The UK Environment Agency aim to reduce the risk of future flooding with a new 30m wide Tidal Barrier gate which runs along the River Orwell in Ipswich.  The Tidal barrier scheme has been installed via a joint venture between Volker Stevin-Boskalis-Atkins and Hollandia Infra which supplies the barrel for the gate.  To allow access to the void spaces, Winel b.v. installed watertight steel doors, using S355J2 grade steel which withstands a water pressure of 12m head.