Study of potential leakage on several stressed fittings for hydrogen pressures up to 700 bar

Deborah Houssin-Agbomson (1) , Didier Jamois (2) , Christophe Proust (2) , Jérôme Daubech (2) , Sidonie Ruban (1) , Simon Jallais (1)

1 Air Liquide [Siège Social]
2 INERIS - Institut National de l'Environnement Industriel et des Risques

In order to improve risk analyses and influence the design of the future H2 systems, an experimental study on 'real' leaks qualification and quantification was performed. In H2 energy applications, fittings appeared as a significant leakage potential and subsequently explosion and flame hazards. Thus, as a part of the 'Horizon Hydrogene Energie' French program, four kinds of commercial fittings usually employed on H2 systems were tested thanks to a new high pressure test bench - designed, setup and operated by INERIS - allowing experiments to be led for H2 pressures until 700 bar. The fittings underwent defined stresses representative of H2 systems lifetime and beyond. The associated leaks - when existing - are characterized in terms of flow rate.

Mots clés: LEAK; HYDROGEN; HIGH PRESSURE; FITTINGS; HYDROGEN ENERGY-BASED APPLICATIONS; SAFETY

Domaines: Sciences de l'ingénieur [physics]

Deborah Houssin-Agbomson, Didier Jamois, Christophe Proust, Jérôme Daubech, Sidonie Ruban, et al.. Study of potential leakage on several stressed fittings for hydrogen pressures up to 700 bar. International Journal of Hydrogen Energy, 2012, 37, pp.17509-17516. ⟨10.1016/j.ijhydene.2012.04.149⟩. ⟨ineris-00961784⟩