{
  "metadata": {
    "name": "SmartQHSE HSE Incident Rate Formulas",
    "description": "Reference dataset of standard occupational-safety incident-rate formulas (TRIR, LTIFR, DART, AFR, Severity Rate, TRIFR, LTIR) with multipliers, inputs, jurisdictions, authoritative sources, worked examples, and current industry benchmarks. Pairs with the SmartQHSE/hse-incident-rate-calculator HF Space.",
    "publisher": "SmartQHSE Ltd",
    "license": "CC BY 4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "cite_as": "SmartQHSE Ltd (2026). HSE Incident Rate Formulas Reference [dataset]. https://huggingface.co/datasets/SmartQHSE/hse-incident-rate-formulas",
    "canonical_page": "https://www.smartqhse.com/hse-statistics",
    "hf_space": "https://huggingface.co/spaces/SmartQHSE/hse-incident-rate-calculator",
    "collection": "https://huggingface.co/collections/SmartQHSE/smartqhse-open-hse-data-69f7597712196f8018c2dab5",
    "rows": 7,
    "last_updated": "2026-05-08"
  },
  "data": [
    {
      "id": "trir",
      "name": "TRIR",
      "full_name": "OSHA Total Recordable Incident Rate",
      "formula": "TRIR = (recordable cases × 200000) / total hours worked",
      "multiplier": 200000,
      "multiplier_meaning": "200000 ≈ 100 employees × 40 hr/wk × 50 wk/yr — the OSHA standard exposure base",
      "inputs": [
        "recordable cases (OSHA 29 CFR 1904.7)",
        "total hours worked"
      ],
      "output_unit": "cases per 100 full-time employees per year",
      "jurisdiction": "United States",
      "authority": "OSHA",
      "source": "29 CFR 1904",
      "source_url": "https://www.osha.gov/recordkeeping",
      "example": {
        "recordable_cases": 3,
        "hours": 500000,
        "result": 1.2
      },
      "benchmarks_2024": {
        "us_private_industry": 2.7,
        "construction": 2.5,
        "mining": 1.7,
        "manufacturing": 2.8,
        "healthcare": 4.7,
        "retail": 2.6
      },
      "related_pages": [
        "https://www.smartqhse.com/trir-calculator",
        "https://www.smartqhse.com/safety-blog/ltir-vs-trir-vs-ltifr-differences"
      ]
    },
    {
      "id": "ltifr",
      "name": "LTIFR",
      "full_name": "Lost Time Injury Frequency Rate",
      "formula": "LTIFR = (LTI cases × 1000000) / total hours worked",
      "multiplier": 1000000,
      "multiplier_meaning": "Per million hours worked — international ILO/HSE standard",
      "inputs": [
        "lost time injuries (>1 day away from work)",
        "total hours worked"
      ],
      "output_unit": "lost-time injuries per million hours",
      "jurisdiction": "International (ILO/UK/GCC/AU)",
      "authority": "ILO, UK HSE",
      "source": "ILO 16th ICLS Resolution III",
      "source_url": "https://www.ilo.org/global/statistics-and-databases/lang--en/index.htm",
      "example": {
        "lti_cases": 2,
        "hours": 500000,
        "result": 4
      },
      "benchmarks_2024": {
        "uk_all_industries": 1,
        "gcc_oil_gas_iogp": 0.6,
        "uae_construction_oshad": 3,
        "australia_mining": 2.5
      },
      "related_pages": [
        "https://www.smartqhse.com/safety-blog/ltir-vs-trir-vs-ltifr-differences"
      ]
    },
    {
      "id": "dart",
      "name": "DART",
      "full_name": "Days Away, Restricted, or Transferred Rate",
      "formula": "DART = (DART cases × 200000) / total hours worked",
      "multiplier": 200000,
      "multiplier_meaning": "Same OSHA 200000 base as TRIR; subset (cases with days away or job transfer/restriction)",
      "inputs": [
        "DART cases per OSHA 29 CFR 1904.7",
        "total hours worked"
      ],
      "output_unit": "DART cases per 100 full-time employees per year",
      "jurisdiction": "United States",
      "authority": "OSHA",
      "source": "29 CFR 1904.7",
      "source_url": "https://www.osha.gov/recordkeeping/RKforms.html",
      "example": {
        "dart_cases": 2,
        "hours": 500000,
        "result": 0.8
      },
      "benchmarks_2024": {
        "us_private_industry": 1.7
      },
      "related_pages": [
        "https://www.smartqhse.com/dart-rate-calculator"
      ]
    },
    {
      "id": "afr",
      "name": "AFR",
      "full_name": "Accident Frequency Rate",
      "formula": "AFR = (accidents × 1000000) / total hours worked",
      "multiplier": 1000000,
      "multiplier_meaning": "Per million hours; broader than OSHA recordable. Common UK HSE / GCC default",
      "inputs": [
        "accidents (definition varies; often any reportable incident)",
        "total hours worked"
      ],
      "output_unit": "accidents per million hours",
      "jurisdiction": "United Kingdom, GCC, generic",
      "authority": "UK HSE",
      "source": "HSE Methods Statement",
      "source_url": "https://www.hse.gov.uk/statistics/sources.htm",
      "example": {
        "accidents": 5,
        "hours": 500000,
        "result": 10
      },
      "related_pages": [
        "https://www.smartqhse.com/afr-calculator",
        "https://www.smartqhse.com/frequency-rate-calculator"
      ]
    },
    {
      "id": "severity_rate",
      "name": "Severity Rate",
      "full_name": "Severity Rate (days lost per million hours)",
      "formula": "Severity = (days lost × 1000000) / total hours worked",
      "multiplier": 1000000,
      "multiplier_meaning": "Per million hours — a measure of how serious injuries are on average",
      "inputs": [
        "total days lost (sum across all LTI cases)",
        "total hours worked"
      ],
      "output_unit": "days lost per million hours",
      "jurisdiction": "International (ILO)",
      "authority": "ILO",
      "source": "ILO 16th ICLS Resolution III",
      "source_url": "https://www.ilo.org/global/statistics-and-databases/lang--en/index.htm",
      "example": {
        "days_lost": 40,
        "hours": 500000,
        "result": 80
      },
      "related_pages": [
        "https://www.smartqhse.com/severity-rate-calculator"
      ]
    },
    {
      "id": "trifr",
      "name": "TRIFR",
      "full_name": "Total Recordable Injury Frequency Rate",
      "formula": "TRIFR = (recordable injuries × 1000000) / total hours worked",
      "multiplier": 1000000,
      "multiplier_meaning": "Same numerator as TRIR but per-million-hours basis (Australian / IOGP standard)",
      "inputs": [
        "recordable injuries",
        "total hours worked"
      ],
      "output_unit": "recordable injuries per million hours",
      "jurisdiction": "Australia, NZ, IOGP global oil & gas",
      "authority": "Safe Work Australia, IOGP",
      "source": "Safe Work Australia WHS Code; IOGP Safety Performance Indicators",
      "source_url": "https://www.iogp.org/bookstore/product/iogp-report-2023s-safety-performance-indicators-2022-data/",
      "example": {
        "recordable_injuries": 3,
        "hours": 500000,
        "result": 6
      },
      "benchmarks_2024": {
        "iogp_global_oil_gas": 0.83,
        "australia_construction": 5.2,
        "australia_mining": 2.6
      },
      "related_pages": [
        "https://www.smartqhse.com/safety-blog/ltir-vs-trir-vs-ltifr-differences"
      ]
    },
    {
      "id": "ltir",
      "name": "LTIR",
      "full_name": "Lost Time Incident Rate (OSHA basis)",
      "formula": "LTIR = (LTI cases × 200000) / total hours worked",
      "multiplier": 200000,
      "multiplier_meaning": "OSHA-basis equivalent of LTIFR — per 100 FTEs",
      "inputs": [
        "lost time injuries",
        "total hours worked"
      ],
      "output_unit": "LTI per 100 FTE per year",
      "jurisdiction": "United States",
      "authority": "OSHA",
      "source": "29 CFR 1904",
      "source_url": "https://www.osha.gov/recordkeeping",
      "example": {
        "lti_cases": 2,
        "hours": 500000,
        "result": 0.8
      },
      "related_pages": [
        "https://www.smartqhse.com/ltir-calculator"
      ]
    }
  ]
}