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Free EHS education for everyone

Everything you need to become a
safety professional,
from day one.

A complete, free, standard-referenced curriculum — Environment, Health & Safety from absolute basics to advanced practice. No paywalls. No registration required.

7
Learning phases
50+
Topics covered
200+
Standards referenced
42
Practice questions
$0
Cost — always free
Structured learning path

From beginner to advanced
in six phases

Each phase builds on the last. Start at Phase 1 if you are new to EHS — or jump to any phase if you need a specific topic. Every page is self-contained.

Phase 1
EHS Foundations
Beginner
⚠️
Phase 2
Hazard ID & Risk
Beginner
🏛
Phase 3
Legal & Regulatory
Intermediate
🔥
Phase 4
Core Safety Topics
Intermediate
🌍
Phase 5
Environmental Health
Intermediate
🎓
Phase 6
Advanced EHS
Advanced
🏭
Phase 7
Industry Safety
Advanced
Standards & frameworks referenced throughout this curriculum
OSHA 29 CFR 1910 OSHA 29 CFR 1926 ISO 45001:2018 ISO 14001:2015 ISO 31000:2018 IEC 31010:2019 NFPA 70E:2024 NFPA 101:2021 NFPA 10:2022 GHS Rev.9 (UN) Clean Air Act Clean Water Act RCRA 40 CFR 261 CERCLA §107 ILO C155 ILO C187 ACGIH TLVs NIOSH RELs Paris Agreement GHG Protocol ISO 19011:2018 ASTM E1527-21 EU 89/391/EEC ANSI Z10.0-2019 IEC 61882:2016 IEEE 1584:2018 OSHA PSM 1910.119 EPCRA §312 Montreal Protocol Basel Convention IFC PS 1–8 ISO 14064:2018 ANSI Z87.1:2020 ASTM F2413:2018
Topics A–Z

Find any topic instantly

Every major EHS topic — linked directly to the section that covers it, with the governing standard shown.

🌬
Air quality & NAAQS
Phase 5 · Clean Air Act
Arc flash & electrical safety
Phase 4 · NFPA 70E:2024
📋
Auditing EHS systems
Phase 6 · ISO 19011:2018
🧠
Behaviour-based safety (BBS)
Phase 6 · Hearts & Minds
🎓
Certifications (CSP, CIH, NEBOSH)
Phase 1 · BCSP · ABIH
🧪
Chemical safety & GHS
Phase 4 · HazCom 1910.1200
☣️
Contaminated sites (CERCLA)
Phase 5 · CERCLA §107
Confined space entry
Phase 4 · 29 CFR 1910.146
🏗
Construction safety & Fatal Four
Phase 4 · 29 CFR 1926
🏋
Ergonomics & MSDs
Phase 4 · NIOSH 94-110
🌿
Environmental management (ISO 14001)
Phase 5 · ISO 14001:2015
🔥
Fire safety & NFPA codes
Phase 4 · NFPA 1/10/101
⚖️
General Duty Clause
Phase 1 · OSH Act §5(a)(1)
🌡
Greenhouse gases & climate
Phase 5 · GHG Protocol
🗑
Hazardous waste (RCRA)
Phase 5 · 40 CFR 261
⚠️
Hazard categories (6 types)
Phase 2 · ISO 45001 §6.1
📝
Job Hazard Analysis (JHA)
Phase 2 · OSHA 3071
🛡
Hierarchy of controls
Phase 2 · ISO 45001 §8.1.2
🔬
Industrial hygiene (PEL, TLV, REL)
Phase 4 · ACGIH · NIOSH
🔍
Incident investigation & RCA
Phase 6 · ISO 45001 §10.2
🔒
Lockout/Tagout (LOTO)
Phase 4 · 29 CFR 1910.147
🕵️
OSHA inspections
Phase 3 · 29 CFR 1903
💰
OSHA penalties & violations
Phase 3 · OSH Act §17
🦺
Personal protective equipment
Phase 4 · 29 CFR 1910.132
🏭
Process safety management (PSM)
Phase 6 · 1910.119
📊
Recordkeeping (OSHA 300)
Phase 3 · 29 CFR 1904
🎯
Risk assessment process
Phase 2 · ISO 31000:2018
🌟
Safety culture maturity
Phase 6 · Hearts & Minds
⚙️
Safety management systems
Phase 6 · ISO 45001:2018
📄
Written safety programmes
Phase 3 · OSHA 1910
💧
Water quality & NPDES
Phase 5 · Clean Water Act
Workers' rights
Phase 3 · OSH Act §11(c)
🩸
Bloodborne pathogens & BBP programme
Phase 7 · 29 CFR 1910.1030
Exposure control plan, sharps engineering controls, HBV vaccination, post-exposure follow-up
☠️
H₂S — hydrogen sulfide safety
Phase 7 · NIOSH IDLH 100 ppm
The silent killer — olfactory fatigue, detection limits, O&G entry requirements
🤜
Workplace violence in healthcare
Phase 7 · OSHA 3148
4× private-sector rate · Cal/OSHA §3342 · WPV prevention programme elements
💥
Combustible dust — explosion prevention
Phase 7 · NFPA 652/654
Dust explosion pentagon, housekeeping, suppression systems, Imperial Sugar disaster
⚙️
Machine guarding
Phase 7 · 29 CFR 1910.212
Point-of-operation guards, power transmission, performance levels (ISO 13849-1 PLa–PLe)
MSHA & mining safety law
Phase 7 · Mine Act 1977 · 30 CFR
MSHA vs OSHA · mandatory 4 inspections/year · Part 46/48 miner training
🛢
Oil & gas process safety
Phase 7 · API RP 75 · 30 CFR 250
Well blowout prevention, BOPs, Deepwater Horizon lessons, fatigue risk (API RP 755)
🔬
Silica dust in manufacturing
Phase 7 · 29 CFR 1910.1053
PEL 50 µg/m³ (2016 rule), action level 25 µg/m³, silicosis prevention, medical surveillance
Our commitment

Free — and staying that way

Workplace safety knowledge should not be paywalled. Every worker and every aspiring safety professional deserves access to the same high-quality education, regardless of where they are or what they can afford.

📖
No paywalls, ever
Every topic, every standard reference, every quiz, every downloadable template — completely free. No premium tier. No subscription.
🌍
International standards
Every claim is referenced to a recognised standard — OSHA, ISO, ILO, EPA, NFPA, EU Directives. You see exactly where the information comes from.
🔄
Regularly updated
Standards change. Penalties change. The curriculum is updated to reflect current regulations — NFPA 70E:2024, ISO updates, EPA rule revisions, new OSHA enforcement policies.
🗺
Structured for beginners
Written by EHS specialists for people starting from zero. No assumed knowledge. Every acronym is explained. Every concept is built up from first principles.
⚖️
Zero advertisements
No sponsored content. No vendor promotions. No affiliate links. Just education — because safety training with a commercial agenda is safety training you cannot fully trust.
🎯
Exam-relevant content
Content maps directly to CSP, NEBOSH NGC, ASP, and OSHA 30-hour exam domains. Use this curriculum as supplementary study material for your professional certification.
"Every year, 2.78 million workers die from work-related causes. Every single one of those deaths was preventable. That is why EHS education matters — and why it must be free."
— ILO World Statistics on Occupational Safety and Health, 2023