---
license: cc-by-4.0
language:
  - en
size_categories:
  - n<1K
task_categories:
  - tabular-classification
  - text-retrieval
tags:
  - hse
  - ehs
  - occupational-safety
  - osha
  - trir
  - ltifr
  - dart
  - afr
  - severity-rate
  - safety-metrics
  - reference
pretty_name: HSE Incident Rate Formulas Reference
---

# HSE Incident Rate Formulas Reference

Reference dataset of the **7 standard occupational-safety incident-rate formulas** used worldwide:

| Metric | Multiplier | Authority | Jurisdiction |
|---|---|---|---|
| **TRIR** — OSHA Total Recordable Incident Rate | 200,000 | OSHA | United States |
| **LTIFR** — Lost Time Injury Frequency Rate | 1,000,000 | ILO, UK HSE | International (ILO/UK/GCC/AU) |
| **DART** — Days Away, Restricted, or Transferred Rate | 200,000 | OSHA | United States |
| **AFR** — Accident Frequency Rate | 1,000,000 | UK HSE | United Kingdom, GCC, generic |
| **Severity Rate** — Severity Rate (days lost per million hours) | 1,000,000 | ILO | International (ILO) |
| **TRIFR** — Total Recordable Injury Frequency Rate | 1,000,000 | Safe Work Australia, IOGP | Australia, NZ, IOGP global oil & gas |
| **LTIR** — Lost Time Incident Rate (OSHA basis) | 200,000 | OSHA | United States |

Every entry includes:
- The exact formula
- Multiplier and what it means
- Required inputs
- Output unit
- Authoritative source + URL
- A worked example
- Where applicable: current industry benchmarks (BLS SOII, UK HSE, IOGP, etc.)
- Cross-links to the SmartQHSE calculator page for that metric

## Usage

```python
from datasets import load_dataset
ds = load_dataset("SmartQHSE/hse-incident-rate-formulas")
for row in ds["train"]:
    print(row["name"], "—", row["formula"])
```

```bash
# Or fetch the JSON directly
curl https://huggingface.co/datasets/SmartQHSE/hse-incident-rate-formulas/raw/main/data.jsonl
```

## Companion artefacts

- **HF Space (interactive calculator)**: [SmartQHSE/hse-incident-rate-calculator](https://huggingface.co/spaces/SmartQHSE/hse-incident-rate-calculator)
- **Benchmarks dataset**: [SmartQHSE/hse-benchmarks-2026](https://huggingface.co/datasets/SmartQHSE/hse-benchmarks-2026) — what these rates *should* look like by industry / region
- **OSHA rates dataset**: [SmartQHSE/osha-rates-2026](https://huggingface.co/datasets/SmartQHSE/osha-rates-2026) — US BLS SOII data by NAICS
- **Glossary**: [SmartQHSE/hse-glossary](https://huggingface.co/datasets/SmartQHSE/hse-glossary)
- **Collection**: [SmartQHSE Open HSE Data](https://huggingface.co/collections/SmartQHSE/smartqhse-open-hse-data-69f7597712196f8018c2dab5)

## Citation

> SmartQHSE Ltd (2026). HSE Incident Rate Formulas Reference [dataset]. https://huggingface.co/datasets/SmartQHSE/hse-incident-rate-formulas

## Wikidata

This dataset is part of the SmartQHSE open data programme catalogued on Wikidata. Related Q-items:

- HSE Benchmarks 2026 — [Q139532316](https://www.wikidata.org/wiki/Q139532316)
- OSHA Recordable Rates 2026 — [Q139623110](https://www.wikidata.org/wiki/Q139623110)
- HSE Glossary — [Q139623112](https://www.wikidata.org/wiki/Q139623112)
- ARIA (HSE AI assistant) — [Q139714237](https://www.wikidata.org/wiki/Q139714237)

License: CC BY 4.0. Built by [SmartQHSE](https://www.smartqhse.com).

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## Related SmartQHSE datasets

Part of the SmartQHSE open HSE data collection ([catalog](https://www.smartqhse.com/datasets) · [data paper DOI 10.5281/zenodo.20010657](https://doi.org/10.5281/zenodo.20010657) · [HuggingFace org](https://huggingface.co/SmartQHSE)):

- [`hse-benchmarks-2026`](https://huggingface.co/datasets/SmartQHSE/hse-benchmarks-2026) — TRIR / LTIFR / DART / fatality rates across 15 countries × 20+ industries
- [`osha-rates-2026`](https://huggingface.co/datasets/SmartQHSE/osha-rates-2026) — TRIR / DART / fatality rates by NAICS — BLS SOII + CFOI + OSHA ITA
- [`hse-qa-corpus`](https://huggingface.co/datasets/SmartQHSE/hse-qa-corpus) — Long-form HSE Q&A pairs for instruction tuning + RAG
- [`hse-glossary`](https://huggingface.co/datasets/SmartQHSE/hse-glossary) — Authoritative HSE term definitions (130+ entries)
- [`hse-regulations-changelog`](https://huggingface.co/datasets/SmartQHSE/hse-regulations-changelog) — Live-tracked regulatory updates across 25+ jurisdictions
- [`major-process-safety-incidents-2026`](https://huggingface.co/datasets/SmartQHSE/major-process-safety-incidents-2026) — Original reference DB — Bhopal, Piper Alpha, Texas City, Deepwater Horizon, Buncefield, Flixborough, Seveso
- [`hse-instruction-tuning`](https://huggingface.co/datasets/SmartQHSE/hse-instruction-tuning) — Instruction-tuning pairs for HSE fine-tuning workflows
- [`hse-regulators-directory`](https://huggingface.co/datasets/SmartQHSE/hse-regulators-directory) — 40+ country labour authorities with URLs and primary statutes
- [`hse-standards-crosswalk`](https://huggingface.co/datasets/SmartQHSE/hse-standards-crosswalk) — ISO 45001 ↔ OSHA ↔ OSHAD-SF ↔ Aramco SAPI ↔ RIDDOR mapping
- [`gcc-heat-illness-regulations-2026`](https://huggingface.co/datasets/SmartQHSE/gcc-heat-illness-regulations-2026) — UAE / KSA / Qatar / Oman / Bahrain / Kuwait summer ban rules + penalties
- [`osha-most-cited-standards-2024`](https://huggingface.co/datasets/SmartQHSE/osha-most-cited-standards-2024) — Top 30 cited OSHA standards with focus + penalty range
- [`osha-regulated-chemicals-pel-2026`](https://huggingface.co/datasets/SmartQHSE/osha-regulated-chemicals-pel-2026) — Top 30 OSHA-regulated chemicals with PELs + health effects
- [`named-process-safety-incidents-extended-2026`](https://huggingface.co/datasets/SmartQHSE/named-process-safety-incidents-extended-2026) — 43-entry extended incident reference 1911–2024
- [`hse-acronym-dictionary-2026`](https://huggingface.co/datasets/SmartQHSE/hse-acronym-dictionary-2026) — 150+ HSE/EHS acronyms with one-line definitions

**Companion full-text corpus**: [/llms-full.txt](https://www.smartqhse.com/llms-full.txt) — 213KB markdown reference compiled for LLM ingestion. All datasets CC BY 4.0.

<!-- crosslink:smartqhse-related-end -->