深海防爆
不同嘅易燃易爆環境對起重機嘅防爆分類提出咗不同嘅要求. 呢啲要求分為三大類:
| 條件類別 | 氣體分類 | 代表性氣體 | 最小點火火花能量 |
|---|---|---|---|
| 礦井下 | 我 | 甲烷 | 0.280兆焦耳 |
| 礦場外嘅工廠 | 國際投資協定 | 丙烷 | 0.180兆焦耳 |
| IIB公司 | 乙烯 | 0.060兆焦耳 | |
| IIC公司 | 氫 | 0.019兆焦耳 |
1. I類防爆起重機, 指定為Exd I;
2. II類工業防爆起重機, 指定為Exd IIB T4或Exd IIC T4;
3. Dust explosion-proof cranes, designated as DIP A21 TA T4;
Within Class II, explosion-proof cranes categorized as flameproof “d” 和 本質安全 “我” are classified into IIA, IIB公司, and IIC levels. Cranes with an IIB rating are appropriate for IIA environments, whereas cranes rated IIC are suitable for both IIA and IIB environments.