History of the preventive programme from 1980 through 1998
| Year | Control type | Description of control |
|---|---|---|
| HEPA, high-efficiency particulate air; PPE, personal protective equipment. | ||
| Baseline status of facility at opening | ||
| 1980 | Engineering | Exhaust ventilation for powder handling |
| 1980 | Engineering | Enclosed, ventilated wet machining operations |
| 1980 | Engineering | On-site laundry and locker rooms |
| 1980 | Engineering | HEPA-filtered central vacuum system |
| 1980 | Administrative | Compressed air for cleaning and dry sweeping in production areas prohibited |
| 1980 | Administrative | Dry vacuuming and wet mopping performed at least weekly |
| 1980 | Administrative | End-of-shift showering and change of clothing required |
| 1980 | PPE | Facility uniforms (short-sleeved jumpsuits) used |
| 1980 | PPE | Half-face negative pressure respirators required for powder handling |
| Changes made before the 1992 survey | ||
| 1984 | Engineering | Enclosures added around some machines |
| 1985–6 | Engineering | Building expanded. Additional local exhaust ventilation added |
| 1988 | Administrative | Smoking, eating and drinking in production areas banned |
| Changes made between 1992 and 1998 surveys | ||
| 1993–5 | Engineering | Additional exhaust ventilation and enclosures added around machines |
| 1995 | Engineering | Locker rooms fully segregated (clean/dirty sides) |
| 1995 | Engineering | Water spray added over hamper to keep uniforms wet before laundering |
| 1998 | Administrative | Free-standing man-cooling (high-velocity) fans prohibited in production areas |