotechnical Commission (IEC) (2015), "IEC 60079-10-1 : Classification of areas - Explosive gas atmospheres (2.0 Ed.)." IEC International, Geneva.
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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