Тхе “abc” represents gas classifications, categorized into three levels—IIA, ИИБ, and IIC—according to the maximum experimental safe gap (MESG) or the minimum igniting current (MIC).
Категорија стања | Класификација гасова | Репрезентативни гасови | Минимална енергија искре за паљење |
---|---|---|---|
Под рудником | И | Метан | 0.280мЈ |
Фабрике изван рудника | ИИА | Пропан | 0.180мЈ |
ИИБ | Етилен | 0.060мЈ | |
ИИЦ | Водоник | 0.019мЈ |
Of these, the IIC classification is deemed the most hazardous, with IIB and IIA following in decreasing order of risk. Gases falling under the IIC classification include hydrogen, ацетилен, carbon disulfide, ethyl nitrate, and water gas. Those in the IIB category encompass ethylene, coke oven gas, propyne, и водоник sulfide. The IIA classification includes gases such as methane, ethane, бензен, и diesel.