游离SiO2
含量(M)
体力劳
动强度
粉尘的职业接触比值权重数(WB)
<1
~2
~4
~6
~8
~16
>16
M<10
Ⅰ
0
Ⅰ
Ⅰ
Ⅰ
Ⅱ
Ⅱ
Ⅲ
Ⅱ
0
Ⅰ
Ⅰ
Ⅱ
Ⅱ
Ⅱ~Ⅲ
Ⅲ
Ⅲ
0
Ⅰ
Ⅰ~Ⅱ
Ⅱ
Ⅱ
Ⅲ
Ⅲ
Ⅳ
0
Ⅰ
Ⅰ~Ⅱ
Ⅱ
Ⅱ~Ⅲ
Ⅲ
Ⅲ
10≤M≤50
Ⅰ
0
Ⅰ
Ⅰ~Ⅱ
Ⅱ
Ⅱ
Ⅲ
Ⅲ
Ⅱ
0
Ⅰ
Ⅱ
Ⅱ~Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
0
Ⅰ
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅳ
0
Ⅰ
Ⅱ~Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
50<M≤80
Ⅰ
0
Ⅰ
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅱ
0
Ⅰ
Ⅱ~Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
0
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅳ
0
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
M>80
Ⅰ
0
Ⅰ
Ⅱ~Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅱ
0
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
0
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅳ
0
Ⅱ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
Ⅲ
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