Transformers, reactor, manufacturing · California

Delta Star INC

San Carlos, CA · ~228 workers · 4 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
8.1
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Delta Star INC runs at 246% of its industry's injury rate - far more dangerous than the typical Transformers, reactor, manufacturing workplace, earning a grade F.

Delta Star INC: 8.1 TCR = 246% of Transformers, reactor, manufacturing BLS 3.3 · 4y Form 300A (see methodology below)

Delta Star INC safety composite

Delta Star INC scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 1%), 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).

F

16/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 8.13 per 100 workers

Safer than 8% of industry peers

DART rate
F 11.53 per 100 workers

Safer than 1% of industry peers

Fatalities
D 0

Safer than 51% 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%).

Rising injury rate

Delta Star INC: 5.4 → 11.9 TCR

Peak year 2024 @ 11.9 TCR · DART/TCR 1.42× in 2024

Delta Star INC's TCR rose 6.5 from 5.4 in 2019 to 11.9 in 2024. In 2024, DART was 1.42× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 335311 · San Carlos, CA ABOVE-IND · MID

Grade F · TCR 8.1 · 246% of ind

  • DART 11.5 DART
  • RANK #6/8
  • PHOTO Howard Industries In…
  • BOOK 4y book
  • INJ 79 inj
  • SIZE ~228 FTE

Nearest TCR peer: Howard Industries Inc. (Substation) (0.1 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

Delta Star INC in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Delta Star INC averages 8.1 TCR (246% of the Transformers, reactor, manufacturing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Delta Star INC TCR series: 2019=5.4 · 2020=5.4 · 2021=9.9 · 2024=11.9 · BLS 3.3

Where Delta Star INC falls in its industry

141 Transformers, reactor, manufac establishments

Safer than 8% of graded establishments in this industry, whose median TCR is 2.6.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #6 safest of 8 Transformers, reactor, manufac employers in California.

Delta Star INC (228 employees, TCR 8.1) among 29 same-industry peers, split at the industry median of 120 employees and a TCR of 2.6 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 05001,0001,5002,0002,500 0246810 Average employees Total Case Rate Delta Star INC
Delta Star INC (228 employees, TCR 8.1) among 29 same-industry peers, split at the industry median of 120 employees and a TCR of 2.6

Delta Star INC has more employees than the Transformers, reactor, manufacturing median and a higher injury rate than the industry's median TCR of 2.6. 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 11.9 11.5 33 1 0
2021 9.9 9.9 21 0 0
2020 5.4 5.4 12 0 0
2019 5.4 5.0 13 1 0

OSHA ITA peer cross-reference

Establishment peer ledger

335311 · CA · San Carlos

141 Transformers, reactor, manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 57 employers in San Carlos, 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 Howard Industries Inc. (Substation) 8.1 TCR
NAICS-TCR Amran Instrument Transformers 8.3 TCR
NAICS-TCR Northeast Power Systems 7.9 TCR
NAICS-TCR ERMCO 7.8 TCR
STATE-SIZE Harris Fresh 228 FTE
STATE-SIZE Greencraig B - Environmental Analysis Lab - 01 228 FTE
STATE-SIZE Yukon Plastering, Inc. 228 FTE
STATE-SIZE The Inside Source, Inc. CA 228 FTE
CITY-NEAR Rudolph and Sletten 686 FTE
CITY-NEAR Sutter Bay Medical Foundation (30507) 534 FTE
CITY-NEAR Palo Alto Medical Foundation (378-10145) 387 FTE
CITY-NEAR San Mateo County Transit District 293 FTE
NAT-TCR Columbus Street Terminal 8.1 TCR
NAT-TCR Crowne Plaza Seattle Airport 8.1 TCR
NAT-TCR WellSpan York Hospital 8.1 TCR
NAT-TCR Mid-Kansas Division 8.1 TCR
NAT-SIZE E&K of Denver, Inc. 228 FTE
NAT-SIZE Southwell Medical Center 228 FTE
NAT-SIZE Norwegian Christian Home & Health Center 228 FTE
NAT-SIZE Fire Mountain Gems and Beads 228 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.