Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing · California
Thermal Structures Inc.
Corona, CA · ~416 workers · 4 years of OSHA Injury Tracking Application data.
- D
- Poor Safety Record
- 4.8
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Thermal Structures Inc. runs at 145% of its industry's injury rate - more dangerous than the typical Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing workplace, earning a grade D.
Thermal Structures Inc.: 4.8 TCR = 145% of Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing BLS 3.3 · 4y Form 300A (see methodology below)
Thermal Structures Inc. safety composite
Thermal Structures Inc. scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on dart rate (safer than 6%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).
18/100
Percentile-weighted across 3 of 3 measures
- Total Case Rate (TCR)
- F 4.79 per 100 workers
Safer than 9% of industry peers
- DART rate
- F 4.62 per 100 workers
Safer than 6% of industry peers
- Fatalities
- D 0
Safer than 50% of industry peers
Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).
TCR Δ
−1.1
2021→2024
Thermal Structures Inc. injury rate improved
Thermal Structures Inc.'s TCR fell 1.1 from 5.9 in 2021 to 4.8 in 2024. Peak filing year was 2021 at 5.9 TCR. In 2024, DART was 0.96× this establishment's average TCR (severity share of cases).
2021=5.9 · 2022=4.7 · 2023=3.7 · 2024=4.8
OSHA ITA Form 300A scorecard
Establishment book 336412 · Corona, CA ABOVE-IND · MID
Grade D · TCR 4.8 · 145% of ind
- DART 4.6 DART
- RANK #11/13
- PHOTO B&B Precise Products…
- BOOK 4y book
- INJ 77 inj
- SIZE ~416 FTE
Nearest TCR peer: B&B Precise Products, Inc. (0.0 TCR gap)
Read with this employer → · Industry book → · California employers → · Look up another →
Thermal Structures Inc. in the TCR neighbourhood
Average Total Case Rate among this establishment and nearest same-industry peers
- Hanwha Aerospa
Hanwha Aerospace USA - Newington
4.9 TCR
- This site
Thermal Structures Inc.
4.8 TCR
- B&B Precise Pr
B&B Precise Products, Inc.
4.8 TCR
- E B Airfoils,
E B Airfoils, LLC
4.8 TCR
- Building 4
Building 4
4.8 TCR
What this shows Thermal Structures Inc. averages 4.8 TCR (145% of the Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing BLS benchmark).
Thermal Structures Inc. TCR series: 2021=5.9 · 2022=4.7 · 2023=3.7 · 2024=4.8 · BLS 3.3
Where Thermal Structures Inc. falls in its industry
366 Aircraft engine and engine par establishmentsSafer than 9% of graded establishments in this industry, whose median TCR is 1.6.
Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #11 safest of 13 Aircraft engine and engine par employers in California.
Thermal Structures Inc. has more employees than the Aircraft engine and engine parts (except median and a higher injury rate than the industry's median TCR of 1.6. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2024 | 4.8 | 4.6 | 23 | 0 | 0 |
| 2023 | 3.7 | 3.3 | 16 | 1 | 0 |
| 2022 | 4.7 | 4.3 | 19 | 2 | 0 |
| 2021 | 5.9 | 5.6 | 19 | 1 | 0 |
OSHA ITA peer cross-reference
Establishment peer ledger
336412 · CA · Corona
366 Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 409 employers in Corona, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.
| Rel | Establishment | Metric |
|---|---|---|
| NAICS-TCR | B&B Precise Products, Inc. | 4.8 TCR |
| NAICS-TCR | E B Airfoils, LLC | 4.8 TCR |
| NAICS-TCR | Building 4 | 4.8 TCR |
| NAICS-TCR | Hanwha Aerospace USA - Newington | 4.9 TCR |
| STATE-SIZE | NC3 Systems | 416 FTE |
| STATE-SIZE | Erickson Framing CA LLC | 416 FTE |
| STATE-SIZE | Heritage One Door and Carpentry, LLC | 416 FTE |
| STATE-SIZE | NA-US-CA-Lathrop-Harlan Road | 416 FTE |
| CITY-NEAR | Monster Energy Company 2535 Anselmo Dr | 2,572 FTE |
| CITY-NEAR | Monster Energy Company | 2,388 FTE |
| CITY-NEAR | Monster Energy Company - Anselmo Dr, Corona | 2,335 FTE |
| CITY-NEAR | California Department of Transportation Facility 289 | 1,587 FTE |
| NAT-TCR | Store 1744 | 4.8 TCR |
| NAT-TCR | Sodexo at Fairview Unit J Coffee | 4.8 TCR |
| NAT-TCR | W-Brown Enterprises, INC | 4.8 TCR |
| NAT-TCR | Reno Vulcanizing Works | 4.8 TCR |
| NAT-SIZE | Brian's House Inc | 416 FTE |
| NAT-SIZE | Veolia WTS | 416 FTE |
| NAT-SIZE | 10220 Brooklyn | 416 FTE |
| NAT-SIZE | Brooklyn Center Ambulance | 416 FTE |
Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →
Read our methodology - how this data is sourced, computed, and verified.