Tolt Ring Gate Rehabilitation

Carnation, Washington

The Tolt River Damn Ring Gate is used to regulate the capture and release of water to balance water supply, flood management, hydropower and fish habitat.

  • This project included reconditioning hydraulic cylinders in the lifting and gripper systems, replacing petroleum oil base hydraulic fluid, and replacing electrical components including wire, conduit, sensors, push-buttons, relays, etc.
  • Elcon provided specifications and mark-up of existing drawing for contractors to bid replacing electrical system components (wire, conduit, sensors, push-buttons, indicator lights, relays, etc.). Elcon also restored the gripper system safety features that had been bypassed.

These renovations will extend the life of the existing control system another 20 to 30 years.