Rule 7443. Air-moving equipment exposed to hazardous levels of flammable gases, flammable vapors, or combustible dust must be approved as intrinsically safe.
Mich. Admin. Code R. 408.17443
Rule 7443. Air-moving equipment exposed to hazardous levels of flammable gases, flammable vapors, or combustible dust must be approved as intrinsically safe.
Mich. Admin. Code R. 408.17443