Abrasive BlastingChapter 296-818, WAC |
Effective Date: 09/01/06 |
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Helpful Tool: Blast Cleaning Enclosures and Recommended Inward Air Velocities |
This helpful tool provides examples of blast cleaning enclosures and the recommended air velocities used for abrasive blasting operations.
| Examples of Blast Cleaning Enclosures |
Recommended Air Velocities
in Feet Per Minute (fpm) |
| Abrasive blasting cabinets | At least 500 fpm at the hand openings |
| Blast cleaning rooms | At least 300 fpm with well baffled air inlets |
| Rotary blast cleaning tables | 200-250 fpm at the access opening |
| Abrasive separators Bucket elevators Other accessory abrasive handling equipment, including blast cleaning drums and barrels |
200-250 fpm at all openings |
