arpadveress 
Hydrogen is indeed a promising alternative fuel source due to its high energy content and because its use results in water, not carbon dioxide. However, it does introduce new safety considerations, particularly around explosion and fire risks due to its flammability.
Production: Hydrogen can be produced in various ways, but if it’s being produced through electrolysis, equipment should be designed to handle the high pressures and voltages involved. Regular maintenance and inspection are essential to identify potential leak points or equipment failure.
Storage: Hydrogen should be stored in an approved container capable of withstanding high pressure. These storage areas should have ventilation to the outside to prevent accumulation of hydrogen gas in case of a leak, and they should be equipped with hydrogen-specific detectors to identify leaks quickly.
Transportation and Filling: Hydrogen should be transported in approved vessels designed for high pressure. During filling operations, static electricity can ignite the hydrogen, so grounding and bonding are essential to prevent static build-up.
Equipment: Use only equipment rated for use with hydrogen in potentially explosive atmospheres. This includes using explosion-proof electrical equipment and intrinsically safe tools.
Training: Workers should be properly trained in handling hydrogen and understanding its risks, including how to respond to a hydrogen fire.
Risk Assessment: Regular risk assessments should be conducted to identify and mitigate potential hazards related to hydrogen use.
While hydrogen is a promising fuel, it’s important to treat it with the same respect and caution as other hazardous materials. We shall always refer to local, national, and international safety regulations when working with hydrogen.
Indeed H2 = Ex. As I see this fact surprises many in many ways. Current understanding of H2 by many simply says it is flammable. Not only, amoung others it is Ex as well.
Keep up the good work!
Arpad
