Ferrous metal foundries (NAICS 33151): 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: 2.6. "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 2.8 recordable cases. With 400,000 hours (about 200 employees) the figure is 11.2.
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: Foundries (NAICS 3315), TRC 5.1, DART 2.9.
Detailed industries under NAICS 33151
| NAICS | Industry | TRC | DART |
|---|---|---|---|
| 331511 | Iron foundries | 5.5 | 3.0 |
| 331512 | Steel investment foundries | 4.0 | 2.4 |
| 331513 | Steel foundries (except investment) | 7.7 | 3.6 |
Source: BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024). NAICS 2017 codes as published by BLS.