CONSTRUCTION
RECORD

Onshore Transmission Lines and Substation at Akita Port

• 
  2021/11/17Restoration construction of main pavement on the underground conduit for electric cables.
  To remove temporary pavement and to lay main pavement.
• 
  2021/08/31Completion of construction for onshore step-up substation.
  The onshore step-up substation has become operative since September 2, 2021.
• 
  2021/08/04Aluminium container installation work at step-up substation.
  To install raised-floor to store cables of control unit for wind power station and substation.
• 
  2021/07/13Equipment installation work at step-up substation.
  To install a power receiving device on the completed foundation.
  
  
• 
  2021/06/17Equipment installation work at step-up substation.
  To install a transformer on the completed foundation.
• 
  2021/05/31Foundation work at step-up substation.
  To pour concrete into the area of reinforcing bars and smooth the surface.
• 
  2021/04/10Connection of electric cables on Shimoshinjo Tozai Line.
  To connect electric cables put through manhole.
  
• 
  2021/04/01Installation for manhole at step-up substation.
  To arrange reinforcement for reinforcing bars.
  
• 
  2021/03/24Start of installation for electric cables on Shimoshinjo Tozai Line.
  To put electric cables through manhole into the underground conduit already buried.
• 
  2021/02/19Installation for underground conduit on Shimoshinjo Tozai Line.
  To install underground conduit for electric cables, bury them with sand and crushed stone under the ground and pave the road with asphalt.
  
  
• 
  2021/01/09Start of continuity test on Nakano Kasaoka Line.
  To check safe entering of electric cables into underground conduit.
• 
  2020/12/22Start of installation for propulsion conduit on non-statutory road.
  To dig vertical shaft for propulsion conduit to let conduit for electric cables pass under waterway.
• 
  2020/11/02Start of installation for manhole on Kubo Akita Line.
  To install manhole where electric cables are connected.
• 
  2020/10/12Installation for underground conduit on Akita Tennoh Line.
  To install underground conduit for electric cables, bury them with sand and crushed stone under the ground and pave the road with asphalt.
• 
  2020/09/29Installation for underground conduit on Shimoshinjo Tozai Line.
  To install underground conduit for electric cables, bury them with sand and crushed stone under the ground and pave the road with asphalt.
• 
  2020/08/17Start of installation for manhole on non-statutory road.
  To install foundation bottom plate in the excavated hole where manhole is placed.
  
• 
  2020/07/16Start of construction on Nakano Kasaoka Line.
  To install steel plate under the ground to protect against landslide and spring water at the time of excavation.
• 
  2020/07/06Start of installation for underground conduit on non-statutory road.
  To install underground conduit for electric cables, bury them with sand and crushed stone under the ground and pave the road with asphalt.
  
• 
  2020/06/29Start of installation for manhole on Shimoshinjo Tozai Line.
  To install manhole where electric cables are connected.
  
• 
  2020/05/08Start of installation for underground conduit on Shimoshinjo Tozai Line.
  To install underground conduit for electric cables, bury them with sand and crushed stone under the ground and pave the road with asphalt.
  
• 
  2020/04/11Start of construction on Shimoshinjo Tozai Line.
  To conduct excavation survey in advance of installing underground conduit for electric cables.