CSA AMERICA HGV 4.5-2009
Temporary interim requirement for priority and sequencing equipment for hydrogen vehicle fueling
This Standard details construction and performance requirements of priority and sequencing equipment which is part of a hydrogen gas vehicle fueling system. This Standard contains safety requirements for the design, manufacture and testing of the priority and sequencing systems for compressed gaseous hydrogen dispensers which are designed primarily to provide compressed hydrogen for vehicle fueling stations. This Standard does not apply to the pressure swing absorber sequencing panel or the gas dryer sequencing panel.