Hydrogen Hazard Assessment & Mitigation in Various Applications
August 26-28, 2025
BlazeTech Corporation
29B Montvale Ave.
Woburn, MA 01801 USA
3-day course in-person. All participants must show proof of compliance with US federal and Massachusetts COVID-19 travel requirements at the time of the course; and those who do not will be denied entrance to the course.
By N. Albert Moussa, PhD, PE
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Course Outline
- Introduction
- Previous hydrogen economies
- Hydrogen use in petrochemical industry
- H2 Colors: Green, Blue, Grey, Brown, Black
- Fuel cell and electrolyzer stacks
- Exceptional Properties that Differentiate Hydrogen from Other Gases
- Thermodynamic diagrams
- Negative Joule-Thomson coefficient
- Thermophysical properties, thermophoresis
- Hydrogen embrittlement
- Cryogenic considerations
- Wide flammability limit, ease of ignition, and fast flame speed
- Hydrogen Storage and Delivery
- Storage as compressed gas v. liquid
- Blending hydrogen/natural gas for pipelines
- Hydrogen production from methanol and NH3
- Fuel cell types and efficiencies
- Firing in conventional burners/engines
- Accidental Release of Hydrogen
- Discharge flow rate at pressure and temp.
- Continuous leak v. instantaneous discharge
- Jet formation and mixing with surrounding air
- High pressure release; autoignition potential?
- Liquid spill produces a spreading/boiling pool
- Formation of initially dense cold vapors
- Air mixing yields buoyant/rising puff/plume
- Fires in the Open
- Ignition of pool and jet and flames
- Effects of wind on flame tilting
- Thermal impacts on adjacent structures
- Will puff/plume disperse prior to ignition?
- Vapor cloud fire in delayed ignition scenario
- Domino events and fireballs
- Fires Inside Structures
- Hydrogen leak detection methods
- Will dilution by ventilation preempt ignition?
- H2 enhances burning of other materials
- Vapors accumulate, air mix, can deflagrate?
- Deflagration flame speed vs. local conditions
- Pressure rise and structural failure?
- Protection methods
- Explosions
- Conditions leading to detonation
- Deflagration transition to detonation, DDT?
- Overpressure and TNT equivalent yield
- Structural response
- Hydrogen Safety Assessment in Transport
- Hydrogen v. lithium-ion batteries
- Lessons learned from current car fleet
- Applications to trucks, rails, and ships
- Safety protection during refueling
- Hydrogen usage on aircraft and air taxis
- Crash fire hazards of compressed gas and liquid hydrogen v. carbon-based fuels
- Hazard of release from a pipeline break
- Adaptation of lessons learned from hydrogen usage in space applications
- Hydrogen Safety Assessment in Facilities
- Data centers, backup power, and airports
- Hazards from hydrogen production on site
- Hazards from uses in firing equipment
- Adaptation of lessons learned from hydrogen usage in chemical plants
- Adaptation of bulk delivery requirements of liquified gases to hydrogen
- NFPA 2, NFPA 55
- Hydrogen fire detection and suppression
- Hazard/Risk Assessments
- Closure
Discussions are encouraged throughout the course.