NPROXX shares pressure vessel testing procedures

NPROXX shares pressure vessel testing procedures

As an emission-free power source, power from hydrogen fuel cells has the potential to revolutionise the way we travel, especially in built-up areas.

That’s according to NPRXOXX, a Netherland-based company which designs, develops and manufactures Type 4 pressure vessels for the storage of hydrogen under pressure.

NPROXX explains that hydrogen gas produced by industrial processes or by the electrolysis of water can be used in the cell to produce power for vehicles.

Water is the only by-product of this process, completely eliminating the particulate emissions and carbon dioxide produced by traditional combustion engines.

The European company explains that in any pressurised gas scenario, there is risk involved with the storage of the fuel – much like with other fuels such as petrol and diesel – which needs to be managed.

For this reason, all NPROXX carbon fibre pressure vessels undergo a wide range of stringent certification tests before they are tested to be delivered.

The tests ensure that the pressure vessels can reliably and repeatedly used without risk of the tank failing under pressure. The tests include:

  • Burst Tests: The vessels are tested at much higher pressures than their nominal working pressure, to ensure that they can withstand over-loading.
  • Durability Tests: During these tests the cylinder has to withstand the load cycles if multiple service lifetimes combined with introduced damage and extreme climate conditions.
  • Fire Tests: The vessels are tested in fire and extreme heat, to ensure that they release the contents without explosion.
  • Crash Tests: Vessels are put through simulated vehicle crash scenarios to test their innate strength and resistance to burst.
  • Gunfire/Explosion Tests: The pressure vessels are subjected to fun fire and explosions to test their strength and ability to withstand such scenario.

According to NPROXX, in all of the tests, the key performance indicator is the ability of the pressure vessel system to obtain the structural integrity or to release its pressurised gas without rupture, and in a way that is as safe as possible.


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