Section 408.11447. Pneumatic conveyors.

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(1) A pneumatic conveyor shall be designed so that doors to pressure vessels cannot be opened when there is a positive internal pressure.

(2)   A gasket holding line pressures shall be shielded to prevent a gasket leak from projecting the conveyed material into a work area if the material would cause a hazard.

(3)   A receiver or storage bin shall be equipped with full bin indicators or controls to prevent overfilling, if overfilling will create a hazard.

(4)     A pneumatic conveyor carrying oxidizable materials shall be designed for hazards, such as but not limited to explosion, fire or corrosion.

(5)   A pneumatic conveyor serving an area containing contaminated air shall be designed so that the contaminated air cannot be transported to another area.

History: 1979 AC.

                    
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