Quantity and Pressure limitation

This LAP¨refers to the quantity and pressure limitations. It underlines what are the requirements and limitations in terms of pressure and quantity of hydrogen for hydrogen transport. Finally, it shows if it is possible to increase the pressure/quantity, and if yes which authority is competent, what is the process to follow, how long does it takes and what are the costs associated if known.

Glossary:

Quantity and Pressure limitation represent the maximum quantity and/or pressure of gases which is allowed to be transported.

Pan-European Assessment:

There is no limitation in terms of pressure, (mostly transported at around 200-300 bars) In terms of quantity, the limitation is connected to the maximum weight the truck can transport.

select country:

Is it a barrier?

Yes

Type of Barrier

Structural barrier

Assessment Severity

Assessment

Tranpsort safety of high pressure hydrogen has to be proved. No regulation is stopping so the impact should not be overestimated.Since higher pressure than 250 bar have not been used for transportation of gasses, it needs to be shown that this can be done safely, but no explicit regulation forbids it. The costs for transporting hydrogen in this manner is uncertain so far.

Questions:

Question 1 What are the pressure requirements and limitations accepted for hydrogen transport by road?

Today 250 bar is used

Question 2 What are the quantity requirements and limitations accepted for hydrogen transport by road?

Only limited by national truck regulations, not specific for gasses.

EU Legislation:

ADR European Agreement concerning the international carriage of dangerous goods by roads.
hazardous materials may in general be transported internationally in wheeled vehicles, provided that conditions be met for the product packaging and labelling; and that the construction, equipment, and use of vehicles for the transport is compliant:
ADR European Agreement concerning the international carriage of dangerous goods by roads.ADR European Agreement concerning the international carriage of dangerous goods by roads.
ISO/DIS 17519 (EN) Gas cylinders – Refillable, permanently mounted composite tubes for transportation
Specifies the minimum requirements for the material, design construction and workmanship, manufacturing processes, examination and testing at time of manufacture of an assembly of permanently mounted composite tube(s) in a frame with associated components.