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

Questions:

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

Gases which, at a temperature of 20 ° C and a standard pressure of 101,3 kPa: (a) are flammable in a maximum of 13% (volume) mixture with air; or (b) have a flammability range with air of at least 12 percentage points, whatever their lower flammability limit. Flammability must be determined either by means of tests or by calculation according to methods approved by ISO (see ISO 10156: 1996). When the available data are insufficient to use these methods, equivalent test methods recognized by the competent authority of the country of origin may be applied If the country of origin is not a Contracting Party to the ADR, equivalent testing methods have to be recognized by the competent authority of the first country Contracting Party to the ADR touched by the consignment.

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

The quantity is limited by the authorized maximum mass M.M.A. of each vehicle, and it depends on the different vehicles. The M.M.A is explained in the Traffic Cod and follows the normal regulation. There is no a maximum quantity to transport H2 in Portugal, regarding the Dangerous Goods Transport. The product of maximum pressure and volume stablish the class of transport and its inspections or safety measures, but there is no limit.

Describe the comparable technology and its relevance with regard to hydrogen

Other explosive substances or gases

National legislation:

Decree–Law no. 41–A / 2010 of 29 April – Regulates the transport by land, road and rail of dangerous goods, transposing Directive 2006/90 / EC of the Commission of 3 November and Directive 2008/68 / EC into the internal legal order, of the European Parliament and of the Council of 24

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.