Shenhai e fakamoʻoni fakaʻauha
ʻOku ʻikai fakafaikehekeheʻi ʻa e ngaahi naunau fakatuʻutamaki ko e kalasi A pe B ka ʻi honau ngaahi fakatuʻutamaki, hange ko e ngaahi meʻa fakatuʻutamaki, kasa kona, mo combustible fluids.
ʻOku delineated ʻa e fakafaʻahinga ʻo e kalasi A mo e B ʻi he GB50160-2008 “Petrochemical e ngaahi tuʻunga malu ʻo e afi.”
Pentane, mo ha konga ʻo e 40 ° c mo ha fakangatangata maʻulalo ange ʻo e 1.7%, ʻOku fakafaʻahinga ia ko ha kalasi ko ha kemikale ʻoku tuʻu fakatuʻutamaki.