Engineering company Hitachi Zosen Corp says it has developed an automatic water protection barrier. The door-like barrier, which is intended for use in businesses, apartment blocks or public institutions, is installed in the ground beneath an aperture or doorway. It is designed to protect against small tsunami or high water levels caused by heavy downpours.
The company said in a statement that its barrier includes an aperture at its base into which water is allowed to flow. If the water level rises, a hollow, stainless-steel barrier automatically rises from the ground to close the passage. The barrier returns to its original position automatically when the water level subsides.
Hitachi Zosen claims the system is design to allowed vehicles to pass through unimpeded when water levels are safe and that the barrier remains operational despite power cuts.
Installation, says Hitachi Zosen, is simple and in most cases can be completed within a day or two. According to a spokesperson, pricing depends on installation needs but in most cases institutions can expect to pay from 1.5 million yen to 3 million yen per square meter. Hitachi Zosen can currently produce barriers up to 2 meters high and 10 meters wide.© Japan Today