Challenging performance of Kosaka Screw Pumps used for large oil recovery vessels.
In recent years, tankers have frequently caused oil spills in the seas close to Japan, and the need for oil recovery vessels has increased. Fine showings by oil recovery vessels in these oil disasters must be still a fresh memory.
Toward a "breakthrough" of worsening environmental problems.
The pump that was used for large oil recovery vessel, the Seiryu Maru, is Kosaka's UH-4000.
In the oil spill disaster in the Tokyo Bay in July 1997, they had no choice but to recover oil with dippers and absorbing mats until the arrival of the Seiryu Maru, a large oil recovery vessel belonging to the Ministry of Land, Infrastructure and Transport. From this disaster lesson, the local government of the Tokyo Bay focused attention on a zippy cleanup vessel used as a trash picker in the bay to make the most use of it for primary oil recovery. Officials decided to make improvements in 18 vessels owned by the Japanese government and the local government to mount removable oil recovery equipment on them.
Kosaka's "Oil Recovery Pump System" is used for oil recovery vessels and sea cleanup vessels.
The Tokyo Metropolitan Government modified a vessel being constructed as a substitute of cleanup vessel, the No. 1 Seikai Maru, so that the oil recovery pump system could be loaded and the Yokoyama City Government also modified a cleanup vessel so as to load the oil recovery pump system.
Specification for oil recovery pump system
| Type | UH-4000 |
|---|---|
| Volume of oil handled | 1000 m3/h |
| Type | UH-800 |
|---|---|
| Volume of oil handled | 25 m3/h |
| Type | UH-1000 |
|---|---|
| Volume of oil handled | 30 m3/h |