Shenhai Kuphulika-Umboni
1. Zida zamagetsi zosiyanasiyana zimasankhidwa kutengera kuchuluka kwa chitetezo kuti zigwiritsidwe ntchito mumlengalenga wophulika wa gasi, zomwe zimagawidwa m'magawo: Zone 0, Zone 1, ndi Zone 2.
2. Gulu la gasi kapena nthunzi zophulika zosakaniza zimagwera m'magulu atatu: IIA, IIB, ndi IIC. Kugawika kumeneku kumachokera pa Maximum Experimental Safe Gap (MESG) kapena Minimum Ignition Current Ratio (MICR).
3. The kutentha gulu la kuyatsa sing'anga inayake lagawidwa m'magulu angapo. Izi zikuphatikizapo T1: pansi pa 450 ° C; T2: 300°C < T ≤ 450°C; T3: 200°C < T ≤300°C; T4: 135°C < T ≤200°C; T5: 100°C < T ≤ 135°C; T6: 85°C < T ≤ 100°C.