Primary metal manufacturing (NAICS 331): 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: 1.3. "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 1.6 recordable cases. With 400,000 hours (about 200 employees) the figure is 6.6.
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: Manufacturing (NAICS 31-33), TRC 2.7, DART 1.7.
Detailed industries under NAICS 331
| NAICS | Industry | TRC | DART |
|---|---|---|---|
| 3311 | Iron and steel mills and ferroalloy manufacturing | 1.9 | 1.3 |
| 3312 | Steel product manufacturing from purchased steel | 3.2 | 1.9 |
| 3313 | Alumina and aluminum production and processing | 2.6 | 1.7 |
| 3314 | Nonferrous metal (except aluminum) production and processing | 2.9 | 1.9 |
| 3315 | Foundries | 5.1 | 2.9 |
Source: BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024). NAICS 2017 codes as published by BLS.