30+ open-source HSE (Health, Safety, Environment) calculators — TRIR, LTIR, LTIFR, DART, EMR, severity rate, WBGT heat stress, noise exposure, hand-arm vibration, REBA, RULA, NIOSH lifting, fire load, evacuation time, risk matrix. Pure TypeScript, zero dependencies, regulation-cited (OSHA, HSE UK, ISO 45001, ILO, ACGIH, NIOSH, NFPA). MIT.
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Updated
Apr 23, 2026 - TypeScript