Initial dataset: Risk Matrix Reference 2026 — 5x5, 4x4, and 3x3 with ALARP Zones

LICENSE

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+Creative Commons Attribution 4.0 International (CC BY 4.0)
+
+You are free to:
+- Share -- copy and redistribute the material in any medium or format
+- Adapt -- remix, transform, and build upon the material for any purpose, even commercially.
+
+Under the following terms:
+- Attribution -- You must give appropriate credit (cite SmartQHSE Ltd as source with link to https://www.smartqhse.com), provide a link to the license, and indicate if changes were made.
+
+Full text: https://creativecommons.org/licenses/by/4.0/legalcode

README.md

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 ---
 license: cc-by-4.0
+language:
+- en
+size_categories:
+- n<1K
+tags:
+- hse
+- risk-matrix
+- risk-assessment
+- alarp
+- iso-31000
+- 5x5-matrix
+- risk-score
+- tolerable-risk
+- process-safety
+- occupational-safety
+pretty_name: "Risk Matrix Reference 2026 — 5x5, 4x4, and 3x3 with ALARP Zones"
 ---
+
+# Risk Matrix Reference 2026 — 5x5, 4x4, and 3x3 with ALARP Zones
+
+> Fully populated risk matrices in 5x5 (25 cells), 4x4 (16 cells), and 3x3 (9 cells) configurations. Each cell: severity level + descriptor, likelihood level + descriptor, risk score, risk band (Very Low / Low / Medium / High / Very High), ALARP zone (Broadly Acceptable / Tolerable / Intolerable), and recommended management action. Follows ISO 31000, UK HSE five-step, and IOGP ALARP conventions.
+
+## Dataset details
+
+- **Publisher**: SmartQHSE Ltd (https://www.smartqhse.com)
+- **License**: CC BY 4.0 -- please cite with link to https://www.smartqhse.com
+- **Format**: CSV (UTF-8)
+- **Schema**: see data.csv first row (header)
+- **DOI**: [10.5281/zenodo.20171695](https://doi.org/10.5281/zenodo.20171695) -- permanent Zenodo citation
+- **Update cadence**: annual or on regulatory change
+- **Canonical home**: https://www.smartqhse.com/datasets
+
+## Suggested citation
+
+SmartQHSE Ltd (2026). Risk Matrix Reference 2026 — 5x5, 4x4, and 3x3 with ALARP Zones [dataset]. Zenodo. https://doi.org/10.5281/zenodo.20171695
+
+## Related SmartQHSE resources
+
+- [SmartQHSE platform](https://www.smartqhse.com) -- full QHSE software with ARIA AI assistant
+- [Open datasets catalog](https://www.smartqhse.com/datasets)
+- [Companion full-text corpus](https://www.smartqhse.com/llms-full.txt) (LLM-optimised SmartQHSE knowledge base)
+
+## Disclaimer
+
+This dataset is published for reference, training, and research. Regulatory text and action levels are summarised; consult the authoritative source listed before basing operational or compliance decisions on this dataset. SmartQHSE Ltd accepts no liability for errors or omissions.

data.csv

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+matrix_size,severity_level,severity_descriptor,likelihood_level,likelihood_descriptor,risk_score,risk_band,alarp_zone,recommended_action
+5x5,1,Insignificant (no injury / negligible damage),1,Rare (may occur only in exceptional circumstances — less than once in 10 years),1,Very Low,Broadly Acceptable,Routine management; no special controls required; retain existing controls
+5x5,1,Insignificant (no injury / negligible damage),2,Unlikely (could occur but not expected — once in 5-10 years),2,Very Low,Broadly Acceptable,Routine management; monitor periodically
+5x5,1,Insignificant (no injury / negligible damage),3,Possible (might occur occasionally — once in 1-5 years),3,Low,Broadly Acceptable,Low priority; existing controls probably adequate; note for periodic review
+5x5,1,Insignificant (no injury / negligible damage),4,Likely (will probably occur in most circumstances — once per year),4,Low,ALARP (Tolerable),Manage by routine procedures; ensure controls maintained
+5x5,1,Insignificant (no injury / negligible damage),5,Almost Certain (expected to occur in most circumstances — more than once per year),5,Medium,ALARP (Tolerable),Moderate priority; additional controls may be justified; management responsibility
+5x5,2,Minor (first aid injury / minor property damage < $10K),1,Rare,2,Low,Broadly Acceptable,Low priority; manage by routine procedures
+5x5,2,Minor (first aid injury / minor property damage < $10K),2,Unlikely,4,Low,ALARP (Tolerable),Manage by routine procedures; monitor
+5x5,2,Minor (first aid injury / minor property damage < $10K),3,Possible,6,Medium,ALARP (Tolerable),Moderate priority; consider additional controls; supervisor responsibility
+5x5,2,Minor (first aid injury / minor property damage < $10K),4,Likely,8,High,ALARP (Tolerable),Senior management attention required; implement additional controls
+5x5,2,Minor (first aid injury / minor property damage < $10K),5,Almost Certain,10,High,ALARP (Tolerable),Urgent attention; additional controls required before continuation
+5x5,3,Moderate (medical treatment / significant damage $10K-$100K),1,Rare,3,Low,Broadly Acceptable,Manage by routine procedures
+5x5,3,Moderate (medical treatment / significant damage $10K-$100K),2,Unlikely,6,Medium,ALARP (Tolerable),Moderate priority; specify controls; management responsibility
+5x5,3,Moderate (medical treatment / significant damage $10K-$100K),3,Possible,9,High,ALARP (Tolerable),Senior management attention; additional controls required; implement within defined timescale
+5x5,3,Moderate (medical treatment / significant damage $10K-$100K),4,Likely,12,High,ALARP (Tolerable),Urgent additional controls required; escalate to senior management
+5x5,3,Moderate (medical treatment / significant damage $10K-$100K),5,Almost Certain,15,Very High,Intolerable,Stop activity; work must not continue until risk is reduced to ALARP
+5x5,4,Major (serious injury / LTI / significant damage $100K-$1M),1,Rare,4,Low,ALARP (Tolerable),Manage by specific procedures; ensure effective controls exist
+5x5,4,Major (serious injury / LTI / significant damage $100K-$1M),2,Unlikely,8,High,ALARP (Tolerable),Senior management attention; additional controls required within defined timescale
+5x5,4,Major (serious injury / LTI / significant damage $100K-$1M),3,Possible,12,High,ALARP (Tolerable),Urgent; senior management action; must reduce risk as a priority
+5x5,4,Major (serious injury / LTI / significant damage $100K-$1M),4,Likely,16,Very High,Intolerable,Stop activity; extensive risk reduction required before resuming
+5x5,4,Major (serious injury / LTI / significant damage $100K-$1M),5,Almost Certain,20,Very High,Intolerable,Prohibit activity; fundamental redesign or alternative method required
+5x5,5,Catastrophic (fatality or multiple fatalities / damage >$1M),1,Rare,5,Medium,ALARP (Tolerable),Senior management attention; ALARP demonstration required; monitor controls closely
+5x5,5,Catastrophic (fatality or multiple fatalities / damage >$1M),2,Unlikely,10,High,ALARP (Tolerable),Urgent additional controls required; ALARP demonstration; escalate to management
+5x5,5,Catastrophic (fatality or multiple fatalities / damage >$1M),3,Possible,15,Very High,Intolerable,Stop activity; work must not proceed without fundamental control improvement
+5x5,5,Catastrophic (fatality or multiple fatalities / damage >$1M),4,Likely,20,Very High,Intolerable,Prohibit activity; Executive / Board level decision required to proceed
+5x5,5,Catastrophic (fatality or multiple fatalities / damage >$1M),5,Almost Certain,25,Very High,Intolerable,Prohibit absolutely; activity cannot be performed at present design / method
+4x4,1,Low severity (no / minor injury — first aid; negligible damage),1,Improbable (not expected to occur — once in 10+ years),1,Very Low,Broadly Acceptable,No immediate action; existing controls adequate
+4x4,1,Low severity (no / minor injury — first aid; negligible damage),2,Remote (occurs rarely — once in 5-10 years),2,Very Low,Broadly Acceptable,Low priority; record and monitor
+4x4,1,Low severity (no / minor injury — first aid; negligible damage),3,Occasional (occurs from time to time — once in 1-5 years),3,Low,ALARP (Tolerable),Manage by routine procedure; verify controls
+4x4,1,Low severity (no / minor injury — first aid; negligible damage),4,Probable (expected to occur — more than once per year),4,Medium,ALARP (Tolerable),Management attention; consider additional controls
+4x4,2,Medium severity (medical treatment; significant damage < $100K),1,Improbable,2,Very Low,Broadly Acceptable,Low priority; manage by routine procedure
+4x4,2,Medium severity (medical treatment; significant damage < $100K),2,Remote,4,Medium,ALARP (Tolerable),Moderate priority; management review; additional controls may be needed
+4x4,2,Medium severity (medical treatment; significant damage < $100K),3,Occasional,6,High,ALARP (Tolerable),Management action required; additional controls within defined timeframe
+4x4,2,Medium severity (medical treatment; significant damage < $100K),4,Probable,8,High,ALARP (Tolerable),Urgent; senior management attention; priority risk reduction
+4x4,3,High severity (serious injury / LTI; major damage $100K-$1M),1,Improbable,3,Low,ALARP (Tolerable),Management review; ensure ALARP; verify barriers are effective
+4x4,3,High severity (serious injury / LTI; major damage $100K-$1M),2,Remote,6,High,ALARP (Tolerable),Senior management attention; additional controls required; ALARP demonstration
+4x4,3,High severity (serious injury / LTI; major damage $100K-$1M),3,Occasional,9,Very High,Intolerable,Stop task; implement immediate risk reduction; executive sign-off to resume
+4x4,3,High severity (serious injury / LTI; major damage $100K-$1M),4,Probable,12,Very High,Intolerable,Prohibit activity; fundamental control improvement required
+4x4,4,Catastrophic (fatality or multiple fatalities; damage >$1M),1,Improbable,4,Medium,ALARP (Tolerable),Senior management attention; ALARP demonstration required; escalate
+4x4,4,Catastrophic (fatality or multiple fatalities; damage >$1M),2,Remote,8,High,ALARP (Tolerable),Urgent; additional risk controls required; ALARP demonstration; executive awareness
+4x4,4,Catastrophic (fatality or multiple fatalities; damage >$1M),3,Occasional,12,Very High,Intolerable,Stop activity; executive / board decision required before resuming
+4x4,4,Catastrophic (fatality or multiple fatalities; damage >$1M),4,Probable,16,Very High,Intolerable,Prohibit absolutely; activity must not proceed
+3x3,1,Low (minor injury / near miss; negligible damage),1,Low probability (unlikely in normal operations),1,Low,Broadly Acceptable,Acceptable risk; existing controls adequate; note for review
+3x3,1,Low (minor injury / near miss; negligible damage),2,Medium probability (reasonably foreseeable),2,Low,Broadly Acceptable,Low priority; monitor; confirm controls in place
+3x3,1,Low (minor injury / near miss; negligible damage),3,High probability (likely to occur),3,Medium,ALARP (Tolerable),Moderate priority; management attention; additional controls to be considered
+3x3,2,Medium (medical treatment / significant injury; moderate damage),1,Low probability,2,Low,Broadly Acceptable,Low priority; manage by specific procedure; review controls
+3x3,2,Medium (medical treatment / significant injury; moderate damage),2,Medium probability,4,High,ALARP (Tolerable),Management attention required; additional controls within defined timeframe
+3x3,2,Medium (medical treatment / significant injury; moderate damage),3,High probability,6,High,ALARP (Tolerable),Urgent; senior management action; priority risk reduction required
+3x3,3,High (fatality or serious injury; major damage),1,Low probability,3,Medium,ALARP (Tolerable),Management attention; ALARP review; ensure barriers are robust
+3x3,3,High (fatality or serious injury; major damage),2,Medium probability,6,High,ALARP (Tolerable),Urgent; senior management action; additional controls; ALARP demonstration
+3x3,3,High (fatality or serious injury; major damage),3,High probability,9,Very High,Intolerable,Stop activity immediately; executive approval required; fundamental redesign