dry riser system

dry standpipe system

A standpipe system that is normally dry.
References in periodicals archive ?
And she blasted the tower's dry riser system - the pipes that firefighters use to pump water to tackle a blaze - which relies on an external supply with good water pressure.
Bush Fire, a fire protection engineering company in Middlesex, turned to LDV's Special Vehicle Operations (SVO) department to design a bespoke unit to test dry riser systems in high rise buildings.