Electric power generation, nuclear · Pennsylvania
Three Mile Island Nucler Power Station
Middletown, PA · ~372 workers · 9 years of OSHA Injury Tracking Application data.
- A
- Excellent Safety Record
- 0.5
- Avg TCR
- 1.2
- Industry avg
- 0
- Fatalities
The verdict
Three Mile Island Nucler Power Station runs at 41% of its industry's injury rate - far safer than the typical Electric power generation, nuclear workplace, earning a grade A.
Three Mile Island Nucler Power Station: 0.5 TCR = 41% of Electric power generation, nuclear BLS 1.2 · 9y Form 300A (see methodology below)
Three Mile Island Nucler Power Station safety composite
Three Mile Island Nucler Power Station scores strongest on dart rate (safer than 66% of same-industry peers) and weakest on total case rate (tcr) (safer than 18%), 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).
43/100
Percentile-weighted across 3 of 3 measures
- Total Case Rate (TCR)
- F 0.49 per 100 workers
Safer than 18% of industry peers
- DART rate
- C 0 per 100 workers
Safer than 66% 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%).
Rising injury rate
Three Mile Island Nucler Power Station: 0.2 → 2.0 TCR
Peak year 2024 @ 2.0 TCR · DART/TCR 0× in 2024
Three Mile Island Nucler Power Station's TCR rose 1.8 from 0.2 in 2016 to 2.0 in 2024. In 2024, DART was 0× this establishment's average TCR (severity share of cases).
OSHA ITA Form 300A scorecard
Establishment book 221113 · Middletown, PA AT/BELOW-IND · MID
Grade A · TCR 0.5 · 41% of ind
- DART 0.0 DART
- RANK #8/8
- PHOTO Nextera PTN Turkey P…
- BOOK 9y book
- INJ 6 inj
- SIZE ~372 FTE
Nearest TCR peer: Nextera PTN Turkey Point (0.0 TCR gap)
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Three Mile Island Nucler Power Station in the TCR neighbourhood
Average Total Case Rate among this establishment and nearest same-industry peers
- This site
Three Mile Island Nucler Power Station
0.5 TCR
- Nextera PTN Tu
Nextera PTN Turkey Point
0.5 TCR
- Exelon Nuclear
Exelon Nuclear Services & Training Center (STC)
0.5 TCR
- Indian Point E
Indian Point Entergy Nuclear Operations Inc
0.5 TCR
- Monticello Tra
Monticello Training Center
0.5 TCR
What this shows Three Mile Island Nucler Power Station averages 0.5 TCR (41% of the Electric power generation, nuclear BLS benchmark).
Three Mile Island Nucler Power Station TCR series: 2016=0.2 · 2017=0.8 · 2018=0.3 · 2019=0.3 · 2020=0.3 · 2021=0.4 · 2022=0 · 2023=0 · 2024=2 · BLS 1.2
Where Three Mile Island Nucler Power Station falls in its industry
80 Electric power generation, nuc establishmentsSafer than 18% of graded establishments in this industry, whose median TCR is 0.2.
Narrower to Pennsylvania alone (the establishments it most directly competes with for workers and contracts): ranked #8 safest of 8 Electric power generation, nuc employers in Pennsylvania.
Three Mile Island Nucler Power Station has fewer employees than the Electric power generation, nuclear median and a higher injury rate than the industry's median TCR of 0.2. 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 | 2.0 | 0.0 | 0 | 2 | 0 |
| 2023 | 0.0 | 0.0 | 0 | 0 | 0 |
| 2022 | 0.0 | 0.0 | 0 | 0 | 0 |
| 2021 | 0.4 | 0.0 | 1 | 0 | 0 |
| 2020 | 0.3 | 0.0 | 0 | 1 | 0 |
| 2019 | 0.3 | 0.2 | 1 | 1 | 0 |
| 2018 | 0.3 | 0.0 | 0 | 2 | 0 |
| 2017 | 0.8 | 0.0 | 2 | 3 | 0 |
| 2016 | 0.2 | 0.2 | 2 | 0 | 0 |
OSHA ITA peer cross-reference
Establishment peer ledger
221113 · PA · Middletown
80 Electric power generation, nuclear employers nationwide with a credible TCR · 22,692 rated employers in Pennsylvania with headcount on file · 99 employers in Middletown, PA · 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 | Nextera PTN Turkey Point | 0.5 TCR |
| NAICS-TCR | Exelon Nuclear Services & Training Center (STC) | 0.5 TCR |
| NAICS-TCR | Indian Point Entergy Nuclear Operations Inc | 0.5 TCR |
| NAICS-TCR | Monticello Training Center | 0.5 TCR |
| STATE-SIZE | Jacobs Telecommunications | 372 FTE |
| STATE-SIZE | BEAVER PA | 372 FTE |
| STATE-SIZE | 2597 | 372 FTE |
| STATE-SIZE | 3738 | 372 FTE |
| CITY-NEAR | PATWN - EAST ZONE REGIONAL HUB | 1,864 FTE |
| CITY-NEAR | Phoenix Contact | 982 FTE |
| CITY-NEAR | 6458-ZEHR | 629 FTE |
| CITY-NEAR | NHS | 532 FTE |
| NAT-TCR | Dynalectric Oregon | 0.5 TCR |
| NAT-TCR | Jasper Seating Company Corporate Office | 0.5 TCR |
| NAT-TCR | Chevron Pipe Line Company - Houston | 0.5 TCR |
| NAT-TCR | Oceaneering International - Advanced Technologies Hanover | 0.5 TCR |
| NAT-SIZE | MEMS Headquarters | 372 FTE |
| NAT-SIZE | North Haven | 372 FTE |
| NAT-SIZE | Cumberland Heights Foundation, Inc. | 372 FTE |
| NAT-SIZE | American Integrated Services Inc. | 372 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.