Alumina and aluminum production and processing (NAICS 33131): average TRIR and DART
These are the 2024 private-industry incidence rates from the U.S. Bureau of Labor Statistics, per 100 full-time-equivalent workers. Prequalification forms often ask whether your TRIR and DART are at or below these numbers.
Other recordable cases: 0.9. "Not published" means the data does not meet BLS publication guidelines.
What this means for your prequal form
Worked example: a company in this industry with 100,000 hours worked in a year (about 50 full-time employees) would match the industry average at 1.3 recordable cases. With 400,000 hours (about 200 employees) the figure is 5.2.
TRIR = recordable cases × 200,000 ÷ hours worked. DART = (days-away cases + restricted/transfer cases) × 200,000 ÷ hours worked. Use your OSHA 300A totals for each calendar year.
Parent industry: Alumina and aluminum production and processing (NAICS 3313), TRC 2.6, DART 1.7.
Detailed industries under NAICS 33131
| NAICS | Industry | TRC | DART |
|---|---|---|---|
| 331313 | Alumina refining and primary aluminum production | 2.1 | 1.3 |
| 331314 | Secondary smelting and alloying of aluminum | 2.9 | 2.0 |
| 331315 | Aluminum sheet, plate, and foil manufacturing | 1.5 | 0.8 |
| 331318 | Other aluminum rolling, drawing, and extruding | 3.4 | 2.4 |
Source: BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024). NAICS 2017 codes as published by BLS.