What Does Explosion-Proof Level ABC Mean

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.