Шэньхай Взрывозащищенный
The “abc” represents gas classifications, categorized into three levels—IIA, МИБ, and IIC—according to the maximum experimental safe gap (MESG) or the minimum igniting current (MIC).
| Категория состояния | Классификация газа | Представительные газы | Минимальная энергия искры зажигания |
|---|---|---|---|
| Под шахтой | я | Метан | 0.280мДж |
| Заводы за пределами шахты | ИМА | Пропан | 0.180мДж |
| МИБ | Этилен | 0.060мДж | |
| ИИК | Водород | 0.019мДж |
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 водород сульфид. The IIA classification includes gases such as methane, этан, бензол, и diesel.