Mitä räjähdyssuojattu taso ABC tarkoittaa

The “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).

Kuntoluokka	Kaasuluokitus	Edustavia kaasuja	Pienin sytytyksen kipinäenergia
Kaivoksen alla	minä	Metaani	0.280mJ
Tehtaat kaivoksen ulkopuolella	IIA	Propaani	0.180mJ
	IIB	Etyleeni	0.060mJ
	IIC	Vety	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, asetyleeni, hiilidisulfidi, ethyl nitrate, and water gas. Those in the IIB category encompass ethylene, coke oven gas, propyne, ja vety sulfide. The IIA classification includes gases such as methane, ethane, bentseeni, ja diesel.