Fire sprinkler system installation · California
Thorpe Design Inc
Brentwood, CA · ~182 workers · 2 years of OSHA Injury Tracking Application data.
- F
- Failing Safety Record
- 5.9
- Avg TCR
- 2.8
- Industry avg
- 0
- Fatalities
The verdict
Thorpe Design Inc runs at 211% of its industry's injury rate - far more dangerous than the typical Fire sprinkler system installation workplace, earning a grade F.
- F
- Failing Safety Record
- 5.9
- avg TCR · per 100 workers
- 2.8
- industry benchmark (BLS)
- 28
- recordable injuries tracked
Grade compares Thorpe Design Inc's OSHA Total Case Rate of 5.9 to the Fire sprinkler system installation BLS benchmark of 2.8 (211% of benchmark) across 2 years of Form 300A filings (2016–2024). <a href="/methodology">See methodology</a> for reporting-limitation caveats.
Injury rate over time
Thorpe Design Inc's yearly Total Case Rate, against the 2.8 industry benchmark.
Where Thorpe Design Inc falls in its industry
6,536 Fire sprinkler system installa establishmentsSafer than 25% of graded establishments in this industry, whose median TCR is 2.8.
Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #460 safest of 659 Fire sprinkler system installa employers in California.
Trend analysis for Thorpe Design Inc
Between 2018 and 2023, Thorpe Design Inc's Total Case Rate improved from 6.9 to 5.0 recordable injuries per 100 full-time workers, a 28% decrease across 5 years of OSHA reporting.
The safest year on record was 2023, at a TCR of 5.0, while 2018 saw the highest rate, at 6.9, a spread of 1.9 points between the best and worst reporting years. That's a comparatively narrow spread, suggesting a fairly consistent safety record across the 2 years with a usable rate on file, rather than one outlier year skewing the multi-year average.
Summed across those 2 reporting years, Thorpe Design Inc recorded 28 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 2-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.
Verify This Employer with OSHA
The 28 injuries shown on this page for Thorpe Design Inc are sourced from its own 2 years of mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.
Verify on OSHA Establishment SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 238220 - Fire sprinkler system installation.
DART Rate, Transparent Calculation (2023)
What is the DART rate formula?
DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.
6 DART incidents × 200,000 ÷ 403,757 hours worked = 2.97 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Thorpe Design Inc (this establishment) | 5.91 | OSHA ITA Form 300A, 2-year avg |
| Mechanical contractors industry avg | 2.80 | BLS IIF, NAICS 238220 |
| California state avg (all industries) | 5.64 | OSHA ITA, state-level rollup |
Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program
Reportable Incident Timeline
Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Thorpe Design Inc to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.
- 2023: 10 reportable incidents · 10 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2018: 18 reportable incidents · 18 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2023 | 5.0 | 3.0 | 10 | 0 | 0 |
| 2018 | 6.9 | 3.0 | 18 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Thorpe Design Inc's reported OSHA injury record versus its Fire sprinkler system installation peers, not a verdict on whether any single site is safe today.
- At 211% of the Fire sprinkler system installation benchmark, Thorpe Design Inc reports more injuries than typical peers, ask specifically how the employer is reducing them. Know your rights
- Judge this record against the wider Fire sprinkler system installation sector, where injury rates vary widely, before comparing it in isolation. See the industry
- Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another
Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.
Frequently Asked Questions
What is Thorpe Design Inc's safety grade?
How many injuries has Thorpe Design Inc reported?
Similar Employers
Matched by safety record across the industry, by workforce size within California, and by nearby establishments in Brentwood - a different peer set than the category browse links below.
Similar TCR (~5.9)
Similar size (~182 workers)
Read our methodology - how this data is sourced, computed, and verified.
Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.