Fashewar Shenhai-Hujja
1. An rarraba kayan aikin lantarki daban-daban dangane da matakan aminci don amfani a cikin yanayin iskar gas mai fashewa, waxanda suka kasu zuwa yankuna: Yanki 0, Yanki 1, da Zone 2.
2. Rarraba gas ko tururi m gaurayawan sun kasu kashi uku: IIA, IIB, da IIC. Wannan rarrabuwa an samo asali ne akan Matsakaicin Tazarar Amintaccen Gwaji (MESG) ko mafi ƙarancin ƙonewa na yanzu (MICR).
3. The zafin jiki An raba rukuni don kunna takamaiman matsakaici zuwa jeri da yawa. Waɗannan sun haɗa da T1: kasa da 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.