Study on the application of flammable liquids of KS C IEC 60079-10-1:2015 Standard based on the flash points

This paper is written to suggest the guideline for the flash point of flammable liquids when the KS C IEC 60079-10-1:2015 standard is applied for the hazardous area classification. Flammable liquid is defined as “liquid capable of producing a flammable vapour under any foreseeable operating conditions” in the KS C IEC 60079-10-1:2015 standard and an example of the flammable liquid is shown as the liquid that is handled at temperatures close to or above its flash point. Therefore the relationship between flash points and flammable liquids is not clear. Occupational safety and health act in Korea, Ministry of Employment and Labor notification(No. 1993-19), NFPA 497, API RP 505 and EI 15 are reviewed to compare the flash points for the application of the hazardous area classification and the guideline for flash points is suggested.