Straight flush

This is accomplished through repeated pressure cycles, alternately reducing and rebuilding the internal pressure - which gradually dilutes the residual nitrogen and replaces it with high-purity hydrogen. The goal is to reach a hydrogen purity of at least 99.97%, ensuring the MEGC is fit for hydrogen applications without risking damage to sensitive downstream equipment.

When the internal temperature of an MEGC exceeds 25°C, the cylinder pressure can be brought down from 20 bar(g) to near atmospheric levels. This unlocks a shift from conventional cold-flushing to hot-flushing, a method that operates across far narrower pressure intervals. The impact on hydrogen consumption is substantial - hot-flushing can reduce it by as much as 90%, translating directly into a dramatic reduction in cost per container flushed.

The trade-off is complexity. Hot-flushing demands rigorous control and continuous monitoring at every stage: the ambient conditions surrounding the MEGC, the internal temperature of the Type IV cylinders, and the temperature of the hydrogen being introduced must all consistently remain above 25°C.

Across the Nordic region and much of Northern and Central Europe, outdoor temperatures only meet this threshold during a narrow window in the summer months. For the rest of the year, hot-flushing requires access to certified, ATEX-compliant indoor facilities - and right now, very few such facilities exist that can perform this process to the standard DRIV hydrogen has established.

This gap in the market has led us to establish a clear strategic ambition: to become a leading European provider of hot-flushing services and integrated MEGC handling solutions.