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

Identification of technical requirements and limitations for hydrogen transport.

Questions:

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

ADR does not restrict pressure limits for hydrogen transport, but the pressure receptacle should have a safety factor 3. The safety factor is defined as the ratio between the burst pressure and the nominal fill pressure.

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

According to the ADR European Agreement and the Transportable Pressure Equipment Directive, the cylinder/tube volumes for transport of compressed gases are restricted: 150l for cylinders, 450l for pressure vessels designated as cylinders but with a water capacity greater than 150l, and 3.000l for tubes.

Describe the comparable technology and its relevance with regard to hydrogen

Transportable pressure equipment for compressed gases Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents

National legislation:

ADR – applicable as form 1 January 2017
It determines the scope of the dangerous goods regulations. ADR has to be applied.

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.