ໄດ້ “abc” represents gas classifications, categorized into three levels—IIA, IIB, and IIC—according to the maximum experimental safe gap (MESG) or the minimum igniting current (MIC).
ປະເພດເງື່ອນໄຂ | ການຈັດປະເພດອາຍແກັສ | ທາດອາຍຜິດທີ່ເປັນຕົວແທນ | ພະລັງງານປະກາຍໄຟໄຫມ້ຕໍາ່ສຸດທີ່ |
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ພາຍໃຕ້ການຂຸດຄົ້ນບໍ່ແຮ່ | I | ເມເທນ | 0.280mJ |
ໂຮງງານນອກບໍ່ແຮ່ | IIA | ໂປຣຕີນ | 0.180mJ |
IIB | ເອທີລີນ | 0.060mJ | |
IIC | ໄຮໂດຣເຈນ | 0.019mJ |
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, acetylene, ກາກບອນ disulfide, ethyl nitrate, and water gas. Those in the IIB category encompass ethylene, coke oven gas, propyne, ແລະ ໄຮໂດເຈນ sulfide. The IIA classification includes gases such as methane, ethane, ເບນຊິນ, ແລະ ກາຊວນ.