Modelling accidental phenomena for better risk management

Interview with Alban MAHON - Accidental Phenomena Modelling Specialist at APSYS

Safety and industrial risks linked to hydrogen

From the point of view of the methods and tools currently used in the industry, the assessment of risks and safety distances is based on several different model ranges, from the simplest to the most complex.

Therefore, the development of the hydrogen sector must be accompanied by the update of calculation methods in order to take into account hydrogen specificities (extremely flammable product, specific physico-chemical properties) or the conditions of the new use cases (cryogenic hydrogen storage, high distribution pressure, etc.).

For example, the storage of hydrogen in a liquid form, with a temperature close to absolute zero, leads to the specific consideration of cryogenic impact.


“Unlike the development of the latest aircraft (A350, A320neo), for the hydrogen aircraft, we are starting almost from scratch.”


This work is also accompanied by updates and developments of new tools, the validation needs of which are carried out in parallel by setting up experimental tests and studying scientific publications. The research focuses in particular on several areas such as hydrogen combustion, structural strength, cryogenic aspects, etc. The use of hydrogen can be seen as a challenge because of its use in extreme conditions, from cryogenic storage temperatures to more violent combustion/explosion. This is a real exploration in the field of physics.

APSYS is specialised in the field of performance and risk management and offers a comprehensive range of services, particularly for the hydrogen sector.

The services provided are aimed at optimising the performance and continuity of service of their clients’ systems and installations with a view to the sustainability of their activities:

  • Sustainability: Environment and industrial risks, regulatory files (ICPE, ATEX, hazards and environmental impacts, etc.), energy management, fire safety engineering, risk management & supply chain
  • Safety: Reliability and operational safety, operational availability and total cost of ownership, maintenance optimisation, human factors
  • Security: Governance, audits and services in industrial cyber security, security operation centre

Hydrogen+ magazine

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