1. Introduction -- 2. Historical survey of hydrogen accidents -- 3. Hydrogen properties associated with hazards -- 4. Hydrogen hazards -- 5. Hazards in hydrogen storage facilities -- 6. Hazards of hydrogen use in vehicles -- 7. Inherently safer design -- 8. Safety management systems -- 9. HySafe : safety of hydrogen as an energy carrier -- 10. Case studies -- 11. Effects of hydrogen on materials of construction -- 12. Future requirements for hydrogen safety -- 13. Legal requirements for hydrogen safety -- 14. Conclusion.