Environmental Assessment
Table 8 - Grit Blasting Sources
|
Medium Unit |
Description |
Control Device |
Operating Schedule |
|
Wheelabrator blaster |
Steel shot |
Large American Wheelabrator baghouse outside of bldg. 90-2, installed on NW side (out) of bldg.; 3,720 cfm, 80 dust collection bags. Exhaust vent is 12 inches by 12 inches and 13 feet 2 inches from the ground. Bags changed/unit cleaned once since prior to 1966. |
2 hours/day, 1 day/month, 12 months/year |
|
Steel abrasive tumbler |
Steel shot |
Small American Wheelabrator baghouse outside of bldg. 90-2; 3,310 cfm; 48 dust collection bags. Exhaust pipe is 8 inches diameter and 17 feet from the ground. |
2 hours/day, 1 day/month, 12 months/year |
|
Silverado sand blaster |
Sand |
25 bag baghouse inside bldg. 90-2; 600 cfm. Dust collector does not vent to the atmosphere. |
2 hours/day, 1 day/month, 12 months/year |
|
Glass bead tumbler |
Glass beads |
Vents to cyclone which vents to baghouse inside bldg. 90-2; 900 cfm; 58 dust collection bags. Dust collector is vented to the atmosphere. |
Not in use |