Fire safety in parking garages has recently become a topic of discussion, due to fires involving electrically powered vehicles. Parking of other types of non-conventional cars, e.g. hydrogen cars, also raises questions regarding public safety. For that reason, the Ministry of Infrastructure and Water Management (IenW) has asked the Netherlands Institute for Safety (IFV) to investigate safety aspects of hydrogen cars in parking garages.
A study of the available literature has shown how hydrogen can be released from a hydrogen car in a parking garage, what may happen when released hydrogen ignites, which parameters are important with respect to the release and ignition of hydrogen and how likely these aspects are in a parking garage.
The results show that hydrogen can be released from a hydrogen container in various ways and that effects such as a jet flame or an explosion can occur. The probability of hydrogen being released and the possible effects of this release are not the same for parking garages compared to public roads, because the circumstances differ.